HD6417641 RENESAS [Renesas Technology Corp], HD6417641 Datasheet - Page 562
HD6417641
Manufacturer Part Number
HD6417641
Description
Manufacturer
RENESAS [Renesas Technology Corp]
Datasheet
1.HD6417641.pdf
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Section 17 Compare Match Timer (CMT)
Note:
17.2.3
CMCNT is a 16-bit register used as an up-counter. When the counter input clock is selected with
bits CKS1 and CKS0 in CMCSR, and the STR bit in CMSTR is set to 1, CMCNT starts counting
using the selected clock.
When the value in CMCNT and the value in compare match constant register (CMCOR) match,
CMCNT is cleared to H'0000 and the CMF flag in CMCSR is set to 1.
CMCNT is initialized to H'0000 by a power on reset, but is not initialized in standby mode.
17.2.4
CMCOR is a 16-bit register that sets the interval up to a compare match with CMCNT.
CMCOR is initialized to H'FFFF by a power on reset, but is not initialized in standby mode.
Rev. 4.00 Sep. 14, 2005 Page 512 of 982
REJ09B0023-0400
Bit
1
0
*
Compare Match Counter (CMCNT )
Compare Match Constant Register (CMCOR)
Bit Name
CKS1
CKS0
Only 0 can be written, to clear the flag.
Initial
value
0
0
R/W
R/W
R/W
Description
Clock Select
These bits select the clock to be input to CMCNT from
four internal clocks obtained by dividing the peripheral
operating clock (Pφ). When the STR bit in CMSTR is
set to 1, CMCNT starts counting on the clock selected
with bits CKS1 and CKS0.
00: Pφ/4
01: Pφ/8
10: Pφ/16
11: Pφ/64
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