Fujitsu FR81S User Manual
CHAPTER 25: 16-BIT OUTPUT COMPARE
4. Registers
FUJITSU SEMICONDUCTOR LIMITED
CHAPTER
: 16-BIT OUTPUT COMPARE
FUJITSU SEMICONDUCTOR CONFIDENTIAL
16
[bit6] IOP0: Compare match interrupt flag bi
IOP0
Function
Read
Write
0
No compare match interrupt occurs for the
output compare register (OCCP0).
This bit is cleared.
1
Compare match interrupt occurs for the output
compare register (OCCP0).
This bit remains unaffected.
⋅
This bit is an interrupt flag that indicates whether the value of the output compare register (OCCP6)
matched that of the 16-bit free-run timer.
⋅
This bit is set to "1" when the compare register value matches the 16-bit free-run timer value.
⋅
An output compare interrupt occurs if this bit is set while the compare match interrupt enable bit
(IOE0:bit4) is enabled ("1").
⋅
When this bit is set to "0": This bit is cleared.
⋅
When this bit is set to "1": This bit remains unaffected.
⋅
For ch.2 and 4, the operation is the same as ch.0.
Notes:
If a read-modify-write instruction is executed, "1" is always read.
If a software clear (write of "0") or a clear due to an interrupt clear signal ("H") and a hardware set occur at
the same time, the hardware set takes precedence.
[bit5] IOE1: Compare match interrupt enable bit
IOE1
Function
0
Compare match interrupt is disabled for the output compare register (OCCP1).
1
Compare match interrupt is enabled for the output compare register (OCCP1).
⋅
This bit is used to enable an output compare interrupt for the output compare register (OCCP1).
⋅
An output compare interrupt occurs if the compare match interrupt flag bit (IOP1: bit7) is set while this bit
is set to "1".
⋅
For ch.3 and 5, the operation is the same as ch.1.
[bit4] IOE0: Compare match interrupt enable bit
IOE0
Function
0
Compare match interrupt is disabled for the output compare register (OCCP0).
1
Compare match interrupt is enabled for the output compare register (OCCP0).
⋅
This bit is used to enable an output compare interrupt for the output compare register (OCCP0).
⋅
An output compare interrupt occurs if the compare match interrupt flag bit (IOP0: bit6) is set while this bit
is set to "1".
⋅
For ch.2 and 4, the operation is the same as ch.0.
MB91520 Series
MN705-00010-1v0-E
971