Try .... ....
As the title. Has anyon got any tips for reading the NEC. The board type is as in the picture.
On UPA-S I have FLMD0 on pin 8. Is this PDX as in the picture.
Do I read it with 3 wire or UART (and forget OSC).
Also on mine I have a 8 pin smd chip just under where it says RXD on the pic.
The reason I ask is it wont read, RXD is low. Soldering looks ok.
Is this one the uPD70F3632.
Sorry to be a dick.
V Series TMS470 / EEPROM data - encryption / decryption, totally pwned.
IEC 62056-21 - new discussion: sonsivri.to/forum/index.php?topic=60412.0
Try .... ....
This is the current topic for me in 2022.10.
508 9HD 1.6 HDI_SID807_BR2 ( 19 Faults )
today Subaru Forester 1999 sync. A pair of H44H and F93C46 is required.
A topic that interests me
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I can not find the description .... Lucas EPIC I. II and III
Dunker (7th August, 2018)
Thanks for that. As I assumed with the pinout.
Still no change with it as it was.
I removed the SMD 8pin IC just under the RXD connection and it gets the device ID so the SMD must have been pulling RXD low.
This is what I get now:
Device ID: 10 7F 04 61 7F 7F 7F 97 80 80 80 80 02 7F 7F 01 02 C4 37 B0 46 B3 B3 37 B9 20 20 7F FF 00 00 00
Firmware Version: 03 01 00 02 00 01
Device not Respond
Parameter error
Reading: 2 Errors Found Device: uPD70F3632 Range: 0 - FFFF
This is in UART mode. Cant get anything in 3 wire mode.
I get same result with uPD70F3379 and uPD70F3632
Any ideas?
Last edited by Dunker; 7th August, 2018 at 12:31 PM.
V Series TMS470 / EEPROM data - encryption / decryption, totally pwned.
IEC 62056-21 - new discussion: sonsivri.to/forum/index.php?topic=60412.0
I can see now the device is uPD70F3379. The 'B' prefixs threw me for a second but I can see that the highest bit is for odd parity nearly all way thru the ID. Doh. Has to be summat simple.
Ill go out for a curry and sink a gallon tonight and think about it tomorrow.
V Series TMS470 / EEPROM data - encryption / decryption, totally pwned.
IEC 62056-21 - new discussion: sonsivri.to/forum/index.php?topic=60412.0
Thought it would be a simple mistake. Put my NOVA 2400 on it and frequency from BCM was 5MHz. Built a 4MHz clock generator and fed that in to the BCM and bingo. Read like a charm. Looks like either NEC key is corrupt or crypted pin in 93c86 is corrupt. My guess is the eeprom. Ill compare a few dumps from here over weekend and see whats what.
V Series TMS470 / EEPROM data - encryption / decryption, totally pwned.
IEC 62056-21 - new discussion: sonsivri.to/forum/index.php?topic=60412.0
Now, as you read NEC MCU can do as you want.
This is the current topic for me in 2022.10.
508 9HD 1.6 HDI_SID807_BR2 ( 19 Faults )
today Subaru Forester 1999 sync. A pair of H44H and F93C46 is required.
A topic that interests me
EDC16 CP39 need ASAP2, ols, a2l, kp map
I can not find the description .... Lucas EPIC I. II and III
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