AT89LP51ED2 Atmel Corporation, AT89LP51ED2 Datasheet - Page 8
AT89LP51ED2
Manufacturer Part Number
AT89LP51ED2
Description
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
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2.1
2.2
2.2.1
8
Block Diagram
System Configuration
AT89LP51RD2/ED2/ID2 Preliminary
Fuse Options
Figure 2-1.
The AT89LP51RD2/ED2/ID2 supports several system configuration options. Nonvolatile options
are set through user fuses that must be programmed through the flash programming interface.
Volatile options are controlled by software through individual bits of special function registers
(SFRs). The AT89LP51RD2/ED2/ID2 must be properly configured before correct operation can
occur.
Table 2-1
state even when the device is powered off. Some may be changed through the Flash API but
others can only be changed with an external device programmer. For more information, see
Section 24.2 “User Configuration Fuses” on page
Resonator
Resonator
Crystal or
Crystal or
lists the fusible options for the AT89LP51RD2/ED2/ID2. These options maintain their
Atmel AT89LP51RD2/ED2/ID2 Block Diagram
Configurable I/O
Configurable I/O
Flash Code
Configurable I/O
Configurable I/O
Configurable I/O
Configurable
Configurable
Comparators
Dual Analog
Oscillator A
Oscillator B
(AT89LP51ID2)
64KB
Port 0
Port 1
Port 2
Port 3
Port 4
Boot ROM
2KB
8051 Single Cycle CPU
(AT89LP51ED2/ID2)
EEPROM
with 12-cycle Compatiblity
4KB
Internal 8 MHz
RC Oscillator
Accumulate
Watchdog
Dual Data
Keyboard
190.
Interface
(16 x 16)
On-Chip
Pointers
Multiply
Debug
Timer
POR
BOD
256 Bytes
RAM
ERAM
2KB
ADC/DAC
Timer 0
Timer 1
Timer 2
UART
10-bit
PCA
Interface
SPI
TWI
XRAM
3714A–MICRO–7/11
7
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