4518 Datasheet, PDF (10/160 Pages) Renesas Technology Corp – SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER

4518 Group
Register Y
Decoder
Skip decision
SZD instruction
SD instruction
RD instruction
CLD
instruction
Timer 1 underflow signal ^1/2
S
RQ
W23
0
FR22
W60
0
1
Timer 2 underflow signal _1/2
1
W62
Clock (input) for timer 1 event count
0
or period measurement signal input
1
Register Y
Decoder
Skip decision
SZD instruction
SD instruction
RD instruction
CLD
instruction
S
RQ
PWMOD
FR23
W43
0
1
W63
0
Clock (input) for timer 3 event count
1
(Note 1)
D6/CNTR0
(Note 2)
W10
W11
W50
W51
(Note 1)
D7/CNTR1
(Note 2)
W30
W31
Notes 1:
This symbol represents a parasitic diode on the port.
2: Applied potential to these ports must be VDD or less.
Port block diagram (2)
Rev.3.01 2005.06.15 page 10 of 157
REJ03B0008-0301