Renesas 16-bit single-chip microcomputer Manual De Usuario

Rev.1.02    Jul 01, 2005    page 93 of 314
REJ09B0126-0102

M16C/6N Group (M16C/6NL, M16C/6NN)

12. Timers

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

One-Shot Start Flag

Symbol

Address

ONSF

0382h

Timer A0 One-Shot Start Flag

Timer A1 One-Shot Start Flag

Timer A2 One-Shot Start Flag

Timer A3 One-Shot Start Flag

Timer A4 One-Shot Start Flag

Bit Name

Function

Bit Symbol

b7

b6

b5

b4

b3

b2

b1

b0

0 0 : Input on TA0IN is selected 

(1)

0 1 : TB2 is selected 

(2)

1 0 : TA4 is selected 

(2)

1 1 : TA1 is selected 

(2)

Timer A0 Event/Trigger
Select Bit

b7 b6

RW

The timer starts counting by setting
this bit to "1" while the TMOD1 to
TMOD0 bits in the TAiMR register (i =
0 to 4) = 10b (one-shot timer mode)
and the MR2 bit in the TAiMR register 
 = 0 (TAiOS bit enabled).
When read, its content is "0".

 

 

 

Z-phase Input Enable Bit

0 : Z-phase input disabled
1 : Z-phase input enabled

RW

RW

RW

RW

RW

RW

RW

RW

NOTES:

1. Make sure the PD7_1 bit in the PD7 register is set to "0" (input mode).
2. Over flow or under flow.

TA1OS

TA2OS

TA0OS

TA3OS

TA4OS

TA0TGL

TA0TGH

TAZIE

Symbol

Address

After Reset

TRGSR

0383h

00h

Timer A1 Event/Trigger
Select Bit

 

Trigger Select Register

Bit Name

Function

Bit Symbol

b7

b6

b5

b4

b3

b2

b1

b0

Timer A2 Event/Trigger
Select Bit

 

Timer A3 Event/Trigger
Select Bit

 

Timer A4 Event/Trigger
Select Bit

 

b1 b0

b3 b2

b5 b4

b7 b6

NOTES:

1. Make sure the port direction bits for the TA1IN to TA4IN pins are set to "0" (input mode).
2. Over flow or under flow.

0 0 : Input on TA1IN is selected 

(1)

0 1 : TB2 is selected 

(2)

1 0 : TA0 is selected 

(2)

1 1 : TA2 is selected 

(2)

0 0 : Input on TA2IN is selected 

(1)

0 1 : TB2 is selected 

(2)

1 0 : TA1 is selected 

(2)

1 1 : TA3 is selected 

(2)

0 0 : Input on TA3IN is selected 

(1)

0 1 : TB2 is selected 

(2)

 

1 0 : TA2 is selected 

(2)

1 1 : TA4 is selected 

(2)

0 0 : Input on TA4IN is selected 

(1)

0 1 : TB2 is selected 

(2)

1 0 : TA3 is selected 

(2)

1 1 : TA0 is selected 

(2)

RW

RW

RW

RW

RW

RW

RW

RW

RW

TA1TGL

TA1TGH

TA2TGL

TA2TGH

TA3TGL

TA3TGH

TA4TGL

TA4TGH

After Reset

00h

Symbol
CPSRF

Clock Prescaler Reset Flag

Bit Name

Function

Bit Symbol

b7

b6

b5

b4

b3

b2

b1

b0

RW

RW

(b6-b0)

Setting this bit to "1" initializes the 
prescaler for the timekeeping clock.
(When read, its content is "0".)

Nothing is assigned. When write, set to "0". 
When read, their contents are indeterminate.

CPSR

Clock Prescaler Reset Flag

Address

After Reset

0381h

0XXXXXXXb