4583 Datasheet, PDF (34/153 Pages) Renesas Technology Corp – SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER

4583 Group
PRELIMINARY
Notice: This is not a final specification.
Some parametric limits are subject to change.
Timer control register W4
W43 CNTR1 pin output control bit
W42
PWM signal
“H” interval expansion function control bit
W41 Timer 4 control bit
W40 Timer 4 count source selection bit
at reset : 00002
at RAM back-up : 00002
0 CNTR1 output invalid
1 CNTR1 output valid
0 PWM signal “H” interval expansion function invalid
1 PWM signal “H” interval expansion function valid
0 Stop (state retained)
1 Operating
0
XIN input
1 Prescaler output (ORCLK) divided by 2
R/W
TAW4/TW4A
Timer control register W5
at reset : 00002
R/W
at RAM back-up : state retained
TAW5/TW5A
W53 Not used
0
This bit has no function, but read/write is enabled.
1
W52 Period measurement circuit control bit
0 Stop
1 Operating
W51 W50
Count source
W51
Signal for period measurement selection
0 0 On-chip oscillator (f(RING/16))
bits
0 1 CNTR0 pin input
W50
1 0 INT0 pin input
1 1 Not available
Timer control register W6
at reset : 00002
at RAM back-up : state retained
W63 CNTR1 pin input count edge selection bit
0
1
W62 CNTR0 pin input count edge selection bit
0
1
W61 ^{CNTR1 output auto-control circuit}
0
selection bit
1
W60 D6/CNTR0 pin function selection bit
0
1
Note: “R” represents read enabled, and “W” represents write enabled.
Falling edge
Rising edge
Falling edge
Rising edge
CNTR1 output auto-control circuit not selected
CNTR1 output auto-control circuit selected
D6 (I/O) / CNTR0 (input)
CNTR0 (I/O) /D6 (input)
R/W
TAW6/TW6A
Rev.3.00 Aug 06, 2004 page 34 of 151
REJ03B0009-0300Z