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 

Table 52. KBE Register

KBE - Keyboard Input Enable Register (9Dh)

7

KBE7

6

KBE6

5

KBE5

4

KBE4

3

KBE3

2

KBE2

1

KBE1

0

KBE0

Bit

Bit

Number Mnemonic Description

Keyboard Line 7 Enable Bit

7

KBE7 Cleared to enable standard I/O pin.

Set to enable KBF. 7 bit in KBF register to generate an interrupt request.

Keyboard Line 6 Enable Bit

6

KBE6 Cleared to enable standard I/O pin.

Set to enable KBF. 6 bit in KBF register to generate an interrupt request.

Keyboard Line 5 Enable Bit

5

KBE5 Cleared to enable standard I/O pin.

Set to enable KBF. 5 bit in KBF register to generate an interrupt request.

Keyboard Line 4 Enable Bit

4

KBE4 Cleared to enable standard I/O pin.

Set to enable KBF. 4 bit in KBF register to generate an interrupt request.

Keyboard Line 3 Enable Bit

3

KBE3 Cleared to enable standard I/O pin.

Set to enable KBF. 3 bit in KBF register to generate an interrupt request.

Keyboard Line 2 Enable Bit

2

KBE2 Cleared to enable standard I/O pin.

Set to enable KBF. 2 bit in KBF register to generate an interrupt request.

Keyboard Line 1 Enable Bit

1

KBE1 Cleared to enable standard I/O pin.

Set to enable KBF. 1 bit in KBF register to generate an interrupt request.

Keyboard Line 0 Enable Bit

0

KBE0 Cleared to enable standard I/O pin.

Set to enable KBF. 0 bit in KBF register to generate an interrupt request.

Reset Value = 0000 0000b

66 AT89C51RB2/RC2

4180E–8051–10/06

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