AT80C51RD2-RLRUM Atmel, AT80C51RD2-RLRUM Datasheet - Page 48

• Manufacturer Part Number: AT80C51RD2-RLRUM
• Description: IC MCU 80C51 HI PERFORM 44VQFP
• Manufacturer: Atmel
• Series: 80Cr

Specifications of AT80C51RD2-RLRUM

• Core Processor: 8051
• Core Size: 8-Bit
• Speed: 40MHz
• Connectivity: UART/USART
• Peripherals: POR, PWM, WDT
• Number Of I /o: 32
• Program Memory Type: ROMless
• Ram Size: 1K x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 44-TQFP, 44-VQFP
• Processor Series: AT80x
• Core: 8051
• Data Bus Width: 8 bit
• Data Ram Size: 1280 B
• Interface Type: UART, SPI
• Maximum Clock Frequency: 60 MHz
• Number Of Programmable I/os: 32
• Number Of Timers: 3
• Operating Supply Voltage: 2.7 V to 5.5 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: PK51, CA51, A51, ULINK2
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Program Memory Size: -
• Data Converters: -
• Lead Free Status / Rohs Status: Details

48
AT80C51RD2
Reset Value = X000 0000b
Not bit addressable
Table 12-5.
IE1 - Interrupt Enable Register (B1h)
Number
Bit
7
6
5
4
3
2
1
0
7
-
IE1 Register
Mnemonic Description
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 high bit.
PPCHPPCLPriority Level
0
0
1
1
Timer 2 overflow interrupt priority high bit
PT2HPT2LPriority Level
0
0
1
1
Serial port priority high bit
PSH PSLPriority Level
0
0
1
1
Timer 1 overflow interrupt priority high bit
PT1HPT1LPriority Level
0
0
1
1
External interrupt 1 priority high bit
PX1HPX1LPriority Level
0
0
1
1
Timer 0 overflow interrupt priority high bit
PT0HPT0LPriority Level
0
0
1
1
External interrupt 0 priority high bit
PX0H PX0LPriority Level
0
0
1
1
0Lowest
1
0
1Highest
0Lowest
1
0
1Highest
0Lowest
1
0
1Highest
0 Lowest
1
0
1 Highest
0Lowest
1
0
1Highest
0Lowest
1
0
1Highest
0Lowest
1
0
1Highest
5
-
4
-
3
-
2
-
1
-
4113D–8051–01/09
KBD
0