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AT89LP51RB2 Datasheet(PDF) 8 Page - ATMEL Corporation

Part # AT89LP51RB2
Description  8-bit Microcontroller Compatible with 8051 Products
PDF  254 Pages
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Manufacturer  ATMEL [ATMEL Corporation]
Direct Link  http://www.atmel.com
Logo ATMEL - ATMEL Corporation

AT89LP51RB2 Datasheet(HTML) 8 Page - ATMEL Corporation

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3722A–MICRO–10/11
AT89LP51RB2/RC2/IC2 Preliminary
2.1
Block Diagram
Figure 2-1.
Atmel AT89LP51RB2/RC2/IC2 Block Diagram
2.2
System Configuration
The AT89LP51RB2/RC2/IC2 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 AT89LP51RB2/RC2/IC2 must be properly configured before correct operation can
occur.
2.2.1
Fuse Options
Table 2-1 lists the fusible options for the AT89LP51RB2/RC2/IC2. These options maintain their
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 188.
Flash Code
24/32 KB
Port 2
Configurable I/O
Port 1
Configurable I/O
UART
SPI
Timer 0
Timer 1
Watchdog
Timer
Crystal or
Resonator
Port 4
Configurable I/O
Port 3
Configurable I/O
Timer 2
Port 0
Configurable I/O
RAM
256 Bytes
XRAM
Interface
8051 Single Cycle CPU
with 12-cycle Compatiblity
POR
BOD
Dual Data
Pointers
Multiply
Accumulate
(16 x 16)
ERAM
1152 Bytes
Keyboard
Interface
PCA
Boot ROM
2KB
On-Chip
Debug
Internal 8 MHz
RC Oscillator
Configurable
Oscillator A
10-bit
ADC/DAC
TWI
7
Dual Analog
Comparators
Crystal or
Resonator
Configurable
Oscillator B
(AT89LP51IC2)



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