On this page:
- 6530 datasheets
- 6532 datasheets
- GS65C32 datasheets
- Other 65XX RIOT datasheets
Datasheets 6530
The 6530 was produced by most licensed 6502 manufacturers, from MOS Technology/Commodore SG to Rockwell and Synertek. All production datasheets that I have seen are identical
The oldest one is a preliminary MOS datasheet for the MCS6530, missing the ordering pages of the production version.
The most complete datasheet of the 6530 are the Synertek and Rockwell versiona, first in next table.
6532
CMOS 6532
The 6532 exists in CMOS variants, I have only seen the California Micro Devices GTE 65SC32 variant.
![]() |
Synertek 65C32 preliminary |
![]() |
GTE G65SC32 |
![]() |
CMD G65SC32 |
![]() |
GTE G65SC32 |
Other RIOTs
In Rockwell databooks there are more RIOTs described. 6531, 6534. Never seen in the wild, a mention here and there of being used in pinball machines.
The timer/counter is a lot more capable, 16 bits etc.
![]() |
R6531 ROM-RAM-I/O-Counter (RRIOC) |
![]() |
R6531 ROM-RAM-I/O-Counter (RRIOC) |
![]() |
R6531 ROM-RAM-I/O-Counter (RRIOC) |
![]() |
Rockwell R6534 ROM-IO-Counter (RIOC) |
See also:
PicoSYM, a SYM-1 emulator on a Raspberry Pico
Emulation of a Synertek Sym-1 on a Raspberry Pi Pico 1 (W).
By andysa on the emulation forum on 6502.org
Here is t...
Amazing it works!
After publishing the photos of the transistors used in the KIM-1 a discussion started on forum64.de in the 'Instandsetzu...
Transistors in the KIM-1
Even a microprocessor based computer as the KIM-1 required some simple transistors.
To drive the LEDs some extra curren...























