Renesas M16C User Manual

Rev.1.10    Jul 01, 2005    page 107 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

Timer Ai Mode Register  (i = 0 to 4) 

 

Function

Bit Symbol

b7

b6

b5

b4

b3

b2

b1

b0

Operation Mode 
Select Bit

Pulse Output Function
Select Bit 

(3)

1 1 : Pulse width modulation mode

b1 b0 

TMOD1

TMOD0

MR0

RW

1 1

1

RW

RW

RW

After Reset

00h

Address

0396h to 039Ah

Symbol

TA0MR to TA4MR

MR2

MR1

MR3

b7 b6 

TCK1

TCK0

Count Source Select Bit

16/8-Bit Pulse Width 
Modulation Mode Select Bit

Trigger Select Bit

External Trigger Select
Bit 

(1)

 

           

RW

RW

RW

RW

RW

1 : Selected by TAiTGH to TAiTGL bits

0 : Falling edge of input signal to TAiIN pin 

(2)

1 : Rising edge of input signal to TAiIN pin 

(2)

0 : Pulse is not output
     (TAiOUT pin is a normal port pin)
1 : Pulse is output
     (TAiOUT pin is a pulse output pin)

0 : Functions as a 16-bit pulse width modulator
1 : Functions as an 8-bit pulse width modulator

0 : Write "1" to TAiS bit in the TABSR register

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

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).
3. Set to "1" (pulse is output), PWM pulse is output.