M32C83T datasheet(161/527 Pages) RENESAS

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Page 138

14. Timer (Timer A)

)

(

Figure 14.6 UDF Register and ONSF Register

Up/Down Flag(1)

Symbol

Address

After Reset

UDF

034416

0016

TA0UD

Timer A0 Up/Down Flag

TA2P

0 : Decrement

1 : Increment

(Note 2)

TA1UD

Timer A1 Up/Down Flag

0 : Decrement

1 : Increment

(Note 2)

TA2UD

Timer A2 Up/Down Flag

0 : Decrement

1 : Increment

(Note 2)

TA3UD

Timer A3 Up/Down Flag

0 : Decrement

1 : Increment

(Note 2)

TA4UD

Timer A4 Up/Down Flag

0 : Decrement

1 : Increment

(Note 2)

(Note 3)

Bit Name

Function

Bit

Symbol

Timer A2 Two-Phase

Pulse Signal Processing

Function Select Bit

0 : Disables two-phase pulse signal

processing function

1 : Enables two-phase pulse signal

processing function

TA3P

Timer A3 Two-Phase

Pulse Signal Processing

Function Select Bit

0 : Disables two-phase pulse signal

processing function

1 : Enables two-phase pulse signal

processing function

TA4P

Timer A4 Two-Phase

Pulse Signal Processing

Function Select Bit

0 : Disables two-phase pulse signal

processing function

1 : Enables two-phase pulse signal

processing function

NOTES:

1. Use the MOV instruction to set the UDF register.

2. This bit is enabled when the MR2 bit in the TAiMR register (i=0 to 4) is set to "0" (the UDF register

causes increment/decrement switching) in event counter mode.

3. Set this bit to "0" when not using the two-phase pulse signal processing function.

One-Shot Start Flag

Symbol

Address

After Reset

ONSF

034216

0016

TA0OS

Timer A0 One-Shot

Start Flag

TA1OS

Timer A1 One-Shot

Start Flag

TA2OS

Timer A2 One-Shot

Start Flag

TA3OS

Timer A3 One-Shot

Start Flag

TA4OS

Timer A4 One-Shot

Start Flag

0 : In an idle state

1 : Starts the timer

(Note 1)

TAZIE

Z-Phase Input Enable Bit

0 : Disables Z-phase input

1 : Enables Z-phase input

Bit Name

Function

Bit

Symbol

TA0TGL

TA0TGH

Timer A0 Event/Trigger

Select Bit

0 0 : Selects an input to the TA0IN pin

0 1 : Selects the TB2 overflows(2)

1 0 : Selects the TA4 overflows(2)

1 1 : Selects the TA1 overflows(2)

b7 b6

NOTES:

1. When read, the bit is set to "0".

2. Overflow or underflow.

0 : In an idle state

1 : Starts the timer

(Note 1)

0 : In an idle state

1 : Starts the timer

(Note 1)

0 : In an idle state

1 : Starts the timer

(Note 1)

0 : In an idle state

1 : Starts the timer

(Note 1)

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