= HF8V = / = SP8WJT = / = SP0106RZ =

HF-17202


Project Data

PROJECT: HF-17202
TYPE: A0965130G
DESCRIPTION: XERO control board
BRAND: RICOH
STATUS: n
PROJECT START DATE:
LOCALISATION: PG
DOCUMENTATION: TM, DVC
PCB: TPD57202
DIMENSIONS: 155 x 150 mm
HARDWARE VERSION: 1.00


CPU Data

CPU: UPD78C14
BRAND: NEC
FAMILY: 87AD
ROM: 16KB
RAM: 256B
EXTERNAL ADDRESS SPACE: 48KB
CLOCK: 15 MHz (1.25 MIPS)
CATALOG NUMBER: UC-213
THN ADR: 0xFC
TYPE: 0x3D



Project Info

It was control board for RICOH xero. CPU is configured for internal memory, but there is interface to connect external memory, minor modifications must be made.

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.

There is another module with UPD78C14 HF-17591 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.




UPD78C14 pins





Components

  • 3773 - RESET IC [4]
  • J-K12224Y - switch
  • M66240 - 4-CH 16-BIT PWM GENERATOR [3]
  • JRC2902 - Low power quad op amps [5]
  • JRC2904 - Industry-Standard Dual Operational Amplifiers [6]
  • STA431A - Bipolar (BJT) Transistor Array 4 NPN (Quad) 35V 3A 4W Through Hole 10-SIP [2]
  • UPD78C14G - uC ROM [1]




    • Another 87AD projects

    PROJECT UC-### MICROPROCESSOR NAME REMARKS THN ADR TYPE
    HF-12211 UC-204 UPD7811 8b, ROM4K, RAM256, 12MHz, ADR SPC 60K, EXT 0x67 0x3C
    HF-17202 UC-213 UPD78C14 8b, ROM16K, RAM256B, 15 MHz (1.25 MIPS), ADR_SPC48KB, EXT 0xFC 0x3D
    HF-17233 UC-211 UPD78C10 TK-013, EXT 0xEF 0x3B
    HF-17244#1 UC-202 UPD7810 EXT 0xED 0x3B
    HF-17244#2 UC-203 UPD7810 EXT 0xEE 0x3B
    HF-17591 UC-332 UPD78C14 8b, ROM16K, RAM256B, 15 MHz (1.25 MIPS), ADR_SPC48KB, EXT 0xFB 0x3D



    Sources

    [1] Datasheet UPD78C14
    [2] Datasheet STA413
    [3] Datasheet M66240
    [4] Datasheet MB3773
    [5] Datasheet 2902
    [6] Datasheet 2904
    [7] Notebook 'Mikroprocesory-2' p. 111-113, basic informations on architecture and assembler, basic code routines


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