Fujitsu F2 MC-8FX Family, Hardware Manual

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CHAPTER 16 8/16-BIT COMPOSITE TIMER
Table 16.5-1 Functional Description of Each Bit of 8/16-bit Composite Timer 00/01 Control Status Register
0 (T00CR0/T01CR0) (1 / 2)
Bit name Function
bit7
IFE:
IF flag interrupt enable
• This bit enables or disables IF flag interrupts.
Setting this bit to "0" : disables IF flag interrupts.
Setting this bit to "1" : an IF flag interrupt request is outputted when both the IE bit (T00CR1/
T01CR1:IE) and the IF flag (T00CR1/T01CR1:IF) are set to "1".
bit6
to
bit4
C2, C1, C0:
Count clock select bits
These bits select the count clock.
• The count clock is generated by the prescaler. Refer to 6.12 Operating Explanation of Prescaler.
• Write access to these bits is nullified during timer operation (T00CR1/T01CR1:STA = "1").
• The clock selection of T01CR0 (timer 01) is nullified during 16-bit operation.
• These bits cannot be set to "111
B
" when the PWC or input capture function is used. An attempt to
write "111
B
" with the PWC or input capture function in use resets the bits to "000
B
". The bits are
also reset to "000
B
" if the timer enters the input capture operation mode with the bits set to "111
B
".
C2 C1 C0 Count clock select bits
0 0 0 1 x MCLK (machine clock)
0 0 1 1/2 x MCLK (machine clock)
0 1 0 1/4 x MCLK (machine clock)
0 1 1 1/8 x MCLK (machine clock)
1 0 0 1/16 x MCLK (machine clock)
1 0 1 1/32 x MCLK (machine clock)
1 1 0
1/2
7
x Fch
1 1 1 External clock