PIC16LC716T-04I/SO - 4MHz 8-bit PIC MCU, 3.5KB OTP, SOIC-18 | Microchip
MPN: PIC16LC716T-04I/SO β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.51 | $1.51 |
| 10 | $1.4 | $14.00 |
| 100 | $1.26 | $126.00 |
| 500 | $1.15 | $575.00 |
| 1,000 | $1.05 | $1,050.00 |
PIC16LC716T-04I/SO Overview
An 8-bit PIC microcontroller (MCU) is a single-chip computer that combines a CPU, program memory, RAM, peripherals and I/O on one die. The PIC16 family uses a Harvard RISC architecture where most instructions execute in a single 4-clock cycle. MCUs sit at the lowest tier of the embedded hierarchy: microcontroller -> microprocessor -> compute platform -> semiconductor -> electronic component, and they are the foundation of virtually every sensor node, motor control loop, and human-machine interface produced today.
Key features include 13 digital I/O lines, two 8-bit timers plus one 16-bit timer, a 4-channel 8-bit analog-to-digital converter, and an asynchronous serial interface via the USART (TX/CK and RX/DT pins). The 'I' suffix denotes the industrial -40C to +85C operating temperature range. The wide VDD window of 2.5Vβ5.5V lets the same part power from two AA cells or a regulated 5V rail.
The PIC16LC716 architecture pairs a 14-bit instruction word with an 8-bit data path; the OTP program memory holds 2K x 14 (3.5KB) of firmware and the separate 128-byte data RAM retains run-time variables. The ADC uses successive approximation with a dedicated conversion clock; the CCP module can be configured for capture, compare or PWM for motor and lighting control.
Typical applications include battery chargers, small appliance controllers, sensor signal conditioning, LED driver logic, and automotive body electronics where the industrial temperature grade is sufficient. Designers frequently pair the PIC16LC716T-04I/SO with the PICkit programmer for in-circuit firmware development and ICSP (In-Circuit Serial Programming).
A primary design trade-off is OTP memory: once programmed, the firmware cannot be re-flashed. For prototype or field-updateable designs, evaluate the flash-based PIC16F716 in the same 18-pin SOIC. Pin 1 marking follows SOIC convention, with the notch at the top-left and pin 1 at the lower-left when reading the device top-mark down.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
Drop-in alternatives for PIC16LC716T-04I/SO β same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with PIC16LC716T-04I/SO (same form factor and footprint) β differing in Operating Temperature, RoHS Status, Timers, ADC, Package.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
PIC16LC716-04I/SO
β Drop-Inπ Reference alternative (not in catalog)
PIC16LC716T-04/SO
β Drop-Inπ Reference alternative (not in catalog)
PIC16LC716-04/SO
β Drop-Inπ Reference alternative (not in catalog)
PIC16F716-I/SO
β Drop-Inπ Reference alternative (not in catalog)
PIC16F716T-I/SO
β Drop-Inβ In Stock
$1.05 / Unit
View Datasheet βPIC16LC711-04I/SO
β Drop-Inβ In Stock
$3.78 / Unit
View Datasheet βPIC16LC716T-04I/SO Maximum Ratings & Electrical Characteristics
| Core Processor | PIC16 |
| Core Size | 8-bit |
| Architecture | RISC (Harvard) |
| Instruction Set Width | 14-bit |
| Program Memory Size | 3.5 KB (2K x 14) |
| Program Memory Type | OTP (One-Time-Programmable) |
| RAM Size | 128 x 8 bytes |
| Max CPU Speed | 4 MHz |
| Instruction Cycle | 200 ns |
| Supply Voltage (VDD) | 2.5 V to 5.5 V |
| Number of I/O Pins | 13 |
| ADC | 4 channels x 8-bit |
| Timers | 2 x 8-bit + 1 x 16-bit |
| PWM / CCP | Capture/Compare/PWM module |
| Communication | USART (TX/RX) |
| Peripherals | Brown-out Detect/Reset, POR, PWM, WDT |
| Oscillator Type | External |
| Package | 18-pin SOIC (SO) |
| Operating Temperature | -40 C to +85 C (Industrial, 'I' suffix) |
| Mounting Type | Surface Mount |
| Packaging | Tape & Reel (T/R) |
| RoHS Status | Compliant |
PIC16LC716T-04I/SO Pin Configuration
| Pin 1 | /MCLR β Master Clear (reset) input, active low |
| Pin 2 | RA0/AN0 β Port A bit 0 / analog input 0 |
| Pin 3 | RA1/AN1 β Port A bit 1 / analog input 1 |
| Pin 4 | RA2/AN2/CVREF β Port A bit 2 / analog input 2 / comparator voltage reference |
| Pin 5 | RA3/AN3/VREF+ β Port A bit 3 / analog input 3 / ADC positive reference |
| Pin 6 | RA4/T0CKI β Port A bit 4 / Timer0 clock input (open-drain) |
| Pin 7 | RA5/AN4/SS β Port A bit 5 / analog input 4 / SPI slave select |
| Pin 8 | VSS β Ground reference |
| Pin 9 | OSC1/CLKIN β Oscillator crystal input / external clock input |
| Pin 10 | OSC2/CLKOUT β Oscillator crystal output / clock output |
| Pin 11 | RC0/T1OSO/T1CKI β Port C bit 0 / Timer1 oscillator output / Timer1 clock input |
| Pin 12 | RC1/T1OSI/CCP2 β Port C bit 1 / Timer1 oscillator input / CCP2 |
| Pin 13 | RC2/CCP1 β Port C bit 2 / Capture/Compare/PWM 1 |
| Pin 14 | RC3/SCK/SCL β Port C bit 3 / SPI clock / I2C clock |
| Pin 15 | RC4/SDI/SDA β Port C bit 4 / SPI data in / I2C data |
| Pin 16 | RC5/SDO β Port C bit 5 / SPI data out |
| Pin 17 | RC6/TX/CK β Port C bit 6 / USART TX / USART clock |
| Pin 18 | RC7/RX/DT β Port C bit 7 / USART RX / USART data |
| Pin 17 | VDD β Positive supply voltage (per Microchip datasheet DS39592 pin diagram) |
Typical Applications
PIC16LC716T-04I/SO is suitable for 6 applications: Battery-Operated Sensor Node, Small Appliance Controller, LED Lighting Controller, Automotive Body Electronics, Industrial Process Sensor Transmitter, Hobby and Education Development Board.
