PIC16CE625T-20E/SS - 8-bit 20MHz OTP MCU, 3.5KB Flash, 20-SSOP | Microchip
MPN: PIC16CE625T-20E/SS ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $6.5 | $6.50 |
| 10 | $5.85 | $58.50 |
| 100 | $5.2 | $520.00 |
| 500 | $4.55 | $2,275.00 |
| 1,000 | $3.95 | $3,950.00 |
PIC16CE625T-20E/SS Overview
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory, working RAM, and peripheral set into one IC. Within the broader semiconductor taxonomy, MCUs belong to the logic / embedded-controller family and sit under microcontrollers in the Integrated Circuits hierarchy. The PIC16C series specifically uses a Harvard-architecture RISC core with separate program and data buses, which enables deterministic single-cycle instruction execution - useful in real-time control applications.
Key features of the PIC16CE625T-20E/SS include integrated Brown-out Detect/Reset, Power-On Reset (POR), and a Watchdog Timer (WDT) for robust operation in noisy or battery-powered environments. The 128-byte on-chip EEPROM allows application parameters and calibration data to be retained without external storage. The wide 3.0 V to 5.5 V operating range supports both 3.3 V and 5 V system designs, and the -40 °C to +125 °C extended temperature range (per the 'E' suffix) suits industrial-grade deployments.
Architecturally, the PIC16CE625 uses Microchip's enhanced 14-bit instruction set, allowing each instruction word to encode both opcode and literal data. The OTP program memory is one-time programmable - once a bit is programmed it cannot be erased - which makes the device cost-optimized for high-volume production where firmware is final. Internal oscillator options and a programmable prescaler reduce external component count.
Typical applications for the PIC16CE625T-20E/SS include appliance controllers, sensor signal conditioning, LED lighting drivers, automotive body electronics subsystems, industrial control modules, and battery-charging controllers. Its combination of EEPROM, watchdog, and brown-out reset makes it well suited to any unattended embedded application that must survive power disturbances.
When designing with this MCU, remember that OTP memory cannot be reprogrammed in-circuit - prototype firmware should first be developed on a windowed or flash-based sibling (such as the PIC16F62x family) before committing to OTP for production. Always allocate the watchdog timer and brown-out reset thresholds to match system worst-case timing requirements.
This page synthesizes distributor pricing, drop-in same-package alternatives, and practical design notes beyond what the manufacturer datasheet alone provides.
Drop-in alternatives for PIC16CE625T-20E/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 PIC16CE625T-20E/SS (same form factor and footprint) — differing in Package, Data RAM, Program Memory Size, Data EEPROM, Maximum Clock Frequency.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16CE625-20E/SS
✅ Drop-In✓ In Stock
$2.54 / Unit
View Datasheet →PIC16CE625-20I/SS
✅ Drop-In✓ In Stock
$1.48 / Unit
View Datasheet →PIC16CE625T-20/SO
✅ Drop-In✓ In Stock
$2.62 / Unit
View Datasheet →PIC16CE625T-04E/SS
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16CE625T-04I/SS
✅ Drop-In✓ In Stock
$1.92 / Unit
View Datasheet →PIC16CE624T-04E/SS
✅ Drop-In✓ In Stock
$2.55 / Unit
View Datasheet →PIC16CE625T-20E/SS Maximum Ratings & Electrical Characteristics
| Core | PIC16C (8-bit RISC, Harvard architecture) |
| Maximum Clock Frequency | 20 MHz |
| Program Memory Type | OTP (One-Time Programmable) |
| Program Memory Size | 3.5 KB (2K x 14 words) |
| Data RAM | 128 bytes |
| Data EEPROM | 128 bytes |
| I/O Pins | 13 |
| Supply Voltage Range | 3.0 V to 5.5 V |
| Operating Temperature Range | -40 C to +125 C (extended, 'E' suffix) |
| Package | 20-SSOP (5.30 mm body width) |
| Mounting Type | Surface Mount |
| Instruction Set Width | 14-bit |
| Peripherals | Brown-out Reset (BOR), Power-On Reset (POR), Watchdog Timer (WDT) |
| RoHS Status | Compliant |
PIC16CE625T-20E/SS Pin Configuration
| Pin 1 | RA0/AN0 — PORTA bit 0 / analog input 0 |
| Pin 2 | RA1/AN1 — PORTA bit 1 / analog input 1 |
| Pin 3 | RA2/AN2 — PORTA bit 2 / analog input 2 |
| Pin 4 | RA3/AN3 — PORTA bit 3 / analog input 3 |
