Renesas M16C Manual De Usuario

Rev.1.10    Jul 01, 2005    page 110 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.

Timer Bi Mode Register (i = 0 to 5)

Bit Name

Function

Bit Symbol

RW

b7

b6

b5

b4

b3

b2

b1

b0

0 0 : Timer mode
0 1 : Event counter mode
1 0 : Pulse period measurement mode,

pulse width measurement mode

1 1 : Do not set a value

b1 b0 

TCK1

MR3

MR2

MR1

TMOD1

MR0

TMOD0

TCK0

RW

RW

RW
RW

RW 

(1)

- 

(2)

RW

RW

RO

Function varies with each operation 
mode

Function varies with each operation mode

Operation Mode Select Bit

Count Source Select Bit

Symbol

Address

After Reset

TB0MR to TB2MR

039Bh to 039Dh

00XX0000b

TB3MR to TB5MR

01DBh to 01DDh

00XX0000b

NOTES:

1. Timer B0, timer B3.
2. Timer B1, timer B2, timer B4, timer B5.

Symbol

Address

After Reset

TB0
TB1
TB2
TB3
TB4
TB5

0391h, 0390h
0393h, 0392h
0395h, 0394h
01D1h, 01D0h
01D3h, 01D2h
01D5h, 01D4h

Indeterminate
Indeterminate
Indeterminate
Indeterminate
Indeterminate
Indeterminate

b7

b0 b7

b0

(b15)

(b8)

Timer Bi Register (i = 0 to 5) 

(1)

RW

Measures a pulse period or width

Function

NOTES:

1. The register must be accessed in 16-bit unit.
2. The timer counts pulses from an external device or overflows or underflows of other timers.

Divide the count source by n + 1 
where n = set value

Timer Mode

Event Counter 
Mode

0000h to FFFFh

0000h to FFFFh

Divide the count source by n + 1 
where n = set value 

(2)

Pulse Period
Modulation Mode,

Pulse Width 
Modulation Mode

Mode

Setting Range

RW

RW

RO