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AT89S51-24AU
+Lista de MateriaisIC MCU 8BIT 4KB FLASH 44TQFP
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FabricanteAtmel
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Peça do Fabricante #AT89S51-24AU
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Ficha Técnica AT89S51-24AU DataSheet
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Pacote TQFP-44
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Especificações
| Atributo | Valor |
| Package / Case | Bulk |
| Series | 89S |
| Part Status | Active |
| Core Processor | 8051 |
| Core Size | 8-Bit |
| Speed | 24MHz |
| Connectivity | UART/USART |
| Peripherals | WDT |
| Number of I/O | 32 |
| Program Memory Size | 4KB (4K x 8) |
| Program Memory Type | FLASH |
| RAM Size | 128 x 8 |
| Voltage - Supply (Vcc/Vdd) | 4V ~ 5.5V |
| Oscillator Type | Internal |
| Operating Temperature | -40°C ~ 85°C (TA) |
| Mounting Type | Surface Mount |
Visão Geral
Description
- 4KB Flash memory for program storage (ISP-capable).
- 128B RAM and 32 I/O pins for interfacing.
- 24MHz max clock speed (indicated by "24" in the part number).
- UART, timers, and interrupts for embedded control.
- Low-power idle/power-down modes.
The -AU suffix denotes a TQFP-44 package. It’s ideal for cost-sensitive, low-complexity projects like industrial control, automation, or legacy 8051 upgrades.
Key advantages: In-system programmability (ISP), 8051 compatibility, and robust peripherals. Limited by its older architecture (e.g., no built-in ADC).
For modern alternatives, consider AT89LP or enhanced 8051 variants.
Equivalent
1. AT89C51-24PU (DIP package, similar specs)
2. AT89LP51 (Low-power variant)
3. P89V51RD2 (NXP, higher flash memory)
4. STC89C52 (STC Micro, compatible but Chinese-made)
5. DS89C450 (Maxim, faster & enhanced features)
Check pin compatibility and voltage requirements before substitution. Most are MCS-51 architecture-based.
Features
- Architecture: 8051-based, 8-bit CPU
- Clock Speed: Up to 24 MHz
- Flash Memory: 4 KB (ISP programmable)
- RAM: 128 bytes
- I/O Pins: 32 (4 ports, 8-bit each)
- Timers: Three 16-bit (Timer 0, 1, and 2)
- Interrupts: Six sources, two priority levels
- Serial Communication: UART (full duplex)
- Power Supply: 4V–5.5V
- Package: 44-lead TQFP (AU suffix)
- Operating Temp: -40°C to +85°C
- ISP Support: In-System Programming via SPI
Ideal for embedded control applications due to its low cost, ease of use, and 8051 compatibility.
Pinout
- Pin Count: 40 (DIP or TQFP package)
- Core: 8-bit 8051 with 4KB ISP Flash memory
- I/O Ports: Four 8-bit ports (P0-P3) for general-purpose I/O
- Timers: Two 16-bit timers/counters
- Interrupts: Six interrupt sources
- Serial Communication: UART for serial data transfer
- Clock Speed: Up to 24MHz (indicated by "-24" in the part number)
- ISP Support: In-System Programming via SPI interface
Pins also include power supply (VCC, GND), reset (RST), and external memory control (EA, ALE, PSEN).
Application
- Industrial Control – Automation, sensor interfacing, and motor control.
- Consumer Electronics – Home appliances, remote controls, and smart devices.
- Automotive Systems – Dashboard controls and basic ECU functions.
- Medical Devices – Simple monitoring and diagnostic equipment.
- Educational Kits – Microcontroller training and prototyping.
Its features (4KB Flash, 128B RAM, UART, timers) make it suitable for cost-effective, low-power embedded solutions.
