32170 Datasheet, PDF (491/881 Pages) Mitsubishi Electric Semiconductor – SINGLE-CHIP 32-BIT CMOS MICROCOMPUTER

10
MULTIJUNCTION TIMERS
10.8 TOD (Output-related 16-bit Timer)
Enabled
(by writing to enable bit ^Underflow
or by external input) ^{(first time)}
Count clock
Underflow
(second time)
H’FFFF
Counter
H’A000
H’E000
Down-count
starting from
counter
set value
H’DFFF
Down-count
starting from
reload 0 register
set value
H’DFFF
Down-count
starting from
reload 0 register
set value
H’0000
Reload 0 register H’E000
Reload 1 register (Not used)
F/F output
Data inverted
by enable
Data inverted
by underflow
Data inverted
by underflow
Note: This diagram does not show detail timing information.
Figure 10.8.13 Typical Operation in TOD Continuous Output Mode (without Correction
Function)
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32170/32174 Group User's Manual (Rev. 2.1)