Rainbow-electronics AT89C5122 Manual do Utilizador descarregar pdf (Página 157)

157

AT8xC5122/23

4202E–SCR–06/06

Reset Value = 0000 0000b

Table 95. Keyboard Input Enable Register - KBE (9Dh)

76543210

KBE7 KBE6 KBE5 KBE4 KBE3 KBE2 KBE1 KBE0

Bit

Number

Bit

Mnemonic Description

7 KBE7

Keyboard line 7 Enable bit

Cleared to enable standard I/O pin.

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

6 KBE6

Keyboard line 6 Enable bit

Cleared to enable standard I/O pin.

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

5 KBE5

Keyboard line 5 Enable bit

Cleared to enable standard I/O pin.

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

4 KBE4

Keyboard line 4 Enable bit

Cleared to enable standard I/O pin.

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

3 KBE3

Keyboard line 3 Enable bit

Cleared to enable standard I/O pin.

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

2 KBE2

Keyboard line 2 Enable bit

Cleared to enable standard I/O pin.

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

1 KBE1

Keyboard line 1 Enable bit

Cleared to enable standard I/O pin.

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

0 KBE0

Keyboard line 0 Enable bit

Cleared to enable standard I/O pin.

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

1 2 ... 152 153 154 155 156 157 158 159 160 161 162 ... 212 213

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