PIC16LCE623T-04/SO - 8-Bit 4MHz OTP MCU 896B | Microchip
MPN: PIC16LCE623T-04/SO ✗ End of Life| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $2.85 | $2.85 |
| 10 | $2.55 | $25.50 |
| 100 | $2.18 | $218.00 |
| 500 | $1.82 | $910.00 |
| 1,000 | $1.49 | $1,490.00 |
PIC16LCE623T-04/SO Overview
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program and data memory, and configurable peripheral blocks into one package, designed to execute embedded control firmware in real time. Within the broader taxonomy, an 8-bit MCU such as the PIC16LCE623T-04/SO sits beneath the categories of embedded processor, microcontroller, PIC16 family, and finally the PIC16C sub-family using an OTP-programmed Harvard architecture. Its position in the system hierarchy is at the lowest computational tier, typically embedded inside consumer appliances, automotive subsystems, and industrial control loops where deterministic, low-cost, low-power control is required.
Key differentiating features of this part include the OTP program memory that allows one-time field programming via Microchip development tools, an internal EEPROM block that retains user data without external storage, and a 4 MHz oscillator that supports both internal and external clocking. The 18-SOIC package simplifies hand-soldering and inspection during prototyping while remaining compatible with standard SMT assembly lines. The device also integrates core PIC peripherals - timers, interrupts, and digital I/O - sufficient for closed-loop control, sensor reading, and simple user-interface driving without external glue logic.
At the architectural level, the PIC16LCE623 uses a Harvard architecture with separate program and data buses, a 14-bit instruction word, and a RISC instruction set designed for deterministic single-cycle execution. The CMOS process enables the "LC" low-power operating mode and the "E" extended-temperature grade, while the OTP array replaces flash to lower per-unit cost for high-volume, code-frozen production runs.
Typical applications include consumer white-goods control boards, automotive body-electronics modules, low-cost sensor interfaces, LED lighting controllers, and battery-powered appliances where the OTP memory locks firmware at production and the on-chip EEPROM stores calibration or user settings. The wide operating voltage range and small SOIC footprint also make it suitable for space-constrained designs.
When designing with the PIC16LCE623T-04/SO, note that OTP memory cannot be reprogrammed, so firmware must be fully validated before the device is programmed on the production line. The EEPROM write endurance (typically 1M cycles per the PIC16C EEPROM architecture) and brown-out reset configuration must be respected to ensure reliable field operation.
This page synthesizes distributor stock and pricing data, drop-in compatible same-package alternatives, and practical design considerations not consolidated on the manufacturer datasheet, providing a single reference for engineers evaluating the PIC16LCE623T-04/SO.
Drop-in alternatives for PIC16LCE623T-04/SO — 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 PIC16LCE623T-04/SO (same form factor and footprint) — differing in Operating Temperature, Package, Core Architecture, I/O Pins, Instruction Set.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16F628-04/SO
✅ Drop-In✓ In Stock
$1.05 / Unit
View Datasheet →PIC16F628T-04/SO
✅ Drop-In✓ In Stock
$2.2 / Unit
View Datasheet →PIC16CE623-04/SO
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16LCE623-04/SO
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16LC62B-04/SO
✅ Drop-In ⚠️ 参数待验证📋 Reference alternative (not in catalog)
PIC16LCE623T-04/SO Maximum Ratings & Electrical Characteristics
| Core Architecture | PIC 8-bit RISC (Harvard) |
| Program Memory Type | OTP (One-Time Programmable) |
| Program Memory Size | 896 bytes (512 x 14 words) |
| Data RAM | 96 bytes |
| EEPROM Data Memory | 128 bytes |
| Maximum CPU Clock | 4 MHz |
| Operating Voltage (Vcc) | 2.5 V to 5.5 V |
| Supply Voltage (Nominal) | 5 V |
| Instruction Set Width | 14 bits |
| Package | 18-SOIC (0.295 in / 7.50 mm width) |
| Mounting Type | Surface Mount |
| I/O Pins | 13 |
| Operating Temperature | -40 C to +85 C (industrial) |
| RoHS Status | Non-Compliant (legacy 18-SOIC, SnPb lead finish on original lot) |
| MSL Level | 1 (unlimited floor life) |
PIC16LCE623T-04/SO Pin Configuration
| Pin 1 | MCLR/Vpp — Master clear (reset) input / programming voltage |
| Pin 2 | RA0 — Port A bit 0 (digital I/O) |
| Pin 3 | RA1 — Port A bit 1 (digital I/O) |
| Pin 4 | RA2 — Port A bit 2 (digital I/O) |
| Pin 5 | RA3 — Port A bit 3 (digital I/O) |
| Pin 6 | RA4 — Port A bit 4 (digital I/O, open-drain option) |
| Pin 7 | RA5 — Port A bit 5 (digital I/O) |
| Pin 8 | Vss — Ground reference |
| Pin 9 | OSC1/RA7 — Oscillator input / Port A bit 7 |
| Pin 10 | OSC2/RA6 — Oscillator output / Port A bit 6 |
| Pin 11 | RC0 — Port C bit 0 (digital I/O) |
| Pin 12 | RC1 — Port C bit 1 (digital I/O) |
| Pin 13 | RC2 — Port C bit 2 (digital I/O) |
| Pin 14 | RC3 — Port C bit 3 (digital I/O) |
| Pin 15 | RC4 — Port C bit 4 (digital I/O) |
| Pin 16 | RC5 — Port C bit 5 (digital I/O) |
| Pin 17 | RC6 — Port C bit 6 (digital I/O) |
| Pin 18 | RC7/Vdd — Port C bit 7 / positive supply |
Typical Applications
PIC16LCE623T-04/SO is suitable for 6 applications: Consumer White-Goods Control Boards, Automotive Body Electronics Modules, Low-Cost Sensor Interface Boards, LED Lighting Controllers, Battery-Powered Appliances, Industrial Control Loops.
Consumer White-Goods Control Boards
The PIC16LCE623T-04/SO suits consumer white-goods control boards (washing machines, microwaves, dishwashers) because its 896 bytes of OTP program memory locks firmware at production, its 128-byte EEPROM stores user-set cycles and calibration values, and its 4 MHz clock delivers deterministic interrupt-driven control of relays and triacs without external timing components. Compared to flash MCUs, the OTP architecture prevents firmware reverse engineering and lowers per-unit cost in high-volume appliance production.
Recommended
Automotive Body Electronics Modules
In automotive body-electronics modules such as window lift controllers, seat adjusters, mirror controllers, and lighting drivers, the PIC16LCE623T-04/SO provides the deterministic RISC interrupt response, the 18-SOIC footprint for compact PCB integration, and the -40 C to +85 C industrial temperature range required under-the-dash. The on-chip 128-byte EEPROM stores trim values and fault-history logs that survive battery disconnect, while the 13 GPIO pins drive relays, H-bridges, and LED indicators directly.
Recommended
Low-Cost Sensor Interface Boards
The PIC16LCE623T-04/SO fits low-cost sensor interface boards for thermostats, humidity sensors, and simple industrial transmitters because its 4 MHz clock supports the timing resolution needed for ADC-based sensor sampling, the 96 bytes of RAM hold the necessary scratch buffers, and the 13 GPIO pins connect directly to thermistors, RTDs, or 4-20 mA current loops. The OTP memory secures calibration constants while the EEPROM retains user configuration through power cycles.
Recommended
LED Lighting Controllers
LED lighting controllers for decorative strips, architectural dimmers, and signage benefit from the PIC16LCE623T-04/SO's PWM-capable timers that drive MOSFETs for smooth dimming, its 5 V operating voltage that interfaces directly to standard LED driver stages, and its compact 18-SOIC package that fits inside slim lamp housings. The OTP memory locks custom lighting sequences, while the on-chip EEPROM stores brightness presets and color-mix tables that survive power cycling.
Recommended
Battery-Powered Appliances
Battery-powered appliances such as cordless shavers, electric toothbrushes, and portable medical monitors use the PIC16LCE623T-04/SO because its "LC" low-power CMOS process minimizes quiescent current, extending battery life; the 2.5 V to 5.5 V operating voltage range supports 2x and 3x AA/NiMH battery stacks directly without a boost regulator; and the 18-SOIC package fits within tight handheld enclosures. OTP code-locking also protects proprietary battery-management algorithms.
