AT89C5122 ATMEL [ATMEL Corporation], AT89C5122 Datasheet - Page 164
AT89C5122
Manufacturer Part Number
AT89C5122
Description
MICROCONTROLLER WITH USB AND SMART CARD READER INTERFACES
Manufacturer
ATMEL [ATMEL Corporation]
Datasheet
1.AT89C5122.pdf
(213 pages)
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AT8xC5122/23
Table 100. Interrupt Enable Register 1 - IEN1 (B1h) for AT83C5123
Reset Value = X0XX 0XXXb (Bit addressable)
Table 101. Interrupt Priority Low Register 0 - IPL0 (B8h)
Reset Value = X000 0000b (Bit addressable)
Number
Number
5 - 4
7 - 5
Bit
Bit
7
7
6
3
2
1
0
7
4
3
2
1
0
-
-
Mnemonic Description
Mnemonic Description
EUSB
EUSB
ESCI
PT1L
PX1L
PT0L
PX0L
PSL
Bit
Bit
6
6
-
-
-
-
-
Reserved
The value read from this bit is indeterminate. Do not change these bits.
Serial port Priority bit
Refer to PSH for priority level.
Timer 1 overflow interrupt Priority bit
Refer to PT1H for priority level.
External interrupt 1 Priority bit
Refer to PX1H for priority level.
Timer 0 overflow interrupt Priority bit
Refer to PT0H for priority level.
External interrupt 0 Priority bit
Refer to PX0H for priority level.
Reserved
The value read from this bit is indeterminate. Do not change this bit.
USB Interrupt Enable bit
Cleared to disable USB interrupt .
Set to enable USB interrupt.
Reserved
The value read from this bit is indeterminate. Do not change these bits.
SCI interrupt Enable bit
Cleared to disable SCIinterrupt .
Set to enable SCI interrupt.
Reserved
The value read from this bit is indeterminate. Do not change this bit.
Reserved
The value read from this bit is indeterminate. Do not change this bit.
Reserved
The value read from this bit is indeterminate. Do not change this bit.
5
5
-
-
PSL
4
4
-
ESCI
PT1L
3
3
PX1L
2
2
PT0L
1
1
-
4202D–SCR–06/05
PX0L
0
0
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