Z8F022ASJ020SC Zilog, Z8F022ASJ020SC Datasheet - Page 84
![IC ENCORE XP MCU FLASH 2K 28SOIC](/photos/6/91/69136/269-28-soic_sml.jpg)
Z8F022ASJ020SC
Manufacturer Part Number
Z8F022ASJ020SC
Description
IC ENCORE XP MCU FLASH 2K 28SOIC
Manufacturer
Zilog
Series
Encore!® XP®r
Specifications of Z8F022ASJ020SC
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
23
Program Memory Size
2KB (2K x 8)
Program Memory Type
FLASH
Eeprom Size
64 x 8
Ram Size
512 x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 3.6 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
0°C ~ 70°C
Package / Case
28-SOIC (7.5mm Width)
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Other names
269-3355
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
Z8F022ASJ020SC
Manufacturer:
Zilog
Quantity:
372
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- Download datasheet (4Mb)
PS022825-0908
Caution:
Follow the steps below for configuring a timer for 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. Configure the associated GPIO port pin for the Timer Input alternate function.
6. If using the Timer Output function, configure the associated GPIO port pin for the
7. Write to the Timer Control register to enable the timer.
In COUNTER mode, the number of Timer Input transitions since the timer start is given
by the following equation:
COMPARATOR COUNTER Mode
In COMPARATOR COUNTER mode, the timer counts input transitions from the analog
comparator output. The TPOL bit in the Timer Control Register selects whether the count
occurs on the rising edge or the falling edge of the comparator output signal. In COMPAR-
ATOR COUNTER mode, the prescaler is disabled.
After 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.
The frequency of the comparator output signal must not exceed one-fourth the system
clock frequency. Further, the high or low state of the comparator output signal pulse
must be no less than twice the system clock period. A shorter pulse may not be captured.
–
–
–
only affects the first pass in COUNTER mode. After the first timer Reload in
COUNTER mode, counting always begins at the reset value of
mode the Timer High and Low Byte registers must be written with the value
to the relevant interrupt registers.
Timer Output alternate function.
COUNTER Mode Timer Input Transitions
Disable the timer.
Configure the timer for COUNTER mode.
Select either the rising edge or falling edge of the Timer Input signal for the count.
This selection 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
and counting resumes. Also, if the Timer Output alternate function is
=
Current Count Value
Z8 Encore! XP
Product Specification
0001H
-
Start Value
®
. In COUNTER
F082A Series
0001H
Timers
.
73
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