z8f1601 ZiLOG Semiconductor, z8f1601 Datasheet - Page 70

• Manufacturer Part Number: z8f1601
• Description: Z8 Encore!? Microcontroller With Flash Memory And 10-bit A/d Converter
• Manufacturer: ZiLOG Semiconductor

Table 28. IRQ0 Enable Low Bit Register (IRQ0ENL)
PS017609-0803
RESET
FIELD
ADDR
BITS
R/W
IRQ1 Enable High and Low Bit Registers
T2ENL
R/W
7
0
T2ENL—Timer 2 Interrupt Request Enable Low Bit
T1ENL—Timer 1 Interrupt Request Enable Low Bit
T0ENL—Timer 0 Interrupt Request Enable Low Bit
U0RENL—UART 0 Receive Interrupt Request Enable Low Bit
U0TENL—UART 0 Transmit Interrupt Request Enable Low Bit
I2CENL—I
SPIENL—SPI Interrupt Request Enable Low Bit
ADCENL—ADC Interrupt Request Enable Low Bit
The IRQ1 Enable High and Low Bit registers (Tables 30 and 31) form a priority encoded
enabling for interrupts in the Interrupt Request 1 register. Priority is generated by setting
bits in each register. Table 29 describes the priority control for IRQ1.
Table 29. IRQ1 Enable and Priority Encoding
where x indicates the register bits from 0 through 7.
IRQ1ENH[x] IRQ1ENL[x] Priority
0
0
1
1
T1ENL
R/W
6
0
2
C Interrupt Request Enable Low Bit
T0ENL
0
1
0
1
R/W
5
0
Disabled
Level 1
Level 2
Level 3
U0RENL
R/W
4
0
Z8F640x/Z8F480x/Z8F320x/Z8F240x/Z8F160x
FC2H
U0TENL
R/W
Description
Disabled
Low
Nominal
High
3
0
I2CENL
R/W
2
0
SPIENL
R/W
Interrupt Controller
1
0
Z8 Encore!
ADCENL
R/W
0
0
®
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