
PLUS MAKE YOUR PRODUCTION A-PLUS
A
ASM4106C
DATA SHEET
PLUS INTEGRATED CIRCUITS INC.
A
Address:
3 F-10, No. 32, Sec. 1, Chenggung Rd., Taipei,
Taiwan 115, R.O.C.
(115)台北市南港區成功路㆒段 32 號 3 樓之 10.
TEL: 886-2-2782-9266
FAX: 886-2-2782-9255
WEBSITE : http: //www.aplusinc.com.tw
Sales E-mail: Mr. Jason
sales@aplusinc.com.tw
Technology E-mail: Mr. George
service@aplusinc.com.tw

ASM4106C Data Sheet
ASM4106C – VERY LOW-COST VOICE SYNTHESIZER WITH 4-BIT MICROPROCESSOR
1.0 General Description
The ASM4106C 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 5V
Internal Program ROM: 4K x 10-bit
1 sets of 17-bit DPR can access up to 128K 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
1
Rev 1.0

FIGURE 1.1 : Block Diagram of ASM4106C
Data Bus[3:0]
ASM4106C Data Sheet
(ADDR[16:12])
=00000b
COUT
PCLATCH(8)
PCH(8) PCL(4)
DPR3,2,1
DLATCH(10)
Data Bus[3:0
Accumlator
ALU(4)
Register(4)
One-Channel
( Voice synthesizer )
COUT
PC[11:0]
ADDR[16:0]
DPR[16:0]
P1,P2,P3,P4
enter test mode
Reset Chip
Reset Chip
ROM_Data[9:0]
Immediate(4
Stack
(2-Level)
ROM_ADDR[16:0]
Program
(Data)
ROM
SRAM
(64 x 4)
00h-1Fh
40h-5Fh
Clock Generator
Tes t s el ect
Power on Reset
RESET pin
Instruction Bus [9:0]
Instruction Bus [9:0]
Timer0(9)
OSC
VDD/GND
PRA0
ROM Latch
Instruction
Latch
Instruction
Decoder
Control Signal
Instruction Bus [9:0]
PRA(4)
PRB(2)
weak or strong
pull-low for PRA,
PRB, PRC
PRASL(4)
2
Rev 1.0

FIGURE 1.2 : External ROM Map of ASM4106C
ASM4106C Data Sheet
00000h-1FFFFh
12bit x 2 STACK
17-bit Data Pointer
Reserved for Testing
ram and data ROM
Pro
PC[11:0]
Reset Vector
00000h
00080h
00080h-003FFh
00400h
00000h-00FFFh
00FFFh(4K)
Data ROM
1FFFFh(128Kx10-bits)
3
Rev 1.0

1.2 Pin-Out
ASM4106C Pin-Out
VDD
PRA3-1
PRA0/RESET
OSC
COUT
GND
TEST
PRB0-1
I - Power supply during operation
I/O STI
I/O STI
I - RM mode Oscillator input
O - Current Output of Audio
I - Circuit Ground Potential
O - Enter Test Mode. ( TEST = High )
O Std./O.D. Output type with standard or Open-Drain output
1.3 Application circuit
Std./O.D.
Std./O.D.
ASM4106C Data Sheet
I/O port with programmable strong pull-low or weak pull-low or fix-inputfloating capability
Output type with standard or Open-Drain output
I/O port with programmable strong pull-low or weak pull-low or fix-inputfloating capability
Output type with standard or Open-Drain output
Mask option selected as an external RESET pin with weak pull-low capability
4
Rev 1.0

1.4 Bonding Diagram
ASM4106C Data Sheet
128K x 10 bit RO M
ASM4106C
1
CHIP SIZE: X= 1550+100(um) , Y= 2170+100(um)
2
3
ASM4106C Pad Location
PAD # PAD Name X Y PAD # PAD Name X Y
1 RA_PAD[3] -664.92 -675.72 7 TEST_PAD 105.44 -1000.4
2 RA_PAD[2] -664.92 -803.84 8 ACOUT 303.96 -1000.4
3 RA_PAD[1] -662.64 -1000.4 9 VDD 683.04 -1000.4
4 RA_PAD[0] -468.24 -1000.4 10 RB_PAD[0] 664.92 -799.4
5 AOSC -281.04 -1000.4 11 RB_PAD[1] 664.92 -681
6 GND -111.72 -1000.4
Chip Size: X=1550+100 (um), Y=2170+100 (um)
6 7 8 9 5 4
11
10
5
Rev 1.0

ASM4106C Data Sheet
1.5 DC Characteristics for ASM4106C
SYMBOL PARAMETER VDD MIN. TYP. MAX. UNIT CONDITION
VDD
Isb
Iop
Iih
Ioh
Iol
dF/F
dF/F Fosc VARIATION -20 20 %
OPERATING
VOLTAGE
SUPPLY
CURREN
T
INPUT CURRENT
/Internal pull low
OUTPUT HIGH
CURRENT
OUTPUT LOW
CURRENT
FREQUENCY
STABILITY
STANDBY
OPERATING
2.4 3 5 V depending on Freq.
31
51
32
57
33
59
5 -5.2
3-3
5-8
37
520
-10 10 %
uA
mA
uA
mA
4MHz, RM
in HALT Mode
4MHz, RM
IO Floating
4MHz, RM
in HALT Mode
(IO Ports with
weak pull-high
4MHz, RM
(IO ports)
Fosc(3v)-
Fosc(2.4v)
VDD=3V,
Rosc=980k, 4MHz
pull-low)
Fosc (3v)
FIGURE 1.3 : Frequency Range for Rosc in RM mode
Resistor(k ohm) 1200 1000 820 470
3v Freq.(MHz)
8
6
4
Freq. MHz
2
0
0 200 400 600 800 1000 1200 1400
3.1
Rosc & Freq.
7.44
3.87
Rosc k ohm
4.53 7.44
4.53
3.87
3.1
6
Rev 1.0