Goto page 1, 2 Next
Pierre-François (f5bqp pf
Guest
Wed Nov 23, 2011 7:57 am
Hi the Group,
On the following module (see the picts into the links below) I'm
searching to identify the following components:
IC1: L02
BV67W
Probably a PIC (?), nevertheless for sure a programmable component.
D4: 6F
42
D3: R12
D2: 6.2B
or
8.2B
93
Difficult to read clearly even under the binocular.
Here are the picts:
Pile:
http://cjoint.com/?AKwxdrhymgr
Face:
http://cjoint.com/?AKwxfvUq7kI
The most important is IC1.
D3 has six pins, very strange for a rectifier, my smd code book doesn't
have an "R12".
Many thanks for your help.
Pierre-Francois, f5bqp
Piotr Piatek
Guest
Wed Nov 23, 2011 11:05 am
On 23.11.2011 07:57, "Pierre-François (f5bqp_pfm)" wrote:
Quote:
On the following module (see the picts into the links below) I'm
searching to identify the following components:
IC1: L02
BV67W
Probably a PIC (?), nevertheless for sure a programmable component.
Serial EEPROM with I2C bus, some variant of 24C02, perhaps BR24L02
Quote:
D4: 6F
npn transistor BC818-25
Morten Leikvoll
Guest
Wed Nov 23, 2011 3:17 pm
""Pierre-François (f5bqp_pfm)"" <pfmonet_at_wanadoo.fr> wrote in message
news:4ecc995b$0$2531$ba4acef3_at_reader.news.orange.fr...
Quote:
Hi the Group,
On the following module (see the picts into the links below) I'm searching
to identify the following components:
IC1: L02
BV67W
Probably a PIC (?), nevertheless for sure a programmable component.
D4: 6F
42
D3: R12
D2: 6.2B
or
8.2B
93
Difficult to read clearly even under the binocular.
Here are the picts:
Pile:
http://cjoint.com/?AKwxdrhymgr
Face:
http://cjoint.com/?AKwxfvUq7kI
The most important is IC1.
D3 has six pins, very strange for a rectifier, my smd code book doesn't
have an "R12".
Here are my guesses.
D2: 6.2 zener or tranzorber (protection) diode.
C2 looks like a high voltage cap. Is this module connected to some
transmission (tele) medium?
It would help with a description what this module does and/or where it came
from.
If IC1 is a serial eeprom, there must be some logic int (or ext) to
read/write it. If int, maybe d3 is some tiny cpu, if ext it may be some dual
port logic. Or maybe a hall sensor? It looks like the i2c bus (from the L02
chip) is also connected to this chip, so my guess is a sensor or maybe even
a unique serial number chip (check dallas, now ti)
The wires seems to be gnd,power,scl and sda.
You could also try
http://www.smdok.com/ or
http://www.marsport.org.uk/smd/mainframe.htm (google for smdcode)
If you also could remove the white label, we could try to reverse engineer
the netlist and get more out of it. I see there is a lot of 51R resistors
there..
Pierre-François (f5bqp pf
Guest
Wed Nov 23, 2011 11:24 pm
Le 23/11/2011 07:57, "Pierre-François (f5bqp_pfm)" a écrit :
Quote:
Hi the Group,
On the following module (see the picts into the links below) I'm
searching to identify the following components:
IC1: L02
BV67W
Probably a PIC (?), nevertheless for sure a programmable component.
D4: 6F
42
D3: R12
D2: 6.2B
or
8.2B
93
Difficult to read clearly even under the binocular.
Here are the picts:
Pile:
http://cjoint.com/?AKwxdrhymgr
Face:
http://cjoint.com/?AKwxfvUq7kI
The most important is IC1.
D3 has six pins, very strange for a rectifier, my smd code book doesn't
have an "R12".
Many thanks for your help.
Pierre-Francois, f5bqp
Hi the Gang,
Many thanks for these first replies, I'll continue to investigate, your
guesses are interesting and bring me on the good direction.
If any other ideas don't hesitate, you're welcome.
All the bests and thanks again.
pf, f5bqp
Pierre-François (f5bqp pf
Guest
Wed Nov 23, 2011 11:42 pm
Le 23/11/2011 15:17, Morten Leikvoll a écrit :
Quote:
""Pierre-François (f5bqp_pfm)""<pfmonet_at_wanadoo.fr> wrote in message
news:4ecc995b$0$2531$ba4acef3_at_reader.news.orange.fr...
Hi the Group,
On the following module (see the picts into the links below) I'm searching
to identify the following components:
IC1: L02
BV67W
Probably a PIC (?), nevertheless for sure a programmable component.
D4: 6F
42
D3: R12
D2: 6.2B
or
8.2B
93
Difficult to read clearly even under the binocular.
