Z8F64220100ZDA Zilog, Z8F64220100ZDA Datasheet - Page 94
![ADAPTER ICE Z8 ENCORE 64K 64LQFP](/photos/9/2/90272/z8f64220100zda_sml.jpg)
Z8F64220100ZDA
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
- Current page: 94 of 297
- Download datasheet (9Mb)
PS019921-0308
Caution:
CONTINUOUS Mode Time-Out Period (s)
2. Write to the Timer High and Low Byte registers to set the starting count value (usually
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. If using the Timer Output function, configure the associated GPIO port pin for the
6. Write to the Timer Control 1 register to enable the timer and initiate counting.
In CONTINUOUS mode, the system clock always provides the timer input. The timer
period is given by the following equation:
If an initial starting value other than
registers, the ONE-SHOT mode equation must be used to determine the first time-out
period.
COUNTER Mode
In COUNTER mode, the timer counts input transitions from a GPIO port pin. The timer
input is taken from the GPIO Port pin Timer Input alternate function. The TPOL bit in the
Timer Control 1 Register selects whether the count occurs on the rising edge or the falling
edge of the Timer Input signal. In COUNTER mode, the prescaler is disabled.
Upon reaching the Reload value stored in the Timer Reload High and Low Byte registers,
the timer generates an interrupt, the count value in the Timer High and Low Byte registers
is reset to
enabled, the Timer Output pin changes state (from Low to High or from High to Low) at
timer Reload.
Follow the steps below for configuring a timer for COUNTER mode and initiating the
count:
1. Write to the Timer Control 1 register to:
0001H), affecting only the first pass in CONTINUOUS mode. After the first timer
Reload in CONTINUOUS mode, counting always begins at the reset value of
the relevant interrupt registers.
Timer Output alternate function.
–
–
The input frequency of the Timer Input signal must not exceed one-fourth the
system clock frequency.
Disable the timer
Configure the timer for COUNTER mode
0001H
and counting resumes. Also, if the Timer Output alternate function is
0001H
=
------------------------------------------------------------------------
System Clock Frequency (Hz)
is loaded into the Timer High and Low Byte
Reload Value
Z8 Encore! XP
×
Prescale
Product Specification
®
F64XX Series
0001H
Timers
.
80
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