AT89C51CC01 Atmel Corporation, AT89C51CC01 Datasheet - Page 140

• Manufacturer Part Number: AT89C51CC01
• Manufacturer: Atmel Corporation

Specifications of AT89C51CC01

• Flash (kbytes): 32 Kbytes
• Max. Operating Frequency: 40 MHz
• Cpu: 8051-12C
• Max I/o Pins: 34
• Uart: 1
• Can: 1
• Adc Channels: 8
• Adc Resolution (bits): 10
• Adc Speed (ksps): 62.5
• Sram (kbytes): 1.25
• Eeprom (bytes): 2048
• Self Program Memory: API
• Operating Voltage (vcc): 3.0 to 5.5
• Timers: 4
• Isp: UART/CAN
• Watchdog: Yes

140
A/T89C51CC01
Table 117. IPL0 Register
IPL0 (S:B8h)
Interrupt Enable Register
Reset Value = X000 0000b
bit addressable
Number
Bit
7
-
7
6
5
4
3
2
1
0
Mnemonic Description
PPC
PPC
PX1
PX0
PT2
PT1
PT0
Bit
PS
6
-
Reserved
The value read from this bit is indeterminate. Do not set this bit.
PCA Interrupt Priority bit
Refer to PPCH for priority level
Timer 2 Overflow Interrupt Priority bit
Refer to PT2H for priority level.
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.
PT2
5
PS
4
PT1
3
PX1
2
PT0
1
4129N–CAN–03/08
PX0
0