AT87C52X2-3CSUV Atmel, AT87C52X2-3CSUV Datasheet - Page 25
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AT87C52X2-3CSUV
Manufacturer Part Number
AT87C52X2-3CSUV
Description
Microcontrollers (MCU) Microcontroller
Manufacturer
Atmel
Datasheet
1.AT87C52X2-3CSUV.pdf
(55 pages)
Specifications of AT87C52X2-3CSUV
Data Bus Width
8 bit
Program Memory Type
EPROM
Program Memory Size
8 KB
Data Ram Size
256 B
Interface Type
UART
Maximum Clock Frequency
30 MHz
Number Of Programmable I/os
32
Number Of Timers
3 bit
Operating Supply Voltage
5 V
Maximum Operating Temperature
+ 70 C
Mounting Style
Through Hole
Package / Case
PDIL-40
Minimum Operating Temperature
0 C
Lead Free Status / Rohs Status
No
4184I–8051–02/08
Table 14. IPH Register
IPH - Interrupt Priority High Register (B7h)
Reset Value = XX00 0000b
Not bit addressable
Number
Bit
7
6
5
4
3
2
1
0
7
-
Mnemonic Description
PT2H
PT1H
PX1H
PT0H
PX0H
PSH
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.
Timer 2 overflow interrupt Priority High bit
Serial port Priority High bit
Timer 1 overflow interrupt Priority High bit
External interrupt 1 Priority High bit
Timer 0 overflow interrupt Priority High bit
External interrupt 0 Priority High bit
PT2H PT2
0
0
1
1
PSH
0
0
1
1
PT1H PT1
0
0
1
1
PX1H PX1 Priority Level
0
0
1
1
PT0H PT0
0
0
1
1
PX0H PX0 Priority Level
0
0
1
1
PT2H
5
0
1
0
1
PS
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
Priority Level
Lowest
Highest
Priority Level
Lowest
Highest
Priority Level
Lowest
Highest
Lowest
Highest
Priority Level
Lowest
Highest
Lowest
Highest
PSH
4
PT1H
3
PX1H
2
PT0H
1
PX0H
0
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