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8-bit Timers
10-29
Differences between using a timer as a prescaler and when cascaded
The following explanation of these differences uses the cases where the clock source for timer 1 is set to "timer 0
underflow" and to "cascaded with timer 0" as examples.
When "timer 0 underflow" is set, operation is as shown in Fig. 10-6-6. (IOCLK is selected as the clock source for
timer 0.)
When TM0BC underflows, the value that is set in TM0BR is loaded into TM0BC, and the value in TM1BC is
decremented by one.
When TM1BC underflows, the value that is set in TM1BR is loaded into TM1BC.
TM0BC value
Interrupt request
signal (TM1IRQ)
TM1BC value
x'00
x'01
TM0BR value TM0BR value-1
IOCLK
x'00
x'01
TM0BR value TM0BR value-1
x'00
x'01
TM0BR value
Interrupt request
signal (TM0IRQ)
x'00
x'01
TM1BR value
Fig. 10-6-6
Operation of Timers 0 and 1 (1)
Summary of Contents for MN103001G/F01K
Page 1: ...MICROCOMPUTER MN1030 MN103001G F01K LSI User s Manual Pub No 23101 050E ...
Page 2: ......
Page 4: ......
Page 6: ......
Page 8: ......
Page 9: ...Table of Contents List of Figures and Tables 0 ...
Page 26: ...xviii ...
Page 27: ...1 0 1 General Specifications ...
Page 35: ...2 CPU 2 ...
Page 57: ...3 Extension Instruction Specifications 3 ...
Page 96: ...Extension Instruction Specifications 3 40 ...
Page 97: ...4 Memory Modes 3 4 ...
Page 102: ...Memory Modes 4 6 ...
Page 103: ...5 Operating Mode 5 ...
Page 107: ...6 Clock Generator 6 13 ...
Page 111: ...7 Internal Memory 7 ...
Page 114: ...Internal Memory 7 4 ...
Page 115: ...8 Bus Controller BC 8 ...
Page 189: ...9 Interrupt Controller 9 ...
Page 220: ...Interrupt Controller 9 32 ...
Page 221: ...10 8 bit Timers 9 10 ...
Page 254: ...8 bit Timers 10 34 ...
Page 255: ...11 16 bit Timers 11 ...
Page 292: ...16 bit Timers 11 38 ...
Page 293: ...12 Watchdog Timer 11 12 ...
Page 302: ...Watchdog Timer 12 10 ...
Page 303: ...13 Serial Interface 13 ...
Page 354: ...Serial Interface 13 52 ...
Page 355: ...14 A D Converter 14 ...
Page 367: ...15 I O Ports 15 ...
Page 431: ...16 Internal Flash Memory 16 ...
Page 439: ...17 17 Ordering Mask ROM ...
Page 442: ...Ordering Mask ROM 17 4 ...
Page 443: ...Appendix ...