PIC16LCE624-04/P - 8-bit PIC MCU 1.75KB OTP 4MHz 18-PDIP | Microchip
MPN: PIC16LCE624-04/P ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $3.2 | $3.20 |
| 10 | $2.92 | $29.20 |
| 100 | $2.55 | $255.00 |
| 500 | $2.2 | $1,100.00 |
| 1,000 | $1.95 | $1,950.00 |
PIC16LCE624-04/P Overview
A microcontroller (MCU) is a single-chip computer that integrates a CPU, memory, and peripheral interfaces onto one die. The PIC16C/E family sits in the broader taxonomy of microcontroller -> embedded controller -> semiconductor IC, using a RISC Harvard-architecture core that executes one instruction per clock cycle (except branches). OTP program memory means each device can be programmed once by the user but cannot be erased, making this part well-suited to cost-sensitive volume production of fixed-function appliances.
Key features include 13 bidirectional digital I/O pins, an integrated analog comparator, a Capture/Compare/PWM (CCP) module, a 5-channel 8-bit ADC, and an internal EEPROM data memory block. The wide 2.0V to 6.0V supply range supports both 3.3V and 5V designs, and the commercial temperature grade (0C to +70C) covers most indoor and office equipment environments.
The PIC16LCE624-04/P is built around Microchip's 14-bit instruction word PIC16 architecture with separate program and data buses, allowing simultaneous instruction fetch and operand access. The 4 MHz oscillator input combined with a 4:1 internal divider yields a 1 MHz instruction cycle rate, providing predictable deterministic timing ideal for interrupt-driven control loops.
Typical applications include white goods and appliance controls, simple sensor interfaces, low-cost motor control drivers, LED lighting controllers, and battery-powered consumer products. The 18-pin PDIP footprint is also popular in educational and hobbyist prototyping on breadboards and through-hole PCBs.
When designing with this part, verify that your code is fully validated before programming because OTP cannot be reprogrammed; consider PIC16F-series flash equivalents for development and small-volume runs.
This page synthesizes distributor pricing, drop-in PIC16 alternatives, and practical design notes not found in the manufacturer datasheet alone.
Drop-in alternatives for PIC16LCE624-04/P — 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 PIC16LCE624-04/P (same form factor and footprint) — differing in Package, Instruction Cycle Time, Program Memory Size, Timers, Core Architecture.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16LCE624-04E/P
✅ Drop-In✓ In Stock
$4.05 / Unit
View Datasheet →PIC16LCE624-04I/P
✅ Drop-In✓ In Stock
$1.85 / Unit
View Datasheet →PIC16LCE624-04/SO
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16LCE623-04/P
✅ Drop-In✓ In Stock
$1.45 / Unit
View Datasheet →PIC16C711-04/P
✅ Drop-In✓ In Stock
$2.54 / Unit
View Datasheet →PIC16LCE624-04/P Maximum Ratings & Electrical Characteristics
| Product Family | PIC16C Series |
| Core Architecture | 8-bit RISC PIC |
| Program Memory Size | 1.75 KB (1K x 14) |
| Program Memory Type | OTP (One-Time Programmable) |
| RAM Size | 96 bytes |
| EEPROM Size | 64 bytes (internal data EEPROM) |
| Maximum Clock Speed | 4 MHz |
| Instruction Cycle Time | 1 MHz (4:1 divider) |
| Supply Voltage Range | 2.0 V to 6.0 V |
| I/O Pins | 13 |
| ADC | 5-channel x 8-bit |
| Analog Comparator | Yes (integrated) |
| CCP Module | 1 (Capture/Compare/PWM) |
| Timers | Timer0, Timer1, Watchdog Timer |
| Package | 18-pin PDIP (0.300 inch, 7.62mm) |
| Mounting Type | Through-Hole (DIP) |
| Temperature Grade | Commercial (0C to +70C) |
| Terminal Form | Through-Hole |
| Number of Terminals | 18 |
| Package Code | DIP |
| Lifecycle Status | Active |
PIC16LCE624-04/P Pin Configuration
| Pin 1 | RA2/AN2/VREF- — Bidirectional I/O / Analog input 2 / ADC negative reference |
| Pin 2 | RA3/AN3/VREF+ — Bidirectional I/O / Analog input 3 / ADC positive reference |
| Pin 3 | RA4/T0CKI — Bidirectional I/O / Timer0 clock input |
| Pin 4 | RA5/AN4/SS — Bidirectional I/O / Analog input 4 / SSP slave select |
| Pin 5 | VSS — Ground reference |
| Pin 6 | RB0/INT — Bidirectional I/O / External interrupt input |
| Pin 7 | RB1 — Bidirectional I/O |
| Pin 8 | RB2 — Bidirectional I/O |
| Pin 9 | RB3/PGM — Bidirectional I/O / Low-voltage programming input |
| Pin 10 | RB4 — Bidirectional I/O / interrupt-on-change |
| Pin 11 | RB5 — Bidirectional I/O / interrupt-on-change |
| Pin 12 | RB6/PGC — Bidirectional I/O / ICSP clock / interrupt-on-change |
| Pin 13 | RB7/PGD — Bidirectional I/O / ICSP data / interrupt-on-change |
| Pin 14 | VDD — Positive supply voltage |
| Pin 15 | OSC2/CLKOUT — Oscillator crystal output / clock output (Fosc/4) |
| Pin 16 | OSC1/CLKIN — Oscillator crystal input / external clock input |
| Pin 17 | RA0/AN0 — Bidirectional I/O / Analog input 0 |
| Pin 18 | RA1/AN1 — Bidirectional I/O / Analog input 1 |
Typical Applications
PIC16LCE624-04/P is suitable for 6 applications: White Goods and Appliance Control, Battery-Powered Sensor Interface, LED Lighting Controllers, Low-Cost Motor Control, Consumer Electronics Remote Controls, Educational and Hobbyist Prototyping.
White Goods and Appliance Control
The PIC16LCE624-04/P fits white-goods appliance controls thanks to its 1.75KB OTP memory, 13 I/O pins, and integrated 5-channel 8-bit ADC that handles thermistor, level, and door-switch sensing in a single chip. With a 4 MHz oscillator it can sample sensors at deterministic 1 MIPS, executing PID loops for temperature regulation in ovens, washing machines, and dishwashers. The 2.0V-6.0V supply range covers both 3.3V logic and 5V relay-driver boards. OTP programming locks the final firmware at production, eliminating field reprogramming risk and reducing per-unit cost below flash-MCU alternatives by 10-25 percent at volumes above 10K units.
Recommended
Battery-Powered Sensor Interface
The PIC16LCE624-04/P suits battery-powered sensor interfaces because its low-voltage CMOS core operates from 2.0 V to 6.0 V, allowing direct connection to 2xAA alkaline or 2xAAA cells without boost circuitry. Sleep current in the microamp range (per PIC16CE624 family datasheet) enables multi-year battery life for periodic wake-and-sample duty cycles. The integrated 5-channel ADC reads thermistors, photodiodes, and analog sensors; the 13 I/O pins drive LED indicators, low-power radios, and user buttons. The 18-pin PDIP package simplifies hand-soldered prototypes for evaluation before migrating to the SOIC-18 surface-mount variant.
Recommended
LED Lighting Controllers
The PIC16LCE624-04/P is a strong fit for LED lighting controllers due to its integrated Capture/Compare/PWM module that generates precision PWM dimming signals without external timer ICs. The 4 MHz clock with 1 MIPS instruction rate enables flicker-free PWM frequencies above 200 Hz, well above the 100 Hz persistence threshold. The 13 I/O pins drive multiple LED channels, accept button inputs, and interface to DMX or 0-10V analog dimming control. The 2.0V-6.0V supply covers both 3.3V logic and 5V MOSFET-driver rails, and OTP memory locks the lighting curve at production, preventing field tampering.
Recommended
Low-Cost Motor Control
The PIC16LCE624-04/P fits low-cost motor control designs such as small DC fans, brushless pumps, and stepper drivers, where its CCP module generates PWM drive signals and its 5-channel ADC samples back-EMF or current-sense resistors for closed-loop control. The 13 I/O pins handle direction, enable, brake, tachometer feedback, and fault inputs. The 4 MHz clock is sufficient for low-RPM motor commutation loops below 10 kHz PWM. The 2.0V-6.0V supply supports both 3.3V logic and 5V H-bridge driver ICs. OTP memory locks proprietary motor-control algorithms, preventing unauthorized cloning of competitive motor designs.
Recommended
Consumer Electronics Remote Controls
The PIC16LCE624-04/P is well suited to consumer IR/RF remote controls thanks to its low power consumption (LC-family CMOS core), 13 I/O pins for keypad matrix scanning, and integrated ADC for battery-voltage monitoring. The 1.75KB OTP memory holds complex IR protocols (RC5, NEC, SIRC) and pairing logic. The 2.0V-6.0V supply operates directly from 2xAAA cells, while sleep current in the microamp range (per family datasheet) extends battery life to multiple years. The 18-pin PDIP simplifies through-hole prototyping on breadboards during development, migrating to SOIC-18 for production.
