The APExx24 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: 64k 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 20-bits
VPR can access up to 1024k x 10 bits voice data memory space.
Product Voice Duration (sec) Voice Pointer (VPR) ROM Size (10-bits)
a). 128 x 4-bits 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. (Regist er control)
b). PRB: 4-bits I/O Port B (13h) can be configured to input/output individually. (Mask option)
c). PR C: 4-bits I/O Port C (14h) can be programmed to input/output individually. (Register control)
d). PRD: 4-bits I/O Port D (15h) can be programmed to input/output individually. (Register control)
e). PRE: 4-bits I/O Port E (17h) can be programmed to input/ out put individually. (Register control)
f). PRF: 4-bits I/O Port F (18h) can be programmed to input/output individually. (Register control)
(6) On-chip clock generator: Resistive Clock Drive (RM) or Crystal oscillator (HM)
(7) Timer: 1-set Voice Interrupt (Timer0: a 9-bits auto-reload timer/counter).
(8) Stack: 2-level subroutine nesting.
(9) B uilt-in 4 Level Vol u me C ontrol can be prog r amm ed .
(10) Built-in 8 Level DAC Current Control 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)
1
Rev 1.5 2004/4/20
APExx24 Series
(12) External Reset: Port B[3] can be configured as reset pin. (Mask opt on)
(13) HALT and Release from HALT function to reduce power consumpt ion
(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 APExx24 Series
PC[15:0]
16-bit x 2 STACK
16-bit Data Pointer
00000h-0FFFFh
Data ROM for Melody
00000h-FFFFFh
Voice RO M for Vo ice
20-bit Voice Pointer
Reserved for Testing
Reset Vector
00000h
000FEh
000FFh-00400h
00401h
00000h-0FFFFh
Program ROM
2
Rev 1.5 2004/4/20
3.0 Pin Description
Pad Name Pin Attr. Description
PWM2/Cout
PWM1
Vdd1~3
PRA0~3
PRC0~3
PRD0~3
PRE0~3
PRF0~3
PRB0 / OSC2
PRB1 / IR
PRB2
Power
O
O PWM1 output.
I/O
I/O
I/O
I/O
PWM2 output, or Current Output of Audio.
Power supply during operation.
I/O port can be progr ammed to input/output in dividually.
Input type with weak pull-low or fix-input-floating capability.
Buffer Output type.
I/O port can be configured to input/output individually or HM OSC pad.
Input type with weak pull-low or fix-input-floating capability.
Buffer Output type.
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
I/O port can be configured to input/output individually.
Input type with weak pull-low or fix-input-floating capability.
Buffer Output type.
APExx24 Series
PRB3 / Reset
OSC1
GND1~4
I/O
I
Power
4.0 DC Characteristics
Symbol Parameter Vdd Min. Typ. Max. Unit Condition
Vdd Operating voltage 2.4 3 5.5 V depending on Freq.
Isb Standby
Iop
Iih
Ioh Output-high current
Iol Output-low current
Cout
dF/F Frequency stability -5 5 %
Supply
current
Input current
(Inter n al pu l l lo w)
DAC output current
(8-level option)
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.
RM/HM mode Oscillator input
Ground Potential
Operating
3 1
4.5 1
3 1
4.5 2.5
3 3
4.5 10
3 -3
4.5 -10
3 7
4.5 19
3 0.8 ~ 4.8
4.5 0.9 ~ 6.5
uA
mA
uA
mA
mA
Input ports with weak
4MHz, RM,
in HALT Mode
4MHz, RM,
IO Floating
pull-low
4MHz, RM
(IO ports)
4MHz, RM
(Full s cale)
Fosc(3v- 2.4v)
Fosc (3v)
dF/F Fosc lot variation -10 10 %
3
Vdd=3V, Rosc=430k,
4MHz
Rev 1.5 2004/4/20
APExx24 Series
FIGURE 2 : Frequency vs. Rosc (at 3V)
Resistor (Rosc ohms) 110k 200k 300k 430k
Frequency (MHz)
20
15
14.84 8.25 5.54 3.92
Rosc vs Freq.
14.84
10
Freq. (MHz)
5
0
0100200300400500
5.0 Application Circuit
8.25
Rosc (k ohm)
5.54
3.92
4
Rev 1.5 2004/4/20
6.0 Bonding Diagram of APE12724 / APE17024
2
5
6
8
9
X
Y
34
33
PRF3
31
32
PRF2 PRF1
30 29
PRF0
PRE3
28
PRE2
27
PRE1
26 25
PRE0
PRD3
24 23
PRD2
PRD1
APExx24 Series
20
22
PRD0
21
PRC3
19
18
PRC2 PRC1 Vdd1
GND1
ROM
1
GND4
GND3
Chip Size : 2330 um x 2872um
Pad Size : 80 um x 80 um
* The IC substrate must be connected to GND.