Fujitsu FR81S User Manual

CHAPTER 20: RELOAD TIMER

6. Application Note

FUJITSU SEMICONDUCTOR LIMITED

CHAPTER : RELOAD TIMER
FUJITSU SEMICONDUCTOR CONFIDENTIAL

[Configuration] To use the timer as PPG, configure as follows.

1. When TIN input is not used

TMCSR

TMRLRA TMRLRB

MOD

[1:0]

TRGM

[1:0]

CSL

[2:0]

GATE EF OUTL RELD INTE

UF CNTE TRG

(A)

(B)

(A):

The count initial value at an activation trigger/The reload value at an underflow caused by the count from the

TMRLRB value (when RELD=1)

(B):

The reload value at an underflow caused by the count from the TMRLRA value

S :Use at timer activation

-:Does not influence operation

* 1:Count clock division setting

CSL[2:0]= 000------Division of peripheral clock (PCLK) by 2

CSL[2:0]= 010------Division of peripheral clock (PCLK) by 8

CSL[2:0]= 011------Division of peripheral clock (PCLK) by 16

CSL[2:0]= 100------Division of peripheral clock (PCLK) by 32

CSL[2:0]= 101------Division of peripheral clock (PCLK) by 64

* 2:TOUT output polarity setting

OUTL= 0------

Initial value L => Count L from TMRLRA => H when an underflow occurs =>

Count H from TMRLRB => L when an underflow occurs

OUTL= 1------

Initial value H => Count H from TMRLRA => L when an underflow occurs =>

Count L from TMRLRB => H when an underflow occurs

*3:Reload setting when an underflow occurs

RELD= 0------One-shot mode

RELD= 1------Reload mode

*4:Interrupt request enable setting

INTE= 0------Interrupt disabled

INTE= 1------Interrupt enabled

2. When using TIN input as a gate input

TMCSR

TMRLRA TMRLRB

MOD

[1:0]

TRGM

[1:0]

CSL

[2:0]

GATE EF OUTL RELD INTE

UF CNTE TRG

(A)

(B)

(A): The count initial value at an activation trigger/The reload value at an underflow caused by the count
from the TMRLRB value (when RELD=1)
(B): The reload value at an underflow caused by the count from the TMRLRA value
S :Use at timer activation
-:Does not influence operation

MB91520 Series

MN705-00010-1v0-E

788