PIC16LCE623-04E/SO - 4MHz 8-bit OTP MCU 896B | Microchip
Référence : PIC16LCE623-04E/SO ⚠ Dernier achat| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $3.42 | $3,42 |
| 10 | $3.05 | $30,50 |
| 100 | $2.71 | $271,00 |
| 500 | $2.42 | $1 210,00 |
| 1 000 | $2.15 | $2 150,00 |
PIC16LCE623-04E/SO Présentation
An 8-bit OTP microcontroller is a single-chip computer built around a Harvard-architecture CPU with non-volatile one-time-programmable program memory, distinct from flash-based MCUs that allow multiple erase/write cycles. OTP parts ship blank and are programmed once by the user, which reduces unit cost versus flash parts and makes them suited to mature production runs where firmware is finalized and code protection is enforced by the inability to read back the program. In the broader taxonomy, this device belongs to microcontrollers -> embedded controllers -> ICs, and within the PIC16 family it represents an early-generation low-cost general-purpose MCU optimized for simple control loops, user-interface scanning, and appliance logic.
Key features include a 4 MHz maximum clock, 200 ns single-cycle instruction execution (except 2-cycle branches), 35 single-word RISC-style instructions, an analog comparator module, a watchdog timer with on-chip RC oscillator, in-circuit serial programming (ICSP) via two pins, and power-saving SLEEP mode with wake-up on pin change. The PIC16LCE623-04E/SO also supports power-on reset, brown-out reset, and code-protection fuses.
The architecture uses a 14-bit instruction word with separate program and data buses (Harvard), enabling simultaneous instruction fetch and operand access. The internal oscillator reference for the watchdog is RC-based and independent of the system clock, which simplifies BOM by removing an external watchdog resistor.
Typical applications include white-goods and appliance control panels, remote-keyless-entry keyfobs, simple sensor interfaces, low-power battery indicator circuits, and replacement of discrete logic in cost-sensitive industrial equipment.
When designing with this device, ensure the VDD supply is decoupled with 100 nF ceramic close to the pin pair, route the ICSP clock/data lines to a 5-pin header for in-system programming, and reserve the MCLR pin configuration carefully because enabling internal weak pull-up eliminates the need for an external reset RC network.
This page synthesizes distributor stock, parametric depth, and drop-in alternatives beyond what is shown in the manufacturer datasheet, helping procurement and design engineers validate a replacement or finalize a long-life BOM.
Alternatives de remplacement direct pour PIC16LCE623-04E/SO — même boîtier, compatible broche à broche. Les références à boîtier différent nécessitant une retouche du PCB sont exclues.
Variantes de cette série
Modèles de la même série directement compatibles avec PIC16LCE623-04E/SO (même facteur de forme et même empreinte) — différant par Internal Oscillator, Package, Instruction Set, Operating Temperature, RoHS Status.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
PIC16F628-04/SO
✅ Remplacement direct✓ En stock
$1.05 / unité
Voir la fiche technique →PIC16F627-04/SO
✅ Remplacement direct✓ En stock
$1.85 / unité
Voir la fiche technique →PIC16F628A-I/SO
✅ Remplacement direct✓ En stock
$2.32 / unité
Voir la fiche technique →PIC16F630-I/SO
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
PIC16F648A-I/SO
✅ Remplacement direct✓ En stock
$2.1 / unité
Voir la fiche technique →PIC16LCE621-04E/SO
✅ Remplacement direct ⚠️ Spécifications non vérifiées📋 Alternative de référence (hors catalogue)
PIC16LCE623-04E/SO Valeurs maximales et caractéristiques électriques
| Product Type | 8-bit OTP Microcontroller |
| Family | PIC16C (PIC16LCE62x series) |
| Core Architecture | RISC Harvard, 14-bit instruction word |
| Program Memory Size | 896 bytes (512 x 14 words), OTP |
| Data RAM Size | 96 bytes |
| Number of I/O Pins | 13 |
| Fréquence d'horloge maximale | 4 MHz |
| Instruction Cycle Time | 200 ns (single-cycle) |
| Instruction Set Size | 35 instructions |
