AT89LP51RB2 Atmel Corporation, AT89LP51RB2 Datasheet - Page 74

• Manufacturer Part Number: AT89LP51RB2
• Manufacturer: Atmel Corporation

Specifications of AT89LP51RB2

• 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): 1.375
• Self Program Memory: API
• Operating Voltage (vcc): 2.4 to 5.5
• Timers: 4
• Isp: SPI/OCD/UART
• Watchdog: Yes

74
AT89LP51RB2/RC2/IC2 Preliminary
Table 12-6.
Table 12-7.
Port Pin
P0.0
P0.1
P0.2
P0.3
P0.4
P0.5
P0.6
P0.7
P1.0
P1.1
P1.2
P1.3
PxM0.y
0
0
1
1
Pin Function Configurations for Port x Pin y
Port Pin Alternate Functions
PxM0.y
P0M0.0
P0M0.1
P0M0.2
P0M0.3
P0M0.4
P0M0.5
P0M0.6
P0M0.7
P1M0.0
P1M0.1
P1M0.2
P1M0.3
Configuration Bits
PxM1.y
0
1
0
1
PxM1.y
P0M1.0
P0M1.1
P0M1.2
P0M1.3
P0M1.4
P0M1.5
P0M1.6
P0M1.7
P1M1.0
P1M1.1
P1M1.2
P1M1.3
Px.y
Alternate
Function
XTAL1B
X
1
1
1
ADC0
ADC1
ADC2
ADC3
ADC4
ADC5
ADC6
ADC7
T2EX
CEX0
GPI0
GPI1
GPI2
GPI3
AD0
AD1
AD2
AD3
AD4
AD5
AD6
AD7
ECI
SS
T2
Notes
Automatic configuration
input-only
Automatic configuration
input-only
Automatic configuration
input-only
Automatic configuration
input-only
Automatic configuration
input-only
Automatic configuration
input-only
Automatic configuration
input-only
Automatic configuration
input-only
OSCB must be disabled or in
internal oscillator mode
(AT89LP51IC2)
REMAP = 0
I/O Mode
bidirectional (internal pull-up)
output
input
bidirectional (external pull-up)
3722A–MICRO–10/11