at89c51rc2-slsil ATMEL Corporation, at89c51rc2-slsil Datasheet - Page 60
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at89c51rc2-slsil
Manufacturer Part Number
at89c51rc2-slsil
Description
8-bit Microcontroller With 16k/ 32k Bytes Flash
Manufacturer
ATMEL Corporation
Datasheet
1.AT89C51RC2-SLSIL.pdf
(127 pages)
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60
AT89C51RB2/RC2
Table 47. IEN1 Register
IEN1 - Interrupt Enable Register (B1h)
Reset Value = XXXX X000b
Bit addressable
Number
Bit
7
7
6
5
4
3
2
1
0
-
Mnemonic Description
ESPI
KBD
Bit
6
-
-
-
-
-
-
-
Reserved
Reserved
Reserved
Reserved
Reserved
SPI Interrupt Enable Bit
Cleared to disable SPI interrupt.
Set to enable SPI interrupt.
Reserved
Keyboard Interrupt Enable Bit
Cleared to disable keyboard interrupt.
Set to enable keyboard interrupt.
5
-
4
-
3
-
ESPI
2
1
-
4180E–8051–10/06
KBD
0
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