AT89LP51ED2 Atmel Corporation, AT89LP51ED2 Datasheet - Page 78

• 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

78
AT89LP51RD2/ED2/ID2 Preliminary
Table 12-7.
Port Pin
P3.7
P4.0
P4.1
P4.2
P4.4
P4.5
P4.6
P4.7
Port Pin Alternate Functions
PxM0.y
P3M0.7
P4M0.0
P4M0.1
P4M0.2
P4M0.4
P4M0.5
P4M0.6
P4M0.7
Configuration Bits
PxM1.y
P3M1.7
P4M1.0
P4M1.1
P4M1.2
P4M1.4
P4M1.5
P4M1.6
P4M1.7
Alternate
Function
XTAL2B
XTAL1A
XTAL2A
PSEN
SDA
SCL
ALE
RD
Notes
open-drain
open-drain
OSCB must be disabled or in
internal oscillator or external clock
modes to use P4.2(AT89LP51ID2)
Set AO in AUXR to use P4.4
OSCA must be set to internal RC
mode to use P4.6
OSCA must be set to internal RC
or external clock modes to use
P4.7
3714A–MICRO–711