Description

The P87C51RB2BA is a single-chip 8-bit microcontroller, belonging to the 80C51 microcontroller family. Manufactured using an advanced CMOS process, it offers compatibility with the 80C51 instruction set.

Specifications and features

• 80C51 Central Processing Unit
• 8 kbytes OTP (87C51RA2)
• 16 kbytes OTP (87C51RB2)
• 32 kbytes OTP (87C51RC2)
• 64 kbytes OTP (87C51RD2)
• 512 byte RAM (87C51RA2/RB2/RC2)
• 1 kbyte RAM (87C51RD2)
• Boolean processor
• Fully static operation
• Low voltage (2.7 V to 5.5 V at 16 MHz) operation
• 12-clock operation with selectable 6-clock operation (via software or via parallel programmer)
• Memory addressing capability - Up to 64 kbytes ROM and 64 kbytes RAM
• Power control modes: Clock can be stopped and resumed, Idle mode, Power-down mode
• CMOS and TTL compatible
• Two speed ranges at VCC = 5 V: 0 to 30 MHz with 6-clock operation, 0 to 33 MHz with 12-clock operation
• Parallel programming with 87C51 compatible hardware interface to programmer
• RAM expandable externally to 64 kbytes
• Programmable Counter Array (PCA): PWM, Capture/compare
• PLCC, LQFP, or DIP package
• Extended temperature ranges
• Dual Data Pointers
• Security bits (3 bits)
• Encryption array - 64 bytes
• Seven interrupt sources
• 4 interrupt priority levels
• Four 8-bit I/O ports
• Full-duplex enhanced UART: Framing error detection, Automatic address recognition
• Three 16-bit timers/counters T0, T1 (standard 80C51) and additional T2 (capture and compare)
• Programmable clock-out pin
• Asynchronous port reset
• Low EMI (inhibit ALE, slew rate controlled outputs, and 6-clock mode)
• Wake-up from Power Down by an external interrupt

Application Scenarios

The P87C51RB2BA microcontroller can be used in various applications such as industrial automation, consumer electronics, automotive electronics, and more. Its versatile features and compatibility make it suitable for a wide range of scenarios.

Comparison

• Compatibility with the 80C51 instruction set
• Wide range of memory addressing capability
• Low voltage operation for energy efficiency
• Multiple power control modes for flexible usage
• Enhanced security features
• Extensive peripheral options

No significant disadvantages were found for the P87C51RB2BA microcontroller model.