AT89C51CC02 Atmel Corporation, AT89C51CC02 Datasheet - Page 138

• Manufacturer Part Number: AT89C51CC02
• Manufacturer: Atmel Corporation

Specifications of AT89C51CC02

• Flash (kbytes): 16 Kbytes
• Max. Operating Frequency: 40 MHz
• Cpu: 8051-12C
• Max I/o Pins: 20
• Uart: 1
• Can: 1
• Adc Channels: 8
• Adc Resolution (bits): 10
• Adc Speed (ksps): 62.5
• Sram (kbytes): 0.5
• Eeprom (bytes): 2048
• Self Program Memory: API
• Operating Voltage (vcc): 3.0 to 5.5
• Timers: 4
• Isp: UART/CAN
• Watchdog: Yes

138
AT/T89C51CC02
Table 112. IPH0 Register
IPH0 (B7h)
Interrupt High Priority Register
Reset Value = X000 0000b
Number
Bit
7
-
7
6
5
4
3
2
1
0
Mnemonic Description
PPCH
PPCH
PT2H
PT1H
PX1H
PT0H
PX0H
PSH
Bit
6
-
Reserved
The value read from this bit is indeterminate. Do not set this bit.
PCA Interrupt Priority Level Most Significant bit
PPCH PPC Priority level
0
0
1
1
Timer 2 Overflow Interrupt High Priority bit
PT2H PT2 Priority Level
0
0
1
1
Serial Port High Priority bit
PSH
0
0
1
1
Timer 1 Overflow Interrupt High Priority bit
PT1H PT1 Priority Level
0
0
1
1
External Interrupt 1 High Priority bit
PX1H PX1 Priority Level
0
0
1
1
Timer 0 Overflow Interrupt High Priority bit
PT0H PT0 Priority Level
0
0
1
1
External Interrupt 0 High Priority bit
PX0H PX0 Priority Level
0
0
1
1
PT2H
5
0
1
0
1
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
Lowest
Highest priority
Lowest
Highest
Priority Level
Lowest
Highest
Lowest
Highest
Lowest
Highest
Lowest
Highest
Lowest
Highest
PSH
4
PT1H
3
PX1H
2
PT0H
1
4126L–CAN–01/08
PX0H
0