Z8F042AHJ020SG Zilog, Z8F042AHJ020SG Datasheet - Page 48

• Manufacturer Part Number: Z8F042AHJ020SG
• Description: IC ENCORE XP MCU FLASH 4K 28SSOP
• Manufacturer: Zilog
• Series: Encore!® XP®r

Specifications of Z8F042AHJ020SG

• 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: Lead free / RoHS Compliant
• Other names: 269-4159; Z8F042AHJ020SG

Watchdog Timer Control
WDTCTL (FF0H - Read Only)
D7 D6 D5 D4 D3 D2 D1 D0
Watchdog Timer Reload Upper Byte
WDTU (FF1H - Read/Write)
D7 D6 D5 D4 D3 D2 D1 D0
Watchdog Timer Reload Middle Byte
WDTH (FF2H - Read/Write)
D7 D6 D5 D4 D3 D2 D1 D0
Watchdog Timer Reload Low Byte
WDTL (FF3H - Read/Write)
D7 D6 D5 D4 D3 D2 D1 D0
PS022517-0508
SM configuration indicator
Reserved
EXT
RESET pin
RESET pin
WDT
occurred
STOP
POR
WDT reload value [23:16]
WDT reload value [15:8]
WDT reload value [7:0]
0 = Reset not generated by
1 = Reset generated by
0 = WDT timeout has not
1 = WDT timeout occurred
0 = SMR has not occurred
1 = SMR has occurred
0 = POR has not occurred
1 = POR has occurred
Z8 Encore! XP
Product Specification
Control Register Summary
®
F0822 Series
35