HD64F7050 RENESAS [Renesas Technology Corp], HD64F7050 Datasheet - Page 484
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HD64F7050
Manufacturer Part Number
HD64F7050
Description
32-Bit RISC Microcomputer SuperH RISC engine Family/
Manufacturer
RENESAS [Renesas Technology Corp]
Datasheet
1.HD64F7050.pdf
(841 pages)
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Section 15 Compare Match Timer (CMT)
Bits 1, 0—Clock Select 1, 0 (CKS1, CKS0): These bits select the clock input to the CMCNT
from among the four internal clocks obtained by dividing the system clock ( ). When the STR bit
of the CMSTR is set to 1, the CMCNT begins incrementing with the clock selected by CKS1 and
CKS0.
Bit 1: CKS1
0
1
15.2.3
The compare match timer counter (CMCNT) is a 16-bit register used as an upcounter for
generating interrupt requests.
When an internal clock is selected with the CKS1, CKS0 bits of the CMCSR register and the STR
bit of the CMSTR is set to 1, the CMCNT begins incrementing with that clock. When the CMCNT
value matches that of the compare match timer constant register (CMCOR), the CMCNT is
cleared to H'0000 and the CMF flag of the CMCSR is set to 1. If the CMIE bit of the CMCSR is
set to 1 at this time, a compare match interrupt (CMI) is requested.
The CMCNT is initialized to H'0000 by a power-on reset and in hardware standby mode and
software standby mode.
Rev. 5.00 Jan 06, 2006 page 464 of 818
REJ09B0273-0500
Initial value:
Initial value:
Compare Match Timer Counter (CMCNT)
R/W:
R/W:
Bit:
Bit:
Bit 0: CKS0
0
1
0
1
R/W
R/W
15
0
7
0
R/W
R/W
14
0
6
0
Description
/8 (initial status)
/32
/128
/512
R/W
R/W
13
0
5
0
R/W
R/W
12
0
4
0
R/W
R/W
11
0
3
0
R/W
R/W
10
0
2
0
R/W
R/W
9
0
1
0
R/W
R/W
8
0
0
0
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