Microchip Technology, Inc. Microcontrollers PIC16F84A-20E/P

The PIC16F84A-20E/P is an 8-bit microcontroller featuring an enhanced FLASH/EEPROM architecture. It operates at a maximum clock speed of 20 MHz, with a 200 ns instruction cycle. The device includes 1K words of program memory, 68 bytes of data RAM, and 64 bytes of data EEPROM, supporting a variety of applications. It has 13 I/O pins with individual direction control and can source or sink up to 25 mA per pin, making it suitable for driving LEDs directly. This microcontroller supports multiple addressing modes and includes a hardware stack of eight levels, along with four interrupt sources. Special features include In-Circuit Serial Programming (ICSP), a watchdog timer, and power-saving modes. The device is designed for low power consumption, with typical operating currents of less than 2 mA at 5V and 4 MHz, and standby currents as low as 0.5 µA at 2V. The EEPROM has a data retention of over 40 years and supports 10,000,000 erase/write cycles. The PIC16F84A-20E/P is available in various package types, including PDIP and SOIC, making it versatile for different design requirements.