AT89LP51ED2 Atmel Corporation, AT89LP51ED2 Datasheet - Page 250

• 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

Table of Contents (Continued)
ii
AT89LP51RD2/ED2/ID2 Preliminary
7
8
9
10 External Interrupts ................................................................................. 68
11 Keyboard Interface and General-purpose Interrupts .......................... 68
12 I/O Ports .................................................................................................. 71
13 Enhanced Timer 0 and Timer 1 with PWM ........................................... 79
Reset ....................................................................................................... 53
Power Saving Modes ............................................................................. 57
Interrupts ................................................................................................ 61
6.6
6.7
6.8
6.9
6.10
7.1
7.2
7.3
7.4
7.5
7.6
8.1
8.2
8.3
8.4
9.1
9.2
9.3
11.1
12.1
12.2
12.3
12.4
13.1
13.2
Dual Oscillator Support (AT89LP51ID2) ..........................................................46
X1/X2 Feature .................................................................................................48
System Clock Prescaler ..................................................................................49
Peripheral Clocks ............................................................................................50
Timer Subclock (AT89L51ID2) ........................................................................52
Power-on Reset ...............................................................................................53
Brown-out Reset ..............................................................................................54
External Reset .................................................................................................55
Hardware Watchdog Reset .............................................................................56
PCA Watchdog Reset ......................................................................................56
Software Reset ................................................................................................56
Idle Mode .........................................................................................................57
Power-down Mode ...........................................................................................58
Reducing Power Consumption ........................................................................59
Low Power Configuration ................................................................................60
Interrupt Priority ...............................................................................................61
Interrupt Response ..........................................................................................63
Interrupt Registers ...........................................................................................65
Registers .........................................................................................................70
Port Configuration ............................................................................................71
Port Analog Functions .....................................................................................74
Port Read-Modify-Write ...................................................................................75
Port Alternate Functions ..................................................................................75
Registers .........................................................................................................80
Mode 0 – Variable Width Timer/Counter .........................................................82
3714A–MICRO–7/11