AT89C51ID2-SLSIM Atmel, AT89C51ID2-SLSIM Datasheet - Page 69
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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4289C–8051–11/05
Table 53. IPL1 Register
IPL1 - Interrupt Priority Register (B2h)
Table 54.
Reset Value = XXXX X000b
Bit addressable
Number
Bit
7
-
7
6
5
4
3
2
1
0
Mnemonic Description
KBDL
TWIL
SPIL
Bit
6
-
-
-
-
-
-
Reserved
The value read from this bit is indeterminate. Do not set this bit.
Reserved
The value read from this bit is indeterminate. Do not set this bit.
Reserved
The value read from this bit is indeterminate. Do not set this bit.
Reserved
The value read from this bit is indeterminate. Do not set this bit.
Reserved
The value read from this bit is indeterminate. Do not set this bit.
SPI interrupt Priority bit
Refer to SPIH for priority level.
TWI interrupt Priority bit
Refer to TWIH for priority level.
Keyboard interrupt Priority bit
Refer to KBDH for priority level.
5
-
4
-
3
-
SPIL
2
AT89C51ID2
TWIL
1
KBDL
0
69
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