PIC16LCE625T-04/SS - 8-Bit 4MHz OTP MCU 3.5KB | 20-SSOP | Microchip
MPN: PIC16LCE625T-04/SS ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $3.18 | $3.18 |
| 10 | $2.86 | $28.60 |
| 100 | $2.45 | $245.00 |
| 500 | $2.12 | $1,060.00 |
| 1,000 | $1.85 | $1,850.00 |
PIC16LCE625T-04/SS Overview
A microcontroller (MCU) is a single-chip computer containing a CPU core, non-volatile program memory, working RAM, and programmable I/O peripherals. The PIC16C family uses a Harvard architecture that separates program and data memory buses, allowing simultaneous instruction fetch and operand access - this contributes to the family's reputation for deterministic execution and efficient code density. Within the broader taxonomy, the PIC16LCE625 belongs to: PIC16 family -> PIC16C sub-family -> PIC microcontroller -> 8-bit MCU -> embedded controller -> semiconductor IC. PIC MCUs remain widely deployed in cost-sensitive and low-power embedded designs.
Key features of the PIC16LCE625 include an instruction set of only 35 single-word instructions, an 8-level hardware stack, in-circuit serial programming (ICSP) capability, programmable code protection, power-saving SLEEP mode with wake-up via interrupt, and an internal oscillator option on selected family members. The device supports both internal and external oscillator modes (LP, XT, HS, RC) for flexible clock configuration across 2.0-6.0 V operation.
The PIC16LCE625's RISC core executes most instructions in a single instruction cycle (4 oscillator clocks), giving an effective throughput close to 1 MIPS at 4 MHz. This efficiency, combined with low quiescent current (under 1 mA active, single-digit µA in SLEEP), makes it attractive for battery-powered and energy-harvesting applications.
Typical applications include appliance controls, security and alarm panels, remote transmitters, sensor signal conditioning front-ends, low-end motor control, smoke and CO detectors, and consumer white goods. The on-chip analog comparator supports simple threshold detection without an external op-amp, useful for battery-voltage monitoring or photodiode interfaces.
When designing with this part, note that OTP memory can be programmed only once - engineering prototypes typically use a windowed (UV-erasable) CERDIP variant for iteration. Decoupling VDD with 100 nF plus 10 µF bulk, and placing a 10 kΩ pull-up on MCLR, are standard layout practices.
This page synthesizes current distributor pricing, drop-in pin-compatible alternatives within the PIC16LC family, and practical design notes that complement the manufacturer datasheet with information-gain on supply and selection.
Drop-in alternatives for PIC16LCE625T-04/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 PIC16LCE625T-04/SS (same form factor and footprint) — differing in Core Architecture, Package, Program Memory Size, I/O Pins, EEPROM Data Memory.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16LCE625T-04I/SS
✅ Drop-In✓ In Stock
$4.1 / Unit
View Datasheet →PIC16LCE625-04E/SS
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16LCE624T-04/SS
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16LCE624T-04I/SS
✅ Drop-In✓ In Stock
$1.95 / Unit
View Datasheet →PIC16LCE624-04E/SS
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16LCE623T-04/SO
✅ Drop-In✓ In Stock
$1.49 / Unit
View Datasheet →PIC16LCE624T-04E/SS
✅ Drop-In✓ In Stock
$2.45 / Unit
View Datasheet →PIC16LCE624-04/SS
✅ Drop-In✓ In Stock
$1.85 / Unit
View Datasheet →PIC16LCE625T-04/SS Maximum Ratings & Electrical Characteristics
| Product Series | PIC16C |
| Core Architecture | 8-bit PIC RISC (Harvard) |
| Family | PIC16LC (low-power CMOS) |
| Maximum Clock Speed | 4 MHz |
| Program Memory Type | OTP (One-Time Programmable) |
| Program Memory Size | 3.5 KB (2K x 14) |
| RAM Size | 128 bytes (128 x 8) |
| Data EEPROM | Not present |
| Supply Voltage (VDD) | 2.0 V to 6.0 V |
| I/O Pins | 13 (bidirectional) |
| Package | 20-SSOP (0.209", 5.30 mm width) |
| Mounting Type | Surface Mount |
| Operating Temperature | 0°C to +70°C (commercial) |
| Instruction Set | 35 single-word instructions |
| Hardware Stack | 8 levels |
| On-chip Peripherals | Comparator, WDT, Timer0, Brown-out Reset |
| Packaging Format | Tape & Reel (T suffix) |
| RoHS Status | Compliant |
