APExx12 Series

Rev 1.3

2003/8/18

1

1.0 General Description

The

APExx12 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)

APE0612

6

14-bits

20k

APE1012

10

15-bits

32k

APE1512

15

16-bits

48k

APE2012

20

16-bits

64k

APE3112

31

17-bits

96k

APE4112

41

17-bits

128k

APE5212

52

18-bits

160k

APE6312

63

18-bits

192k

APE7312

73

18-bits

224k

APE8412

84

18-bits

256k

(4) Data Registers:

a). 128 x 4-bit data RAM (00-7Fh)

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)

c). PRD: 4-bits I/O Port D (15h) can be programmed to input/output individually. (Register control)

(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.