Battery-Operated Sensor Node
The PIC16LC716T-04I/SO fits battery-powered sensor nodes because its 2.5Vβ5.5V VDD range accepts two AA cells across their full discharge curve while drawing typical active current well below 1 mA at 4 MHz. The integrated 4-channel 8-bit ADC samples temperature, voltage, or photodiode signals without an external converter, and the 13 digital I/O lines drive status LEDs, button inputs, and low-side MOSFET switches for sensor power gating. Brown-out detect keeps the MCU in reset when cells drop below the safe threshold, preventing EEPROM corruption; the on-chip WDT wakes the part from sleep on a fault. Compared with the flash-based PIC16F716, this OTP variant is preferred for sealed, high-volume sensor modules where firmware never changes after deployment. Pin count of 18 SOIC leaves enough headroom for an I2C sensor expansion bus and UART debug output simultaneously.
Recommended
Small Appliance Controller
The PIC16LC716T-04I/SO is widely deployed in small appliances such as coffee makers, blenders, and toaster ovens where it reads push-buttons and rotary encoders, drives a 7-segment or LCD display, and times heating elements via the on-chip CCP/PWM module. Industrial -40C to +85C operation covers kitchen and laundry environments, while the 18-pin SOIC fits behind the control panel in a tight mechanical layout. The CCP module generates 1β20 kHz PWM at duty cycles from 0% to 100%, accurate enough to phase-control triacs for heater elements or to drive brushless DC fans. Compared with discrete logic or older 8051 designs, the PIC16LC716 saves board space and BOM cost while adding ADC for temperature feedback loops that improve appliance safety and energy efficiency.
Recommended
LED Lighting Controller
Lighting control modules use the PIC16LC716T-04I/SO to generate PWM dimming signals for white, RGB, or RGBW LED strings, with the on-chip 4-channel ADC reading ambient light sensors or potentiometers for dimmer-knob feedback. The CCP module provides 10-bit-equivalent PWM via the 8-bit PWM + 4-bit software extension trick, giving smooth dimming without flicker. Wide 2.5β5.5V VDD means the same board can be powered from a 3.3V buck or 5V linear regulator, simplifying inventory for residential and commercial fixture families. Brown-out detect prevents flash corruption during AC-line brown-outs, and the 13 I/O pins support DMX-512 or 0β10V analog dimming interfaces alongside local push-button control. The OTP memory is locked at production, preventing end-user firmware tampering that could void safety certifications.
Recommended
Automotive Body Electronics
Within automotive body modules β such as mirror controllers, seat adjusters, and interior lighting β the PIC16LC716T-04I/SO provides 13 I/O lines sufficient for H-bridge direction logic, position feedback via ADC, and LIN-bus-style UART communication at 19.2 kbps. Industrial -40C to +85C operation survives under-dash environments, while the wide VDD range tolerates cranking transients when paired with an external LDO. The CCP/PWM drives small DC motors or proportional valves for fluid control, and the WDT catches firmware lockups during load-dump events. Compared with AEC-Q100-qualified parts, this PIC16LC716 does not carry full automotive qualification, so it is best suited for non-safety body functions where the OEM accepts industrial-grade components. The flash-based PIC16F716-I/SO is the drop-in upgrade for firmware revisions after SOP.
Recommended
Industrial Process Sensor Transmitter
In 4β20 mA current-loop or 0β10 V process transmitters, the PIC16LC716T-04I/SO digitizes bridge or RTD signals with its 4-channel 8-bit ADC, applies linearization in firmware, and outputs the result via PWM or UART to a downstream controller. Industrial temperature range and 2.5β5.5V VDD let the same design operate from 24V loop power through a buck regulator or directly from a 5V sensor supply. The 13 I/O lines accommodate multiple sensor inputs, alarm LEDs, and HART-modem handshake signals. Brown-out detect and WDT are essential for unattended remote installations where firmware lockup would mean a service truck roll. The OTP memory eliminates field firmware tampering and supports long lifecycle of 15+ years typical for industrial sensor SKUs.
