AT89C51ED2-3CSIM Atmel, AT89C51ED2-3CSIM Datasheet - Page 79

• Manufacturer Part Number: AT89C51ED2-3CSIM
• Description: IC 8051 MCU FLASH 64K 40DIP
• Manufacturer: Atmel
• Series: 89Cr

Specifications of AT89C51ED2-3CSIM

• Core Processor: 8051
• Core Size: 8-Bit
• Speed: 60MHz
• Connectivity: SPI, UART/USART
• Peripherals: POR, PWM, WDT
• Number Of I /o: 34
• Program Memory Size: 64KB (64K x 8)
• Program Memory Type: FLASH
• Eeprom Size: 2K x 8
• Ram Size: 2K 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: 64 KB
• Interface Type: SPI, UART
• Maximum Clock Frequency: 60 MHz
• Number Of Programmable I/os: 32
• Number Of Timers: 3 x 16 bit
• Operating Supply Voltage: 2.7 V to 5.5 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: Through Hole
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Data Converters: -
• Lead Free Status / Rohs Status: No

4235K–8051–05/08
Table 17-8.
IPH1 - Interrupt Priority High Register (B3h)
Reset Value = XXXX X000b
Not bit addressable
Number
Bit
7
7
6
5
4
3
2
1
0
-
Mnemonic
IPH1 Register
KBDH
SPIH
Bit
6
-
-
-
-
-
-
-
Description
Reserved
The value read from this bit is indeterminate. Do not set this bit.
Reserved
The value read from this bit is indeterminate. Do not set this bit.
Reserved
The value read from this bit is indeterminate. Do not set this bit.
Reserved
The value read from this bit is indeterminate. Do not set this bit.
Reserved
The value read from this bit is indeterminate. Do not set this bit.
SPI interrupt Priority High bit
SPIHSPILPriority Level
0
0
1
1
Reserved
The value read from this bit is indeterminate. Do not set this bit.
Keyboard interrupt Priority High bit
KB DHKBDLPriority Level
0
0
1
1
5
-
0 Lowest
1
0
1 Highest
0 Lowest
1
0
1 Highest
4
-
3
-
AT89C51RD2/ED2
SPIH
2
1
-
KBDH
0
79