PIC16LCE625T-04/SS Pin Configuration
| Pin 1 | RA2/AN2/CVREF — Port A bit 2 / analog input 2 / comparator reference output |
| Pin 2 | RA3/AN3/C1OUT — Port A bit 3 / analog input 3 / comparator 1 output |
| Pin 3 | RA4/T0CKI — Port A bit 4 / Timer0 clock input |
| Pin 4 | RA5/MCLR/VPP — Port A bit 5 / Master Clear (reset) / programming voltage |
| Pin 5 | VSS — Ground reference |
| Pin 6 | RB0/INT — Port B bit 0 / external interrupt input |
| Pin 7 | RB1 — Port B bit 1 |
| Pin 8 | RB2 — Port B bit 2 |
| Pin 9 | RB3 — Port B bit 3 |
| Pin 10 | RB4 — Port B bit 4 |
| Pin 11 | RB6 — Port B bit 6 / ICSP clock |
| Pin 12 | RB7 — Port B bit 7 / ICSP data |
| Pin 13 | VSS — Ground (digital) |
| Pin 14 | VDD — Positive supply voltage |
| Pin 15 | OSC2/CLKOUT — Oscillator output / clock output |
| Pin 16 | OSC1/CLKIN — Oscillator input / external clock input |
| Pin 17 | RA0/AN0 — Port A bit 0 / analog input 0 |
| Pin 18 | RA1/AN1 — Port A bit 1 / analog input 1 |
| Pin 19 | RC0 — Port C bit 0 (if implemented) |
| Pin 20 | RC1 — Port C bit 1 (if implemented) |
Typical Applications
PIC16LCE625T-04/SS is suitable for 7 applications: Battery-Powered Remote Control / Wireless Transmitter, Security and Alarm Panel Control, Smoke and CO Detector Front-End, Consumer Appliance User Interface, Industrial Sensor Signal Conditioning, Low-End Motor Driver Control, Smart Metering and Sub-Metering.
Battery-Powered Remote Control / Wireless Transmitter
The PIC16LCE625T-04/SS fits battery-powered remote controls and wireless transmitters because its low-power CMOS core delivers under 1 mA active current and single-digit microamp SLEEP current at 2.0 V to 6.0 V supply. With 3.5 KB of OTP program memory and 13 I/O pins, it has ample code and pin budget to drive RF encoder ICs, scan a matrix keypad, and wake on interrupt for button events. The on-chip comparator enables battery-voltage monitoring without a separate op-amp, extending cell life in coin-cell designs. Compared with Flash alternatives, OTP reduces unit cost in high-volume consumer transmitters.
Recommended
Security and Alarm Panel Control
The PIC16LCE625T-04/SS is widely deployed in security panels, PIR motion detectors, and alarm keypads because its 4 MHz PIC16C core provides deterministic 1-MIPS execution for sensor polling and event handling. The 13 I/O pins easily interface to reed switches, PIR sensors, piezo buzzers, and LED indicators, while the internal WDT and brown-out reset guard against lockup during brown-out or EMI events on long cable looms. OTP programming at factory production prevents firmware tampering, an advantage over Flash for security applications.
Recommended
Smoke and CO Detector Front-End
The PIC16LCE625T-04/SS serves as the controller in smoke and CO detector front-ends because its analog comparator directly handles the ionization-chamber or electrochemical-sensor signal without an external op-amp. The 2.0 V minimum supply supports 9 V battery backup after the alkaline cell droops. Its 3.5 KB OTP program memory fits UL 217 / EN 14604 compliance code, horn-driver sequencing, and self-test routines. Low active current preserves battery life while the comparator continuously monitors the sensor chamber.
Recommended
Consumer Appliance User Interface
The PIC16LCE625T-04/SS is well-matched to consumer-appliance user-interface boards (washing machines, microwave ovens, dishwashers) where 3.5 KB OTP holds the user-menu code, the 13 I/O pins drive 7-segment displays and scan capacitive or mechanical keypads, and the 2.0 V to 6.0 V supply tolerates rectified 5 V or 3.3 V rails directly. OTP programming at production line volume enables sub-dollar unit cost - a key advantage versus Flash parts. Hardware stack depth and WDT simplify long-running control loops.
Recommended
Industrial Sensor Signal Conditioning
The PIC16LCE625T-04/SS provides low-cost signal conditioning in industrial sensors where its internal comparator performs threshold detection on a 4-20 mA loop-derived voltage or thermistor bridge, and its 3.5 KB OTP holds calibration tables and linearization code. With 2.0 V to 6.0 V supply and industrial -40°C to +85°C variants in the same family, it tolerates plant-floor conditions. The SSOP package saves PCB real estate inside compact sensor heads.
