7
4Bit Single Chip Microcontroller
DMC42C4008
PIN DESCRIPTION
PIN
SYMBOL
P00
P01
P02
P03
P10
P11
P12
P13
P20
P21~ P23
P3
P4
P5
P6
P7
P8
P9
PA
PB
PC
PD
INT0/TI0
INT1/TI1
INT2/TI2
INT3
SCK
SI
SO
BUZ
CLO
Key scan
AD0~AD3
AD4~AD7
XI
XO
RESETB
TEST
AV
DD
, AV
SS
V
DD
, V
SS
SHARED
PIN
INT0/TI0
INT1/TI1
INT2/TI2
INT3
SCK
SI
SO
BUZ
CLO
-
-
-
-
-
-
-
-
AD0~AD3
AD4~AD7
-
-
P00
P01
P02
P03
P10
P11
P12
P13
P20
P4-P5
PA
PB
-
I/O
FUNCTION
RESET
PORT
TYPE
BPS
I/O
4-BIT I/O PORT
PORT 0
I/O
4-BIT I/O PORT
PORT 1
4-BIT I/O PORT
PORT 2
4-BIT I/O PORT. PORT3
4-BIT I/O PORT. PORT4
4-BIT I/O PORT. PORT5
4-BIT I/O PORT. PORT6
4-BIT I/O PORT. PORT7
4-BIT I/O PORT. PORT8
4-BIT I/O PORT. PORT9
4-BIT I/O PORT. PORTA
4-BIT I/O PORT. PORTB
4-BIT I/O PORT. PORTC
4-BIT I/O PORT. PORTD
External interrupt input port
rising/falling edge detection
Event pulse input port for the
timer/event counters
Serial clock in/out port
Serial data input port
Serial data output port
Buzzer output port
Clock output port
4, 6, 8, bits Key scan input selectable
Analog input for the 8-bit A/D converter
XI, XO are the input and output, resp-
ectively, of an inverting amplifier. The pins
can be configured for use as an on-chip
oscillator.
Reset input pin
Connect to V
SS
Power & ground for the A/D converter
Power & ground
BPS
I/O
I/O
BP
BP
BD
BP-PDND
INPUT
BP
BD
I
BP
I/O
I
O
O
O
I
I
BPS
BP
OSC1
-
-
-
-
I
I
IP1
BP1
NOTE ) P4, P5, PC, PD : 8-bit operation possible
DAEWOO [ DAEWOO SEMICONDUCTOR ]
