Z8F042AHH020SC Zilog, Z8F042AHH020SC Datasheet - Page 85
![IC ENCORE XP MCU FLASH 4K 20SSOP](/photos/9/30/93032/269-20-ssop_sml.jpg)
Z8F042AHH020SC
Manufacturer Part Number
Z8F042AHH020SC
Description
IC ENCORE XP MCU FLASH 4K 20SSOP
Manufacturer
Zilog
Series
Encore!® XP®r
Specifications of Z8F042AHH020SC
Core Processor
Z8
Core Size
8-Bit
Speed
20MHz
Connectivity
IrDA, UART/USART
Peripherals
Brown-out Detect/Reset, LED, LVD, POR, PWM, Temp Sensor, WDT
Number Of I /o
17
Program Memory Size
4KB (4K x 8)
Program Memory Type
FLASH
Eeprom Size
128 x 8
Ram Size
1K x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 3.6 V
Data Converters
A/D 7x10b
Oscillator Type
Internal
Operating Temperature
0°C ~ 70°C
Package / Case
20-SSOP
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Other names
269-3369
- Current page: 85 of 282
- Download datasheet (4Mb)
PS022825-0908
Follow the steps below for configuring a timer for COMPARATOR COUNTER mode and
initiating the count:
1. Write to the Timer Control register to:
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
–
–
–
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.
Comparator Output Transitions
0001H
Disable the timer.
Configure the timer for COMPARATOR COUNTER mode.
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
=
Current Count Value
Z8 Encore! XP
–
Start Value
Product Specification
0001H
.
®
F082A Series
0001H
Timers
and
74
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