AT80C51RD2-SLSUM Atmel, AT80C51RD2-SLSUM Datasheet - Page 48

• Manufacturer Part Number: AT80C51RD2-SLSUM
• Description: MCU, 8BIT, 8051, 5V, SPI, 20MHZ, 44PLCC
• Manufacturer: Atmel

Specifications of AT80C51RD2-SLSUM

• Controller Family/series: (8051) 8052
• No. Of I/o's: 32
• Ram Memory Size: 1280Byte
• Cpu Speed: 40MHz
• No. Of Timers: 3
• No. Of Pwm Channels: 5
• Core Size: 8bit
• Oscillator Type: External Only
• Processor Series: AT80x
• Core: 8051
• Data Bus Width: 8 bit
• Program Memory Type: ROMLess
• 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
• Package / Case: PLCC
• 3rd Party Development Tools: PK51, CA51, A51, ULINK2
• Minimum Operating Temperature: - 40 C
• Cpu Family: AT80
• Device Core: 8051
• Device Core Size: 8b
• Frequency (max): 40MHz
• Program Memory Size: Not Required
• Total Internal Ram Size: 1.25KB
• # I/os (max): 32
• Number Of Timers - General Purpose: 3
• Operating Supply Voltage (typ): 3.3/5V
• Operating Supply Voltage (max): 5.5V
• Operating Supply Voltage (min): 2.7V
• Instruction Set Architecture: CISC
• Operating Temp Range: -40C to 85C
• Operating Temperature Classification: Industrial
• Mounting: Surface Mount
• Pin Count: 44
• Package Type: PLCC
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

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