| Supply Voltage (VDD) | 3.0 V to 3.6 V (LC low-voltage family) |
| Température de fonctionnement | -40 C to +125 C (extended grade, 'E' suffix) |
| Boîtier / Format | 18-SOIC (0.295 in / 7.50 mm body width) |
| Type de montage | Surface Mount |
| Oscillator Type | External RC/HS/XT (datasheet external clock input) |
| Peripherals | Analog comparator, 8-bit timer/counter, watchdog timer, ICSP |
Configuration des broches de PIC16LCE623-04E/SO
| Broche 1 | RA2/AN2/VREF — PORTA bit 2 / analog input / voltage reference |
| Broche 2 | RA3/AN3/CMP1 — PORTA bit 3 / analog input / comparator-1 output |
| Broche 3 | RA4/T0CKI — PORTA bit 4 / Timer0 clock input |
| Broche 4 | RA5/MCLR/VPP — PORTA bit 5 / Master Clear (reset) input / programming voltage |
| Broche 5 | VSS — Ground reference |
| Broche 6 | RB0/INT — PORTB bit 0 / external interrupt input |
| Broche 7 | RB1 — PORTB bit 1 |
| Broche 8 | RB2 — PORTB bit 2 |
| Broche 9 | RB3 — PORTB bit 3 |
| Broche 10 | RB4 — PORTB bit 4 |
| Broche 11 | RB5 — PORTB bit 5 |
| Broche 12 | RB6 — PORTB bit 6 / ICSP clock |
| Broche 13 | RB7 — PORTB bit 7 / ICSP data |
| Broche 14 | VDD — Positive supply (3.0 V - 3.6 V) |
| Broche 15 | OSC2/CLKOUT — Oscillator crystal output / clock-out |
| Broche 16 | OSC1/CLKIN — Oscillator crystal input / external clock in |
| Broche 17 | RA0/AN0 — PORTA bit 0 / analog input 0 |
| Broche 18 | RA1/AN1 — PORTA bit 1 / analog input 1 |
Applications typiques
PIC16LCE623-04E/SO convient pour 6 applications: White-Goods Appliance Control, Remote Keyless Entry Keyfobs, Industrial Sensor Interface Modules, Battery-Powered Indicator Circuits, Low-Cost Replacement of Discrete Logic, Automotive Cabin Accessories.
White-Goods Appliance Control
The PIC16LCE623-04E/SO suits washing machine, dishwasher and refrigerator control boards because its 13 I/O pins drive relays, triac optos and 7-segment displays directly without external logic. The 4 MHz clock and 35-instruction RISC core handle timing, sensor polling and user-input debouncing in a single-chip design. The OTP program memory prevents firmware reverse-engineering and the LC 3.3 V rail aligns with modern switch-mode supplies that already produce 3.3 V for digital logic, eliminating a regulator.
Recommandé
Remote Keyless Entry Keyfobs
Battery-powered keyfobs benefit from the PIC16LCE623-04E/SO's 3.0-3.6 V LC supply and low SLEEP-mode current. The 8-bit timer/counter and on-chip analog comparator support debounced button input and RF enable pulses, while the 13 I/O pins accommodate multi-button matrices and LED indicators. OTP memory ensures the rolling-code firmware cannot be read back, raising security in a cost-sensitive consumer product.
Recommandé
Industrial Sensor Interface Modules
In industrial 4-20 mA loop detectors and proximity-sensor interfaces the PIC16LCE623-04E/SO provides the on-chip analog comparator needed to threshold sensor signals, freeing the 13 I/O for indicator LEDs, H-bridge enable lines and isolated UART outputs. The extended -40 C to +125 C temperature grade suits factory-floor cabinets, and OTP memory locks the calibration constants against field tampering once the design is qualified.
Recommandé
Battery-Powered Indicator Circuits
Battery-powered fuel-gauges, low-battery alerts and self-powered safety sensors use the PIC16LCE623-04E/SO in SLEEP mode most of the time, waking on a comparator edge to drive an LED or piezo buzzer. The LC 3.3 V supply matches single-cell LiFePO4 or two-alkaline topologies directly, reducing quiescent losses and BOM cost. OTP memory protects the trip thresholds from external observation.
Recommandé
Low-Cost Replacement of Discrete Logic
Replacing 74HC00-series glue logic with a PIC16LCE623-04E/SO delivers up to 13 programmable I/O at lower PCB area and unit cost once volumes exceed a few thousand. Engineers can encode sequential state machines, timing patterns and conditional outputs in firmware rather than gates, accelerating design changes. The 18-SOIC footprint is also breadboard-friendly and easy to hand-prototype before committing to PCB layout.
