Z8F082A28100KIT ZILOG [Zilog, Inc.], Z8F082A28100KIT Datasheet - Page 81
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Z8F082A28100KIT
Manufacturer Part Number
Z8F082A28100KIT
Description
Z8 Encore XP-R F08xA Series with eXtended Peripherals
Manufacturer
ZILOG [Zilog, Inc.]
Datasheet
1.Z8F082A28100KIT.pdf
(244 pages)
- Current page: 81 of 244
- Download datasheet (3Mb)
PS024705-0405
2. Write to the Timer High and Low Byte registers to set the starting count value. This
3. Write to the Timer Reload High and Low Byte registers to set the Reload value.
4. If appropriate, enable the timer interrupt and set the timer interrupt priority by writing
5. If using the Timer Output function, configure the associated GPIO port pin for the
6. Write to the Timer Control register to enable the timer.
In COMPARATOR COUNTER mode, the number of comparator output transitions since
the timer start is given by the following equation:
PWM SINGLE OUTPUT Mode
In PWM SINGLE OUTPUT mode, the timer outputs a Pulse-Width Modulator (PWM)
output signal through a GPIO Port pin. The timer input is the system clock. The timer first
counts up to the 16-bit PWM match value stored in the Timer PWM High and Low Byte
registers. When the timer count value matches the PWM value, the Timer Output toggles.
The timer continues counting until it reaches the Reload value stored in the Timer Reload
High and Low Byte registers. Upon reaching the Reload value, the timer generates an
interrupt, the count value in the Timer High and Low Byte registers is reset to
counting resumes.
If the TPOL bit in the Timer Control register is set to 1, the Timer Output signal begins as
a High (1) and transitions to a Low (0) when the timer value matches the PWM value. The
Timer Output signal returns to a High (1) after the timer reaches the Reload value and is
reset to
If the TPOL bit in the Timer Control register is set to 0, the Timer Output signal begins as
a Low (0) and transitions to a High (1) when the timer value matches the PWM value. The
Timer Output signal returns to a Low (0) after the timer reaches the Reload value and is
reset to
The steps for configuring a timer for PWM Single Output mode and initiating the PWM
operation are as follows:
Comparator Output Transitions
–
action only affects the first pass in COMPARATOR COUNTER mode. After the first
timer Reload in COMPARATOR COUNTER mode, counting always begins at the
reset value of
High and Low Byte registers must be written with the value
to the relevant interrupt registers.
Timer Output alternate function.
0001H
0001H
Select either the rising edge or falling edge of the comparator output signal for the
count. This also sets the initial logic level (High or Low) for the Timer Output
alternate function. However, the Timer Output function is not required to be
enabled.
.
.
0001H
. Generally, in COMPARATOR COUNTER mode the Timer
P R E L I M I N A R Y
=
Current Count Value Start Value
Z8 Encore! XP
Product Specification
0001H
–
.
®
F08xA Series
0001H
Timers
and
63
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