Altera S87C511

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Product attributes Property Value
Manufacturer Altera
Product Series
Packaging Bulk |
Core Processor MCS 51
Core Size 8-Bit
Speed 16MHz
Connectivity Serial Port
Peripherals POR
Number of I/O 32
Program Memory Size 4KB (4K x 8)
Program Memory Type EPROM
EEPROM Size -
RAM Size 128 x 8
Voltage - Supply (Vcc/Vdd) 4V ~ 6V
Data Converters -
Oscillator Type External, Internal
Operating Temperature 0°C ~ 70°C (TA)
Grade -
Qualification AEC -
Mounting Type Surface Mount
Supplier Device Package 44-QFP
Package / Case 44-QFP

The S87C511 from Altera is an 8-bit microcontroller based on the MCS 51 core. It operates at 16MHz with a supply voltage of 4V to 6V, featuring 4KB program memory and 128B RAM. With POR support and a 44-QFP package, it is designed for cost-sensitive applications requiring basic control from 0°C to 70°C.

  • Proven 8051 architecture: Extensive documentation and code examples reduce development time.
  • Wide supply tolerance: 4V to 6V simplifies 5V system integration.
  • Compact 44-QFP: Suitable for space-limited designs with moderate I/O needs.
  • Low cost: Ideal for high-volume consumer products with basic control requirements.

Legacy Industrial Controllers

The 8051 architecture is widely understood, making it easy to maintain existing PLC or relay logic systems.

Simple Motor Drives

With 16MHz speed and POR, it can generate basic PWM signals for small DC motors in toys or pumps.

Educational Kits

Its simple instruction set and 4KB flash are ideal for teaching microcontroller fundamentals in universities.

Low-Cost Consumer Electronics

The 4V-6V range allows direct connection to 5V logic without level shifters in remote controls or timers.

Retro Computing Peripherals

Compatible with legacy 8051 code, it can replace obsolete parts in vintage computer keyboards or printers.

Automotive Aftermarket

0°C to 70°C range suits non-critical cabin electronics like window lift controllers.

Q: What is the core architecture?
A: It uses the MCS 51 (8051) core at 16MHz.
Q: What is the supply voltage?
A: It operates from 4V to 6V.
Q: How much program memory is available?
A: It has 4KB of program memory.
Q: What is the RAM size?
A: It includes 128 bytes of RAM.
Q: What package is this?
A: It comes in a 44-QFP package.
Base Product Number : S87C511
128B RAM 16MHz 44-QFP 4KB flash 5V 8-bit MCU 8051 consumer industrial legacy MCS 51 POR
Q: What is the core architecture?
A: It uses the MCS 51 (8051) core at 16MHz.
Q: What is the supply voltage?
A: It operates from 4V to 6V.
Q: How much program memory is available?
A: It has 4KB of program memory.
Q: What is the RAM size?
A: It includes 128 bytes of RAM.
Q: What package is this?
A: It comes in a 44-QFP package.