UPD75P3116 NEC, UPD75P3116 Datasheet - Page 9

• Manufacturer Part Number: UPD75P3116
• Description: 4-BIT SINGLE-CHIP MICROCONTROLLER
• Manufacturer: NEC

3.2 Non-port Pins (2/2)
Notes 1. The V
S0 to S15
S16 to S19
S20 to S23
COM0 to COM3 Output
V
BIAS
LCDCL
SYNC
LC0
Pin name
to V
Note 3
3. When the split resistor is incorporated
4. These pins are provided for future system expansion. Currently, only P30 and P31 are used.
2. The V
Note 3
LC2
S0 to S23: V
When the split resistor is not incorporated : High impedance
Output
Output P93 to P90
Output P83 to P80
Output
PP
LCX
I/O
I/O
I/O
—
pin does not operate normally if it is not connected with V
(X = 0, 1, 2) shown below are selected as the input source for the display outputs.
Alternate function
LC1
P30/MD0
P31/MD1
, COM0 to COM2: V
—
—
—
—
Segment signal output
Segment signal output
Segment signal output
Common signal output
Power supply for driving LCD
Output for external split resistor cut
Clock output for driving external expansion driver
Clock output for synchronization of external expansion driver
LC2
, COM3: V
: Low level
LC0
Function
DD
pin when normal operation.
after reset
PD75P3116
Note 1
Note 1
Note 2
Status
Input
Input
Input
Input
—
I/O circuit
type
G-A
G-B
E-B
E-B
—
—
H
H
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