AT89C51RC2-3CSCM 查看數據表（PDF） - Atmel Corporation

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AT89C51RC2-3CSCM

8-bit Microcontroller with 16K/32K Bytes Flash

Atmel Corporation 

AT89C51RB2/RC2

Table 48. IPL1 Register

IPL1 - Interrupt Priority Register (B2h)

7

6

5

4

-

-

-

-

3

2

1

-

SPIL

-

Bit

Number

7

6

5

4

3

2

1

0

Bit

Mnemonic Description

-

Reserved

The value read from this bit is indeterminate. Do not set this bit.

-

Reserved

The value read from this bit is indeterminate. Do not set this bit.

-

Reserved

The value read from this bit is indeterminate. Do not set this bit.

-

Reserved

The value read from this bit is indeterminate. Do not set this bit.

-

Reserved

The value read from this bit is indeterminate. Do not set this bit.

SPIL

SPI Interrupt Priority Bit

see SPIH for priority level.

-

Reserved

The value read from this bit is indeterminate. Do not set this bit.

KBDL

Keyboard Interrupt Priority Bit

see KBDH for priority level.

Reset Value = XXXX X000b

Bit addressable

0

KBDL

61

4180E–8051–10/06

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