AT89S8253-24PSC ATMEL [ATMEL Corporation], AT89S8253-24PSC Datasheet - Page 32
AT89S8253-24PSC
Manufacturer Part Number
AT89S8253-24PSC
Description
8-bit Microcontroller with 12K Bytes Flash and 2K Bytes EEPROM
Manufacturer
ATMEL [ATMEL Corporation]
Datasheet
1.AT89S8253-24PSC.pdf
(59 pages)
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Table 15-2.
Table 15-3.
Figure 15-1. Interrupt Sources
32
Symbol
PT2
PS
PT1
PX1
PT0
PX0
Symbol
PT2H
PSH
PT1H
PX1H
PT0H
PX0H
IP = B8H
Bit Addressable
Bit
IPH = B7H
Not Bit Addressable
Bit
AT89S8253
Function
Timer 2 Interrupt Priority Low
Serial Port Interrupt Priority Low
Timer 1 Interrupt Priority Low
External Interrupt 1 Priority Low
Timer 0 Interrupt Priority Low
External Interrupt 0 Priority Low
Function
Timer 2 Interrupt Priority High
Serial Port Interrupt Priority High
Timer 1 Interrupt Priority High
External Interrupt 1 Priority High
Timer 0 Interrupt Priority High
External Interrupt 0 Priority High
IP
IPH
– Interrupt Priority Register
–
7
–
7
– Interrupt Priority High Register
.
–
6
–
6
PT2H
PT2
5
5
PSH
PS
4
4
PT1H
PT1
3
3
PX1H
PX1
2
2
Reset Value = XX00 0000B
Reset Value = XX00 0000B
PT0H
PT0
1
1
PX0H
3286L–MICRO–8/08
PX0
0
0
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