APExx12 Series

Rev 1.3 2003/8/18

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.

APExx12 Series

Rev 1.3 2003/8/18

(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)

(12) External Reset: Port B[3] can be configured as reset pin. (Mask opton)

(13) HALT and Release from HALT function to reduce power consumption

(14) Watch Dog Timer (WDT)

(15) Instruction: 1-cycle instruction except for table read and program branches which are 2-cycles

(16) Number of instruction: 27

(17) DAC: 1 channel voice and dual tone melody synthesizer (One 9-bits Cout or 8-bits PWM output).

FIGURE 1 : ROM Map of

APExx12

Series

14-bit x 2 STACK

Reset Vector

00000h-03FFFh

16-bit Data Pointer

PC[13:0]

Reserved for Testing

000FFh-00400h

00401h

00000h

000FEh

Program ROM

00000h-0FFFFh

Data ROM for Melody

18-bit Voice Pointer

00000h-5FFFFh

Voice ROM for Voice

APExx12 Series

Rev 1.3 2003/8/18

3.0 Pin Description

Pad Name

Pin Attr.

Description

PWM2/Cout

PWM2 output, or Current Output of Audio.

PWM1

O PWM1

output.

Vdd1~2

Power

Power supply during operation.

PRA0~3
PRD0~3

I/O

I/O port can be programmed to input/output individually.
Input type with weak pull-low or fix-input-floating capability.
Buffer Output type.

PRB0, PRB2

I/O

I/O port can be configured to input/output individually.
Input type with weak pull-low or fix-input-floating capability.
Buffer Output type.

PRB1 / IR

I/O

I/O port can be configured to input/output individually.
Input type with weak pull-low or fix-input-floating capability.
Buffer Output type.
Mask option selected as an IR Carrier Output with 38k / 56kHz

PRB3 / Reset

I/O

I/O port can be configured to input/output individually.
Input type with weak pull-low or fix-input-floating capability.
Buffer Output type.
Mask option selected as an external RESET pin with weak pull-low
capability.

OSC

RM mode Oscillator input

GND1~3

Power

Ground Potential

4.0 DC Characteristics

Symbol

Parameter

Vdd

Min.

Typ.

Max. Unit

Condition

Vdd

Operating voltage

2.4

5.5

depending on Freq.

3 1

Isb Standby

4.5 1

4MHz, RM,

in HALT Mode

3 2

Iop

Supply
current

Operating

4.5 7

4MHz, RM,

IO Floating

3 3

Iih

Input current

(Internal pull low)

4.5 10

Input ports with weak

pull-low

3 -3

Ioh Output-high

current

4.5 -10

3 7

Iol Output-low

current

4.5 19

4MHz, RM

(IO ports)

0.8 ~ 4.8

Cout

DAC output current

(8-level option)

4.5

0.9 ~ 6.5

4MHz, RM

(Full scale)

dF/F Frequency

stability -5 5 %

Fosc(3v- 2.4v)

Fosc (3v)

dF/F Fosc

lot

variation -10 10

Vdd=3V, Rosc=180k,

4MHz

Электронный компонент: APE3112