Z8F042AHJ020SG Zilog, Z8F042AHJ020SG Datasheet - Page 78

• 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

Table 32. IRQ1 Enable High Bit Register (IRQ1ENH)
Table 33. IRQ1 Enable Low Bit Register (IRQ1ENL)
PS022517-0508
BITS
FIELD
RESET
R/W
ADDR
BITS
FIELD
RESET
R/W
ADDR
IRQ2 Enable High and Low Bit Registers
7
7
PA7ENH
PA7ENL
Table 31. IRQ1 Enable and Priority Encoding
PAxENH—Port A Bit[x] Interrupt Request Enable High Bit
PAxENL—Port A Bit[x] Interrupt Request Enable Low Bit
Table 34
Registers
Interrupt Request 2 register. Priority is generated by setting bits in each register.
IRQ1ENH[x]
where x indicates the register bits from 0 through 7.
6
6
PA6ENH
PA6ENL
0
0
1
1
describes the priority control for IRQ2. The IRQ2 Enable High and Low Bit
(Table 35
5
5
IRQ1ENL[x]
PA5ENH
PA5ENL
and
Table
0
1
0
1
36) form a priority encoded enabling for interrupts in the
4
4
PA4ENH
PA4ENL
Priority
Disabled
Level 1
Level 2
Level 3
FC4H
FC5H
R/W
R/W
0
0
3
3
PA3ENH
PA3ENL
Description
Disabled
Low
Nominal
High
2
2
Z8 Encore! XP
PA2ENH
PA2ENL
Product Specification
1
1
PA1ENH
PA1ENL
®
Interrupt Controller
F0822 Series
0
0
PA0ENH
PA0ENL
65