455A Datasheet, PDF (16/148 Pages) Renesas Technology Corp – SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER

455A Group
LCD power supply
(VLC3)
LCD power supply
(VLC2)
LCD power supply
(VLC1)
Reset signal
L12
EPOF instruction
+
POF2 instruction
LCD power supply
LCD control signal
L23
L23
0
1
LCD power
supply
L13
LCD power supply
1
LCD control
0
signal
0 1 ^L20
L13
1
0
0 1 ^L11
0 1 ^L20
L22
L22 ^{LCD power}
0
supply
1
LCD power supply
LCD control
signal
L21
L21 LCD power
0
supply
1
L13
1
0
L20
0 1 L23
(Note 1)
SEG0/V LC3
(Note 2)
(Note 1)
0 1 L22
(Note 1)
SEG1/V LC2
(Note 2)
(Note 1)
0 1 L21
(Note 1)
SEG2/V LC1
(Note 2)
(Note 1)
Notes 1.
This symbol represents a parasitic diode on the port.
2. Applied potential to these ports must be VDD or less.
Fig 10. Port block diagram (8)
Rev.1.01 Feb 15, 2008 Page 16 of 146
REJ03B0224-0101