PIC16LCE623-04I/SS - 8-Bit 4MHz OTP MCU 20-SSOP | Microchip
MPN: PIC16LCE623-04I/SS ✗ End of Life| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $2.65 | $2.65 |
| 10 | $2.38 | $23.80 |
| 100 | $2.05 | $205.00 |
| 500 | $1.82 | $910.00 |
| 1,000 | $1.55 | $1,550.00 |
PIC16LCE623-04I/SS Overview
Key features include 13 general-purpose I/O pins, a 2.5 V to 5.5 V wide operating voltage range, and an industrial temperature grade of -40 °C to +85 °C. The "LCE" suffix denotes the low-power CMOS core variant designed for battery-friendly operation, while the "04" speed grade specifies 4 MHz maximum oscillator frequency and the "I" suffix indicates the industrial temperature range.
The PIC16LCE623-04I/SS uses Microchip's well-established mid-range 8-bit RISC architecture with 35 single-cycle instructions. The architecture provides deterministic timing suitable for real-time control, while the 14-bit instruction word supports direct bit manipulation, hardware register access, and interrupt-driven peripherals. Internal peripherals typically include timers, a watchdog timer, and analog comparators depending on die variant.
Typical applications span low-power consumer products, white goods and appliance controls, simple sensor interfaces, and industrial monitoring nodes. The 20-SSOP package is footprint-compatible with many PIC16Cxxx siblings, which simplifies board respins when migrating to alternate OTP or windowed variants during prototyping.
When designing with this device, ensure the oscillator configuration matches the application's EMI and power budget, and budget for OTP programming during production flow. The 20-SSOP exposed-pad variant is not used here; standard SSOP land pattern applies.
This page synthesizes distributor pricing, cross-reference search results, and engineering selection guidance not aggregated in a single datasheet, helping engineers decide whether the PIC16LCE623-04I/SS fits their BOM or whether a Flash-based PIC16F sibling is a better long-term choice.
Drop-in alternatives for PIC16LCE623-04I/SS — 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 PIC16LCE623-04I/SS (same form factor and footprint) — differing in Program Memory Type, Supply Voltage Range, Package, Program Memory Size, ADC.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16F628-I/SS
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16F88-I/SS
✅ Drop-In✓ In Stock
$3.08 / Unit
View Datasheet →PIC16LC622-04I/SS
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
PIC16LC621A-04I/SS
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
PIC16LC620A-04I/SS
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$1.55 / Unit
View Datasheet →PIC16F627A-I/SS
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$1.12 / Unit
View Datasheet →PIC16LCE623-04I/SS Maximum Ratings & Electrical Characteristics
| Core Architecture | PIC16C 8-bit RISC |
| Program Memory Type | OTP (One-Time-Programmable) |
| Program Memory Size | 896 B (512 x 14) |
| RAM Size | 96 B |
| EEPROM Data Memory | 128 B |
| Maximum CPU Frequency | 4 MHz |
| Instruction Set | 35 single-cycle instructions (14-bit word) |
| Supply Voltage Range | 2.5 V to 5.5 V |
| I/O Pins | 13 |
| Operating Temperature | -40 °C to +85 °C (Industrial) |
| Package | 20-pin SSOP (5.30 mm body) |
| Mounting Type | Surface Mount |
PIC16LCE623-04I/SS Pin Configuration
| Pin 1 | RA0/AN0 — GPIO RA0 / analog input AN0 |
| Pin 2 | RA1/AN1 — GPIO RA1 / analog input AN1 |
| Pin 3 | RA2/AN2 — GPIO RA2 / analog input AN2 |
| Pin 4 | MCLR/VPP — Master clear reset / programming voltage |
| Pin 5 | VSS — Ground reference |
| Pin 6 | RB0/INT — GPIO RB0 / external interrupt |
| Pin 7 | RB1 — GPIO RB1 |
| Pin 8 | RB2 — GPIO RB2 |
| Pin 9 | RB3 — GPIO RB3 |
| Pin 10 | RB4 — GPIO RB4 |
| Pin 11 | RB5 — GPIO RB5 |
| Pin 12 | RB6 — GPIO RB6 |
| Pin 13 | RB7 — GPIO RB7 |
| Pin 14 | VDD — Positive supply (2.5 V to 5.5 V) |
| Pin 15 | OSC2/CLKOUT — Oscillator output / clock out |
| Pin 16 | OSC1/CLKIN — Oscillator input / clock in |
| Pin 17 | RA3/AN3 — GPIO RA3 / analog input AN3 |
| Pin 18 | RA4/T0CKI — GPIO RA4 / Timer0 clock input |
| Pin 19 | VSS — Ground reference |
| Pin 20 | RA5 — GPIO RA5 |
Typical Applications
PIC16LCE623-04I/SS is suitable for 6 applications: White Goods Appliance Control, Battery-Powered Sensor Node, Industrial Push-Button Interface, Consumer Remote Control, Simple HVAC Fan Controller, LED Display Driver Module.
White Goods Appliance Control
The PIC16LCE623-04I/SS fits white-goods appliance control boards where firmware is frozen at production scale. Its 2.5 V to 5.5 V supply tolerates direct connection to rectified 5 V rails, while 13 GPIO pins drive relay coils, indicator LEDs, and keypad matrix scanning. The industrial -40 to +85 °C range survives kitchen and laundry environments, and the 20-SSOP package allows slim PCBs behind control panels. Companion parts: PIC16F628-I/SS for development, ULN2003A relay driver.
