SH7014 datasheet(252/754 Pages) RENESAS

252 / 754 page

10. Multifunction Timer Pulse Unit (MTU)

Rev.5.00 Sep. 27, 2007 Page 218 of 716

REJ09B0398-0500

Bit 5

⎯Underflow Flag (TCFU): This status flag indicates the occurrence of a channel 1, 2

TCNT counter underflow.

This bit is reserved in channel 0. This bit always reads as 0. The write value should always be 0.

Bit 5

TCFU

Description

Clear condition: With TCFU = 1, a 0 write to TCFU after reading it

(initial value)

Set condition: When the TCNT value underflows (H'0000

→ H'FFFF)

Bit 4

⎯Overflow Flag (TCFV): This status flag indicates the occurrence of a TCNT counter

overflow.

Bit 4

TCFV

Description

Clear condition: With TCFV = 1, a 0 write to TCFV after reading it

(initial value)

Set condition: When the TCNT value overflows (H'FFFF

→ H'0000)

Bit 3

⎯Input Capture/Output Compare Flag D (TGFD): This status flag indicates the

occurrence of a channel 0 TGRD register input capture or compare-match.

This bit is reserved in channels 1 and 2. It always reads as 0. The write value should always be 0.

Bit 3

TGFD

Description

Clear condition: With TGFD = 1, a 0 write to TGFD following a read

(initial value)

Set conditions:

• When TGRD is functioning as an output compare register

(TCNT = TGRD)

• When TGRD is functioning as input capture (the TCNT value is sent

to TGRD by the input capture signal)

SH7014 Datasheet(PDF) 252 Page - Renesas Technology Corp