R0K572115S000BE Renesas Electronics America, R0K572115S000BE Datasheet - Page 669

• Manufacturer Part Number: R0K572115S000BE
• Description: KIT STARTER FOR SH7211
• Manufacturer: Renesas Electronics America
• Series: Renesas Starter Kits (RSK)r
• Type: Microcontrollerr

Specifications of R0K572115S000BE

• Contents: CPU Board, LCD Display Module, E8 Emulator, Cable, QuickStart Guide and CD-ROM
• For Use With/related Products: SH7211
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

13.3
13.3.1
When an internal clock is selected with the CKS[1:0] bits in CMCSR and the STR bit in CMSTR
is set to 1, CMCNT starts incrementing using the selected clock. When the values in CMCNT and
CMCOR match, CMCNT is cleared to H'0000 and the CMF flag in CMCSR is set to 1. When the
CMIE bit in CMCSR is set to 1 at this time, a compare match interrupt (CMI) is requested.
CMCNT then starts counting up again from H'0000.
Figure 13.2 shows the operation of the compare match counter.
13.3.2
One of four clocks (Pφ/8, Pφ/32, Pφ/128, and Pφ/512) obtained by dividing the peripheral clock
(Pφ) can be selected with the CKS[1:0] bits in CMCSR. Figure 13.3 shows the timing.
Peripheral clock
Internal clock
Count clock
CMCNT
Operation
Interval Count Operation
CMCNT Count Timing
(Pφ)
CMCOR
H'0000
CMCNT value
Clock
N
Figure 13.2 Counter Operation
Figure 13.3 Count Timing
N
Counter cleared by compare
match with CMCOR
Rev. 3.00 Mar. 04, 2009 Page 643 of 1168
Clock
N + 1
Time
REJ09B0344-0300
N + 1