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MB90335 Series
[bit3] S/C (Measurement mode (single/continuous) selection)
The measurement mode is selected.
Table 13.2-5 Selection of Measurement Mode of 16-bit Up-count Timer
S/C
Measurement mode selection
Single measurement mode
0
[Initial value]
1
Continuous measurement mode
• Initialized to "0" at reset.
• Reading and writing are allowed.
Note:
Rewriting after the startup is an interdiction. Always perform the write operation before start or after
stop.
[bit2 to bit0] MOD2, MOD1, MOD0 (operation mode/measurement edge selection)
Operation mode and width measurement edge are selected.
Table 13.2-6 Selection of Operating Mode/measurement Edge of 16-bit Up-count Timer
MOD2
0
0
0
0
1
1
1
1
• Initialized to "00
• Reading and writing are allowed.
Note:
Rewriting after the startup is an interdiction. Always perform the write operation before start or after
stop.
CM44-10137-6E
Reload none (single shot)
There is reload (reload timer).
MOD1
MOD0
0
0
Timer mode [Initial value]
0
1
Timer mode (only Reload mode)
Pulse width measurement mode between all edges
1
0
(↑ or ↓ to ↓ or ↑)
1
1
Divided cycle measurement mode (input divisor enabled)
Cycle between rising edges measurement mode (↑ to ↑)
0
0
"H" pulse width measurement mode (↑ to ↓)
0
1
"L" pulse width measurement mode (↓ to ↑)
1
0
Cycle between falling edges measurement mode (↓ to ↓)
1
1
" at reset.
B
FUJITSU MICROELECTRONICS LIMITED
At timer mode
Operation mode/measurement edge selection
CHAPTER 13 PWC TIMER
13.2 Register of PWC Timer
Pulse width
Stop after one measurement
Continuous measurement: buffer
register enabled
297
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