AT89LP51ED2 Atmel Corporation, AT89LP51ED2 Datasheet - Page 69

• Manufacturer Part Number: AT89LP51ED2
• Manufacturer: Atmel Corporation

Specifications of AT89LP51ED2

• Flash (kbytes): 64 Kbytes
• Max. Operating Frequency: 20 MHz
• Cpu: 8051-1C
• Max I/o Pins: 42
• Spi: 1
• Twi (i2c): 1
• Uart: 1
• Adc Channels: 7
• Adc Resolution (bits): 10
• Adc Speed (ksps): 153.8
• Sram (kbytes): 2.25
• Eeprom (bytes): 4096
• Self Program Memory: API
• Operating Voltage (vcc): 2.4 to 5.5
• Timers: 4
• Isp: SPI/OCD/UART
• Watchdog: Yes

Figure 11-1. Keyboard Block Diagram
3714A–MICRO–7/11
(P1.7) GPI7
(P1.6) GPI6
(P1.5) GPI5
(P1.4) GPI4
(P1.3) GPI3
(P1.2) GPI2
(P1.1) GPI1
(P1.0) GPI0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
KBLS
7
6
5
4
3
2
1
0
KBMOD
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
7
6
5
4
3
2
1
0
AT89LP51RD2/ED2/ID2 Preliminary
7
6
5
4
3
2
1
0
KBE
CLK
D Q
D Q
D Q
D Q
D Q
D Q
D Q
D Q
KBF
7
6
5
4
3
2
1
0
Interrupt
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