PD17012_15 Datasheet, PDF (239/320 Pages) Renesas Technology Corp – 4-BIT SINGLE-CHIP MICROCONTROLLERS WITH DIGITAL TUNING SYSTEM HARDWARE

µPD17012, 17P012
Figure 20-5. Output Waveforms of Segment and Key Source Signals
(When “1” Is Output as Key Source Signal)
COM2 pin
COM1 pin
COM0 pin
Dot A
Dot B
Dot C
Segment signal
Key source signal
Each segment/key source signal output pin (LCDn/KSn)
Common signal
COM2 pin
VDD
1/2 VDD
GND
COM1 pin
VDD
1/2 VDD
GND
COM0 pin
VDD
1/2 VDD
GND
Each segment pin (pin outputting "1" as key source)
<1> A = off, B = off, C = off
<2> A = off, B = off, C = on
C = on
C = on
C = on
C = on
<3> A = off, B = on, C = off
B = on
B = on
B = on
B = on
<4> A = off, B = on, C = on
C = on B = on
C = on B = on
C = on B = on
C = on B = on
<5> A = on, B = off, C = off
A = on
A = on
A = on
A = on
A = on
<6> A = on, B = off, C = on
A = on C = on
A = on C = on
A = on C = on
A = on C = on
A = on
<7> A = on, B = on, C = off
A = on
<8> A = on, B = on, C = on
B = on A = on
B = on A = on
B = on A = on
B = on A = on
A = on C = on B = on A = on C = on B = on A = on C = on B = on A = on C = on B = on A = on
Key source signal
220 µs
2 ms 2 ms 2 ms
2 ms
2 ms
2 ms
2 ms
2 ms
2 ms
2 ms
2 ms
2 ms
2 ms
Data Sheet U10101EJ4V0DS
237