Here are the picts:
Pile:
http://cjoint.com/?AKwxdrhymgr
Face:
http://cjoint.com/?AKwxfvUq7kI
The most important is IC1.
D3 has six pins, very strange for a rectifier, my smd code book doesn't
have an "R12".
Here are my guesses.
D2: 6.2 zener or tranzorber (protection) diode.
C2 looks like a high voltage cap. Is this module connected to some
transmission (tele) medium?
It would help with a description what this module does and/or where it came
from.
If IC1 is a serial eeprom, there must be some logic int (or ext) to
read/write it. If int, maybe d3 is some tiny cpu, if ext it may be some dual
port logic. Or maybe a hall sensor? It looks like the i2c bus (from the L02
chip) is also connected to this chip, so my guess is a sensor or maybe even
a unique serial number chip (check dallas, now ti)
The wires seems to be gnd,power,scl and sda.
You could also try
http://www.smdok.com/ or
http://www.marsport.org.uk/smd/mainframe.htm (google for smdcode)
If you also could remove the white label, we could try to reverse engineer
the netlist and get more out of it. I see there is a lot of 51R resistors
there..
Hi Morten & the Gang,
I forgot to answer your question, so here it's:
This small module is a dongle associates to a DVDROM which contain the
update of the cartography for a car GPS.
When you open the motorized screen which flip from 90°, you have on the
side of the GPS screen a 3.5mm jack socket to plug this dongle.
then you insert your DVDROM to update the hard-disk of the GPS unit.
The 3.5mm jack is a 4 pins jack going to the 4 color wires you can see.
The 3.5mm jack isn't on the picture.
Hope you understand better the functionality of this small module.
This is a key, you update once then you cannot update another GPS system...
The problem is that I'm going to add from time to time some remarkable
points to the cartography, then I'll update much more than once!
So I need to find a way to update that dongle.
Tomorrow I'll remove that white label to do another pict for you.
All the bests
pf
Franc Zabkar
Guest
Thu Nov 24, 2011 1:10 am
On Wed, 23 Nov 2011 07:57:27 +0100, "Pierre-François (f5bqp_pfm)"
<pfmonet_at_wanadoo.fr> put finger to keyboard and composed:
Quote:
D4 looks like a dual diode with common cathode, or could it be a dual
zener with common anode ???
If D3 is some kind of diode array, then your multimeter may be able to
tell you where the PN junctions are.
- Franc Zabkar
--
Please remove one 'i' from my address when replying by email.
Pierre-François (f5bqp pf
Guest
Thu Nov 24, 2011 8:53 am
Le 23/11/2011 11:05, Piotr Piatek a écrit :
Quote:
On 23.11.2011 07:57, "Pierre-François (f5bqp_pfm)" wrote:
On the following module (see the picts into the links below) I'm
searching to identify the following components:
IC1: L02
BV67W
Probably a PIC (?), nevertheless for sure a programmable component.
Serial EEPROM with I2C bus, some variant of 24C02, perhaps BR24L02
D4: 6F
npn transistor BC818-25
Hi Piotr,
I've checked the BC818-25 datasheet, they're saying 6Fs for the marking,
so I don't know.
Concerning the 24C02 & the BR24L02 these are serious possible
candidates, however the both datasheet don't mention any marking code so
I don't know either.
But it's very probable it's an I2C EEPROM thinking to the function this
small dongle is doing.
All the bests.
pf, f5bqp
Piotr Piatek
Guest
Thu Nov 24, 2011 11:25 am
On Thu, 24 Nov 2011 08:53:52 +0100, "Pierre-François (f5bqp_pfm)"
wrote:
Quote:
I've checked the BC818-25 datasheet, they're saying 6Fs for the marking,
so I don't know.
The marking 6F looked familiar to me, because we use these transistors
at work, but I think that I was wrong. It's more likely some dual
diode, as Franc Zabkar suggested.
Morten Leikvoll
Guest
Thu Nov 24, 2011 11:40 am
Here is a 6pin serialnumber IC.. Could be something similar.
http://www.maxim-ic.com/datasheet/index.mvp/id/2903/t/al
Based on your description of the board, it may be a fit.
Pierre-François (f5bqp pf
Guest
Thu Nov 24, 2011 2:46 pm
Le 23/11/2011 15:17, Morten Leikvoll a écrit :
Quote:
""Pierre-François (f5bqp_pfm)""<pfmonet_at_wanadoo.fr> wrote in message
news:4ecc995b$0$2531$ba4acef3_at_reader.news.orange.fr...
Hi the Group,
On the following module (see the picts into the links below) I'm searching
to identify the following components:
IC1: L02
BV67W
Probably a PIC (?), nevertheless for sure a programmable component.
D4: 6F
42
D3: R12
D2: 6.2B
or
8.2B
93
Difficult to read clearly even under the binocular.