Recommended
Hobby and Education Development Board
Universities and hobbyists use the PIC16LC716T-04I/SO on training boards and breadboard-friendly development kits because the 18-pin SOIC footprint is large enough to hand-solder yet small enough for compact projects. The PICkit programmer ecosystem plus free MPLAB X IDE and XC8 compiler make the part attractive for introductory embedded courses where students learn ADC sampling, PWM generation, and USART communication on a single $1 chip. The 4 MHz instruction cycle is slow enough that students can step through code with an instructor watching LEDs, yet fast enough for simple control loops. Industrial temperature grade lets the same hardware survive classroom thermostats and student-carried projects, while the OTP memory teaches firmware-finalization discipline before students move on to flash-based designs like the PIC16F716-I/SO.
Recommended
Recommended Products Summary
Engineering reference data for PIC16LC716T-04I/SO β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16LC716-04I/SO | PIC16LC716T-04/SO | PIC16LC716-04/SO | PIC16F716-I/SO | PIC16F716T-I/SO | PIC16LC711-04I/SO |
|---|---|---|---|---|---|---|---|
| Package | SOIC-18 (SO) | SOIC-18 (SO) - same | SOIC-18 (SO) - same | SOIC-18 (SO) - same | SOIC-18 (SO) - same | SOIC-18 (SO) - same | SOIC-18 (SO) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Memory Type | OTP (3.5 KB) | OTP (3.5 KB) | OTP (3.5 KB) | OTP (3.5 KB) | Flash (3.5 KB) | Flash (3.5 KB) | OTP (1.75 KB) |
| Max Clock Speed | 4 MHz | 4 MHz | 4 MHz | 4 MHz | 20 MHz | 20 MHz | 4 MHz |
| Operating Temperature | -40 C to +85 C (Industrial) | -40 C to +85 C (Industrial) | 0 C to +70 C (Commercial) | 0 C to +70 C (Commercial) | -40 C to +85 C (Industrial) | -40 C to +85 C (Industrial) | -40 C to +85 C (Industrial) |
| ADC | 4 ch x 8-bit | 4 ch x 8-bit | 4 ch x 8-bit | 4 ch x 8-bit | 4 ch x 8-bit | 4 ch x 8-bit | No ADC |
| Number of I/O | 13 | 13 | 13 | 13 | 13 | 13 | 13 |
| RAM Size | 128 bytes | 128 bytes | 128 bytes | 128 bytes | 128 bytes | 128 bytes | 68 bytes |
| Supply Voltage | 2.5 V to 5.5 V | 2.5 V to 5.5 V | 2.5 V to 5.5 V | 2.5 V to 5.5 V | 2.0 V to 5.5 V | 2.0 V to 5.5 V | 2.5 V to 5.5 V |
Key Differentiators
- Industrial -40C to +85C temperature range in a 4 MHz 18-pin SOIC (vs PIC16LC716T-04/SO)
- On-chip 4-channel 8-bit ADC eliminates external converter (vs PIC16LC711-04I/SO)
- Field-locked OTP memory prevents firmware tampering (vs PIC16F716-I/SO)
Design Notes
The PIC16LC716T-04I/SO requires a decoupling capacitor of 100 nF ceramic placed within 5 mm of the VDD pin (pin 17) and a bulk 10 uF tantalum or aluminum capacitor on the same rail. The 'LC' wide-voltage process draws roughly 2 mA active at 4 MHz and 1 uA in sleep; ensure the LDO or battery can source the inrush during CCP/PWM transitions on heavily-loaded outputs. Brown-out reset should be enabled in the configuration word with a threshold of about 2.4V to protect OTP program integrity during slow VDD rise.
Route the crystal traces (OSC1/OSC2) short and symmetric, with the crystal within 5 mm of the pins, and guard them with a ground pour to avoid coupling noise into the ADC. Place the ICSP connector (RB6/ICSPCLK, RB7/ICSPDAT, /MCLR, VDD, VSS) at the board edge so a PICkit 3/4 can clip on without removing the MCU. Keep analog traces (AN0βAN4) away from PWM outputs and the USART lines, and consider a ferrite bead on VDD if the analog inputs share the digital supply.
OTP memory cannot be erased or rewritten; a single bit error during programming bricks the part permanently. Always verify the OTP image with a Microchip emulator (PIC16C715) or a PIC16F716 flashed with equivalent firmware before committing to PIC16LC716T-04I/SO volume production. Also note that configuration words are OTP as well, so the watchdog, brown-out, and oscillator selection must be finalized before programming. Lastly, do not use /MCLR as a digital input without configuring the MCLRE fuse disabled, otherwise the pin will not function as I/O.
Compliance Information
RoHS compliant per Microchip product page; not AEC-Q100 qualified β for automotive safety functions, choose PIC16F716-I/SO with AEC-Q100 documentation or a higher-grade automotive MCU.