z86e72 ZiLOG Semiconductor, z86e72 Datasheet - Page 60

• Manufacturer Part Number: z86e72
• Description: Otp Microcontroller
• Manufacturer: ZiLOG Semiconductor

PS008704-0507
T8_OUT
“Counter Enable” Command,
T8_OUT Switches To Its
Initial Value (CTR1 D1)
Note:
Note:
You can modify the values in TC8H or TC8L at any time. The new values take
effect when they are loaded. Do not write these registers at the time the values
are to be loaded into the counter/timer, to ensure known operation. An initial count
of 1 is not allowed (a nonfunction occurs). An initial count of 0 causes TC8 to
count from 0 to FFh to FEh.
Transition from 0 to FFh is not a time-out condition.
“h” is used for hexadecimal values.
Do not use the same instructions for stopping the counter/
timers and setting the status bits. Two successive commands
are necessary. First, stop the counter/timers, and, second,
reset the status bits. This is required because it takes one
counter/timer clock interval for the initiated event to actually
occur.
“Counter Enable” Command,
T8_OUT Switches To Its
Initial Value (CTR1 D1)
Figure 28. T8_OUT in Single-Pass Mode
TC8L
Figure 29. T8_OUT in Modulo-N Mode
T8_OUT Toggles
TC8H
TC8H Counts
Time-Out Interrupt
TC8L
Time-Out Interrupt
T8_OUT Toggles,
TC8H
Time-Out Interrupt
OTP Microcontroller
TC8L
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