6F-3 NO.7, LANE 75, TA-AN ROAD, SEC.1, TAIPEI, TAIWAN, R.O.C.
http://www.aplusinc.com.tw
台北市大安路一段75巷7號6F-3 TEL:886-2-27818277 FAX:886-2-27815779
ASM0406CB/0906CB
DATA SHEET
Rev 1.0
1
ASM0406CB/0906CB
1.0 General Description
The ASM0406CB/0906CB is very low cost voice synthesizer with 4-bit microprocessor. It has
various features including 4-bit ALU, ROM, RAM, I/O ports, timers, clock generator,
watchdog timer ( WDT ), voice synthesizer, etc. It consists of 22 instructions in the device.
With CMOS technology and halt function can minimize power dissipation. Its architecture is similar
to RISC,with two stages of instruction pipeline. It allows all instructions to be executed in a single
cycle, except for program branches and data table read instructions (which need two
instruction cycles).
1.1 Feature
Single power supply can operate from 2.4V through 5.5V
Internal Program ROM: 4K x 10-bit
1 sets of 15-bit DPR can access up to 32K x 10 bits data memory space
Data Registers:
• 64 x 4-bit data RAM (00-1Fh plus 40h-5Fh)
• Unbanked special function registers (SFR) range: 20h-3Fh
I/O Ports:
• PRA: 4-bit I/O Port A (2Bh)
• PRB: 2-bit Output Port B (2Dh)
On-chip clock generator: Resistive Clock Drive(RM)
Timer: 1
• Timer0: a 9-bit auto-reload timer/counter
Stack: 2-level subroutine nesting
HALT and Release from HALT function to reduce power consumption
Watch Dog Timer (WDT)
Instruction: 1-cycle instruction except for table read and program branches which are 2-cycles
Number of instruction: 22
The Voice function can be implemented by microprocessor instruction
• One 8-bit COUT output for ASM0406CB/0906CB
ASM0406CB/0906CB
- VERY LOW-COST VOICE SYNTHESIZER WITH 4-BIT MICROPROCESSOR
Rev 1.0
2
FIGURE 1.1 : Block Diagram of ASM0406CB/0906CB
COUT
OSC
VDD/GND
ROM
PC[11:0]
ROM Latch
Instruction
Latch
Instruction
Decoder
PCH(8) PCL(4)
PCLATCH(8)
DPR3,2,1 Program
DLATCH(10)
Clock Generator
Power on Reset
Test select
P1,P2,P3,P4
enter test mode
Timer0(9)
Reset Chip
Stack
(
12
)
Data Bus[3:0
]
Instruction Bus [9:0]
ROM_ADDR[14:0]
ROM_Data[9:0]
Data Bus[3:0]
Control Signal
ADDR[14:0]
=000b
(ADDR[14:12])
PRASL(4)
weak or strong
pull-low for PRA,
(Data)
Instruction Bus [9:0]
Instruction Bus [9:0]
( Voice synthesizer )
One-Channel
SRAM
(64 x 4)
40h-5Fh
(2-Level)
ALU(4)
Register(4)
Accumlator
(
4
)
Immediate
(
4
)
DPR[14:0]
RESET pin
Reset Chip
PRA0
00h-1Fh
PRA(4)
PRB(2)
PRB, PRC
COUT
ASM0406CB/0906CB
Rev 1.0
3
FIGURE 1.2 : External ROM Map of ASM0406CB/0906CB
Data ROM
12bit x 2 STACK
Reset Vector
07FFFh(32Kx10-bits)
00FFFh(4K)
00000h-00FFFh
Pro
g
ram and data ROM
15-bit Data Pointer
PC[11:0]
00000h-07FFFh
Reserved for Testing 00080h-003FFh
00400h
00000h
00080h
ASM0406CB/0906CB
Rev 1.0
4
1.2 Pin-Out
ASM0406CB/0906CB Pin-Out
VDD I - Power supply during operation
PRA3-1 I/O STI
Std./O.D.
I/O port with programmable strong pull-low or weak pull-low or fix-input-
floating capability
Output type with standard or Open-Drain output
PRA0/RESET I/O STI
Std./O.D.
I/O port with programmable strong pull-low or weak pull-low or fix-input-
floating capability
Output type with standard or Open-Drain output
Mask option selected as an external RESET pin with weak pull-low capability
OSC I - RM mode Oscillator input
COUT O - Current Output of Audio
GND I - Circuit Ground Potential
TEST O - Enter Test Mode. ( TEST = High )
PRB0-1 O Std./O.D. Output type with standard or Open-Drain output
1.3 Application circuit
ASM0406CB/0906CB
Rev 1.0
5
1.4 Bonding Diagram
Substrate must be connected to GND.
ASM0406CB/0906CB Pad Location Chip Size: X= 1550 + 80 (um), Y=1360 + 80 (um)
PAD # PAD Name X Y PAD # PAD Name X Y
1 RA3 -664.92 -275.52 7 TEST 105.44 -600.2
2 RA2 -664.92 -403.64 8 COUT 303.96 -600.2
3 RA1 -662.64 -600.2 9 VDD 683.04 -600.2
4 RA0 -468.24 -600.2 10 RB0 664.92 -399.2
5 OSC -281.04 -600.2 11 RB1 664.92 -280.8
6 GND -111.72 -600.2
ASM0406CB/0906CB
CHIP SIZE: X= 1550+80(um) , Y= 1360+80(um)
32K x 10 bit ROM
6 7 8 9 5 4
1
2
3
10
11
ASM0406CB/0906CB
Rev 1.0
6
1.5 DC Characteristics for ASM0406CB/0906CB
SYMBOL PARAMETER VDD MIN. TYP. MAX. UNIT CONDITION
VDD OPERATING VOLTAGE 2.4 3 5.5 V depending on Freq.
31
Isb STANDBY 51
uA 4MHz, RM
in HALT Mode
32
Iop
SUPPLY
CURRENT OPERATING 57mA 4MHz, RM
IO Floating
33
59
Iih INPUT CURRENT
/Internal pull low 5-5.2
uA
4MHz, RM
in HALT Mode
(IO Ports with weak
pull-high pull-low)
3-3
Ioh OUTPUT HIGH CURRENT 5-8
37
Iol OUTPUT LOW CURRENT 520
34
Cout DA CURRENT OUT
(FULL SCALE) 55.2
mA 4MHz, RM
(IO ports)
dF/F FREQUENCY
STABILITY -10 10 % Fosc(3v- 2.4v)
Fosc (3v)
dF/F Fosc VARIATION -20 20 % VDD=3V,
Rosc=850k, 4MHz
FIGURE 1.3 : Frequency Range for Rosc in RM mode
Resistor(k ohm) 1200 1000 820 560
3v Freq.(MHz) 2.92 3.51 4.13 7.02
Rosc & Freq.
2.92
3.51
4.13
7.02
0
2
4
6
8
0 200 400 600 800 1000 1200 1400
Rosc k ohm
Freq. MHz
ASM0406CB/0906CB