Fujitsu FR81S User Manual
CHAPTER 24: 16-BIT FREE-RUN TIMER
4. Registers
FUJITSU SEMICONDUCTOR LIMITED
CHAPTER : 16-BIT FREE-RUN TIMER
FUJITSU SEMICONDUCTOR CONFIDENTIAL
23
Notes:
The value read is a mask counter value.
If a read-modify-write instruction is executed, the value read is a mask register value.
The written data will be written to the mask register.
The written value to the mask register while the free-run timer is active (STOP: bit22 of the timer state control
register (TCCS) is 0) will be reload to the counter only when the mask counter becomes "0".
The written value to the mask register while the free-run timer is inactive (STOP: bit22 of the timer state
control register (TCCS) is 1) will be immediately reloaded to the counter.
[bit7 to bit0] Reserved
Always write 1 to these bits.
MB91520 Series
MN705-00010-1v0-E
930