at89c5131 ATMEL Corporation, at89c5131 Datasheet - Page 81

• Manufacturer Part Number: at89c5131
• Description: 8-bit Flash Microcontroller With Full Speed Usb Device At89c5131
• Manufacturer: ATMEL Corporation

80
AT89C5131
Table 65. IEN1 Register
IEN1 - Interrupt Enable Register (B1h)
Reset Value = X0XX X000b
Not bit addressable
Number
Bit
7
6
5
4
3
2
1
0
7
-
Mnemonic
EUSB
EUSB
ETWI
ESPI
EKB
Bit
6
-
-
-
-
Description
Reserved
USB Interrupt Enable bit
Cleared to disable USB interrupt.
Set to enable USB interrupt.
Reserved
Reserved
Reserved
SPI interrupt Enable bit
Cleared to disable SPI interrupt.
Set to enable SPI interrupt.
TWI interrupt Enable bit
Cleared to disable TWI interrupt.
Set to enable TWI interrupt.
Keyboard interrupt Enable bit
Cleared to disable keyboard interrupt.
Set to enable keyboard interrupt.
5
-
4
-
3
-
ESPI
2
ETWI
1
4136C–USB–04/05
EKB
0