SD42C4404 Datasheet, PDF (7/19 Pages) AUK corp – 4Bit Single Chip Microcontroller

Pin Description
SD42C/P4404
PIN
SYMBOL
P00
P01
P10
P11
P12
P13
P4
P5
P6
P8
PA
INT0/TI0
INT1
SCK
SI
SO
BUZ
Key Scan
AD0~AD3
XI
XO
RESETB
TEST
V_DD, V_SS
SHARED
PIN
INT0/TI0
INT1
SCK
SI
SO
BUZ
-
-
-
-
AD0~AD3
P00
P01
P10
P11
P12
P13
P4-P5
PA
-
-
-
-
I/O
FUNCTION
4-BIT I/O PORT
I/O
PORT 0
I/O
4-BIT I/O PORT
PORT 1
4-BIT I/O PORT. PORT4
4-BIT I/O PORT. PORT5
4-BIT I/O PORT. PORT6
4-BIT I/O PORT. PORT8
4-BIT I/O PORT. PORTA
External interrupt input port
I
rising/falling edge detection
Event pulse input port for the
timer/event counters
I/O
Serial clock in/out port
I
Serial data input port
O
Serial data output port
O
Buzzer output port
I
Key scan input
I
Analog input for the 8-bit A/D converter
I ^{XI, XO are the input and output,}
respectively, of an inverting amplifier.
O ^{The pins can be configured for use as an}
on-chip oscillator.
I
Reset input pin
I
Normally connect to V_SS
Power & ground
RESET
INPUT
PORT
TYPE
BPS
BPS
BPS
BD
BP
BD
BPS
BPS
BPS
BP
OSC1
IP1
IP2
KSI-W031-000
7