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Atmel Electronic Components Datasheet

AT89LP51RB2 Datasheet

8-bit Flash Microcontroller

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Features
8-bit Microcontroller Compatible with 8051 Products
Enhanced 8051 Architecture
– Single Clock Cycle per Byte Fetch
– 12 Clock per Machine Cycle Compatibility Mode
– Up to 20 MIPS Throughput at 20 MHz Clock Frequency
– Fully Static Operation: 0 Hz to 20 MHz
– On-chip 2-cycle Hardware Multiplier
– 16x16 Multiply–Accumulate Unit
– 256 x 8 Internal RAM
– On-chip 1152 Bytes Expanded RAM (ERAM)
• Software Selectable Size (0, 256, 512, 768, 1024 or 1152 Bytes)
– Dual Data Pointers
– 4-level Interrupt Priority
Nonvolatile Program and Data Memory
– 24KB/32KB of In-System Programmable (ISP) Flash Program Memory
– 512-byte User Signature Array
– Endurance: 10,000 Write/Erase Cycles
– Serial Interface for Program Downloading
– 2KB Boot ROM Contains Low Level Flash Programming Routines and a Default
Serial Bootloader
Peripheral Features
– Three 16-bit Enhanced Timer/Counters
– Seven 8-bit PWM Outputs
– 16-bit Programmable Counter Array
• High Speed Output, Compare/Capture
• Pulse Width Modulation, Watchdog Timer Capabilities
– Enhanced UART with Automatic Address Recognition and Framing
Error Detection
– Enhanced Master/Slave SPI with Double-buffered Send/Receive
Two Wire Interface 400K bit/s
– Programmable Watchdog Timer with Software Reset
– 8 General-purpose Interrupt and Keyboard Interface Pins
Special Microcontroller Features
– Dual Oscillator Support: Crystal, 32 kHz Crystal, 8 MHz Internal (AT89LP51IC2)
– Two-wire On-Chip Debug Interface
– Brown-out Detection and Power-on Reset with Power-off Flag
– Selectable Polarity External Reset Pin
– Low Power Idle and Power-down Modes
– Interrupt Recovery from Power-down Mode
– 8-bit Clock Prescaler
I/O and Packages
– Up to 40 Programmable I/O Lines
– Green (Pb/Halide-free) PLCC44, VQFP44, QFN44. PDIP40
– Configurable I/O Modes
• Quasi-bidirectional (80C51 Style), Input-only (Tristate)
• Push-pull CMOS Output, Open-drain
Operating Conditions
– 2.4V to 5.5V VCC Voltage Range
– -40° C to 85°C Temperature Range
– 0 to 20 MHz @ 2.4V–5.5V (Single-cycle)
8-bit Flash
Microcontroller
with 24K/32K
bytes Program
Memory
AT89LP51RB2
AT89LP51RC2
AT89LP51IC2
Preliminary
3722A–MICRO–10/11


Atmel Electronic Components Datasheet

AT89LP51RB2 Datasheet

8-bit Flash Microcontroller

No Preview Available !

1. Pin Configurations
1.1 44-lead TQFP/LQFP
(†MOSI/CEX2/MISO) P1.5
(†MISO/CEX3/SCK) P1.6
(†SCK/CEX4/MOSI) P1.7
(DCL) RST
(RXD) P3.0
(SDA) P4.1
(TXD) P3.1
(INT0) P3.2
(INT1) P3.3
(T0) P3.4
(T1) P3.5
1
2
3
4
5
6
7
8
9
10
11
† SPI in remap mode
‡ AT89LP51ID2 Only
1.2 44-lead PLCC
33 P0.4 (AD4)
32 P0.5 (AD5)
31 P0.6 (AD6)
30 P0.7 (AD7)
29 POL
28 P4.0 (SCL)
27 P4.4 (ALE)
26 P4.5 (PSEN)
25 P2.7 (A15/AIN3)
24 P2.6 (A14/AIN2)
23 P2.5 (A13/AIN1)
(†MOSI/CEX2/MISO) P1.5
(†MISO/CEX3/SCK) P1.6
(†SCK/CEX4/MOSI) P1.7
(DCL) RST
(RXD) P3.0
(SDA) P4.1
(TXD) P3.1
(INT0) P3.2
(INT1) P3.3
(T0) P3.4
(T1) P3.5
7
8
9
10
11
12
13
14
15
16
17
† SPI in remap mode
‡ AT89LP51ID2 Only
39 P0.4 (AD4)
38 P0.5 (AD5)
37 P0.6 (AD6)
36 P0.7 (AD7)
35 POL
34 P4.0 (SCL)
33 P4.4 (ALE)
32 P4.5 (PSEN)
31 P2.7 (A15/AIN3)
30 P2.6 (A14/AIN2)
29 P2.5 (A13/AIN1)
2 AT89LP51RB2/RC2/IC2 Preliminary
3722A–MICRO–10/11


Part Number AT89LP51RB2
Description 8-bit Flash Microcontroller
Maker ATMEL
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AT89LP51RB2 Datasheet PDF






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