Recommended
Battery-Powered Sensor Node
The PIC16LCE623-04I/SS suits battery-powered sensor nodes due to its low-power CMOS core (LCE suffix) and wide 2.5 V to 5.5 V operating range that accepts 2xAA or Li coin cells. With 13 GPIO, designers connect thermistor, PIR, or reed-switch inputs directly, then wake from sleep via watchdog interrupt. The 896 B OTP accommodates fixed sensing schedules, while the 96 B RAM buffers measurement samples. Companion parts: MCP1700 LDO regulator, MCP9700 temperature sensor.
Recommended
Industrial Push-Button Interface
The PIC16LCE623-04I/SS handles industrial push-button and rotary-encoder interfaces that demand deterministic response and ESD-tolerant I/O. The 4 MHz instruction cycle provides predictable debounce timing, while 13 GPIO scan up to a 4x4 matrix plus status LEDs. Industrial temperature range ensures reliable operation in control cabinets. The 20-SSOP surface-mount package simplifies automated assembly. Companion parts: PIC16F628-I/SS, TVS diode array for ESD protection.
Recommended
Consumer Remote Control
The PIC16LCE623-04I/SS powers consumer IR remote controls, where the 896 B OTP stores fixed key-code tables and the 4 MHz clock drives IR carrier generation. The 2.5 V minimum supply allows direct operation from a single 3 V coin cell, extending battery life through the low-power CMOS core. The 13 GPIO accommodate 12-key matrices plus IR LED drive. Companion parts: TSOP38238 IR receiver, BC847 NPN driver.
Recommended
Simple HVAC Fan Controller
The PIC16LCE623-04I/SS controls multi-speed HVAC fans, reading thermistor input via on-chip comparator and switching TRIAC gates through opto-isolated drivers. The wide 2.5 V to 5.5 V supply accepts 5 V logic rails, while 13 GPIO drive multiple fan-speed relays plus status LEDs. Industrial temperature range supports equipment-room installations. Companion parts: MOC3021 opto-triac driver, PIC16F628-I/SS for prototyping.
Recommended
LED Display Driver Module
The PIC16LCE623-04I/SS drives multiplexed 7-segment or dot-matrix LED displays in appliance and instrumentation front panels. With 13 GPIO, the device scans 8 digits plus decimal points via charlieplexing or direct multiplexing. The 4 MHz CPU sustains refresh rates above 100 Hz, eliminating flicker. OTP memory stores fixed character sets and animation patterns, reducing BOM cost at high volume. Companion parts: ULN2003A sink driver, BC847 source driver.
Recommended
Recommended Products Summary
Engineering reference data for PIC16LCE623-04I/SS — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16F628-I/SS | PIC16F88-I/SS | PIC16LC622-04I/SS | PIC16F627A-I/SS |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 20-SSOP | 20-SSOP (same) | 20-SSOP (same) | 20-SSOP (same) | 20-SSOP (same) |
| Program Memory Type | OTP (896 B) | Flash (3.5 KB) | Flash (7 KB) | OTP (896 B) | Flash (1.75 KB) |
| Max CPU Frequency | 4 MHz | 20 MHz | 20 MHz | 4 MHz | 20 MHz |
| Supply Voltage | 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 | 2.0 V to 5.5 V |
| RAM | 96 B | 224 B | 368 B | 96 B | 224 B |
| EEPROM | 128 B | 128 B | 256 B | 0 B | 128 B |
| I/O Pins | 13 | 16 | 16 | 13 | 16 |
| Operating Temperature | -40 °C to +85 °C | -40 °C to +85 °C | -40 °C to +85 °C | -40 °C to +85 °C | -40 °C to +85 °C |
Key Differentiators
- OTP memory for lowest-cost high-volume production (vs PIC16F628-I/SS)
- Industrial -40 to +85 °C temperature grade (vs PIC16C623 (commercial grade))
- Wide 2.5 V to 5.5 V supply supports battery and 5 V rails (vs Standard PIC16C623 (4.0 V to 6.0 V))
Design Notes
The PIC16LCE623-04I/SS operates from 2.5 V to 5.5 V and supports a sleep current under 1 µA typical, enabling battery-friendly designs. Place a 100 nF decoupling capacitor within 5 mm of the VDD pin (pin 14) and a bulk 10 µF tantalum or aluminum-polymer cap at the board power entry. For sleep-mode wakeup, configure the watchdog timer or external interrupt (RB0/INT) rather than polling, and disable unused peripherals via the CMCON and PCON registers to minimize Iq.
OTP memory cannot be erased or rewritten, so firmware bugs discovered after programming are unrecoverable on the same device. Plan for at least two programming iterations during development using PIC16F628-I/SS samples, then freeze the firmware before migrating to PIC16LCE623-04I/SS for production. Also note that ICSP programming requires MCLR/VPP to be raised to ~13 V; ensure your in-circuit programmer can drive this pin through any isolation resistor without exceeding the VDD rail.
The 20-SSOP package has a 0.65 mm pitch and a thermal pad-free body, allowing routing on a 2-layer FR4 board with 0.15 mm trace/space. Keep the oscillator traces (OSC1/OSC2, pins 15-16) under 10 mm and shield them with a ground pour to limit EMI coupling. Place the MCLR pull-up (typically 10 kΩ) within 3 mm of pin 4 and add a 100 nF cap to ground if MCLR noise is observed during in-circuit programming.
Compliance Information
RoHS, lead-free, and REACH status were not present in the verified distributor snippets; check the Microchip PIC16C62X family datasheet or product page for definitive compliance statements before qualifying for consumer/CE-marked products.
