Embedded - Microcontrollers 40-DIP (0.600, 15.24mm) 0°C~70°C TA 4V~6V 89C 8-BIT, FLASH, 8051 CPU, 24MHZ The AT89C51 is a low-power, high-performance CMOS 8-bit microcomputer This post will unlock more details about AT89C51.
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Oct 23, 2021
Sampson Hope
How to Program 8051 ICs of ATMEL (2/3)
Embedded - Microcontrollers 40-DIP (0.600, 15.24mm) 0°C~70°C TA 4V~6V 89C 8-BIT, FLASH, 8051 CPU, 24MHZ
The AT89C51 is a low-power, high-performance CMOS 8-bit microcomputer This post will unlock more details about AT89C51. There is a huge range of Semiconductors, Capacitors, Resistors and ICs in stock. Welcome RFQ.
AT89C51-24PC
AT89C51 Pinout
Pin description is shown below:
|
Pin Number |
Pin Name |
Description |
|
1 |
P1.0 |
0th pin of PORT P1 |
|
2 |
P1.1 |
1st pin of PORT P1 |
|
3 |
P1.2 |
2nd pin of PORT P1 |
|
4 |
P1.3 |
3rd pin of PORT P1 |
|
5 |
P1.4 |
4th pin of PORT P1 |
|
6 |
P1.5 |
5th pin of PORT P1 |
|
7 |
P1.6 |
6th pin of PORT P1 |
|
8 |
P1.7 |
7th pin of PORT P1 |
|
9 |
RST |
Reset pin of the Microcontroller |
|
10 |
(RXD) P3.0 |
0th pin of PORT P3 or Receiver pin of Microcontroller |
|
11 |
(TXD) P3.1 |
1st pin of PORT P3 or Transmitter pin of Microcontroller |
|
12 |
(INT0) P3.2 |
2nd pin of PORT P3 or External Interrupt 0 of MCU |
|
13 |
(INT1) P3.3 |
3rd pin of PORT P3 or External Interrupt 1 of MCU |
|
14 |
(T0) P3.4 |
4th pin of PORT P3 or Timer 0 interrupt of MCU |
|
15 |
(T1) P3.5 |
5th pin of PORT P3 or Timer 1 interrupt of MCU |
|
16 |
(WR) P3.6 |
6th pin of PORT P3 or Write to External data memory pin |
|
17 |
(RD) P3.7 |
7th pin of PORT P3 or Read from External data memory pin |
|
18 |
XTAL2 |
External crystal pin 2 of Microcontroller |
|
19 |
XTAL1 |
External crystal pin 1 of Microcontroller |
|
20 |
GND |
Ground pin of MCU |
|
21 |
P2.0(A8) |
0th pin of PORT P2 or High-order Address bit 8 of MCU |
|
22 |
P2.1(A9) |
1st pin of PORT P2 or High-order Address bit 9 of MCU |
|
23 |
P2.2(A10) |
2nd pin of PORT P2 or High-order Address bit 10 of MCU |
|
24 |
P2.3(A11) |
3rd pin of PORT P2 or High-order Address bit 11 of MCU |
|
25 |
P2.4(A12) |
4th pin of PORT P2 or High-order Address bit 12 of MCU |
|
26 |
P2.5(A13) |
5th pin of PORT P2 or High-order Address bit 13 of MCU |
|
27 |
P2.6(A14) |
6th pin of PORT P2 or High-order Address bit 14 of MCU |
|
28 |
P2.7(A15) |
7th pin of PORT P2 or High-order Address bit 15 of MCU |
|
29 |
PSEN |
Program store enable pin, Read external program memory |
|
30 |
ALE/PROG |
Address Latch Enable/ Program Pulse input for flashing |
|
31 |
EA/VPP |
Access Enable voltage/Program enable voltage |
|
32 |
P0.7(AD7) |
7th pin of PORT P0 or Low-order Address bit 7 of MCU |
|
33 |
P0.6(AD6) |
6th pin of PORT P0 or Low -order Address bit 6 of MCU |
|
34 |
P0.5(AD5) |
6th pin of PORT P0 or Low -order Address bit 5 of MCU |
|
35 |
P0.4(AD4) |
6th pin of PORT P0 or Low -order Address bit 4 of MCU |
|
36 |
P0.3(AD3) |
3rd pin of PORT P0 or Low -order Address bit 3 of MCU |
|
37 |
P0.2(AD2) |
2nd pin of PORT P0 or Low -order Address bit 2 of MCU |
|
38 |
P0.1(AD1) |
1st pin of PORT P0 or Low -order Address bit 1 of MCU |
|
39 |
P0.0(AD0) |
0th pin of PORT P0 or Low -order Address bit 0 of MCU |
|
40 |
Vcc |
Supply pin of MCU |
AT89C51 Symbol
3D Model
AT89C51 3D Model
The AT89C51 is a low-power, high-performance CMOS 8-bit microcomputer with 4K bytes of Flash programmable and erasable read-only memory (PEROM). The device is manufactured using Atmel’s high-density nonvolatile memory technology and is compatible with the industry-standard MCS-51 instruction set and pinout. The on-chip Flash allows the program memory to be reprogrammed in-system or by a conventional nonvolatile memory programmer. By combining a versatile 8-bit CPU with Flash on a monolithic chip, the Atmel AT89C51 is a powerful microcomputer that provides a highly-flexible and cost-effective solution to many embedded control applications.
