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PD75P3116
10 Data Sheet U11369EJ3V0DS
3.2 Non-Port Pins (2/2)
Pin Name I/O Alternate Function Status I/O Circuit
Function After Reset Type
S0 to S15
Output Segment signal output Note 1 G-A
S16 to S19
Output P93 to P90 Segment signal output Input H
S20 to S23
Output P83 to P80 Segment signal output Input H
COM0 to COM3
Output Common signal output Note 1 G-B
VLC0 to VLC2 Power supply for driving LCD
BIAS Output Output for external split resistor cut Note 2
LCDCLNote 3 Output P30/MD0 Clock output for driving external expansion driver Input E-B
SYNCNote 3 Output P31/MD1 Clock output for synchronization of external expansion driver Input E-B
Notes 1. VLCX (X = 0, 1, 2) is selected as the input source for the display outputs as shown below.
S0 to S23: VLC1, COM0 to COM2: VLC2, COM3: VLC0
2. When the split resistor is incorporated: Low level
When the split resistor is not incorporated: High impedance
3. These pins are provided for future system expansion. Currently, only P30 and P31 are used.