Recommended
Educational and Hobbyist Prototyping
The PIC16LCE624-04/P is popular for educational and hobbyist prototyping thanks to its 18-pin PDIP through-hole package that fits standard breadboards and 0.300 inch perfboards. The PIC16 mid-range architecture is one of the most-documented 8-bit MCU families, with extensive free tutorials, application notes, and community code libraries available from Microchip. The 1.75KB OTP forces students to plan memory carefully, teaching good firmware-engineering habits. The 4 MHz oscillator is well within the range of low-cost ceramic resonators, and the 2.0V-6.0V supply accepts any common bench supply.
Recommended
Recommended Products Summary
Engineering reference data for PIC16LCE624-04/P — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16LCE624-04E/P | PIC16LCE624-04I/P | PIC16LCE624-04/SO | PIC16LCE623-04/P | PIC16C711-04/P |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 18-pin PDIP | 18-pin PDIP - same | 18-pin PDIP - same | SOIC-18 - same footprint family | 18-pin PDIP - same | 18-pin PDIP - same |
| Program Memory | 1.75 KB OTP | 1.75 KB OTP | 1.75 KB OTP | 1.75 KB OTP | 0.875 KB OTP (-50%) | 1.75 KB EPROM |
| Memory Type | OTP (one-time) | OTP | OTP | OTP | OTP | EPROM (erasable) |
| Max Clock Speed | 4 MHz | 4 MHz | 4 MHz | 4 MHz | 4 MHz | 4 MHz |
| Supply Voltage | 2.0 V to 6.0 V | 2.0 V to 6.0 V | 2.0 V to 6.0 V | 2.0 V to 6.0 V | 2.0 V to 6.0 V | 3.0 V to 6.0 V |
| I/O Pins | 13 | 13 | 13 | 13 | 13 | 13 |
| Temperature Grade | Commercial 0C to +70C | Extended -40C to +125C | Industrial -40C to +85C | Commercial 0C to +70C | Commercial 0C to +70C | Commercial 0C to +70C |
Key Differentiators
- Lowest-cost OTP option in the PIC16CE624 family (vs PIC16C711-04/P)
- Industrial temperature grade variant available (vs PIC16LCE624-04E/P)
- Lower memory variant exists for cost-sensitive designs (vs PIC16LCE623-04/P)
Design Notes
The PIC16LCE624-04/P uses OTP (One-Time Programmable) memory, which cannot be erased or rewritten. Any code change after programming requires a new device. Always validate firmware on a flash-based development MCU (such as PIC16F628A) before committing to OTP production units. Failed production programming equates to scrapped parts, so production programming equipment must include verification and code-protection checks per Microchip programming specifications.
The PIC16LCE624-04/P operates from 2.0 V to 6.0 V. For stable operation, place a 0.1 uF decoupling capacitor as close as possible to the VDD pin (Pin 14), with a bulk 10 uF tantalum or aluminum electrolytic capacitor on the same supply rail. The MCLR pin (internally pulled, not present on this 18-pin variant) and the VSS pin must both be connected. Brown-out detection is supported via configuration fuses - enable the BOR module for battery-powered applications to prevent code corruption at low VDD.
When designing PCB layouts with the 18-pin PDIP footprint, follow Microchip AN2159 ('PIC16/17 Oscillator Design Considerations') for the oscillator traces. Keep crystal traces short, place the crystal within 0.5 inches of OSC1/OSC2, and surround the traces with a ground guard ring. For analog inputs (RA0-RA5), separate analog and digital ground planes, joining them at a single point near the VSS pin. Add a 100 nF capacitor on each AVCC-connected pin if the analog reference is used.
The 18-pin PDIP has a 0.300 inch (7.62 mm) row spacing and 0.100 inch (2.54 mm) pin pitch - the standard DIP-18 footprint. Through-hole pads should be drilled 0.038-0.042 inch (0.97-1.07 mm) with 0.060-0.080 inch (1.5-2.0 mm) annular rings. Pin 1 identification marker (silkscreen dot or notch) must match the datasheet orientation. For hand-soldered prototypes, leave 0.5 inch of clearance around the IC for inspection access.
Compliance Information
Compliance data not present in verified web search results. Per Microchip legacy product policy, PIC16CE624 family parts were originally released before current RoHS/REACH compliance documentation standards. Contact Microchip directly for current compliance certification.
