4552 Datasheet, PDF (15/145 Pages) Renesas Technology Corp – SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER

4552 Group
(Note 1)
D5/INT
(Note 1)
I13
Block diagram of external interrupt
I12
0
1
K20
One-sided edge
detection circuit
I11
0
1
Both edges
detection circuit
Timer 1 count start
synchronization
circuit input
EXF0
External 0
interrupt
SNZI0 instruction
Skip decision
K21
Level detection circuit
0
Edge detection circuit
1
Key-on wakeup
input
•
This symbol represents a parasitic diode on the port.
Rev.3.02 Dec 22, 2006 page 15 of 142
REJ03B0023-0302