µPD75312(A), 75316(A)
3.2 NON PORT PINS
Also Served
Pin Name Input/Output As
Functon
When Reset
TI0
PTO0
PCL
BUZ
SCK
SO/SB0
SI/SB1
INT4
Input
Input/
Output
Input/
Output
Input/
Output
Input/
Output
Input/
Output
Input/
Output
Input
INT0
INT1
Input
INT2
Input
P13
Timer/event counter external event pulse Input
P20
Timer/event counter output
P22
Clock output
P23
Fixed frequency output (for buzzer or for trim-
ming the system clock)
P01
Serial clock input/output
Serial data output
P02
Serial bus input/output
Serial data input
P03
Serial bus input/output
Edge detection vector interrupt input (both
P00
rising and falling edge detection are effective)
P10
Edge detection vector
Clock synchronous
interrupt input (detection
P11
edge can be selected)
Asynchronous
P12
Edge detection testable
Asynchronous
input (rising edge detection)
Input
Input
Input
Input
Input
Input
Input
Input
Input
Input
Input/
Output
Circuit
TYPE*1
B -C
E-B
E-B
E-B
F -A
F -B
M -C
B
B -C
B -C
KR0-KR3
KR4-KR7
Input/
Output
Input/
Output
S0-S23 Output
P60-P63 Parallel falling edge detection testable input
P70-P73 Parallel falling edge detection testable input
—
Segment signal output
Input
F -A
Input
F -A
*2
G-A
S24-S31
COM0-
COM3
VLC0-VLC2
Output
Output
—
BP0-7 Segment signal output
—
Common signal output
—
LCD drive power
Internal dividing resistor (mask option)
*2
G-C
*2
G-B
—
—
BIAS
Output
—
Disconnect output for external expanded driver
*3
—
Input/
LCDCL*4 Output
P30
Externally expanded driver clock output
Input
E-B
SYNC*4
Input/
Output
P31
Externally expanded driver sync clock output
Input
E-B
To connect the crystal/ceramic oscillator to the
main system clock generator. When inputting the
X1, X2 Input
—
external clock, input the external clock to pin X1,
—
—
and the reverse phase of the external clock to pin
X2.
XT1
Input
To connect the crystal oscillator to the subsystem
—
clock generator.
When the external clock is used, pin XT1 inputs the
—
—
external clock. In this case, pin XT2 must be left
XT2
—
—
open.
Pin XT1 can be used as a 1-bit input (test) pin.
(to be cont'd)
11