PIC16F636-I/ML Microchip Integrated Circuit (Quad Flat No-Lead) In Stock
The PIC16F636-I/ML is an 8-bit PIC16 MCU with 3.5 KB Flash, 256 bytes EEPROM, 128 bytes RAM, up to 20 MHz clock, and a 4 MHz operation at 2 V minimum supply in a VQFN-16 package. Suited for low-power portable applications.
- Manufacturer
- Microchip
- Package
- Quad Flat No-Lead
- Pin Count
- 16
- Lifecycle
- ACTIVE
- Datasheet
- PIC16F636-I/ML Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $1.4300(MOQ 1)
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 3.5 KB Flash and 256 bytes EEPROM in an ultra-compact VQFN-16 package, enabling firmware plus non-volatile data storage in under 4 mm × 4 mm footprint
- Operates from as low as 2 V supply at 4 MHz, making it ideal for single-cell or 2-cell alkaline battery-powered designs
- Up to 20 MHz clock speed with PIC16 core provides efficient code execution for timer-based, communication, and control tasks
Applications
The PIC16F636-I/ML is ideal for low-power consumer and IoT devices such as smart keychain remotes, wireless sensor nodes, and portable medical accessories where the 2 V minimum supply allows the MCU to run down a battery to near-depletion. Its 256 bytes of EEPROM enable persistent parameter storage for device configuration without external memory, and the VQFN-16 package minimizes PCB area in compact wearable or coin-cell powered designs.
Specifications
| Pbfree Code | Yes |
| Manufacturer Package Code | VQFN-16 |
| Factory Lead Time | 6Weeks |
| YTEOL | 9 |
| Has ADC | NO |
| Additional Feature | ALSO OPERATES BY 2V MINIMUM SUPPLY AT 4 MHZ |
| 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 | S-PQCC-N16 |
| JESD-609 Code | e3 |
| Low Power Mode | YES |
| Number of External Interrupts | 1 |
| Number of I/O Lines | 12 |
| Number of Timers | 5 |
| On Chip Data RAM Width | 8 |
| On Chip Program ROM Width | 8 |
| PWM Channels | NO |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | LCC16,.16SQ,25 |
| Package Shape | SQUARE |
| Package Style | CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| RAM (bytes) | 128 |
| ROM (words) | 3584 |
| ROM Programmability | FLASH |
| Screening Level | TS 16949 |
| Speed | 20MHz |
| Supply Current-Max | 3.25mA |
| 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 | NO LEAD |
| Terminal Pitch | 0.65mm |
| Terminal Position | QUAD |
| Time@Peak Reflow Temperature-Max (s) | 40 |
| uPs/uCs/Peripheral ICs Type | MICROCONTROLLER, RISC |
| Package | Quad Flat No-Lead |
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
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the minimum supply voltage at which the PIC16F636-I/ML can operate, and at what clock speed?
The PIC16F636-I/ML can operate from a minimum supply voltage of 2 V while running at up to 4 MHz. This low-voltage capability allows the MCU to continue functioning near the end of a single-cell alkaline or NiMH battery discharge cycle, extending product runtime compared to devices that require 2.7 V or more to start.
How much non-volatile storage does the PIC16F636-I/ML provide, and how is it typically used?
The device includes 3.5 KB of Flash program memory and 256 bytes of data EEPROM, plus 128 bytes of SRAM. The EEPROM is commonly used to store calibration constants, device serial numbers, usage counters, or user-configurable parameters that must survive power cycling without the cost or complexity of an external serial EEPROM component.
For a coin-cell powered remote-control design, why is the PIC16F636-I/ML a strong candidate versus a 28-pin PIC16 device?
The VQFN-16 package occupies roughly 4 mm × 4 mm of PCB area compared to a 28-pin SOIC or DIP that can exceed 18 mm in length. Combined with the 2 V operating capability and deep-sleep modes drawing microampere-level quiescent current, the PIC16F636-I/ML fits into a coin-cell remote PCB that must last over 12 months on a CR2032 cell rated at 220 mAh.
Does the PIC16F636-I/ML include an analog-to-digital converter, and what alternatives exist within the PIC16F6xx family?
The PIC16F636-I/ML does not integrate an ADC. For applications requiring analog signal conversion, the PIC16F676 is a pin-compatible alternative that adds an 8-channel 10-bit ADC while maintaining the same 3.5 KB Flash, 256-byte EEPROM, 128-byte RAM, and VQFN-16 footprint, enabling a straightforward board-level swap when sensor-input capability is needed.
Related Guides
CL31A107MQHNNNE 1206 100 uF MLCC Selection Guide
How to choose CL31A107MQHNNNE and related 1206 MLCCs for low-voltage bulk capacitance and regulator stability.
Jul 2, 2026
CL05B103KB5NNNC 0402 10 nF X7R MLCC Selection Guide
How to choose CL05B103KB5NNNC and related 0402 MLCCs for bypassing, filtering, voltage derating, and sourcing.
Jul 2, 2026
ADAQ7768-1 Design Guide for Precision Vibration and Dynamic Signal Measurement
Design ADAQ7768-1 precision data acquisition channels for vibration and dynamic sensing with the right bandwidth, reference, clock, and layout choices.
Jun 30, 2026
AD5204BRZ10 Design Guide for SPI-Controlled Gain and Offset Calibration
Design AD5204BRZ10 digital potentiometer calibration loops with bounded trim span, safe wiper current, clean SPI routing, and reliable startup codes.
Jun 30, 2026
Why Buy from FindMyChip
About Microchip
Microchip is a leading electronic component manufacturer. FindMyChip sources Microchip ICs directly from authorized China distributors, offering competitive pricing and reliable stock.
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $1.9700 | $1.97 |
| 100+ | $1.6300 | $163.00 |
| 1000+ | $1.4900 | $1490.00 |
| 5000+ | $1.4300 | $7150.00 |
In Stock · 24h Response · Worldwide Shipping
Response within 24 hours · Worldwide shipping
“FindMyChip sourced our entire STM32 BOM in 48 hours when our usual distributor had 16-week lead times.”