AT80C51RD2-SLSIM Atmel, AT80C51RD2-SLSIM Datasheet - Page 49

• Manufacturer Part Number: AT80C51RD2-SLSIM
• Description: IC MCU 8051 5V SPI 20MHZ 44-PLCC
• Manufacturer: Atmel
• Series: 80Cr

Specifications of AT80C51RD2-SLSIM

• Core Processor: 8051
• Core Size: 8-Bit
• Speed: 40MHz
• Connectivity: UART/USART
• Peripherals: POR, PWM, WDT
• Number Of I /o: 32
• Program Memory Type: ROMless
• Ram Size: 1K x 8
• Voltage - Supply (vcc/vdd): 4.5 V ~ 5.5 V
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 44-PLCC
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Program Memory Size: -
• Data Converters: -

4113D–8051–01/09
Reset Value = XXXX XXX0b
Bit addressable
Table 12-6.
IPL1 - Interrupt Priority Register (B2h)
Reset Value = XXXX XXX0b
Bit addressable
Table 12-7.
Number
Number
Bit
Bit
7
7
6
5
4
3
2
1
0
7
6
5
4
3
2
1
0
-
IPL1 Register
IPH1 Register
Mnemonic Description
Mnemonic Description
KBDL
KBD
Bit
Bit
6
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Keyboard interrupt Enable bit
Cleared to disable keyboard interrupt.
Set to enable keyboard interrupt.
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.
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.
Keyboard Interrupt Priority bit
Refer to KBDH for priority level.
5
-
4
-
3
-
2
-
AT80C51RD2
1
-
KBDL
0
49