PIC16F84A-20I/SS Microchip Integrated Circuit (Small Outline Packages) In Stock
Microchip PIC16F84A-20I/SS is an 8-bit PIC16 microcontroller running at up to 20 MHz with Flash program memory, EEPROM data storage, and GPIO, packaged in a 20-pin SSOP for compact embedded control applications. Available worldwide with RoHS compliance.
- Manufacturer
- Microchip
- Package
- Small Outline Packages
- Pin Count
- 20
- Lifecycle
- ACTIVE
- Datasheet
- PIC16F84A-20I/SS Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 8-bit PIC16 architecture at up to 20 MHz with Flash program memory for easy field reprogramming
- On-chip EEPROM data memory enables non-volatile parameter storage without external memory devices
- Industrial-grade I variant rated from -40°C to +85°C for reliable operation in harsh environments
- 20-pin SSOP package (0.209 inch width) for space-constrained PCB designs with automated assembly
- ICSP (In-Circuit Serial Programming) support allows firmware updates without removing the MCU from the board
Applications
The PIC16F84A-20I/SS is a classic 8-bit microcontroller widely used in educational projects, hobbyist embedded systems, and legacy industrial control designs that require simple I/O management and small code footprints. Its Flash program memory and on-chip EEPROM make it suitable for keypad controllers, simple communication protocol handlers, and sensor polling loops where data retention across power cycles is essential. The 20-pin SSOP package and 20 MHz clock speed fit compact timer circuits, relay drivers, and appliance control modules where cost and PCB size are primary constraints.
Specifications
| Pbfree Code | Yes |
| Manufacturer Package Code | SSOP-20 |
| Factory Lead Time | 5Weeks |
| YTEOL | 8 |
| Has ADC | NO |
| Bit Size | 8 |
| Boundary Scan | NO |
| CPU Family | PIC16 |
| Clock Frequency-Max | 20MHz |
| DAC Channels | NO |
| DMA Channels | NO |
| Format | FIXED POINT |
| Integrated Cache | NO |
| JESD-30 Code | R-PDSO-G20 |
| JESD-609 Code | e3 |
| Low Power Mode | YES |
| Number of External Interrupts | 1 |
| Number of I/O Lines | 13 |
| Number of Timers | 3 |
| On Chip Data RAM Width | 8 |
| On Chip Program ROM Width | 14 |
| PWM Channels | NO |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SSOP20,.3 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, SHRINK PITCH |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| RAM (bytes) | 68 |
| ROM (words) | 1024 |
| ROM Programmability | FLASH |
| Screening Level | TS 16949 |
| Speed | 20MHz |
| Supply Current-Max | 20mA |
| Supply Voltage-Max | 5.5V |
| Supply Voltage-Min | 4.5V |
| Supply Voltage-Nom | 5V |
| Surface Mount | YES |
| Technology | CMOS |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.65mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 40 |
| uPs/uCs/Peripheral ICs Type | MICROCONTROLLER, RISC |
| ## PIC16F84A-20I/SS Alternates Showing results | Image |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.31.00.01 |
| Country of Origin | Thailand |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for PIC16F84A-20I/SS:
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Frequently Asked Questions
At what maximum clock frequency does the PIC16F84A-20I/SS operate, and what instruction throughput does that provide?
The PIC16F84A-20I/SS runs at a maximum clock of 20 MHz. Since the PIC16 core executes most instructions in 4 clock cycles, effective instruction throughput is 5 MIPS (million instructions per second). This is sufficient for relay control, keypad scanning, and serial communication at baud rates up to 9600 bps in firmware-driven UART implementations.
Does PIC16F84A-20I/SS include on-chip EEPROM and how many bytes are available for data retention?
Yes, the PIC16F84A-20I/SS includes 64 bytes of on-chip EEPROM data memory that retains values without power. This is useful for storing calibration constants, configuration settings, or event counters that must survive power cycling. The EEPROM endurance is rated for at least 1,000,000 write cycles, and data retention is guaranteed for 40 years at 25°C.
What temperature range does the PIC16F84A-20I/SS cover and which industrial deployment environments does this support?
The I-grade PIC16F84A-20I/SS is specified for operation from -40°C to +85°C. This covers industrial factory floor environments, outdoor control enclosures, and HVAC systems where ambient temperatures vary widely across seasons. It also covers most automotive non-underhood electronics and military-adjacent commercial applications requiring extended temperature reliability.
For a legacy replacement board using the PIC16F84A-20I/SS, how does the SSOP-20 package differ from the original DIP-18 version?
The SSOP-20 package used by PIC16F84A-20I/SS has a pin pitch of 0.65 mm and a body width of 0.209 inches (5.3 mm), compared to the through-hole DIP-18 with 2.54 mm pitch and 9.5 mm width. The SSOP version reduces PCB footprint by approximately 80% in area, requires surface-mount reflow assembly instead of wave soldering, and needs an adapter or custom footprint if replacing a DIP-18 socket on an existing legacy PCB.
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