= HF8V = / = SP8WJT = / = SP0106RZ =

HF-17591

PROJECT: HF-17591
TYPE: 5578 REV A
DESCRIPTION: unknown module with UPD78C14
BRAND: ?
STATUS: n
PROJECT START DATE:
LOCALISATION: DD
DOCUMENTATION: DVC
PCB: TPD57591 (z), TPD58591, TPD59591 (z)
DIMENSIONS: 153 x 102 mm
HARDWARE VERSION: 1.2

CPU: UPD78C14
BRAND: NEC
FAMILY: 87AD
CPU CATALOG NUMBER: UC-332
CLOCK: 15 MHz (1.25 MIPS)
EXTERNAL ADDRESS SPACE: 48KB
RAM: 256B
THN ADR: 0xFB
TYPE: 0x3D

HF-17591 version 1.01

Project Info

Unknown module with UPD78C14, and TTL/CMOS electronic. Probably industrial electronic. I cutted original TPD57591 for TPD58591 and TPD59591 and latter was scrappad to get rid of electronic which wasnt interesting for me. CPU is configured for internal memory but latch 74373 is present on board so I think it can be modified for external memory system.

I'm interested in assembler writing for this UC and I already compiled some soft for it, but not tested yet. This is what I calling 'retro' CPU project. Even if this CPU is very slow, still quite complicated system can be written in 48 KB memory space.

Update:When I looked at connections it became obvious that modification of this circuit would be very difficult or impossible, because extender ports are connected to various devices on board. So, more probably this module will be disassembled and CPU transferred to reserve.

There is another module with UPD78C14 HF-17202 and I also had 3rd CPU as reserve (catalogued as UC-212) but I cannot find it, so possible that I scrapped it. Practically the same instruction set is used in other NEC 87AD family modules:

UPD7811 HF-12211

UPD78C10 HF-17233

UPD7810 HF-17244#1

UPD7810 HF-17244#2

Components

U1 M74HC373 LATCH

U2 UPD78C14 CPU

U3 MC1488 QUAD MDTL LINE DRIVER EIA-232D

U4 MC1408 8-bit Multiplying D/A

U5 93C46 SPI EEPROM (MM-591)

U6 MC1489 Quad Line Receivers

U7 LM324 Quad ground sense operational amplifier

U8 M74HC30 8 input NAND gate

U9 LM339 Quad Comparators

U10 LM324 Quad ground sense operational amplifier

U11 M74HC4066 Quad bilateral switches

U12 M74HC4040 12-Stage Ripple-Carry Binary Counter/Divider

U13 desoldered

U14 LP2951 LDO

UPD78C14 pins

Hardware version control

1.00 - original version
1.01 - TPD57591 cutted, renamed TPD58591 and TPD59591 (disassembled)
1.02 - broken J1 replaced for goldpin

Sources:
[1] Datasheet UPD78C14

STATUS CODES

f	failed
g	device not complete
n	not tested
p	planned
q	not accomplished
r	resigned
u	fully operational
w	assembled but not tested
x	not avalaible (returned, sold, lost or no data)
z	decomissioned (disassembled)

Prefix 17

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