4559 Datasheet, PDF (16/148 Pages) Renesas Technology Corp – SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER

4559 Group
LCD power supply
(VLC3)
LCD power supply
LCD control signal
L23
LCD power
0
supply
1
L23
1
0 1 ^L23
(Note 1)
SEG0/VLC3
(Note 2)
(Note 1)
LCD power supply
(VLC2)
LCD power supply
(VLC1)
0
L13
LCD power supply
LCD control signal
0 1 L20
L22
LCD power
0
supply
1
L22
0 1 L11
1
LCD power supply
0 _{LCD control}
L13 _signal
L21
0 1 L20
LCD power
supply
0
1
L21
0 1 ^L22
(Note 1)
SEG1/VLC2
(Note 2)
(Note 1)
0 1 ^L21
(Note 1)
SEG2/VLC1
(Note 2)
(Note 1)
1
0
L13
Reset signal
L20
L12
EPOF instruction
+
POF instruction
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.1.04 Aug 23, 2007 Page 16 of 146
REJ03B0188-0104