AT89C51ID2-SLSIM Atmel, AT89C51ID2-SLSIM Datasheet - Page 79
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AT89C51ID2-SLSIM
Manufacturer Part Number
AT89C51ID2-SLSIM
Description
C51ID2 64KF TWI 32KHZ PLCC44 3-5.5V IND.
Manufacturer
Atmel
Datasheet
1.AT89C51ID2-SLSIM.pdf
(157 pages)
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AT89C51ID2
Table 61. KBLS Register
KBLS-Keyboard Level Selector Register (9Ch)
Reset Value= 0000 0000b
Number
KBLS7
Bit
7
7
6
5
4
3
2
1
0
Mnemonic Description
KBLS6
KBLS7
KBLS6
KBLS5
KBLS4
KBLS3
KBLS2
KBLS1
KBLS0
Bit
6
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.
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.
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.
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.
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.
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.
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.
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.
KBLS5
5
KBLS4
4
KBLS3
3
KBLS2
2
KBLS1
1
4289C–8051–11/05
KBLS0
0
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