Atmel AT87C52X2S278-RLTUM
| Quantity | Unit Price | Total Price |
|---|---|---|
| 1 | $20.68 | $20.68 |
| 15+ | $4.76 | $71.40 |
| 25+ | $4.65 | $116.25 |
| 50+ | $4.39 | $219.50 |
| 100+ | $3.88 | $388.00 |
| N+ | $0.78 | Price Inquiry |
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| Product attributes | Property Value |
| Manufacturer | Atmel |
| Product Series | 87C |
| Packaging | Bulk | |
| Core Processor | 80C51 |
| Core Size | 8-Bit |
| Speed | 40/20MHz |
| Connectivity | UART/USART |
| Peripherals | POR |
| Number of I/O | 32 |
| Program Memory Size | 8KB (8K x 8) |
| Program Memory Type | OTP |
| EEPROM Size | - |
| RAM Size | 256 x 8 |
| Voltage - Supply (Vcc/Vdd) | 4.5V ~ 5.5V |
| Data Converters | - |
| Oscillator Type | Internal |
| Operating Temperature | -40°C ~ 85°C (TA) |
| Grade | - |
| Qualification AEC | - |
| Mounting Type | Surface Mount |
| Supplier Device Package | 44-VQFP (10x10) |
| Package / Case | 44-LQFP |
The Atmel AT87C52X2S278-RLTUM is a classic 8-bit microcontroller based on the 80C51 core, operating at up to 40MHz (or 20MHz in X2 mode). It features 8KB of OTP program memory and 256 bytes of RAM, packaged in a 44-LQFP. With a supply voltage of 4.5V to 5.5V and an operating temperature range of -40°C to 85°C, it is designed for legacy and cost-sensitive applications requiring proven reliability.
- 5V operation: Direct interface with legacy TTL logic and relays.
- 40MHz 80C51 core: High-speed 8-bit processing for time-critical tasks.
- 8KB OTP: Secure, non-modifiable code for fixed-function products.
- 44-LQFP: Compact footprint with adequate I/O for control applications.
Legacy Industrial Controllers
Drop-in replacement for classic 8051 designs, maintaining 5V logic compatibility and 40MHz throughput.
Simple Motor Drivers
8KB OTP is sufficient for fixed-function PWM control, and the 80C51 core provides deterministic timing.
Consumer Appliances
Cost-effective 8-bit solution for washing machines, microwaves, and air conditioners with basic user interfaces.
Automotive Aftermarket Modules
5V operation and -40°C to 85°C range suit retrofit lighting and sensor modules.
Educational Kits
Classic architecture ideal for teaching embedded systems fundamentals with simple peripherals.
Power Supply Monitoring
POR ensures safe startup, and the 44-pin package offers enough I/O for voltage/current monitoring.
- Q: What is the core architecture?
- A: 80C51 8-bit core.
- Q: What is the maximum clock speed?
- A: 40MHz (or 20MHz in X2 mode).
- Q: How much program memory is available?
- A: 8KB OTP ROM.
- Q: What is the supply voltage?
- A: 4.5V to 5.5V.
- Q: What package is offered?
- A: 44-LQFP.
AT87C52X2S278-RLTUM.pdf
- Q: What is the core architecture?
- A: 80C51 8-bit core.
- Q: What is the maximum clock speed?
- A: 40MHz (or 20MHz in X2 mode).
- Q: How much program memory is available?
- A: 8KB OTP ROM.
- Q: What is the supply voltage?
- A: 4.5V to 5.5V.
- Q: What package is offered?
- A: 44-LQFP.
