SH7014 datasheet(153/754 Pages) RENESAS

153 / 754 page

8. Bus State Controller (BSC)

Rev.5.00 Sep. 27, 2007 Page 119 of 716

REJ09B0398-0500

Bit 6

⎯Compare Match Flag (CMF): This status flag, which indicates that the values of RTCNT

and RTCOR match, is set/cleared under the following conditions:

Bit 6

CMF

Description

Clear condition: After RTCSR is read when CMF is 1, 0 is written in

CMF.

(initial value)

Set condition: RTCNT = RTCOR. When both RTCNT and RTCOR are

in an initialized state (when values have not been rewritten since

initialization, and RTCNT has not had its value changed due to a count-

up), RTCNT and RTCOR match, as both are H'0000, but in this case

CMF is not set.

Bit 5

⎯Compare Match Interrupt Enable (CMIE): Enables or disables an interrupt request

caused by the CMF bit of the RTCSR when CMF is set to 1.

Bit 5

CMIE

Description

Disables an interrupt request caused by CMF

(initial value)

Enables an interrupt request caused by CMF

Bits 4 to 2

⎯Clock Select (CKS2 to CKS0): Select the clock to input to RTCNT from among the

seven types of internal clock obtained from dividing the system clock (

φ).

Bit 4

CKS2

Bit 3

CKS1

Bit 2

CKS0

Description

Stops count-up

(initial value)

φ/2

φ/8

φ/32

φ/128

φ/512

φ/2048

φ/4096

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