Does anybody know what this IC is?
1
$begingroup$
I tried different search keywords combinations, but I couldn’t find a datasheet, nor a hint of what this IC could be. Maybe someone who’s familiar with it could give me a clue. 
The IC is on a board that was part of the control panel of a home theater. The options were volume up and down, surround 2.1 or 5.1 and mute. The brand was National Star, as far as I can recall. Thanks in advance.
identification small-electronics
asked 4 hours ago
Damián GonzálezDamián González
83
New contributor
Damián González is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
$endgroup$
|
show 1 more comment
1
$begingroup$
I tried different search keywords combinations, but I couldn’t find a datasheet, nor a hint of what this IC could be. Maybe someone who’s familiar with it could give me a clue.
The IC is on a board that was part of the control panel of a home theater. The options were volume up and down, surround 2.1 or 5.1 and mute. The brand was National Star, as far as I can recall. Thanks in advance.
identification small-electronics
asked 4 hours ago
Damián GonzálezDamián González
83
New contributor
Damián González is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
$endgroup$
$begingroup$
What type of device uses it? Can you guess at the likely function it plays?
$endgroup$
– David
4 hours ago
$begingroup$
It was part of a home theater logic board. On the board there are five buttons and five LEDs.
$endgroup$
– Damián González
4 hours ago
$begingroup$
I think that's kind-of essential information that should be in the question rather than in the comments. What aspect of the home theater does it control? Digital or analog? I'm guessing digital.
$endgroup$
– Transistor
4 hours ago
$begingroup$
Can you add a photo of the other side of the board -- this might be a microcontroller in 18-DIP package. If you could determine which pins are ground, logic power supply, and i/o that would help. There's no visible manufacturer logo, only the top mark "APT619AP" and date/lot code "0609A BJC6124". Some IC manufacturers have a database of topmark to part number, but there's still a lot of guesswork.
$endgroup$
– MarkU
3 hours ago
1
$begingroup$
@Damián - Hi, From the photos, I'll just make two short comments. You haven't asked this as a repair question (it's difficult to make them on-topic here, so that's good!) but assuming you believe there's a fault on that board: (a) There's very questionable soldering in several places including, but not only, whereC1andIR1used to be (and possible solder bridges in both of those places). (b) The fault on the board might be elsewhere e.g. power problems, which could cause the (suspected MCU, per Spehro's answer) IC to misbehave. I would not start by trying to replace the IC. Good luck!
$endgroup$
– SamGibson
3 hours ago
|
show 1 more comment
1
1
1
$begingroup$
I tried different search keywords combinations, but I couldn’t find a datasheet, nor a hint of what this IC could be. Maybe someone who’s familiar with it could give me a clue.
The IC is on a board that was part of the control panel of a home theater. The options were volume up and down, surround 2.1 or 5.1 and mute. The brand was National Star, as far as I can recall. Thanks in advance.
identification small-electronics
asked 4 hours ago
Damián GonzálezDamián González
83
New contributor
Damián González is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
$endgroup$
I tried different search keywords combinations, but I couldn’t find a datasheet, nor a hint of what this IC could be. Maybe someone who’s familiar with it could give me a clue.
The IC is on a board that was part of the control panel of a home theater. The options were volume up and down, surround 2.1 or 5.1 and mute. The brand was National Star, as far as I can recall. Thanks in advance.
identification small-electronics
identification small-electronics
asked 4 hours ago
Damián GonzálezDamián González
83
New contributor
Damián González is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked 4 hours ago
Damián GonzálezDamián González
83
New contributor
Damián González is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
edited 3 hours ago
Damián González
asked 4 hours ago
Damián GonzálezDamián González
83
New contributor
Damián González is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked 4 hours ago
Damián GonzálezDamián González
83
asked 4 hours ago
Damián GonzálezDamián González
83
83
New contributor
Damián González is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
New contributor
Damián González is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
Damián González is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
$begingroup$
What type of device uses it? Can you guess at the likely function it plays?
$endgroup$
– David
4 hours ago
$begingroup$
It was part of a home theater logic board. On the board there are five buttons and five LEDs.
$endgroup$
– Damián González
4 hours ago
$begingroup$
I think that's kind-of essential information that should be in the question rather than in the comments. What aspect of the home theater does it control? Digital or analog? I'm guessing digital.
$endgroup$
– Transistor
4 hours ago
$begingroup$
Can you add a photo of the other side of the board -- this might be a microcontroller in 18-DIP package. If you could determine which pins are ground, logic power supply, and i/o that would help. There's no visible manufacturer logo, only the top mark "APT619AP" and date/lot code "0609A BJC6124". Some IC manufacturers have a database of topmark to part number, but there's still a lot of guesswork.
