89C51IC2-CM ATMEL [ATMEL Corporation], 89C51IC2-CM Datasheet - Page 64
89C51IC2-CM
Manufacturer Part Number
89C51IC2-CM
Description
8-bit Flash Microcontroller with 2-wire Interface
Manufacturer
ATMEL [ATMEL Corporation]
Datasheet
1.89C51IC2-CM.pdf
(146 pages)
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AT89C51IC2
Table 52. IPL1 Register
IPL1 - Interrupt Priority Register (B2h)
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
TWIL
1
4301A–8051–01/04
KBDL
0
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