AT89C51ED2-SMRUM Atmel, AT89C51ED2-SMRUM Datasheet - Page 78

• Manufacturer Part Number: AT89C51ED2-SMRUM
• Description: IC MCU FLASH 8051 64K 5V 68PLCC
• Manufacturer: Atmel
• Series: 89Cr

Specifications of AT89C51ED2-SMRUM

• Core Processor: 8051
• Core Size: 8-Bit
• Speed: 60MHz
• Connectivity: SPI, UART/USART
• Peripherals: POR, PWM, WDT
• Number Of I /o: 50
• 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: 68-PLCC
• Processor Series: AT89x
• Core: 8051
• Data Bus Width: 8 bit
• Data Ram Size: 2 KB
• 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
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: PK51, CA51, A51, ULINK2
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Data Converters: -
• Lead Free Status / Rohs Status: Details

78
AT89C51RD2/ED2
Table 17-7.
IPL1 - Interrupt Priority Register (B2h)
Reset Value = XXXX X000b
Bit addressable
Number
Bit
7
7
6
5
4
3
2
1
0
-
Mnemonic
IPL1 Register
KBDL
SPIL
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 bit
Refer to SPIH for priority level.
Reserved
The value read from this bit is indeterminate. Do not set this bit.
Keyboard interrupt Priority bit
Refer to KBDH for priority level.
5
-
4
-
3
-
SPIL
2
TWIL
1
4235K–8051–05/08
KBDL
0