TS80C51RA2-VIA Atmel, TS80C51RA2-VIA Datasheet - Page 42

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

Specifications of TS80C51RA2-VIA

• 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: -40°C ~ 85°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: -

TS80C51RA2/RD2
TS83C51RB2/RC2/RD2
TS87C51RB2/RC2/RD2
IP - Interrupt Priority Register (B8h)
Reset Value = X000 0000b
Bit addressable
42
Bit Number
7
6
5
4
3
2
1
0
7
-
Mnemonic
PPC
PT2
PT1
PX1
PT0
PX0
Bit
PS
-
PPC
6
Reserved
PCA interrupt priority bit
Timer 2 overflow interrupt Priority bit
Serial port Priority bit
Timer 1 overflow interrupt Priority bit
External interrupt 1 Priority bit
Timer 0 overflow interrupt Priority bit
External interrupt 0 Priority bit
The value read from this bit is indeterminate. Do not set this bit.
Refer to PPCH for priority level.
Refer to PT2H for priority level.
Refer to PSH for priority level.
Refer to PT1H for priority level.
Refer to PX1H for priority level.
Refer to PT0H for priority level.
Refer to PX0H for priority level.
PT2
5
Table 20. IP Register
PS
4
PT1
3
Description
PX1
2
Rev. C - 06 March, 2001
PT0
1
PX0
0