PIC16CE623T-04E/SO - 4MHz 8-Bit OTP MCU w/EEPROM | Microchip
MPN: PIC16CE623T-04E/SO ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $3.95 | $3.95 |
| 10 | $3.55 | $35.50 |
| 100 | $3.18 | $318.00 |
| 500 | $2.85 | $1,425.00 |
| 1,000 | $2.55 | $2,550.00 |
PIC16CE623T-04E/SO Overview
A microcontroller (MCU) is a single-chip computer that integrates a CPU, RAM, program memory, peripherals, and I/O on one die; 8-bit MCUs like the PIC16CE623T are a sub-family optimized for low cost, deterministic real-time response, and ease of programming, sitting at the low-power end of the broader microcontroller taxonomy that extends upward to 16-bit and 32-bit Cortex-M-class devices. This category of MCU is widely used in appliances, automotive body modules, sensor interfaces, and industrial controls where cost per unit matters more than raw compute.
Key features include 13 digital I/O pins, an internal oscillator option, an on-chip watchdog timer for unattended operation, power-saving SLEEP mode, an analog comparator, and a programmable code-protection mechanism to lock the OTP memory. The 18-SOIC package is industry standard, easing hand-prototyping and high-volume reflow assembly alike. Operating temperature range is industrial-grade (-40°C to +125°C), suiting outdoor enclosures and automotive cabin environments.
Architecturally, the PIC16CE623T uses a Harvard memory layout with separate program and data buses, a single accumulator-based working register (W), and a small register file. The EEPROM peripheral is byte-addressable and tolerates at least 1 million erase/write cycles, well above what is needed for storing tuning constants in a sensor module or serial number for an asset tracker.
Typical applications include low-cost remote controls, battery-powered sensor transmitters, automotive accessory controllers, appliance user-interface boards, and white-goods motor drivers. The integrated EEPROM and watchdog are particularly useful in safety-relevant systems such as smoke detectors and security keypads where field-recoverable faults must not lock the unit.
When designing in the PIC16CE623T-04E/SO, pay attention to the OTP-only memory: firmware revisions require a new device, so commit firmware early. Decouple VDD with a 100 nF ceramic cap placed within 5 mm of the pin, and reserve the MCLR pin for a proper reset circuit to avoid brown-out misbehaviour. Because the part is in active production but using an older 16C core, designers migrating to ongoing programs should evaluate the Flash-based PIC16F630 family for new designs.
This page synthesizes distributor stock data, same-family pin-compatible PIC alternatives, and practical design considerations not consolidated on any single manufacturer or distributor page.
Drop-in alternatives for PIC16CE623T-04E/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 PIC16CE623T-04E/SO (same form factor and footprint) — differing in Package, Program Memory Size, Core Architecture, Operating Temperature, Instruction Cycle Time.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16CE623-04I/SO
✅ Drop-In ⚠️ 参数待验证✓ In Stock
$1.31 / Unit
View Datasheet →PIC16CE623-20/SO
✅ Drop-In ⚠️ 参数待验证✓ In Stock
$0.87 / Unit
View Datasheet →PIC16CE623-04I/SS
✅ Drop-In ⚠️ 参数待验证✓ In Stock
$1.45 / Unit
View Datasheet →PIC16CE623T-04/SO
✅ Drop-In✓ In Stock
$1.85 / Unit
View Datasheet →PIC16F630-I/SO
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16CE623-30/SO
✅ Drop-In ⚠️ 参数待验证✓ In Stock
$3.32 / Unit
View Datasheet →PIC16CE623T-04E/SO Maximum Ratings & Electrical Characteristics
| Core Architecture | PIC 16C (8-bit RISC, Harvard) |
| Instruction Set | 35 single-word instructions |
| Program Memory Type | OTP (One-Time Programmable) |
| Program Memory Size | 896 bytes (512 x 14 bits) |
| RAM | 96 bytes |
| EEPROM Data Memory | 128 bytes |
| Maximum Clock Frequency | 4 MHz |
| Instruction Cycle Time | 200 ns (single cycle) |
| Supply Voltage (VDD) | 3.0 V to 5.5 V |
| I/O Pins | 13 |
| