1
4Bit Single Chip Microcontroller
DMC42C1106
DESCRIPTION
The DMC42C1106 is a 4-bit single chip
microcomputer designed with CMOS silicon
gate technology.
The DMC42C1106 includes such peripherals
as various timers, A/D converter (8ch), serial
communication interface (8bit),LCD Driver
on-chip oscillator and clock circuit.
SEG15 1
64 SEG14
It provides the hardware features, architectural
SEG16 2
63 VLC0
enhancements and instructions which are
SEG17 3
62 VLC1
necessary to make it a powerful and cost
SEG18 4
61 VLC2
effective controller for applications requiring
SEG19 5
60 COM0
up to 64K bytes of program memory.
SEG20 6
59 COM1
P02 / INT2 7
58 COM2
P01 / INT1 / TI1 8
57 COM3
PIN CONFIGURATION
P00 / INT0 / TI0 9
56 SEG13
P13/BUZ 10
55 SEG12
P12 / SO 11
54 SEG11
P11 / SI 12
53 SEG10
P10 / SCK 13
52 SEG9
P23 14
51 SEG8
P22 15
50 SEG7
P21 16
49 SEG6
P01/INT1/TI1 1
51 COM2
P20 / CLO 17
48 SEG5
P00/INT0/TI0 2
50 COM3
PC3 18
47 SEG4
P13 / BUZ 3
49 SEG13
PC2 19
46 SEG3
P12 / SO 4
48 SEG12
P43 20
45 SEG2
P11 / SI 5
47 SEG11
P42 21
44 SEG1
P10 / SCK 6
46 SEG10
P41 22
43 SEG0
P23 7
45 SEG9
P40 23
42 PA0 / AD0
P22 8
44 SEG8
PB3 / AD7 24
41 PA1 / AD1
P21 9
43 SEG7
PB2 / AD6 25
40 PA2 / AD2
P20 / CLO 10
42 SEG6
PB1 / AD5 26
39 PA3 / AD3
PC3 11
41 SEG5
PB0 / AD4 27
38
PC2 12
40 SEG4
XTI 28
37 AV
SS
P43 13
39 SEG3
XTO 29
36 TEST
P42 14
38 SEG2
XI 30
35 RESETB
P41 15
37 SEG1
XO 31
34 DGRMEN
P40 16
36 SEG0
V
SS
32
33
PB3 / AD7 17
35 PA0 / AD0
PB2 / AD6 18
34 PA1 / AD1
PB1 / AD5 19
33 PA2 / AD2
PB0 / AD4
D
M
C
4
2
C
1
1
0
XTI
XTO
XI
XO
V
SS
V
DD
DGRMEN
RESETB
TEST
AV
SS
AV
DD
PA3 / AD3
DMC42C1106
V
DD
64
63 62
61
60
59
58
57
56
55
54
53
52
20
21 22 23
24
25
26
27
28
29
30
31
32
AV
DD
2
4Bit Single Chip Microcontroller
DMC42C1106
FEATURE
Memory mapped I/O
8-bit serial communication interface
- External / Internal clock selection
Program memory : 6144 x 10bits
- Mode : Transmit Receive
Receive only
Data memory : 384 x 4bits
Clock continuous
Instructions
LCD controller/driver
- Various bit manipulation
- selectable number of segments (21)
- 8-bit data operation
- Display mode selection
- 7-bit relative branch
Static
- 1 byte absolute call
1/2 duty (1/2 bias)
1/3 duty (1/2 bias)
Instruction cycle times
1/3 duty (1/3 bias)
- Main ( XI = 4.19MHz )
1/4 duty (1/3 bias)
. 15.3 us ( XI/64 = 65.5KHz )
. 1.91 us ( XI/8 = 524.0KHz )
50 I/O Pins
. 0.95 us ( XI/4 = 1.05MHz )
- LCD driver output pins : 25
- Sub ( XTI = 32.768KHz )
. Segment ouput pins : 9
. 122 us ( XTI/4 = 8.19KHz )
. Segment CMOS outputpins : 12
. Common ounput pins : 4
4 Register Bank
- CMOS input/output pins : 25
General register : 8 x 4-bit respectively
Power saving mode
- STOP : Main clock, CPU clock stop
Accumulator
- STBY : Only CPU clock stop
- Bit Accumulator (CY), 4 bit Accumulator (A), Main clock operation
8 bit Accumulator (XA)
Package : 64 QFP, 64 SDIP
Multiple vectored interrupt source
- External interrupt : 3
- Internal interrupt : 6
APPLICATION
Watch timer
- fast mode : 3.91 msec
VTR, Camera, Rice Cooker, Telephone
- normal mode : 0.5 sec
Blood Pressure Gauge, CD Player
- buzzer output : 1, 2, 4 KHz
Basic interval timer
- 8 kinds of period
- Used stabilization wait timer to wake up Stop mode
Two 8-bit timer / event counters
3
4Bit Single Chip Microcontroller
DMC42C1106
P00
-
P02
P10
-
P13
P20
-
P23
P40
-
P43
VLC0
-
VLC2
COM0
-
COM3
SEG0
-
SEG20
PA0
-
PA3
PB0
-
PB3
PC2
-
PC3
DMC42 CORE
BASIC
INTERVAL
TIMER
IRQBT
WATCH
TIMER
IRQWT
P13/BUZ
TIMER/
EVENT
COUNTER 0
IRQTC
0
P00 / TI0
P01 / TI1
SERIAL
INTER-
FACE
IRQS0
P10 / SCK
P11 / SI
P12 / SO