Here are the picts:
Pile:
http://cjoint.com/?AKwxdrhymgr
Face:
http://cjoint.com/?AKwxfvUq7kI
The most important is IC1.
D3 has six pins, very strange for a rectifier, my smd code book doesn't
have an "R12".
Here are my guesses.
D2: 6.2 zener or tranzorber (protection) diode.
C2 looks like a high voltage cap. Is this module connected to some
transmission (tele) medium?
It would help with a description what this module does and/or where it came
from.
If IC1 is a serial eeprom, there must be some logic int (or ext) to
read/write it. If int, maybe d3 is some tiny cpu, if ext it may be some dual
port logic. Or maybe a hall sensor? It looks like the i2c bus (from the L02
chip) is also connected to this chip, so my guess is a sensor or maybe even
a unique serial number chip (check dallas, now ti)
The wires seems to be gnd,power,scl and sda.
You could also try
http://www.smdok.com/ or
http://www.marsport.org.uk/smd/mainframe.htm (google for smdcode)
If you also could remove the white label, we could try to reverse engineer
the netlist and get more out of it. I see there is a lot of 51R resistors
there..
Hi,
Here is as promised yesterday night the pict with the white sticker
removed, we can see that D2 is in // with C2, so D2 could be a transient
suppressor on to the power lines "just in case"?... Or a Zener at 6.2v
as you mentioned earlier.
http://cjoint.com/?AKyoKzTaOsx
Another pict showing the 3.5 jack:
http://cjoint.com/?AKyoS7CQtgN
pf
Pierre-François (f5bqp pf
Guest
Thu Nov 24, 2011 2:48 pm
Le 24/11/2011 11:25, Piotr Piatek a écrit :
Quote:
On Thu, 24 Nov 2011 08:53:52 +0100, "Pierre-François (f5bqp_pfm)"
wrote:
I've checked the BC818-25 datasheet, they're saying 6Fs for the marking,
so I don't know.
The marking 6F looked familiar to me, because we use these transistors
at work, but I think that I was wrong. It's more likely some dual
diode, as Franc Zabkar suggested.
Hi Piotr,
No problem, the investigation is continuing... :-)
pf
Pierre-François (f5bqp pf
Guest
Thu Nov 24, 2011 2:58 pm
Le 24/11/2011 11:40, Morten Leikvoll a écrit :
Quote:
Hi Morten,
Wouhaa! First time I see such a silicon registering tool!
Today you make me less crazy than this morning! Thanks for that... ;-)
Quote:
Based on your description of the board, it may be a fit.
Yes and no, because each time you get a new DVDROM you get a new dongle,
so the serialnumber IC isn't attached to the GPS.
May be to the DVDROM itself, could be, but the DVD production should be
a mess in that case...
pf
Quote:
Morten Leikvoll
Guest
Thu Nov 24, 2011 3:17 pm
The pinout of the 6pin matches this
http://ww1.microchip.com/downloads/en/DeviceDoc/41239D.pdf
That means its a programmed cpu sharing the i2c line on the connector. I
guess it can be custom labeled (see packaging information)
""Pierre-François (f5bqp_pfm)"" <pfmonet_at_wanadoo.fr> wrote in message
news:4ece4ac1$0$2495$ba4acef3_at_reader.news.orange.fr...
Quote:
Le 23/11/2011 15:17, Morten Leikvoll a écrit :
""Pierre-François (f5bqp_pfm)""<pfmonet_at_wanadoo.fr> wrote in message
news:4ecc995b$0$2531$ba4acef3_at_reader.news.orange.fr...
Hi the Group,
On the following module (see the picts into the links below) I'm
searching
to identify the following components:
IC1: L02
BV67W
Probably a PIC (?), nevertheless for sure a programmable component.
D4: 6F
42
D3: R12
D2: 6.2B
or
8.2B
93
Difficult to read clearly even under the binocular.
Here are the picts:
Pile:
http://cjoint.com/?AKwxdrhymgr
Face:
http://cjoint.com/?AKwxfvUq7kI
The most important is IC1.
D3 has six pins, very strange for a rectifier, my smd code book doesn't
have an "R12".
Here are my guesses.
D2: 6.2 zener or tranzorber (protection) diode.
C2 looks like a high voltage cap. Is this module connected to some
transmission (tele) medium?
It would help with a description what this module does and/or where it
came
from.
If IC1 is a serial eeprom, there must be some logic int (or ext) to
read/write it. If int, maybe d3 is some tiny cpu, if ext it may be some
dual
port logic. Or maybe a hall sensor? It looks like the i2c bus (from the
L02
chip) is also connected to this chip, so my guess is a sensor or maybe
even
a unique serial number chip (check dallas, now ti)
The wires seems to be gnd,power,scl and sda.