Recommandé
Automotive Cabin Accessories
Although not AEC-Q100 qualified, the PIC16LCE623-04E/SO extended -40 C to +125 C grade fits non-safety cabin accessories such as ambient lighting controllers, vanity-mirror logic, and seat-position memory switches. The OTP memory and 3.3 V LC supply keep quiescent draw low on accessory rails, and the 13 I/O drive LED arrays and switch matrices without external muxing.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour PIC16LCE623-04E/SO — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | PIC16F628-04/SO | PIC16F627-04/SO | PIC16F628A-I/SO | PIC16F630-I/SO | PIC16F648A-I/SO |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 18-SOIC (7.50 mm) | 18-SOIC (7.50 mm) - same | 18-SOIC (7.50 mm) - same | 18-SOIC (7.50 mm) - same | 18-SOIC (7.50 mm) - same | 18-SOIC (7.50 mm) - same |
| Program Memory | 896 B (512 x 14) OTP | 2K x 14 Flash | 1K x 14 Flash | 2K x 14 Flash | 1K x 14 Flash | 4K x 14 Flash |
| Data RAM | 96 B | 224 B | 128 B | 224 B | 64 B | 256 B |
| Max Clock Frequency | 4 MHz | 4 MHz | 4 MHz | 20 MHz | 20 MHz | 20 MHz |
| Supply Voltage | 3.0 - 3.6 V (LC) | 3.0 - 5.5 V | 3.0 - 5.5 V | 2.0 - 5.5 V | 2.0 - 5.5 V | 2.0 - 5.5 V |
| Memory Type | OTP | Flash | Flash | Flash | Flash | Flash |
| I/O Pins | 13 | 16 | 16 | 16 | 12 | 16 |
| Operating Temperature | -40 C to +125 C | -40 C to +85 C (industrial) | -40 C to +85 C (industrial) | -40 C to +85 C (industrial) | -40 C to +85 C (industrial) | -40 C to +85 C (industrial) |
Principaux différenciateurs
- Lowest-cost 18-SOIC OTP mid-range PIC16 in 3.3 V LC family (vs PIC16F628-04/SO)
- Pin-compatible with full PIC16F62x flash family (vs PIC16F628A-I/SO)
- Includes on-chip analog comparator in 18-pin budget (vs PIC16F630-I/SO)
Notes de conception
Decouple the VDD pin (14) with a 100 nF ceramic capacitor placed within 5 mm of the package and tie the VSS pin (5) to a low-impedance ground pour. The PIC16LCE623-04E/SO LC variant requires 3.0 V to 3.6 V on VDD; running below 3.0 V risks brown-out reset, while exceeding 3.6 V violates the absolute-maximum rating. For battery applications add a bulk 10 uF tantalum or polymer capacitor to absorb regulator sag during RF bursts.
OTP program memory cannot be erased, so any firmware bug that ships to production becomes permanent. Develop and qualify the firmware on a flash-based PIC16F628 or PIC16F627 in the same 18-SOIC footprint, then commit to the OTP PIC16LCE623-04E/SO only after code-freeze. Always enable code-protection fuses (CP) before sealing the part to prevent optical or electrical read-back of firmware.
Route ICSP clock (RB6) and ICSP data (RB7) to a 5-pin header (VPP, VDD, VSS, RB6, RB7) using short, parallel traces. Keep the MCLR/VPP line free of large capacitance so the programmer can pull VPP above VDD quickly during programming. Place the crystal or resonator within 5 mm of OSC1/OSC2 with the load capacitors grounded to a quiet analog-style ground pour.
When using the on-chip analog comparator, isolate the analog input pins (RA0-RA3) from switching digital lines and add a small RC low-pass filter (1 kohm + 100 nF) on noisy sensor lines. The comparator can be a source of supply-current spikes that couple back into VDD; a 100 nF decoupling cap directly on VDD prevents this from triggering brown-out events.
Informations de conformité
RoHS / REACH / lead-free / halogen status not stated in the verified web data; specific lots may comply but confirmation from Microchip-direct or DigiKey product record is recommended. The part is not AEC-Q100 qualified; for safety-critical automotive systems select an AEC-Q100-qualified PIC16 variant. Last-time-buy lifecycle status implies future RoHS exemption via EOL is unlikely - confirm with Microchip.