8-BIT
ADC
IRQAD
PA0~PA3,
PB0~PB3/
AD0~AD7
PORT0
PORT1
PORT2
PORT4
LCD
CONTR
OL
/
DRIVER
DISPLAY
RAM
PORTA
PORTB
PORTC
PROGRAM
MEMORY
(6144 X 10BITS)
Fx / 2
CPU
CLOCK
AV
DD
AV
SS
V
DD
P20/CLO
V
SS
RESETB
CLOCK
OUTPUT
CONTR
OL
CLOCK
DIVIDER
CLOCK
GENERATO
R
STOP/
IDLE
CONTRO
L
INTERRUPT
CONTROL
XTI
XTO
BLOCK DIAGRAM
TIMER/
EVENT
COUNTER 1
IRQTC
1
DATA MEMORY
(384 X 4BITS)
XO
XI
n
P00 / INT0
P02 / INT2
P01 / INT1
TEST
4
4Bit Single Chip Microcontroller
DMC42C1106
PROGRAM MEMORY (ROM)
VECTOR ADDRESS
CONTENTS
Prioty
INTERRUPT SUORCE
0000H
VECTOR
0000H
0
RESET
Reset Signal
ADDRESS AREA
0002H
1
IRQBT
Basic Interval Timer
001FH
0004H
2
IRQ0
External interrupt 0
0020H
ZERO-PAGE
0006H
3
IRQ1
External interrupt 1
CALL AREA
0008H
4
IRQTC0
Timer Event Counter 0
002FH
000AH
5
IRQTC1
Timer Event Counter 1
0060H
000CH
6
IRQ2
External interrupt 2
000EH
0010H
0012H
9
IRQS0
Serial I/O 0
0014H
10
IRQAD
8 bit ADC
6K Byte
0016H
0018H
12
IRQWT
Watch Timer
001AH
13
IRQKS
Key Scan
001CH
17FFH
001EH
15
-
reserved
DATA MEMORY (RAM)
DIRECT
INDIRECT
STACK
GENERAL
m
@HL
@DE @DL
REGISTER
$00
RB=0
RB=1
PAGE0
RB=2
RB=4
(256 Byte)
MP=0
SPS=0
$FF
$00
PAGE1
(128 Byte)
MB=0
MB=0
MP=1
SPS=1
BANK 0 $FF
(1K)
$00
PAGE2
(256 Byte)
MP=2
SPS=2
LCD Display RAM
$FF
(2E0~2F4)
$00
PAGE3
I/O
(256 Byte)
MEMORY
MP=3
; Usable
$FF
5
4Bit Single Chip Microcontroller
DMC42C1106
I/O ADDRESS MAP
ADDRESS
Hardware Module Name
R/W
Addressing Unit
REMARKS
INITIAL
b3
b2
b1
b0
1 bit 4 bit
8bit
VALUE
318H
Stack pointer low (SPL)
R/W
O
Stack pointer low
E
319H
Stack pointer high (SPH)
R/W
O
stack pointer high
F
31AH
SP3
SP2
SP1
SP0
R/W
O
Stack Page Select Low (SPSL)
0
31BH
-
-
SP5
SP4
R/W
O
Stack Page Select High (SPSh)
0
31CH
AC
IS1
IS0
R/W
O
O
O
Psw low (PSWL)
0
31DH
CY
Z
OV
T
Psw high (PSWH)
0
320H
T/E counter mode register 0
W
320H.3
O
Clock source select. counter
00
321H
(TMOD0)
start (ch0)
322H
T/E counter register 0
R
O
readable count value (ch0)
00
323H
(TMCNT0)
324H
T/E reference register 0
W
O
count reference register (ch0)
FF
325H
(TMREF0)
326H
T/E counter mode register 1
W
326H.3
O
clock source select. counter start
00
327H
(TMOD1)
(ch1)
328H
T/E counter register 1
R
O
readable count value (ch1)
00
329H
(TMCNT1)
32AH
T/E reference register 1
W
O
count reference register (ch1)
FF
32BH
(TMREF1)
332H
Basic Timer mode register(BMOD)
R/W 332H.3
clock select, Bit start
0
334H
Basic interval timer count
R
O
readable count register
00
335H
register(BITCNT)
336H
Watch timer mode register
R/W 336H.3
O
clock/buzzer select. bit3
00
337H
(WMOD)
readable
386H
Adc8 mode register (ADCM8)
R/W 386H.3
O
analog input pin select. start &
00
387H
low 4bit readable
388H
Adc8 output latch (ADCOL8)
R
O
8bit conversion data
00
389H
390H
Lcd display mode register
W
O
duty/bias/clock/seg/bitport
00
391H
(LCDMD)
select
392H
Lcd control register (LCON)
W
O
display ON/OFF
0
3A0H
Power control register
O
system clock select, idle, stop
00
(PCON)
R/W
mode
3A2H
Operating mode register (SCMOD)
R/W
O
main/sub system clock select
0
3A4H
Clock output mode register
W
O
cpu clock output select, clock
00
(CLOMD)
out EN/DIS
3A8H
Serial interface mode register0
W
3A8H.3
O
receive/transmit mode. clock
00
3A9H
(SIOM0)
select
3AAH
Serial interface buffer0
R/W
serial shift register 0
XX
3ABH
(SBUFF0)
3ACH
Serial interface mode register1
W 3ACH.3
O
receive/transmit mode, clock
00
3ADH
(SIOM1)
select
3AEH
Serial interface buffer1
R/W
O
serial shift register 1
00
3AFH
(SBUFF1)
3B2H
Power on flag (PONF)
P/W 3B2H.0
O
power on reset flag
0
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