Rainbow Electronics APExx08 - Manual (Page 2)

APExx08 Series
Rev 1.5 2004/4/20 1
1.0 General Description
The APExx08 series are very low cost voice and melody synthesizer with 4-bits CPU. They have various
features including 4-bits ALU, ROM, RAM, I/O ports, timers, clock generator, voice and melody
synthesizer, and PWM (Direct drive) or D/A current outputs, etc. The audio synthesizer contains one
voice-channel and two melody-channels. Furthermore, they consist of 27 instructions in these devices.
With CMOS technology and halt function can minimize power dissipation. Their architectures are similar
to RISC, with two stages of instruction pipeline. They allow all instructions to be executed in a single
cycle, except for program branches and data table read instructions (which need two instruction cycles).
2.0 Features
(1) Single power supply can operate from 2.4V to 5.5V at 4MHz or 8MHz.
(2) Program ROM: 16k x 10 bits
(3) 1 set of 16-bits DPR can access up to 64k x 10 bits melody data memory space, and 1 set of 18-bits
VPR can access up to 256k x 10 bits voice data memory space.
Product Voice Duration (sec) Voice Pointer (VPR) ROM Size (10-bit)
APE0508 5 14-bits 16k
APE1008 10 15-bits 32k
APE1508 15 16-bits 48k
APE2008 20 16-bits 64k
APE3108 31 17-bits 96k
APE4108 41 17-bits 128k
APE5208 52 18-bits 160k
APE6308 63 18-bits 192k
(4) Data Registers:
a). 128 x 4-bits data RAM (00-7Fh)
(APE0508 /1008 is 96 x 4-bits data RAM 00-5Fh)
b). Unbanked special function registers (SFR) range: 00h-2Fh
(5) I/O Ports:
a). PRA: 4-bits I/O Port A (10h) can be programmed to input/output individually. (Register control)
b). PRB: 4-bits I/O Port B (13h) can be configured to input/output individually. (Mask option)
(6) On-chip clock generator: Resistive Clock Drive (RM)
(7) Timer: 1-set Voice Interrupt (Timer0: a 9-bits auto-reload timer/counter).
(8) Stack: 2-level subroutine nesting.
(9) Built-in 4 Level Volume Control can be programmed.
(10) Built-in 8 Level DAC current output can be configured. (Mask option)
(11) Built-in IR Carry Output: Port B[1] can be configured as IR pin by 38k / 56kHz. (Mask option)