AT89C51RB2-3CSIM Atmel, AT89C51RB2-3CSIM Datasheet - Page 59

• Manufacturer Part Number: AT89C51RB2-3CSIM
• Description: IC 8051 MCU FLASH 16K 40DIP
• Manufacturer: Atmel
• Series: 89Cr

Specifications of AT89C51RB2-3CSIM

• Core Processor: 8051
• Core Size: 8-Bit
• Speed: 60MHz
• Connectivity: SPI, UART/USART
• Peripherals: POR, PWM, WDT
• Number Of I /o: 32
• Program Memory Size: 16KB (16K x 8)
• Program Memory Type: FLASH
• Ram Size: 1.25K x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Oscillator Type: External
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 40-DIP (0.600", 15.24mm)
• Data Bus Width: 8 bit
• Data Ram Size: 1.25 KB
• Interface Type: SPI, UART
• Maximum Clock Frequency: 40 MHz
• Number Of Programmable I/os: 32
• Number Of Timers: 3
• Operating Supply Voltage: 5 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: Through Hole
• Minimum Operating Temperature: - 40 C
• For Use With: AT89STK-11 - KIT STARTER FOR AT89C51RX2
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Data Converters: -
• Lead Free Status / Rohs Status: No

4180E–8051–10/06
Table 46. 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 Description
PPCH
PPCH
PX1H
PX0H
PT2H
PT1H
PT0H
PSH
Bit
6
-
Reserved
The value read from this bit is indeterminate. Do not set this bit.
PCA Interrupt Priority High Bit
PPCHPPCL
0
0
1
1
Timer 2 Overflow Interrupt Priority High Bit
PT2HPT2L
0
0
1
1
Serial Port Priority High Bit
PSH PSL
0
0
1
1
Timer 1 Overflow Interrupt Priority High Bit
PT1HPT1L
0
0
1
1
External Interrupt 1 Priority High Bit
PX1HPX1L
0
0
1
1
Timer 0 Overflow Interrupt Priority High Bit
PT0HPT0L
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
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
Priority Level
Lowest
Highest
Priority Level
Lowest
Highest
Priority Level
Lowest
Highest
Priority Level
Lowest
Highest
Priority Level
Lowest
Highest
Priority Level
Lowest
Highest
Priority Level
Lowest
Highest
PSH
4
PT1H
3
AT89C51RB2/RC2
PX1H
2
PT0H
1
PX0H
0
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