Rainbow-electronics AT89C5122 Manuel d'utilisateur télécharger pdf (Page 158)

158

AT8xC5122/23

4202E–SCR–06/06

Reset Value = 0000 0000b

Table 96. Keyboard Level Selector Register - KBLS (9Ch)

76543210

KBLS7 KBLS6 KBLS5 KBLS4 KBLS3 KBLS2 KBLS1 KBLS0

Bit

Number

Bit

Mnemonic Description

7 KBLS7

Keyboard line 7 Level Selection bit

Cleared to enable a low level detection on Port line 7.

Set to enable a high level detection on Port line 7.

6 KBLS6

Keyboard line 6 Level Selection bit

Cleared to enable a low level detection on Port line 6.

Set to enable a high level detection on Port line 6.

5 KBLS5

Keyboard line 5 Level Selection bit

Cleared to enable a low level detection on Port line 5.

Set to enable a high level detection on Port line 5.

4 KBLS4

Keyboard line 4 Level Selection bit

Cleared to enable a low level detection on Port line 4.

Set to enable a high level detection on Port line 4.

3 KBLS3

Keyboard line 3 Level Selection bit

Cleared to enable a low level detection on Port line 3.

Set to enable a high level detection on Port line 3.

2 KBLS2

Keyboard line 2 Level Selection bit

Cleared to enable a low level detection on Port line 2.

Set to enable a high level detection on Port line 2.

1 KBLS1

Keyboard line 1 Level Selection bit

Cleared to enable a low level detection on Port line 1.

Set to enable a high level detection on Port line 1.

0 KBLS0

Keyboard line 0 Level Selection bit

Cleared to enable a low level detection on Port line 0.

Set to enable a high level detection on Port line 0.

1 2 ... 153 154 155 156 157 158 159 160 161 162 163 ... 212 213

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Rainbow-electronics AT89C5122 Manuel d'utilisateur Page 158

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