M34283 Datasheet, PDF (59/64 Pages) Renesas Technology Corp – SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER

4283 Group
REGISTER STRUCTURE
Timer control register V1
at reset : 0002
at RAM back-up : 0002
W
V12 Carrier wave output auto-control bit
V11 Timer 1 count source selection bit
V10 Timer 1 control bit
0 Auto-control output by timer 1 is invalid
1 Auto-control output by timer 1 is valid
0 Carrier wave output (CARRY)
1 Bit 5 of watchdog timer (WDT)
0 Stop (Timer 1 state retained)
1 Operating
Timer control register V2
at reset : 00002
at RAM back-up : 00002
W
V23 Carrier wave “H” interval expansion bit
0 To expand “H” interval is invalid
1 To expand “H” interval is valid (when V22=1 selected)
0 Carrier wave generation function invalid
V22 Carrier wave generation function control bit
1 Carrier wave generation function valid
V21 Timer 2 count source selection bit
0 f(XIN)
1 f(XIN)/2
V20 Timer 2 control bit
0 Stop (Timer 2 state retained)
1 Operating
Logic operation selection register LO
at reset : 002
at RAM back-up : 002
W
LO1
Logic operation selection bits
LO0
LO1 LO0
Logic operation function
0 0 Exclusive logic OR operation (XOR)
0 1 OR operation (OR)
1 0 AND operation (AND)
1 1 Not available
Pull-down control register PU0
at reset : 00002
at RAM back-up : state retained
W
Ports G2, G3 pull-down transistor control 0 Pull-down transistor OFF, key-on wakeup invalid
PU03
bit
1 Pull-down transistor ON, key-on wakeup valid
Ports G0, G1 pull-down transistor control 0 Pull-down transistor OFF, key-on wakeup invalid
PU02
bit
1 Pull-down transistor ON, key-on wakeup valid
PU01 Port E1 pull-down transistor control bit
0 Pull-down transistor OFF, key-on wakeup invalid
1 Pull-down transistor ON, key-on wakeup valid
PU00 Port E0 pull-down transistor control bit
0 Pull-down transistor OFF, key-on wakeup invalid
1 Pull-down transistor ON, key-on wakeup valid
Pull-down control register PU1
PU13 Port D7 pull-down transistor control bit
PU12 Port D6 pull-down transistor control bit
PU11 Port D5 pull-down transistor control bit
PU10 Port D4 pull-down transistor control bit
at reset : 00002
at RAM back-up : state retained
W
0 Pull-down transistor OFF, key-on wakeup invalid
1 Pull-down transistor ON, key-on wakeup valid
0 Pull-down transistor OFF, key-on wakeup invalid
1 Pull-down transistor ON, key-on wakeup valid
0 Pull-down transistor OFF, key-on wakeup invalid
1 Pull-down transistor ON, key-on wakeup valid
0 Pull-down transistor OFF, key-on wakeup invalid
1 Pull-down transistor ON, key-on wakeup valid
Rev.1.01 Mar 20, 2006 page 59 of 62
REJ03B0109-0101