SPC21A1 Description
The SPC21A1 is a CPU based two-channel speech/melody synthesizer including CMOS 8-bit microprocessor with 69 instructions, 20K-byte ROM for speech and melody data (Speech is pressed by a 4-bit ADPCM with approx. 6 sec speech duration @ 7KHz sampling rate) and 64-byte working SRAM. It includes two Timer/Counters, 10 Software Selectable I/Os, and one 8-bit current D/A output.
SPC21A1 Key Features
- 3.4V @ 4.0MHz 3.6V
- 5.5V @ 6.0MHz
- I/O PORT
- PORT IOC IOD $0004 $0005 $000C0 USER RAM and STACK $00100 UNUSED $00200 SUNPLUS TEST PROGRAM $00600 USER’S PROGRAM & DAT
- CPU CLK / 65536
- EXT INT $07000 USER‘S PROGRAM & DATA AREA $07FFF -ME