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AT89LP51ED2 데이터시트 PDF




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기능 8-bit Microcontroller
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AT89LP51ED2 데이터시트, 핀배열, 회로
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 2KB Expanded RAM (ERAM)
• Software Selectable Size (0, 256, 512, 768, 1024, 1792, 2048 Bytes)
– Dual Data Pointers
– 4-level Interrupt Priority
Nonvolatile Program and Data Memory
– 64KB of In-System Programmable (ISP) Flash Program Memory
– 4KB of EEPROM (AT89LP51ED2/ID2 Only)
– 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 (AT89LP51ID2)
– 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 64KB
Program
Memory
AT89LP51RD2
AT89LP51ED2
AT89LP51ID2
Preliminary
Summary
3714AS–MICRO–7/11




AT89LP51ED2 pdf, 반도체, 판매, 대치품
Table 1-1. Atmel AT89LP51RD2/ED2/ID2 Pin Description
Pin Number
VQFP
VQFN PLCC
(1)
PDIP
Symbol
Type Description
16 22 20 GND
I Ground
17 23
P4.3
I/O P4.3: User-configurable I/O Port 4bit 3.
I/O DDA: Bidirectional Debug Data line for the On-Chip Debug Interface when OCD is enabled.
18
24
21
P2.0
I/O P2.0: User-configurable I/O Port 2 bit 0.
O A8: External memory interface Address bit 8.
19
25
22
P2.1
I/O P2.1: User-configurable I/O Port 2 bit 1.
O A9: External memory interface Address bit 9.
I/O P2.2: User-configurable I/O Port 2 bit 2.
20 26 23
P2.1
O DA-: DAC negative differential output.
O A10: External memory interface Address bit 10.
I/O P2.3: User-configurable I/O Port 2 bit 3.
21 27 24
P2.3
O DA+-: DAC positive differential output.
O A11: External memory interface Address bit 11.
I/O P2.4: User-configurable I/O Port 2 bit 5.
22 28 25 P2.4
I AIN0: Analog Comparator Input 0.
O A12: External memory interface Address bit 12.
I/O P2.5: User-configurable I/O Port 2 bit 5.
23 29 26 P2.5
I AIN1: Analog Comparator Input 1.
O A13: External memory interface Address bit 13.
I/O P2.6: User-configurable I/O Port 2 bit 6.
24 30 27 P2.6
I AIN2: Analog Comparator Input 2.
O A14: External memory interface Address bit 14.
I/O P2.7: User-configurable I/O Port 2 bit 7.
25 31 28 P2.7
I AIN3: Analog Comparator Input 3.
O A15: External memory interface Address bit 15.
26
32
29
P4.5
I/O P4.5: User-configurable I/O Port 4 bit 5.
O PSEN: External memory interface Program Store Enable (active-low).
27
33
30
P4.4
I/O P4.4: User-configurable I/O Port 4 bit 4.
I/O ALE: External memory interface Address Latch Enable.
28 34
P4.0
I/O
P4.0: User-configurable I/O Port 4 bit 0.
SCL: TWI Serial Clock line. This line is an output in mater mode and an input in slave mode.
29 35 31 POL
I POL: Reset polarity
30
36
32
P0.7
I/O P0.7: User-configurable I/O Port 0 bit 7.
I/O AD7: External memory interface Address/Data bit 7.
I/O P0.6: User-configurable I/O Port 0 bit 6.
31 37 33 P0.6 I/O AD6: External memory interface Address/Data bit 6.
I ADC6: ADC analog input 6.
I/O P0.5: User-configurable I/O Port 0 bit 5.
32 38 34 P0.5 I/O AD5: External memory interface Address/Data bit 5.
I ADC5: ADC analog input 5.
I/O P0.4: User-configurable I/O Port 0 bit 4.
33 39 35 P0.4 I/O AD4: External memory interface Address/Data bit 4.
I ADC4: ADC analog input 4.
I/O P0.3: User-configurable I/O Port 0 bit 3.
34 40 36 P0.3 I/O AD3: External memory interface Address/Data bit 3.
I ADC3: ADC analog input 3.
4 AT89LP51RD2/ED2/ID2 Summary - Preliminary
3714AS–MICRO–7/11

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AT89LP51ED2 전자부품, 판매, 대치품
AT89LP51RD2/ED2/ID2 Summary - Preliminary
2.1 Block Diagram
Figure 2-1. Atmel AT89LP51RD2/ED2/ID2 Block Diagram
Flash Code
64KB
Boot ROM
2KB
EEPROM
4KB
(AT89LP51ED2/ID2)
RAM
256 Bytes
ERAM
2KB
XRAM
Interface
8051 Single Cycle CPU
with 12-cycle Compatiblity
Crystal or
Resonator
Crystal or
Resonator
Port 0
Configurable I/O
Port 1
Configurable I/O
Port 2
Configurable I/O
Port 3
Configurable I/O
Port 4
Configurable I/O
Dual Analog
Comparators
Configurable
Oscillator A
Configurable
Oscillator B
(AT89LP51ID2)
Watchdog
Timer
Keyboard
Interface
Dual Data
Pointers
Multiply
Accumulate
(16 x 16)
POR
BOD
Internal 8 MHz
RC Oscillator
On-Chip
Debug
UART
SPI
Timer 0
Timer 1
Timer 2
PCA
10-bit
ADC/DAC
TWI
7
2.2 System Configuration
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.
2.2.1
Fuse Options
Table 2-1 lists the fusible options for the AT89LP51RD2/ED2/ID2. 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 the
datasheet.
3714AS–MICRO–7/11
7

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AT89LP51ED2

8-bit Microcontroller

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