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Chapter 9
16-Bit Timer/Event Counter P
User’s Manual U16580EE3V1UD00
9.5.9 Counter synchronous operation function
Timer P supports a function to start several timers P simultaneously. For this purpose two timer groups
are defined, TMP0 to TMP3, as well as TMP4 to TMP7. For each timer group the counting of one to
three slave counters (TMP1 to TMP3, or TMP5 to TMP7) can be synchronized with the corresponding
master counter (TMP0 or TMP4). The synchronous operation function is enabled for each incorporated
timer by the TPnSYE bit in the TPnCTL1 register (ref. to
(2) TMPn control register 1 (TPnCTL1)
).
When enabling the synchronous operation function, observe the following procedure:
<1> Clear the synchronous mode selection bit TPmSYE of the master counter TMPm to 0.
<2> Disable the count operation of the master counter TMPm (TPmCE = 0).
<3> Enable the synchronous operation for each of the incorporated slave counters TMPs (TPsSYE =
1).
<4> Enable the operation of the master counter TMPm (TPmCE = 1).
Master and incorporated slave counters of that group start and clock synchronously. When the master
counter is cleared, the slave counters are cleared synchronously too.
Cautions: 1. In synchronous operation mode, the master counter can be used only in PWM
mode (TPmMD2 to TPmMD0 = 100B), external trigger pulse output mode
(TPmMD2 to TPmMD0 = 010B), one-shot pulse output mode (TPmMD2 to
TPmMD0 = 011B), and free-running mode (TPmMD2 to TPmMD0 = 101B).
2. In synchronous operation mode, the slave counters can be used in free-running
mode only (TPsMD2 to TPsMD0 = 101B).
Remark:
n = 0 to 7,
m = 0, 4
s = 1 to 3, 5 to 7
Содержание V850E/PH2
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