AT80C51RD2-SLSUM Atmel, AT80C51RD2-SLSUM Datasheet - Page 47

• 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

4113D–8051–01/09
Reset Value = 0000 0000b
Bit addressable
Table 12-3.
IPL0 - Interrupt Priority Register (B8h)
Reset Value = X000 0000b
Bit addressable
Table 12-4.
IPH0 - Interrupt Priority High Register (B7h)
Number
Bit
7
7
7
6
5
4
3
2
1
0
-
-
IPL0 Register
IPH0 Register
Mnemonic Description
PPCH
PPCL
PPCL
PX1L
PX0L
PT2L
PT1L
PT0L
PSL
Bit
6
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.
PT2H
PT2L
5
5
PSH
PSL
4
4
PT1H
PT1L
3
3
PX1L
PX1H
2
2
AT80C51RD2
PT0L
PT0H
1
1
PX0H
PX0L
0
0
47