AT89C51RE2-SLSUM Atmel, AT89C51RE2-SLSUM Datasheet - Page 113

• Manufacturer Part Number: AT89C51RE2-SLSUM
• Description: MCU 8BIT FLASH 2.7-5.5V 44-PLCC
• Manufacturer: Atmel
• Series: 89Cr

Specifications of AT89C51RE2-SLSUM

• Core Processor: 8051
• Core Size: 8-Bit
• Speed: 60MHz
• Connectivity: I²C, SPI, UART/USART
• Peripherals: POR, PWM, WDT
• Number Of I /o: 34
• Program Memory Size: 128KB (128K x 8)
• Program Memory Type: FLASH
• Ram Size: 8K x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Oscillator Type: External
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 44-PLCC
• Package: 44PLCC
• Device Core: 8051
• Family Name: 89C
• Maximum Speed: 40 MHz
• Operating Supply Voltage: 3.3|5 V
• Data Bus Width: 8 Bit
• Number Of Programmable I/os: 34
• Interface Type: SPI/TWI/UART
• Number Of Timers: 3
• Processor Series: AT89x
• Core: 8051
• Data Ram Size: 8 KB
• Maximum Clock Frequency: 40 MHz
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: PK51, CA51, A51, ULINK2
• Development Tools By Supplier: AT89OCD-01
• Minimum Operating Temperature: - 40 C
• Cpu Family: 89C
• Device Core Size: 8b
• Frequency (max): 40MHz
• Total Internal Ram Size: 8KB
• # I/os (max): 34
• 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
• For Use With: AT89OCD-01 - USB EMULATOR FOR AT8XC51 MCUAT89STK-11 - KIT STARTER FOR AT89C51RX2
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Data Converters: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

7663E–8051–10/08
Table 83. IPH0 Register
IPH0 - Interrupt Priority High Register (B7h)
Reset Value = X000 0000b
Not bit addressable
Number
Bit
7
7
6
5
4
3
2
1
0
-
Mnemonic
PPCH
PPCH
PX1H
PX0H
PT2H
PT1H
PT0H
PSH
Bit
6
-
Description
Reserved
The value read from this bit is indeterminate. Do not set this bit.
PCA interrupt Priority high bit.
PPCH PPCL Priority Level
0
0
1
1
Timer 2 overflow interrupt Priority High bit
PT2H PT2L
0
0
1
1
Serial port Priority High bit
PSH
0
0
1
1
Timer 1 overflow interrupt Priority High bit
PT1H PT1L
0
0
1
1
External interrupt 1 Priority High bit
PX1H PX1L
0
0
1
1
Timer 0 overflow interrupt Priority High bit
PT0H PT0L
0
0
1
1
External interrupt 0 Priority High bit
PX0H PX0L
0
0
1
1
PT2H
5
0
1
0
1
0
1
0
1
PSL
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
0
1
Lowest
Highest
Priority Level
Lowest
Highest
Priority Level
Lowest
Highest
Highest
Priority Level
Lowest
Highest
Priority Level
Lowest
Highest
Priority Level
Lowest
Highest
Priority Level
Lowest
PSH
4
PT1H
3
PX1H
2
AT89C51RE2
PT0H
1
PX0H
0
113