4507 Datasheet, PDF (108/115 Pages) Renesas Technology Corp – SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER

4507 Group
Basic timing diagram
Parameter
Machine cycle
Mi
Pin name
Clock
XIN : high-speed mode
(System clock = f(XIN))
XIN : middle-speed mode
(System clock = f(XIN)/2)
XIN : low-speed mode
(System clock = f(XIN)/4)
XIN : default mode
(System clock = f(XIN)/8)
Port D output
D0, D1, D2/C, D3/K,
D4, D5
Port D input
D0, D1, D2/C, D3/K,
D4, D5
Port P0, P1, P2, P3
output
P00–P03
P10–P13
P20, P21
P30, P31
Port P0, P1, P2, P3
input
P00–P03
P10–P13
P20, P21
P30, P31
Timer output
CNTR
Timer input
CNTR
Interrupt input
INT
Mi+1
Rev.3.01 2005.02.04 page 108 of 111
REJ03B0107-0301