AT89C51RC2-3CSCM 데이터 시트보기 (PDF) - Atmel Corporation

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AT89C51RC2-3CSCM

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

Atmel Corporation 

Table 47. IEN1 Register

IEN1 - Interrupt Enable Register (B1h)

7

6

5

4

-

-

-

-

3

2

1

0

-

ESPI

-

KBD

Bit

Bit

Number Mnemonic Description

7

-

Reserved

6

-

Reserved

5

-

Reserved

4

-

Reserved

3

-

Reserved

SPI Interrupt Enable Bit

2

ESPI Cleared to disable SPI interrupt.

Set to enable SPI interrupt.

1

-

Reserved

Keyboard Interrupt Enable Bit

0

KBD Cleared to disable keyboard interrupt.

Set to enable keyboard interrupt.

Reset Value = XXXX X000b

Bit addressable

60 AT89C51RB2/RC2

4180E–8051–10/06

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