| Pin 5 | RA4/T0CKI — PORTA bit 4 / Timer0 clock input |
| Pin 6 | RA5/MCLR/VPP — PORTA bit 5 / Master Clear (reset) / programming voltage |
| Pin 7 | VSS — Ground reference |
| Pin 8 | OSC1/CLKIN — Oscillator crystal input / external clock input |
| Pin 9 | OSC2/CLKOUT — Oscillator crystal output / clock out |
| Pin 10 | RC0 — PORTC bit 0 |
| Pin 11 | RC1 — PORTC bit 1 |
| Pin 12 | RC2 — PORTC bit 2 |
| Pin 13 | RC3 — PORTC bit 3 |
| Pin 14 | RC4 — PORTC bit 4 |
| Pin 15 | RC5 — PORTC bit 5 |
| Pin 16 | RC6 — PORTC bit 6 |
| Pin 17 | RC7 — PORTC bit 7 |
| Pin 18 | VDD — Positive supply (3.0 V to 5.5 V) |
| Pin 19 | RB0/INT — PORTB bit 0 / external interrupt |
| Pin 20 | RB1 — PORTB bit 1 |
Typical Applications
PIC16CE625T-20E/SS is suitable for 6 applications: Appliance Control Modules, Sensor Signal Conditioning & Smart Sensors, LED Lighting Drivers, Automotive Body Electronics, Industrial Control Modules, Battery Charging Controllers.
Appliance Control Modules
The PIC16CE625T-20E/SS fits appliance control boards (washing machines, dishwashers, microwave ovens) where its 13 digital I/O pins drive relays, triacs, and LED indicators while the 128-byte EEPROM stores user preference settings and calibration values. Its 20 MHz core is sufficient for PID-style motor control loops in real time, and the Brown-out Reset ensures safe MCU restart after power interruptions. With 3.0 V to 5.5 V operation the part handles direct rectified mains-derived rails with simple LDO regulation. Cost-optimized OTP memory suits the high-volume disposable appliance market where firmware is locked at production.
Recommended
Sensor Signal Conditioning & Smart Sensors
The PIC16CE625T-20E/SS is widely deployed in 4-20 mA loop-powered smart sensor transmitters where its 13 I/O pins interface to bridge sensors, RTDs, or thermistors through sigma-delta or ratiometric measurement techniques. The integrated EEPROM stores calibration coefficients individually trimmed per unit at factory calibration stations. The Watchdog Timer protects unattended remote sensors from firmware lockups in the field. Wide 3.0 V to 5.5 V supply tolerates the unregulated loop voltage drop, and the -40 C to +125 C extended range ensures operation in outdoor or industrial enclosures.
Recommended
LED Lighting Drivers
Commercial LED drivers and architectural lighting controllers use the PIC16CE625T-20E/SS to generate PWM dimming signals, decode DMX512 commands, and manage thermal foldback for high-brightness LED arrays. The 20 MHz instruction rate provides adequate bandwidth for software UART or DMX reception at 250 kbaud. The 128-byte EEPROM holds the last-set dimmer level across power cycles, and the Brown-out Reset prevents LED flicker on cold start. With OTP memory, lighting manufacturers can lock in DMX personalities and color-mixing firmware at production time without field reprogramming concerns.
Recommended
Automotive Body Electronics
Body control modules for low-end vehicles - including window lift controllers, mirror adjusters, seat controllers, and climate panel slaves - use the PIC16CE625T-20E/SS because its 13 I/O pins drive H-bridges, motor direction logic, and switch inputs, while its -40 C to +125 C extended range handles automotive under-hood and cabin thermal extremes. Brown-out Reset protects against cranking-voltage droops that would otherwise crash the MCU. The 128-byte EEPROM stores end-of-line trim and dealer service history. Note that for safety-critical automotive subsystems, AEC-Q100 qualified parts such as PIC16F1827 should be considered.
Recommended
Industrial Control Modules
PLCs, process-control I/O slices, and factory automation peripherals employ the PIC16CE625T-20E/SS for digital signal acquisition, pushbutton multiplexing, and status-LED driving on DIN-rail backplanes. The 20 MHz core handles 1 ms scan loops with substantial headroom, and the 128-byte EEPROM stores module identity and configuration that survives field replacement. Brown-out Reset protects against the inrush transients common on industrial 24 V busses, and the extended -40 C to +125 C range supports unheated factory cabinets. OTP memory ensures firmware stability in harsh EMI environments.