You could also try
http://www.smdok.com/ or
http://www.marsport.org.uk/smd/mainframe.htm (google for smdcode)
If you also could remove the white label, we could try to reverse
engineer
the netlist and get more out of it. I see there is a lot of 51R resistors
there..
Hi,
Here is as promised yesterday night the pict with the white sticker
removed, we can see that D2 is in // with C2, so D2 could be a transient
suppressor on to the power lines "just in case"?... Or a Zener at 6.2v as
you mentioned earlier.
http://cjoint.com/?AKyoKzTaOsx
Another pict showing the 3.5 jack:
http://cjoint.com/?AKyoS7CQtgN
pf
Pierre-François (f5bqp pf
Guest
Thu Nov 24, 2011 3:47 pm
Hi Again Morten,
I measured precisely the D3 packaging with a caliper, and it's smaller.
1.3mm large , 2.0mm Long
The PIC10F is SOT23 packaging which is 1.3mm large BUT 2.7mm Long.
On the same side of this tiny board where D3 we're trying to identify is
you have D4 which is an SOT23 packaging, you can see it's bigger.
pf
Le 24/11/2011 15:17, Morten Leikvoll a écrit :
Quote:
The pinout of the 6pin matches this
http://ww1.microchip.com/downloads/en/DeviceDoc/41239D.pdf
That means its a programmed cpu sharing the i2c line on the connector. I
guess it can be custom labeled (see packaging information)
""Pierre-François (f5bqp_pfm)""<pfmonet_at_wanadoo.fr> wrote in message
news:4ece4ac1$0$2495$ba4acef3_at_reader.news.orange.fr...
Le 23/11/2011 15:17, Morten Leikvoll a écrit :
""Pierre-François (f5bqp_pfm)""<pfmonet_at_wanadoo.fr> wrote in message
news:4ecc995b$0$2531$ba4acef3_at_reader.news.orange.fr...
Hi the Group,
On the following module (see the picts into the links below) I'm
searching
to identify the following components:
IC1: L02
BV67W
Probably a PIC (?), nevertheless for sure a programmable component.
D4: 6F
42
D3: R12
D2: 6.2B
or
8.2B
93
Difficult to read clearly even under the binocular.
Here are the picts:
Pile:
http://cjoint.com/?AKwxdrhymgr
Face:
http://cjoint.com/?AKwxfvUq7kI
The most important is IC1.
D3 has six pins, very strange for a rectifier, my smd code book doesn't
have an "R12".
Here are my guesses.
D2: 6.2 zener or tranzorber (protection) diode.
C2 looks like a high voltage cap. Is this module connected to some
transmission (tele) medium?
It would help with a description what this module does and/or where it
came
from.
If IC1 is a serial eeprom, there must be some logic int (or ext) to
read/write it. If int, maybe d3 is some tiny cpu, if ext it may be some
dual
port logic. Or maybe a hall sensor? It looks like the i2c bus (from the
L02
chip) is also connected to this chip, so my guess is a sensor or maybe
even
a unique serial number chip (check dallas, now ti)
The wires seems to be gnd,power,scl and sda.
You could also try
http://www.smdok.com/ or
http://www.marsport.org.uk/smd/mainframe.htm (google for smdcode)
If you also could remove the white label, we could try to reverse
engineer
the netlist and get more out of it. I see there is a lot of 51R resistors
there..
Hi,
Here is as promised yesterday night the pict with the white sticker
removed, we can see that D2 is in // with C2, so D2 could be a transient
suppressor on to the power lines "just in case"?... Or a Zener at 6.2v as
you mentioned earlier.
http://cjoint.com/?AKyoKzTaOsx
Another pict showing the 3.5 jack:
http://cjoint.com/?AKyoS7CQtgN
pf
Franc Zabkar
Guest
Fri Nov 25, 2011 9:24 am
On Thu, 24 Nov 2011 15:47:03 +0100, "Pierre-François (f5bqp_pfm)"
<pfmonet_at_wanadoo.fr> put finger to keyboard and composed:
Quote:
Hi Again Morten,
I measured precisely the D3 packaging with a caliper, and it's smaller.
1.3mm large , 2.0mm Long
The PIC10F is SOT23 packaging which is 1.3mm large BUT 2.7mm Long.
On the same side of this tiny board where D3 we're trying to identify is
you have D4 which is an SOT23 packaging, you can see it's bigger.
pf
ISTM that the whole thing may be as simple as a solitary I2C EEPROM.
I'm guessing D3 is a diode array that protects the clock and data
inputs from ESD.
Vcc ---|<|---o---|<|--- Gnd
|
|
|
SCL / SDA
I think you're correct in that D2 appears to be a transient voltage
suppressor (or maybe a zener). Its breakdown voltage is probably 6.2V
whereas the supply voltage for the EEPROM would be 5V or 3.3V.
- Franc Zabkar
--
Please remove one 'i' from my address when replying by email.
Goto page 1, 2 Next