Recommended
Low-End Motor Driver Control
The PIC16LCE625T-04/SS handles brushed-DC and small stepper motor control loops in printers, fans, and toys where 3.5 KB OTP holds commutation tables, ramp profiles, and fault-detection code. Its 13 I/O pins drive direction logic, enable lines, and Hall-sensor inputs, while the internal WDT recovers from stall conditions. OTP reduces cost in motor-control consumer products where firmware rarely changes after release. The 20-SSOP footprint allows tight PCB integration next to the driver stage.
Recommended
Smart Metering and Sub-Metering
The PIC16LCE625T-04/SS fits smart-meter and sub-metering front-ends because its analog comparator directly senses zero-cross of the AC line for power-factor measurement, while the 3.5 KB OTP holds calibration, anti-tamper logic, and LCD-segment drive timing. Its 2.0 V minimum supply survives low-line brown-out and backup-battery operation. OTP programming at the meter factory prevents firmware tampering, an advantage for utility-grade products. SSOP packaging suits dense meter PCBs.
Recommended
Recommended Products Summary
Engineering reference data for PIC16LCE625T-04/SS — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16LCE625T-04I/SS | PIC16LCE625-04E/SS | PIC16LCE624T-04/SS | PIC16LCE624T-04I/SS | PIC16LCE623T-04/SO |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 20-SSOP | 20-SSOP | 20-SSOP | 20-SSOP | 20-SSOP | 20-SOIC |
| Program Memory | 3.5 KB (2K x 14) OTP | 3.5 KB (2K x 14) OTP | 3.5 KB (2K x 14) OTP | 1.75 KB (1K x 14) OTP | 1.75 KB (1K x 14) OTP | 0.875 KB (512 x 14) OTP |
| RAM Size | 128 bytes | 128 bytes | 128 bytes | 128 bytes | 128 bytes | 96 bytes |
| Maximum 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 | 2.0 V to 6.0 V |
| Operating Temperature | 0C to +70C (commercial) | -40C to +85C (industrial) | 0C to +70C (commercial) | 0C to +70C (commercial) | -40C to +85C (industrial) | 0C to +70C (commercial) |
| Packaging Format | Tape & Reel | Tape & Reel | Tube | Tape & Reel | Tape & Reel | Tape & Reel |
| I/O Pins | 13 | 13 | 13 | 13 | 13 | 13 |
Key Differentiators
- Larger program memory within the PIC16LC625 footprint (vs PIC16LCE624T-04/SS)
- Enhanced analog comparator ('E' suffix feature set) (vs PIC16LC620AT-04E/SS)
- Industrial temperature grade option in same package (vs PIC16LCE625T-04/SS)
Design Notes
Place a 100 nF decoupling capacitor as close as possible to the VDD pin (pin 14) on the PIC16LCE625T-04/SS. Add a 10 µF bulk tantalum or aluminum electrolytic capacitor on the same supply rail to suppress transient loads when the internal comparator switches. For 3.3 V operation, ensure the regulator tolerance stays within 2.0 V to 6.0 V at all load steps. Brown-out reset must be enabled in configuration bits to ensure clean startup below the configured threshold.
Do not assume OTP parts support re-flashing. The PIC16LCE625T-04/SS OTP memory can be programmed only once via ICSP. For development and prototype iteration, use a windowed CERDIP variant (e.g., PIC16C625 JW) or a pin-compatible Flash part such as PIC16F84A. Programming MCLR/VPP requires a high-voltage (typically 13.4 V) pulse; design the ICSP header so the production programmer can access MCLR, VDD, VSS, RB6 (clock), and RB7 (data) pins without isolation circuitry in the way.
Keep the ICSP traces (MCLR, RB6, RB7) short and away from high-current switching nodes to prevent programming failures on production line. Place a 10 kΩ pull-up resistor on MCLR/VPP per PIC16C family recommendations; do not leave MCLR floating. The 20-SSOP footprint requires careful pad design - SSOP lead coplanarity is critical for reliable solder joints, especially in high-vibration appliance or industrial environments.
Estimated: At 4 MHz clock, 5 V supply, and typical active current of 2 mA, the PIC16LCE625T-04/SS dissipates roughly 10 mW of internal power - negligible thermal stress on the 20-SSOP package (theta_JA approximately 100 C/W for SSOP). No special thermal management is required. However, in sealed enclosures above +60C ambient, derate to industrial-grade PIC16LCE625T-04I/SS for reliability margin. SLEEP mode current typically drops below 5 µA at 3 V.
Compliance Information
RoHS compliance confirmed per Microchip product page. Halogen-free status not stated in provided data - marked unknown. AEC-Q100 not applicable; this is a general-purpose MCU not automotive-qualified (commercial and industrial grades only).
