Z8F042AHH020EC Zilog, Z8F042AHH020EC Datasheet - Page 201
Z8F042AHH020EC
Manufacturer Part Number
Z8F042AHH020EC
Description
IC ENCORE XP MCU FLASH 4K 20SSOP
Manufacturer
Zilog
Series
Encore!® XP®r
Specifications of Z8F042AHH020EC
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
-40°C ~ 105°C
Package / Case
20-SSOP
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Other names
269-3368
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
Z8F042AHH020EC2103
Manufacturer:
AVX
Quantity:
25 000
Part Number:
Z8F042AHH020EC2103
Manufacturer:
ZILOG
Quantity:
20 000
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Table 109. Oscillator Control Register (OSCCTL)
Oscillator Control Register Definitions
BITS
FIELD
RESET
R/W
ADDR
PS022825-0908
Caution:
Oscillator Control Register
INTEN
R/W
1
7
The Oscillator Control Register (OSCCTL) enables/disables the various oscillator circuits,
enables/disables the failure detection/recovery circuitry and selects the primary oscillator,
which becomes the system clock.
The Oscillator Control Register must be unlocked before writing. Writing the two step
sequence
is locked at successful completion of a register write to the OSCCTL.
INTEN—Internal Precision Oscillator Enable
1 = Internal precision oscillator is enabled
0 = Internal precision oscillator is disabled
XTLEN—Crystal Oscillator Enable; this setting overrides the GPIO register control for
PA0 and PA1
1 = Crystal oscillator is enabled
0 = Crystal oscillator is disabled
WDTEN—Watchdog Timer Oscillator Enable
1 = Watchdog Timer oscillator is enabled
0 = Watchdog Timer oscillator is disabled
SOFEN—System Clock Oscillator Failure Detection Enable
1 = Failure detection and recovery of system clock oscillator is enabled
0 = Failure detection and recovery of system clock oscillator is disabled
It is possible to disable the clock failure detection circuitry as well as all functioning
clock sources. In this case, the Z8 Encore! XP F082A Series device ceases
functioning and can only be recovered by Power-On-Reset.
XTLEN
E7H
R/W
6
0
followed by
WDTEN
R/W
5
1
18H
to the Oscillator Control Register unlocks it. The register
SOFEN
R/W
0
4
F86H
WDFEN
R/W
3
0
Z8 Encore! XP
R/W
0
2
Product Specification
SCKSEL
R/W
1
0
®
F082A Series
Oscillator Control
R/W
0
0
190
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