UPD753012GC NEC, UPD753012GC Datasheet - Page 10

• Manufacturer Part Number: UPD753012GC
• Description: 4-BIT SINGLE-CHIP MICROCONTROLLER
• Manufacturer: NEC

3.2 Pins Other than Port Pins (1/2)
Notes 1.
10
TI0
TI1
TI2
PTO0
PTO1
PTO2
PCL
BUZ
SCK
SO/SB0
SI/SB1
INT4
INT0
INT1
INT2
KR0-KR3
KR4-KR7
S0-S23
S24-S31
COM0-COM3
V
BIAS
LCDCL
SYNC
X1
X2
Pin Name
LC0
-V
LC2
2.
3.
4.
Note 4
Note 4
Circled characters indicate the Schmitt trigger input.
Each displays output selects the following V
S0-S31: V
When a split resistor is contained .......
When no split resistor is contained ......
These pins are provided for future system expansion. At present, these pins are used only as pins
P30 and P31.
Input/Output
Input/Output
Output
Output
Output
Output
Output
Output
Output
Input
Input
Input
Input
Input
Input
Input
–
–
LC1
, COM0-COM2: V
Function Pin
P12/TI1/TI2
P22/PTO2
P12/INT2
BP0-BP7
P22/PCL
P60-P63
P70-P73
Dual
P13
P20
P21
P23
P01
P02
P03
P00
P10
P11
P30
P31
–
–
–
–
–
Inputs external event pulses to the timer/event
counter.
Timer/event counter output
Clock output
Any frequency output (for buzzer output
or system clock trimming)
Serial clock input/output
Serial data output
Serial bus data input/output
Serial data input
Serial bus data input/output
Edge detection vectored interrupt input (both
rising edge and falling edge detection)
Edge detection vectored
interrupt input (detection
edge can be selected)
Noise eliminator can be
selected. (Only P10/INT0)
Edge-detection-testable input
Falling edge detection testable input
Falling edge detection testable input
Segment signal output
Segment signal output
Common signal output
LCD drive power
On-chip split resistor is enable (mask option).
Output for external split resistor disconnect
Clock output for externally expanded driver
Clock output for externally expanded driver sync
Crystal/ceramic connection pin for the main
system clock oscillator. When inputting the
external clock, input the external clock to pin
X1, and the reverse phase of the external clock
to pin X2.
LC2
, COM3: V
Low level
High impedance
LCX
LC0
as input source.
.
Function
Asynchronous
With noise eliminator
asynchronous selection
possible
Asynchronous
PD753012, 753016, 753017
At Reset
Note 2
Note 2
Note 2
Note 3
Input
Input
Input
Input
Input
Input
Input
Input
Input
Input
–
–
TYPE
I/O Circuit
M -C
B -C
B -C
B -C
F -A
F -B
F -A
F -A
G-D
H-A
G-B
E-B
E-B
E-B
B
–
–
–
Note 1