Z8F64220100ZDA Zilog, Z8F64220100ZDA Datasheet - Page 99

• Manufacturer Part Number: Z8F64220100ZDA
• Description: ADAPTER ICE Z8 ENCORE 64K 64LQFP
• Manufacturer: Zilog

Specifications of Z8F64220100ZDA

• Module/board Type: *
• For Use With/related Products: Z8 Encore!™
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: 269-3403

PS019921-0308
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 desired, enable the timer interrupt and set the timer interrupt priority by writing to
5. Configure the associated GPIO port pin for the Timer Input alternate function.
6. Write to the Timer Control 1 register to enable the timer.
7. Assert the Timer Input signal to initiate the counting.
CAPTURE/COMPARE Mode
In CAPTURE/COMPARE mode, the timer begins counting on the first external Timer
Input transition. The desired transition (rising edge or falling edge) is set by the TPOL bit
in the Timer Control 1 Register. The timer input is the system clock.
Every subsequent desired transition (after the first) of the Timer Input signal captures the
current count value. The Capture value is written to the Timer PWM High and Low Byte
Registers. When the Capture event occurs, an interrupt is generated, the count value in the
Timer High and Low Byte registers is reset to
If no Capture event occurs, the timer counts up to the 16-bit Compare value stored in the
Timer Reload High and Low Byte registers. Upon reaching the Compare value, the timer
generates an interrupt, the count value in the Timer High and Low Byte registers is reset to
0001H and counting resumes.
Follow the steps below for configuring a timer for CAPTURE/COMPARE mode and initi-
ating the count:
1. Write to the Timer Control 1 register to:
2. Write to the Timer High and Low Byte registers to set the starting count value
3. Write to the Timer Reload High and Low Byte registers to set the Compare value.
4. If desired, enable the timer interrupt and set the timer interrupt priority by writing to
5. Configure the associated GPIO port pin for the Timer Input alternate function.
–
only affects the first pass in GATED mode. After the first timer reset in GATED mode,
counting always begins at the reset value of
the relevant interrupt registers.
–
–
–
–
(typically
the relevant interrupt registers.
Set the prescale value
Disable the timer
Configure the timer for CAPTURE/COMPARE mode
Set the prescale value
Set the Capture edge (rising or falling) for the Timer Input
0001H
).
0001H
0001H
, and counting resumes.
Z8 Encore! XP
.
Product Specification
®
F64XX Series
Timers
85