$endgroup$
– MarkU
3 hours ago
1
$begingroup$
@Damián - Hi, From the photos, I'll just make two short comments. You haven't asked this as a repair question (it's difficult to make them on-topic here, so that's good!) but assuming you believe there's a fault on that board: (a) There's very questionable soldering in several places including, but not only, whereC1andIR1used to be (and possible solder bridges in both of those places). (b) The fault on the board might be elsewhere e.g. power problems, which could cause the (suspected MCU, per Spehro's answer) IC to misbehave. I would not start by trying to replace the IC. Good luck!
$endgroup$
– SamGibson
3 hours ago
|
show 1 more comment
$begingroup$
What type of device uses it? Can you guess at the likely function it plays?
$endgroup$
– David
4 hours ago
$begingroup$
It was part of a home theater logic board. On the board there are five buttons and five LEDs.
$endgroup$
– Damián González
4 hours ago
$begingroup$
I think that's kind-of essential information that should be in the question rather than in the comments. What aspect of the home theater does it control? Digital or analog? I'm guessing digital.
$endgroup$
– Transistor
4 hours ago
$begingroup$
Can you add a photo of the other side of the board -- this might be a microcontroller in 18-DIP package. If you could determine which pins are ground, logic power supply, and i/o that would help. There's no visible manufacturer logo, only the top mark "APT619AP" and date/lot code "0609A BJC6124". Some IC manufacturers have a database of topmark to part number, but there's still a lot of guesswork.
$endgroup$
– MarkU
3 hours ago
1
$begingroup$
@Damián - Hi, From the photos, I'll just make two short comments. You haven't asked this as a repair question (it's difficult to make them on-topic here, so that's good!) but assuming you believe there's a fault on that board: (a) There's very questionable soldering in several places including, but not only, whereC1andIR1used to be (and possible solder bridges in both of those places). (b) The fault on the board might be elsewhere e.g. power problems, which could cause the (suspected MCU, per Spehro's answer) IC to misbehave. I would not start by trying to replace the IC. Good luck!
$endgroup$
– SamGibson
3 hours ago
$begingroup$
What type of device uses it? Can you guess at the likely function it plays?
$endgroup$
– David
4 hours ago
$begingroup$
What type of device uses it? Can you guess at the likely function it plays?
$endgroup$
– David
4 hours ago
$begingroup$
It was part of a home theater logic board. On the board there are five buttons and five LEDs.
$endgroup$
– Damián González
4 hours ago
$begingroup$
It was part of a home theater logic board. On the board there are five buttons and five LEDs.
$endgroup$
– Damián González
4 hours ago
$begingroup$
I think that's kind-of essential information that should be in the question rather than in the comments. What aspect of the home theater does it control? Digital or analog? I'm guessing digital.
$endgroup$
– Transistor
4 hours ago
$begingroup$
I think that's kind-of essential information that should be in the question rather than in the comments. What aspect of the home theater does it control? Digital or analog? I'm guessing digital.
$endgroup$
– Transistor
4 hours ago
$begingroup$
Can you add a photo of the other side of the board -- this might be a microcontroller in 18-DIP package. If you could determine which pins are ground, logic power supply, and i/o that would help. There's no visible manufacturer logo, only the top mark "APT619AP" and date/lot code "0609A BJC6124". Some IC manufacturers have a database of topmark to part number, but there's still a lot of guesswork.
$endgroup$
– MarkU
3 hours ago
$begingroup$
Can you add a photo of the other side of the board -- this might be a microcontroller in 18-DIP package. If you could determine which pins are ground, logic power supply, and i/o that would help. There's no visible manufacturer logo, only the top mark "APT619AP" and date/lot code "0609A BJC6124". Some IC manufacturers have a database of topmark to part number, but there's still a lot of guesswork.
$endgroup$
– MarkU
3 hours ago
1
1
$begingroup$
@Damián - Hi, From the photos, I'll just make two short comments. You haven't asked this as a repair question (it's difficult to make them on-topic here, so that's good!) but assuming you believe there's a fault on that board: (a) There's very questionable soldering in several places including, but not only, where
C1 and IR1 used to be (and possible solder bridges in both of those places). (b) The fault on the board might be elsewhere e.g. power problems, which could cause the (suspected MCU, per Spehro's answer) IC to misbehave. I would not start by trying to replace the IC. Good luck!$endgroup$
– SamGibson
3 hours ago
$begingroup$
@Damián - Hi, From the photos, I'll just make two short comments. You haven't asked this as a repair question (it's difficult to make them on-topic here, so that's good!) but assuming you believe there's a fault on that board: (a) There's very questionable soldering in several places including, but not only, where
C1 and IR1 used to be (and possible solder bridges in both of those places). (b) The fault on the board might be elsewhere e.g. power problems, which could cause the (suspected MCU, per Spehro's answer) IC to misbehave. I would not start by trying to replace the IC. Good luck!$endgroup$
– SamGibson
3 hours ago
|
show 1 more comment
1 Answer
1
active
oldest
votes
5
$begingroup$
Judging by the ceramic resonator and load capacitors connected to pins 15 and 16, it's almost surely a microcontroller with a custom program in OTP or flash memory. And typically the program memory is read-protected for the security of the manufacturer's firmware.
