AT89C51ED2-3CSIM Atmel, AT89C51ED2-3CSIM Datasheet - Page 61

• 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 15-2.
KBE-Keyboard Input Enable Register (9Dh)
Reset Value = 0000 0000b
Number
KBE7
Bit
7
7
6
5
4
3
2
1
0
Mnemonic
KBE Register
KBE6
KBE7
KBE6
KBE5
KBE4
KBE3
KBE2
KBE1
KBE0
Bit
6
Description
Keyboard line 7 Enable bit
Cleared to enable standard I/O pin.
Set to enable KBF.7 bit in KBF register to generate an interrupt request.
Keyboard line 6 Enable bit
Cleared to enable standard I/O pin.
Set to enable KBF.6 bit in KBF register to generate an interrupt request.
Keyboard line 5 Enable bit
Cleared to enable standard I/O pin.
Set to enable KBF.5 bit in KBF register to generate an interrupt request.
Keyboard line 4 Enable bit
Cleared to enable standard I/O pin.
Set to enable KBF.4 bit in KBF register to generate an interrupt request.
Keyboard line 3 Enable bit
Cleared to enable standard I/O pin.
Set to enable KBF.3 bit in KBF register to generate an interrupt request.
Keyboard line 2 Enable bit
Cleared to enable standard I/O pin.
Set to enable KBF.2 bit in KBF register to generate an interrupt request.
Keyboard line 1 Enable bit
Cleared to enable standard I/O pin.
Set to enable KBF.1 bit in KBF register to generate an interrupt request.
Keyboard line 0 Enable bit
Cleared to enable standard I/O pin.
Set to enable KBF.0 bit in KBF register to generate an interrupt request.
KBE5
5
KBE4
4
KBE3
3
AT89C51RD2/ED2
KBE2
2
KBE1
1
KBE0
0
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