Z8F6401VN020SC00TR Zilog, Z8F6401VN020SC00TR Datasheet - Page 71

• Manufacturer Part Number: Z8F6401VN020SC00TR
• Description: IC ENCORE MCU FLASH 64K 44PLCC
• Manufacturer: Zilog
• Series: Encore!®r

Specifications of Z8F6401VN020SC00TR

• Core Processor: Z8
• Core Size: 8-Bit
• Speed: 20MHz
• Connectivity: I²C, IrDA, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, DMA, POR, PWM, WDT
• Number Of I /o: 31
• Program Memory Size: 64KB (64K x 8)
• Program Memory Type: FLASH
• Ram Size: 4K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 3.6 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 44-LCC (J-Lead)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Other names: Z8F6401VN020SC00T

Table 30. IRQ1 Enable High Bit Register (IRQ1ENH)
Table 31. IRQ1 Enable Low Bit Register (IRQ1ENL)
PS017610-0404
RESET
RESET
FIELD
FIELD
ADDR
ADDR
BITS
BITS
R/W
R/W
IRQ2 Enable High and Low Bit Registers
PAD7ENH PAD6ENH PAD5ENH PAD4ENH PAD3ENH PAD2ENH PAD1ENH PAD0ENH
PAD7ENL PAD6ENL PAD5ENL PAD4ENL PAD3ENL PAD2ENL PAD1ENL PAD0ENL
R/W
R/W
7
0
7
0
PADxENH—Port A or Port D Bit[x] Interrupt Request Enable High Bit
Refer to the Interrupt Port Select register for selection of either Port A or Port D as the
interrupt source.
PADxENL—Port A or Port D Bit[x] Interrupt Request Enable Low Bit
Refer to the Interrupt Port Select register for selection of either Port A or Port D as the
interrupt source.
The IRQ2 Enable High and Low Bit registers (Tables 33 and 34) form a priority encoded
enabling for interrupts in the Interrupt Request 2 register. Priority is generated by setting
bits in each register. Table 32 describes the priority control for IRQ2.
Table 32. IRQ2 Enable and Priority Encoding
where x indicates the register bits from 0 through 7.
IRQ2ENH[x] IRQ2ENL[x] Priority
0
0
1
1
R/W
R/W
6
0
6
0
0
1
0
1
R/W
R/W
5
0
5
0
Disabled
Level 1
Level 2
Level 3
R/W
R/W
4
4
0
0
Z8F640x/Z8F480x/Z8F320x/Z8F240x/Z8F160x
FC4H
FC5H
R/W
R/W
Description
Disabled
Low
Nominal
High
3
0
3
0
R/W
R/W
2
2
0
0
R/W
R/W
Interrupt Controller
1
0
1
0
Z8 Encore!
R/W
R/W
0
0
0
0
®
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