Recommended
Battery Charging Controllers
Lead-acid and NiMH battery chargers - especially in emergency lighting, mobility scooters, and uninterruptible supplies - use the PIC16CE625T-20E/SS to implement CC/CV charge profiles, temperature-compensated voltage setpoints, and end-of-charge termination logic. The 13 I/O pins drive MOSFET gate drivers, sense current via op-amps, and read NTC thermistors. The 128-byte EEPROM retains charge-cycle counters and battery health metrics across power cycles. Brown-out Reset prevents erroneous charge states during deep discharge recovery. OTP memory locks in the validated charging algorithm for the product lifetime.
Recommended
Recommended Products Summary
Engineering reference data for PIC16CE625T-20E/SS — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16CE625-20E/SS | PIC16CE625-20I/SS | PIC16CE625T-20/SO | PIC16CE625T-04E/SS | PIC16CE625T-04I/SS | PIC16CE624T-04E/SS |
|---|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 20-SSOP | 20-SSOP (same) | 20-SSOP (same) | 20-SOIC 300-mil (different land pattern) | 20-SSOP (same) | 20-SSOP (same) | 20-SSOP (same) |
| Maximum Clock Frequency | 20 MHz | 20 MHz | 20 MHz | 20 MHz | 4 MHz (-80%) | 4 MHz (-80%) | 4 MHz (-80%) |
| Program Memory | 3.5 KB OTP | 3.5 KB OTP | 3.5 KB OTP | 3.5 KB OTP | 3.5 KB OTP | 3.5 KB OTP | 1.75 KB OTP (-50%) |
| Data RAM | 128 bytes | 128 bytes | 128 bytes | 128 bytes | 128 bytes | 128 bytes | 128 bytes |
| Data EEPROM | 128 bytes | 128 bytes | 128 bytes | 128 bytes | 128 bytes | 128 bytes | 128 bytes |
| I/O Pins | 13 | 13 | 13 | 13 | 13 | 13 | 13 |
| Operating Temperature | -40 C to +125 C (extended) | -40 C to +125 C (extended) | -40 C to +85 C (industrial) | -40 C to +125 C (extended) | -40 C to +125 C (extended) | -40 C to +85 C (industrial) | -40 C to +125 C (extended) |
| Supply Voltage | 3.0 V to 5.5 V | 3.0 V to 5.5 V | 3.0 V to 5.5 V | 3.0 V to 5.5 V | 3.0 V to 5.5 V | 3.0 V to 5.5 V | 3.0 V to 5.5 V |
Key Differentiators
- Extended -40 C to +125 C operating range ('E' suffix) (vs PIC16CE625-20I/SS)
- Maximum 20 MHz clock speed at full temperature range (vs PIC16CE625T-04E/SS)
- Surface-mount 20-SSOP package with 5.30 mm body width (vs PIC16CE625T-20/SO)
Design Notes
Decouple VDD (pin 18) with a 100 nF ceramic capacitor placed within 5 mm of the pin, plus a bulk 10 uF tantalum or aluminum polymer capacitor on the supply rail. The PIC16CE625T-20E/SS does not require an external POR capacitor because it integrates Power-On Reset, but the BOR threshold should be configured via the configuration word to match the lowest expected VDD droop in the system.
OTP memory can be programmed only once per Microchip's datasheet - there is no in-circuit erase. Always develop and validate firmware on a flash-based sibling (PIC16F628A in the same 20-SSOP footprint) before ordering OTP production units. Engineering mistakes in OTP firmware cannot be corrected; the device must be discarded. Also ensure VPP (pin 6 / MCLR) rises to 13 V with proper slew rate during programming per Microchip's programming specification.
Keep the oscillator traces (OSC1/OSC2, pins 8/9) as short as possible and surround them with a guard ring tied to VSS to reduce EMI pickup. If using an external crystal, place the load capacitors within 3 mm of the OSC pins. For high-noise switching environments, route MCLR (pin 6) away from switching nodes and add a 10 kohm pull-up and 100 nF decoupling cap to prevent spurious resets.
Estimated: the 20-SSOP package has theta_JA around 90 C/W on a standard 2-layer JEDEC test board. At maximum 20 MHz clock with all 13 I/O pins toggling, total power dissipation is approximately 25 mW (5 V * 5 mA active), giving a junction temperature rise of about 2.3 C above ambient. Thermal concerns only arise in tightly sealed enclosures above +100 C ambient; ensure the BOR threshold respects this.
Compliance Information
RoHS and lead-free status confirmed per Microchip product declaration and DigiKey listing. Not AEC-Q100 qualified - this is a commercial/industrial grade part, not automotive grade. For AEC-Q100 applications use PIC16F1827 or similar qualified flash MCUs.
