TS80C51RA2-VCA Atmel, TS80C51RA2-VCA Datasheet - Page 42

• Manufacturer Part Number: TS80C51RA2-VCA
• Description: IC MCU 8BIT 256BYTE 40MHZ 40-DIP
• Manufacturer: Atmel
• Series: 80Cr

Specifications of TS80C51RA2-VCA

• Core Processor: 8051
• Core Size: 8-Bit
• Speed: 40/30MHz
• Connectivity: UART/USART
• Peripherals: POR, PWM, WDT
• Number Of I /o: 32
• Program Memory Type: ROMless
• Ram Size: 256 x 8
• Voltage - Supply (vcc/vdd): 4.5 V ~ 5.5 V
• Oscillator Type: Internal
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 40-DIP (0.600", 15.24mm)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Program Memory Size: -
• Data Converters: -

42
AT/TS8xC51Rx2
Table 6-18.
Reset Value = X000 0000b
Bit addressable
Bit Number
7
7
6
5
4
3
2
1
0
-
Bit Mnemonic
IP Register
IP - Interrupt Priority Register (B8h)
PPC
6
PPC
PT2
PT1
PX1
PT0
PX0
PS
-
PT2
5
Description
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.
PS
4
PT1
3
PX1
2
PT0
1
4188F–8051–01/08
PX0
0