4524 Datasheet, PDF (32/161 Pages) Renesas Technology Corp – SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER

4524 Group
Table 9 Function related timers
Circuit
Structure
Prescaler
Timer 1
8-bit programmable
binary down counter
8-bit programmable
binary down counter
(link to INT0 input)
Timer 2
8-bit programmable
binary down counter
Timer 3
8-bit programmable
binary down counter
(link to INT1 input)
Timer 4
Timer 5
8-bit programmable
binary down counter
(PWM output function)
16-bit fixed dividing
frequency
Timer LC
Watchdog
timer
4-bit programmable
binary down counter
16-bit fixed dividing
frequency
Count source
• Instruction clock (INSTCK)
• Instruction clock (INSTCK)
• Prescaler output (ORCLK)
• Timer 5 underflow
(T5UDF)
• CNTR0 input
• System clock (STCK)
• Prescaler output (ORCLK)
• Timer 1 underflow
(T1UDF)
• PWM output (PWMOUT)
• PWM output (PWMOUT)
• Prescaler output (ORCLK)
• Timer 2 underflow
(T2UDF)
• CNTR1 input
• XIN input
• Prescaler output (ORCLK)
• XCIN input
• Bit 4 of timer 5
• Prescaler output (ORCLK)
• Instruction clock (INSTCK)
Frequency
dividing ratio
1 to 256
1 to 256
1 to 256
1 to 256
1 to 256
8192
16384
32768
65536
1 to 16
65534
Use of output signal
• Timer 1, 2, 3, 4 and LC count sources
• Timer 2 count source
• CNTR0 output
• Timer 1 interrupt
• Timer 3 count source
• CNTR0 output
• Timer 2 interrupt
• CNTR1 output control
• Timer 3 interrupt
• Timer 2, 3 count source
• CNTR1 output
• Timer 4 interrupt
• Timer 1, LC count source
• Timer 5 interrupt
• LCD clock
• System reset (count twice)
• WDF flag decision
Control
register
PA
W1
W2
W2
W3
W4
W5
W6
Rev.2.00 Jul 27, 2004 page 32 of 159
REJ03B0091-0200Z