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HARDWARE
4513/4514 Group User’s Manual
FUNCTION BLOCK OPERATIONS
Table 10 Timer control registers
0
1
0
1
0
1
0
1
W21
0
0
1
1
Stop (state initialized)
Operating
Instruction clock divided by 4
Instruction clock divided by 16
Stop (state retained)
Operating
Count start synchronous circuit not selected
Count start synchronous circuit selected
Prescaler control bit
Prescaler dividing ratio selection bit
Timer 1 control bit
Timer 1 count start synchronous circuit
control bit
Stop (state retained)
Operating
This bit has no function, but read/write is enabled.
Count source
Timer 1 underflow signal
Prescaler output
CNTR0 input
16 bit timer (WDT) underflow signal
Timer 2 control bit
Not used
Timer 2 count source selection bits
0
1
0
1
W20
0
1
0
1
W13
W12
W11
W10
W23
W22
W21
W20
W33
W32
W31
W30
W43
W42
W41
W40
W63
W62
W61
W60
Timer control register W1 R/Wat RAM back-up : 00002at reset : 00002 R/Wat RAM back-up : 00002at reset : 00002
Timer control register W2 R/Wat RAM back-up : state retainedat reset : 00002
W31
0
0
1
1
Stop (state retained)
Operating
Count start synchronous circuit not selected
Count start synchronous circuit selected
Count source
Timer 2 underflow signal
Prescaler output
Not available
Not available
Timer 3 control bit
Timer 3 count start synchronous circuit
control bit
Timer 3 count source selection bits
0
1
0
1
W30
0
1
0
1
Timer control register W3 R/Wat RAM back-up : state retainedat reset : 00002
W41
0
0
1
1
Stop (state retained)
Operating
This bit has no function, but read/write is enabled.
Count source
Timer 3 underflow signal
Prescaler output
CNTR1 input
Not available
Timer 4 control bit
Not used
Timer 4 count source selection bits
0
1
0
1
W40
0
1
0
1
Timer control register W4 R/Wat RAM back-up : state retainedat reset : 00002
Timer 3 underflow signal output divided by 2
CNTR1 output control by timer 4 underflow signal divided by 2
D7(I/O)/CNTR1 input
CNTR1 (I/O)/D7(input)
Timer 1 underflow signal output divided by 2
CNTR0 output control by timer 2 underflow signal divided by 2
D6(I/O)/CNTR0 input
CNTR0 (I/O)/D6(input)
CNTR1 output control bit
D7/CNTR1 function selection bit
CNTR0 output control bit
D6/CNTR0 output control bit
0
1
0
1
0
1
0
1
Timer control register W6 R/Wat RAM back-up : state retainedat reset : 00002
Note: “R” represents read enabled, and “W” represents write enabled.