at89c51re2-slsem ATMEL Corporation, at89c51re2-slsem Datasheet - Page 116
at89c51re2-slsem
Manufacturer Part Number
at89c51re2-slsem
Description
At89c51re2 8-bit Flash Microcontroller
Manufacturer
ATMEL Corporation
Datasheet
1.AT89C51RE2-SLSEM.pdf
(167 pages)
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7663B–8051–03/07
Table 79. IPL1 Register
IPL1 - Interrupt Priority Register (B2h)
Reset Value = XXXX 00X0b
Bit addressable
Number
Bit
7
-
7
6
5
4
3
2
1
0
Mnemonic Description
PSL_1
KBDL
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.
Serial port 1 Priority bit
Refer to PSH_1 for priority level.
SPI interrupt Priority bit
Refer to SPIH for priority level.
Reserved
Keyboard interrupt Priority bit
Refer to KBDH for priority level.
5
-
4
-
PSL_1
3
SPIL
2
1
-
KBDL
0
99
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