3858 Group
CNTR
switch bit
2 active edge
Data bus
Programmable one-shot
“1”
“0”
generating mode
P42/INT1
Programmable one-shot
generating circuit
Programmable one-shot
generating mode
To INT1 interrupt
request bit
Programmable waveform
generating mode
D
T
Output level latch
Q
Pulse output mode
CNTR
2
active edge
switch bit
S
“0”
Q
Q
T
“1”
Pulse output mode
“001”
“100”
“101”
Timer Z1 operating
mode bits
Timer Z1 low-order latch Timer Z1 high-order latch
Timer Z1 low-order Timer Z1 high-order
To timer Z1 interrupt
request bit
Port P2
latch
2
Port P2
2
direction register
Pulse period measurement mode
Pulse width measurement mode
Edge detection circuit
To CNTR
2 interrupt
request bit
“1”
“0”
“1”
f(XCIN
)
P22/CNTR2
“0”
CNTR
switch bit
2 active edge
Timer Z1 count stop bit
Timer/Event
counter mode
switch bit
Clock for
timer Z1
X
IN
Count source
selection bit
Divider
(1/2, 1/4, 1/8, 1/16, 1/32, 1/64, 1/128, 1/256, 1/512, 1/1024)
X
CIN
Fig. 20 Block diagram of timer Z1
Rev.1.10 Apr 3, 2006 page 30 of 75
REJ03B0139-0110
RENESAS [ RENESAS TECHNOLOGY CORP ]
