Z8F042AHJ020SC00TR Zilog, Z8F042AHJ020SC00TR Datasheet - Page 164

• Manufacturer Part Number: Z8F042AHJ020SC00TR
• Description: IC ENCORE XP MCU FLASH 4K 28SSOP
• Manufacturer: Zilog
• Series: Encore!® XP®r

Specifications of Z8F042AHJ020SC00TR

• 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: 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 8x10b
• Oscillator Type: Internal
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 28-SSOP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: Z8F042AHJ020SC00T

Flash Option Bits
Operation
PS022825-0908
Option Bit Configuration By Reset
Programmable Flash option bits allow user configuration of certain aspects of
Z8 Encore! XP
Flash program memory and loaded into holding registers during Reset. The features avail-
able for control through the Flash Option Bits include:
Each time the Flash Option Bits are programmed or erased, the device must be Reset for
the change to take effect. During any reset operation (System Reset, Power-On Reset, or
Stop Mode Recovery), the Flash Option Bits are automatically read from the Flash
Program Memory and written to Option Configuration registers. The Option
Configuration registers control operation of the devices within the Z8 Encore! XP F082A
Series. Option Bit control is established before the device exits Reset and the eZ8 CPU
begins code execution. The Option Configuration registers are not part of the Register File
and are not accessible for read or write access.
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Watchdog Timer time-out response selection–interrupt or system reset
Watchdog Timer always on (enabled at Reset)
The ability to prevent unwanted read access to user code in Program Memory
The ability to prevent accidental programming and erasure of all or a portion of the
user code in Program Memory
Voltage Brownout configuration-always enabled or disabled during STOP mode to
reduce STOP mode power consumption
Oscillator mode selection-for high, medium, and low power crystal oscillators, or
external RC oscillator
Factory trimming information for the internal precision oscillator and low voltage
detection
Factory calibration values for ADC, temperature sensor, and Watchdog Timer
compensation
Factory serialization and randomized lot identifier (optional)
®
F082A Series operation. The feature configuration data is stored in the
Z8 Encore! XP
Product Specification
®
F082A Series
Flash Option Bits
153