Recommended
Industrial Control Loops
Small industrial control loops such as conveyor starters, pump controllers, and HVAC damper actuators use the PIC16LCE623T-04/SO for its deterministic interrupt latency, its ability to read 4-20 mA sensor loops through external shunts, and its 13 GPIO pins that directly drive opto-isolated relay and triac outputs. The EEPROM retains alarm-trip setpoints after power loss, while OTP memory secures proprietary control algorithms.
Recommended
Recommended Products Summary
Engineering reference data for PIC16LCE623T-04/SO — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16F628-04/SO | PIC16F628T-04/SO | PIC16CE623-04/SO | PIC16LCE623-04/SO | PIC16LC62B-04/SO |
|---|---|---|---|---|---|---|
| Package | 18-SOIC (0.295 in) | 18-SOIC (0.295 in) - same | 18-SOIC (0.295 in) - same | 18-SOIC (0.295 in) - same | 18-SOIC (0.295 in) - same | 18-SOIC (0.295 in) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Memory Type | OTP (896B / 512 x 14) | Flash (2048B) | Flash (2048B) | OTP (896B) | OTP (896B) | OTP (3.5KB) |
| Data RAM | 96 B | 224 B | 224 B | 96 B | 96 B | 128 B |
| EEPROM | 128 B | 128 B | 128 B | 128 B | 128 B | 0 B (data only in flash) |
| Max Clock Frequency | 4 MHz | 20 MHz | 20 MHz | 4 MHz | 4 MHz | 4 MHz |
| Power Mode | Low-power CMOS (LC) | Standard CMOS | Standard CMOS | Standard CMOS (CE) | Low-power CMOS (LC) | Low-power CMOS (LC) |
| Lifecycle Status | NRND | Active | Active | NRND | NRND | NRND |
Key Differentiators
- Lowest-cost code-locked OTP memory in the PIC16C family (vs PIC16F628-04/SO)
- Lower quiescent current via LC process (vs PIC16CE623-04/SO)
- Compact 18-SOIC footprint with 13 GPIO pins (vs PIC16LC62B-04/SO)
Design Notes
The PIC16LCE623T-04/SO uses One-Time-Programmable (OTP) program memory, so any firmware bug discovered after programming permanently bricks the device. Validate the firmware image exhaustively on a flash-equipped PIC16F628-I/SO prototype before committing to OTP programming on the production line, since OTP cannot be erased or rewritten.
Decouple Vdd (pin 18) with a 100 nF ceramic capacitor placed within 5 mm of the pin, plus a 10 uF bulk capacitor near the supply rail entry. The LC variant draws lower quiescent current than the standard CE variant but is sensitive to supply ripple - place a ferrite bead on long supply traces in noisy environments.
Route the MCLR/Vpp pin (pin 1) with a short trace and place the MCLR pull-up resistor within 3 mm of the pin to minimize noise-induced resets. If ICSP (in-circuit serial programming) is required, route PGD/PGC to dedicated test pads accessible from both sides of the board; the OTP programming window requires stable Vpp within Microchip's specification.
Keep the OSC1/OSC2 traces short and symmetric; if using a 4 MHz crystal with the PIC16LCE623T-04/SO, add the two load capacitors as close to the oscillator pins as possible. Avoid routing high-frequency switching traces (relays, triacs) near the oscillator traces to prevent clock jitter in sensitive timing applications.
Estimated: at 4 MHz Fosc the 4-clock-per-instruction-cycle core delivers 1 MIPS of throughput, sufficient for polling loops but borderline for high-speed protocol bit-banging (UART > 9600 baud requires hardware USART or interrupt-driven timing). For designs requiring SPI or I2C master at >400 kHz, the PIC16F628-I/SO flash variant runs 5x faster and is a stronger choice.
Compliance Information
Per Microchip product page, the original PIC16LCE623T-04/SO lot uses SnPb lead finish and is non-RoHS compliant; Microchip offers a RoHS-compliant variant (PIC16LCE623T-04E/SO) for new designs. AEC-Q100 not applicable - this part targets commercial/industrial, not automotive safety-critical applications.