4552 Datasheet, PDF (10/145 Pages) Renesas Technology Corp – SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER

4552 Group
LCD power supply
LCD control
signal
key-on
wakeup
input
Edge detection circuit
C1j
K00
IAP0
Register A instruction
Aj
FR00
LCD power
supply
Aj
OP0A instruction
D
TQ
C1j
01
(Note 1)
P00/SEG21, P01/SEG22
(Note 1)
Pull-up transistor
PU0j
LCD power supply
LCD control
signal
key-on
wakeup
input
Edge detection circuit
C1k
K01
IAP0
Register A instruction
Ak
FR01
LCD power
supply
Ak
OP0A instruction
D
TQ
C1k
01
(Note 1)
P02/SEG23, P03/SEG24
(Note 1)
Pull-up transistor
PU0K
Notes 1:
This symbol represents a parasitic diode on the port.
2: Applied potential to these ports must be VDD or less.
3: j represents bits 0 and 1.
4: k represents bits 2 and 3.
Port block diagram (3)
Rev.3.02 Dec 22, 2006 page 10 of 142
REJ03B0023-0302