UPD70F3366

[thieringpeti]

Hi EEVBlog Members!

First, I wish everyone a happy New Year 2019!

Last year, I've bought some used rack cabinets with drawers for my home lab at a local fab dumpster auction. (the fab produces OEM car radios and navigation units for some german brands.)  Naturally, the cabinets weren't empty, expensive, high-end branded instruments were removed and sold separately, but the custom-made electronics, power supplies, and the cabling were still inside. I've cleaned the cabinets up, just for fun, and using them as storage place for my stuff. These cabinets were used for testing car radio functionality, including audio quality, radio performance, GSM, Wifi, Bluetooth and other interfaces. The power supplies were all high quality models, like TDK-Lambda or Mean-Well, so these parts and the cabinets were worth the price alone.

I've got a few boards, which can be used just for fun, for some projects. One of these boards labelled "uMOST interface" has an interesting hardware inside.
MCU: NEC UPD70F3366
some external SRAM (ISSI 62WV2568BLI))
some external EEPROM (tiny 8-pin package, AT46A code, i think I2C or SPI eeprom)
on-board dual SMPS power supply from 12V DC input (2x L5970D)

I/O interfaces:
a dual-port FT2232 USB-UART (programmed with custom USB ID's, I've reset it with FT-PROG)
1xTJA1041 CAN transceiver
1xTJA1055 fault-tolerant CAN transceiver
1xTJA1020 20kbaud LIN transceiver
2x OASIS OS8104 MOST network transceiver, connected to an optical transmitter/receiver connector
Optical SPDIF input, output connected to MCU
Analog audio jack input, output connected to MCU
a relay (i think for GPIP / switching)
some discrete LVCMOS logic/multiplexers
JTAG, I2C, UART, SPI pin headers

Is this board is useful for any hobby project, e.g. audio signal conversion, some A/D or D/A functionality? I've never seen this MOST interface, I've read that this is used as a LAN in modern luxury cars.

Which complier, programmer do you recommend for these?

Other interesting board is a small PCB with an FTDI, and an XA3S500E FPGA with an external GL512N1FF dataflash, some TTL buffered GPIO's and a 4-digit 7-segment LED display. When powered up, it shows some hex numbers. I think the FPGA had a "soft-MCU" programmed "inside", as I've learnt at the university how these FPGA's can be used... Those boards were extracted from a used "pogo-pin" test fixture, which I will use for a replacement of Merifix fixtures, if a more roboust mechanical enviroment is needed.

I'm using AVR-GCC for years, and I'm familiar with STM32's using Keil or EmBitz IDE, but I've never tried these parts. I don't want to throw them away, and I want to play with them for learning.

Cheers, Peter

[LetsMakeThisWork]

For the NEC UPD70F3366  Look at Renesas (They bought out NEC)

I believe the Cube Studio and a E1 interface are whats needed. (Double check that)

Renesas seems to have a fairly good website to help find tools and interfaces.

[thieringpeti]

Thanks! It would be a next-time weekend project to do something with those boards... They are in a sweet extruded aluminium case

There are some Minicube2 programmers showing up on Ebay for a reasonable price. E1 is a bit overpriced I think.
Should I try buying a Minicube2 programmer?

[Rasz]

Should I try buying a Minicube2 programmer?

are you planning a career as an automotive embedded programmer? or moving to china? because afaik nobody sane uses nec/renesas, its all legacy or very low pay low level stuff.
Imo you should try selling this junk on ebay. fpga one looks a lot more promising.

[thieringpeti]

I've never tried FPGA's, but that's one extra reason to move on...
So these NEC controllers are weak compared to STM32's? And I found less support for these, like Arduino for atmega, and lots-lots of open source stuff for ARM's...