• Compatible with MCS-51™ Products
• 4K Bytes of In-System Reprogrammable Flash Memory – Endurance: 1,000 Write/Erase Cycles
• Fully Static Operation: 0 Hz to 24 MHz
• Three-level Program Memory Lock
• 128 x 8-bit Internal RAM
• 32 Programmable I/O Lines • Two 16-bit Timer/Counters
• Six Interrupt Sources
• Programmable Serial Channel
• Low-power Idle and Power-down Modes
Multiple DIY Projects
Very good choice if you are learning ATmel
Projects requiring Multiple I/O interfaces and communications
Replacement for Arduino Module
Ideal for more advanced level A/D applications in automotive, industrial, appliances and consumer applications
AT89C51 Block Diagram
How to Program the AT89C51 Microcontroller
The Atmel microcontroller can be programmed using a variety of software available on the market. The most popular platforms are Arduino and Keil µVision, to mention a few. Keil is recommended if you want to do serious programming and expand with community help.
To program the Atmel microcontroller, we'll need an IDE (Integrated Development Environment), which acts as a programming environment. A compiler converts our software into HEX files, which can be read by MCUs. Our hex file is dumped into our MCUs using an IPE (Integrated Programming Environment).
IDE: Keil µVision IDE
Programming Hardware: MAX232 with RS232 to USB converter
Programmer: USBASP
A programmer is required to dump or upload our code into an Atmel IC; the most often used programmer is the USBASP, which must be purchased separately. Simulating your program in software before attempting it on hardware will also save you time. As a result, you can simulate your applications using software such as Labcenter's ISIS proteus.
AT89C51 Programming circuit is shown below:
AT89C51 Programming circuit
Rochester Electronics, LLC AT89C51-24PC technical specifications, attributes, parameters and parts with similar specifications to Rochester Electronics, LLC AT89C51-24PC.
| Product Attribute | Attribute Value | |
|---|---|---|
| Mounting Type | Through Hole | |
| Package / Case | 40-DIP (0.600, 15.24mm) | |
| Supplier Device Package | 40-PDIP | |
| Number of I/Os | 32I/Os | |
| Operating Temperature | 0°C~70°C TA | |
| Packaging | Tube | |
| Series | 89C |
| Product Attribute | Attribute Value | |
|---|---|---|
| Part Status | Obsolete | |
| Moisture Sensitivity Level (MSL) | 3 (168 Hours) | |
| Oscillator Type | Internal | |
| Speed | 24MHz | |
| RAM Size | 128 x 8 | |
| Voltage - Supply (Vcc/Vdd) | 4V~6V | |
| Core Processor | 80C51 |
| Product Attribute | Attribute Value | |
|---|---|---|
| Program Memory Type | FLASH | |
| Core Size | 8-Bit | |
| Program Memory Size | 4KB 4K x 8 | |
| Connectivity | UART/USART | |
| RoHS Status | Non-RoHS Compliant |
Download datasheets and manufacturer documentation for AT89C51-24PC
AT89C51 Package
Rochester Electronics ranks as a global leading semiconductor provider. Due to their products' characteristics of high quality and durability, these products are suitable for long-term production and maintenance in the fields of industry, transportation and high-reliability markets. Their large inventory includes more than 100,000 products and 15 billion units, making them exceed other companies in terms of selection, capabilities, or solutions.
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