So more than likely it's not the sort of thing you'll be able to buy from other sources than the original, such as a used board or repair part.
answered 3 hours ago
Spehro PefhanySpehro Pefhany
208k5158419
$endgroup$
$begingroup$
Thank you vey much for your clear answer.
$endgroup$
– Damián González
3 hours ago
2
$begingroup$
Please note SamGibson's comment- the chip is not the most likely failure point. The other parts are all easily inspected and are very common parts most likely.
$endgroup$
– Spehro Pefhany
2 hours ago
add a comment |
Your Answer
StackExchange.ifUsing("editor", function () {
return StackExchange.using("mathjaxEditing", function () {
StackExchange.MarkdownEditor.creationCallbacks.add(function (editor, postfix) {
StackExchange.mathjaxEditing.prepareWmdForMathJax(editor, postfix, [["\$", "\$"]]);
});
});
}, "mathjax-editing");
StackExchange.ifUsing("editor", function () {
return StackExchange.using("schematics", function () {
StackExchange.schematics.init();
});
}, "cicuitlab");
StackExchange.ready(function() {
var channelOptions = {
tags: "".split(" "),
id: "135"
};
initTagRenderer("".split(" "), "".split(" "), channelOptions);
StackExchange.using("externalEditor", function() {
// Have to fire editor after snippets, if snippets enabled
if (StackExchange.settings.snippets.snippetsEnabled) {
StackExchange.using("snippets", function() {
createEditor();
});
}
else {
createEditor();
}
});
function createEditor() {
StackExchange.prepareEditor({
heartbeatType: 'answer',
autoActivateHeartbeat: false,
convertImagesToLinks: false,
noModals: true,
showLowRepImageUploadWarning: true,
reputationToPostImages: null,
bindNavPrevention: true,
postfix: "",
imageUploader: {
brandingHtml: "Powered by u003ca class="icon-imgur-white" href="https://imgur.com/"u003eu003c/au003e",
contentPolicyHtml: "User contributions licensed under u003ca href="https://creativecommons.org/licenses/by-sa/3.0/"u003ecc by-sa 3.0 with attribution requiredu003c/au003e u003ca href="https://stackoverflow.com/legal/content-policy"u003e(content policy)u003c/au003e",
allowUrls: true
},
onDemand: true,
discardSelector: ".discard-answer"
,immediatelyShowMarkdownHelp:true
});
}
});
Damián González is a new contributor. Be nice, and check out our Code of Conduct.
draft saved
draft discarded
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
StackExchange.ready(
function () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2felectronics.stackexchange.com%2fquestions%2f422723%2fdoes-anybody-know-what-this-ic-is%23new-answer', 'question_page');
}
);
Post as a guest
Required, but never shown
1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
5
$begingroup$
Judging by the ceramic resonator and load capacitors connected to pins 15 and 16, it's almost surely a microcontroller with a custom program in OTP or flash memory. And typically the program memory is read-protected for the security of the manufacturer's firmware.
So more than likely it's not the sort of thing you'll be able to buy from other sources than the original, such as a used board or repair part.
answered 3 hours ago
Spehro PefhanySpehro Pefhany
208k5158419
$endgroup$
$begingroup$
Thank you vey much for your clear answer.
$endgroup$
– Damián González
3 hours ago
2
$begingroup$
Please note SamGibson's comment- the chip is not the most likely failure point. The other parts are all easily inspected and are very common parts most likely.
$endgroup$
– Spehro Pefhany
2 hours ago
add a comment |
5
$begingroup$
Judging by the ceramic resonator and load capacitors connected to pins 15 and 16, it's almost surely a microcontroller with a custom program in OTP or flash memory. And typically the program memory is read-protected for the security of the manufacturer's firmware.
So more than likely it's not the sort of thing you'll be able to buy from other sources than the original, such as a used board or repair part.
answered 3 hours ago
Spehro PefhanySpehro Pefhany
208k5158419
$endgroup$
$begingroup$
Thank you vey much for your clear answer.
$endgroup$
– Damián González
3 hours ago
2
$begingroup$
Please note SamGibson's comment- the chip is not the most likely failure point. The other parts are all easily inspected and are very common parts most likely.
$endgroup$
– Spehro Pefhany
2 hours ago
add a comment |
5
5
5
$begingroup$
Judging by the ceramic resonator and load capacitors connected to pins 15 and 16, it's almost surely a microcontroller with a custom program in OTP or flash memory. And typically the program memory is read-protected for the security of the manufacturer's firmware.
So more than likely it's not the sort of thing you'll be able to buy from other sources than the original, such as a used board or repair part.
answered 3 hours ago
Spehro PefhanySpehro Pefhany
208k5158419
$endgroup$
Judging by the ceramic resonator and load capacitors connected to pins 15 and 16, it's almost surely a microcontroller with a custom program in OTP or flash memory. And typically the program memory is read-protected for the security of the manufacturer's firmware.
So more than likely it's not the sort of thing you'll be able to buy from other sources than the original, such as a used board or repair part.
answered 3 hours ago
Spehro PefhanySpehro Pefhany
208k5158419
edited 3 hours ago
answered 3 hours ago
Spehro PefhanySpehro Pefhany
208k5158419
answered 3 hours ago
Spehro PefhanySpehro Pefhany
208k5158419
answered 3 hours ago
Spehro PefhanySpehro Pefhany
208k5158419
208k5158419
$begingroup$
Thank you vey much for your clear answer.
$endgroup$
– Damián González
3 hours ago
2
$begingroup$
Please note SamGibson's comment- the chip is not the most likely failure point. The other parts are all easily inspected and are very common parts most likely.
$endgroup$
– Spehro Pefhany
2 hours ago
add a comment |
$begingroup$
Thank you vey much for your clear answer.
$endgroup$
– Damián González
3 hours ago
2
$begingroup$
Please note SamGibson's comment- the chip is not the most likely failure point. The other parts are all easily inspected and are very common parts most likely.
$endgroup$
– Spehro Pefhany
2 hours ago
$begingroup$
Thank you vey much for your clear answer.
$endgroup$
– Damián González
3 hours ago
$begingroup$
Thank you vey much for your clear answer.
$endgroup$
– Damián González
3 hours ago
2
2
$begingroup$
Please note SamGibson's comment- the chip is not the most likely failure point. The other parts are all easily inspected and are very common parts most likely.
$endgroup$
– Spehro Pefhany
2 hours ago
$begingroup$
Please note SamGibson's comment- the chip is not the most likely failure point. The other parts are all easily inspected and are very common parts most likely.
$endgroup$
– Spehro Pefhany
2 hours ago
add a comment |
Damián González is a new contributor. Be nice, and check out our Code of Conduct.
draft saved
draft discarded
Damián González is a new contributor. Be nice, and check out our Code of Conduct.
Damián González is a new contributor. Be nice, and check out our Code of Conduct.
Damián González is a new contributor. Be nice, and check out our Code of Conduct.
Thanks for contributing an answer to Electrical Engineering Stack Exchange!
- Please be sure to answer the question. Provide details and share your research!
But avoid …
- Asking for help, clarification, or responding to other answers.
- Making statements based on opinion; back them up with references or personal experience.
Use MathJax to format equations. MathJax reference.
To learn more, see our tips on writing great answers.
draft saved
draft discarded
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
StackExchange.ready(
function () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2felectronics.stackexchange.com%2fquestions%2f422723%2fdoes-anybody-know-what-this-ic-is%23new-answer', 'question_page');
}
);
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
$begingroup$
What type of device uses it? Can you guess at the likely function it plays?
$endgroup$
– David
4 hours ago
$begingroup$
It was part of a home theater logic board. On the board there are five buttons and five LEDs.
$endgroup$
– Damián González
4 hours ago
$begingroup$
I think that's kind-of essential information that should be in the question rather than in the comments. What aspect of the home theater does it control? Digital or analog? I'm guessing digital.
$endgroup$
– Transistor
4 hours ago
$begingroup$
Can you add a photo of the other side of the board -- this might be a microcontroller in 18-DIP package. If you could determine which pins are ground, logic power supply, and i/o that would help. There's no visible manufacturer logo, only the top mark "APT619AP" and date/lot code "0609A BJC6124". Some IC manufacturers have a database of topmark to part number, but there's still a lot of guesswork.
$endgroup$
– MarkU
3 hours ago
1
$begingroup$
@Damián - Hi, From the photos, I'll just make two short comments. You haven't asked this as a repair question (it's difficult to make them on-topic here, so that's good!) but assuming you believe there's a fault on that board: (a) There's very questionable soldering in several places including, but not only, where
C1andIR1used to be (and possible solder bridges in both of those places). (b) The fault on the board might be elsewhere e.g. power problems, which could cause the (suspected MCU, per Spehro's answer) IC to misbehave. I would not start by trying to replace the IC. Good luck!$endgroup$
– SamGibson
3 hours ago