Renesas M16C User Manual

Rev.1.10    Jul 01, 2005    page 105 of 318
REJ09B0124-0110

M16C/6N Group (M16C/6NK, M16C/6NM)

12. Timers

This document is under development and its contents are subject to change.

Bit Name

Symbol

TA0MR to TA4MR

Function 

Bit Symbol

b7

b6

b5

b4

b3

b2

b1

b0

Operation Mode Select Bit 1 0 : One-shot timer mode

b1 b0 

TMOD1

TMOD0

MR0

Pulse Output Function 
Select Bit

0 : Pulse is not output
    (TA

iOUT

 pin functions as I/O port)

1 : Pulse is output         
    (TAi

OUT

 pin functions as a pulse output pin)

MR2

MR1

MR3

Set to "0" in one-shot timer mode

0 0 : f1 or f2
0 1 : f8
1 0 : f32
1 1 : fC32

b7 b6 

TCK1

TCK0

Count Source Select Bit

1 0

0

0 : TAiOS bit is enabled
1 : Selected by TAiTGH to TAiTGL bits

Trigger Select Bit

External Trigger Select 
Bit 

(1)

0 : Falling edge of input signal to TAiIN pin 

(2)

1 : Rising edge of input signal to TAiIN pin 

(2)

NOTES:

1. Effective when the TAiTGH and TAiTGL bits in the ONSF or TRGSR register are "00b" (TAiIN pin input).
2. The port direction bit for the TAiIN pin is set to "0" (input mode).

RW

RW

RW

RW

RW

RW

RW

RW

RW

Timer Ai Mode Register (i = 0 to 4)

After Reset

00h

Address

0396h to 039Ah