PIC16LF628-04/SO Microchip Integrated Circuit (Small Outline Packages) In Stock
Microchip PIC16LF628-04/SO is an 8-bit PIC microcontroller running at up to 4MHz with 2KB Flash, 224 bytes SRAM, 16 I/O pins, USART, comparators, and 2V to 5.5V operation in an 18-pin SOIC package.
- Manufacturer
- Microchip
- Package
- Small Outline Packages
- Pin Count
- 18
- Lifecycle
- NOT RECOMMENDED
- Datasheet
- PIC16LF628-04/SO Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $2.1210(MOQ 1)
- Temp Range
- ?°C to 70.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Low-power 8-bit PIC16 core running at 4MHz with 2KB Flash and 224 bytes SRAM for cost-sensitive embedded control
- Wide supply range 2V to 5.5V enabling direct battery operation from two AA cells or regulated 3.3V/5V rails
- On-chip analog comparators and USART providing analog sensing and serial communication without external components
- 18-pin SOIC package (1.27mm pitch) combining easy PCB assembly with a compact 11.5mm x 7.5mm footprint
Applications
The PIC16LF628-04/SO is well suited for simple consumer appliances, home automation relay controllers, and low-power sensor nodes where an 8-bit MCU at 4MHz is sufficient for sequential logic and UART communication. Its 2V minimum supply allows direct coin-cell or two-AA battery operation in remote controls, door locks, and HVAC thermostats. The 18-pin SOIC package and mature PIC16 ecosystem reduce BOM cost and simplify firmware development with the free MPLAB IDE and XC8 compiler.
Specifications
| Pbfree Code | Yes |
| Manufacturer Package Code | SOIC-18 |
| Factory Lead Time | 5Weeks |
| Date Of Intro | 1999-06-07 |
| YTEOL | 3 |
| Has ADC | NO |
| Bit Size | 8 |
| Boundary Scan | NO |
| CPU Family | PIC16 |
| Clock Frequency-Max | 4MHz |
| DAC Channels | NO |
| DMA Channels | NO |
| Format | FIXED POINT |
| Integrated Cache | NO |
| JESD-30 Code | R-PDSO-G18 |
| JESD-609 Code | e3 |
| Low Power Mode | YES |
| Number of External Interrupts | 1 |
| Number of I/O Lines | 16 |
| Number of Serial I/Os | 1 |
| Number of Timers | 3 |
| On Chip Data RAM Width | 8 |
| On Chip Program ROM Width | 14 |
| PWM Channels | YES |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOP18,.4 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Qualification Status | Not Qualified |
| RAM (bytes) | 224 |
| ROM (words) | 2048 |
| ROM Programmability | FLASH |
| Speed | 4MHz |
| Supply Current-Max | 7mA |
| Supply Voltage-Max | 5.5V |
| Supply Voltage-Min | 5V |
| Supply Voltage-Nom | 5V |
| Surface Mount | YES |
| Technology | CMOS |
| Temperature Grade | COMMERCIAL |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | GULL WING |
| Terminal Pitch | 1.27mm |
| Terminal Position | DUAL |
| uPs/uCs/Peripheral ICs Type | MICROCONTROLLER, RISC |
| 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 PIC16LF628-04/SO:
RISC Microcontroller, 8-Bit, FLASH, PIC16 CPU, 4MHz, CMOS, PDSO20
Frequently Asked Questions
What is the maximum clock speed of the PIC16LF628-04/SO and which oscillator modes does it support?
The PIC16LF628-04/SO runs at a maximum of 4MHz using its internal 4MHz RC oscillator, or externally with XT, HS, or LP crystal modes. The internal oscillator eliminates an external crystal and two load capacitors, saving board space and BOM cost in space-constrained applications such as remote-control modules and small relay controllers.
Can the PIC16LF628-04/SO operate from a 3V lithium coin cell, and how does its supply range compare to standard 5V PIC variants?
Yes, the PIC16LF628-04/SO operates from 2V to 5.5V, making it fully compatible with a 3V CR2032 coin cell or two-AA alkaline cells. Standard PIC16F devices typically require 4V to 5.5V, so the LF variant extends battery life in wireless sensors and medical wearables by operating at lower supply voltages where the higher-voltage parts would stop functioning.
For a simple RS-232 gateway project, does the PIC16LF628-04/SO provide built-in USART hardware?
Yes, the PIC16LF628-04/SO includes a full hardware USART supporting asynchronous serial communication at standard baud rates up to 115,200 baud. Combined with a single MAX232 level-shifter IC, it implements a complete UART-to-RS-232 bridge, suitable for 4MHz applications such as embedded serial terminals, barcode scanner interfaces, and meter-reading modules.
How many I/O pins does the PIC16LF628-04/SO provide and are any multiplexed with analog comparator inputs?
The PIC16LF628-04/SO provides 16 general-purpose I/O pins across PORTA and PORTB. Four PORTA pins (RA0–RA3) are multiplexed as inputs to the two on-chip analog comparators, allowing voltage comparison up to VDD without an external op-amp. When comparators are disabled, all 16 pins are available as digital I/O, giving full flexibility for relay-drive, keypad-scan, and LED-control tasks.
When should a designer choose the PIC16LF628-04/SO over the higher-speed PIC16F628A for a battery-powered application?
The PIC16LF628-04/SO is the better choice when the application must run from a supply below 4V — such as two AA batteries discharging to 2V — because the standard PIC16F628A requires at least 4V. At 4MHz and 3V, the LF device also draws significantly less active current (typically under 2mA versus 4mA for the 20MHz F variant), extending battery life by 50% or more in duty-cycled sensor applications.
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| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $2.8280 | $2.83 |
| 3+ | $2.1210 | $6.36 |
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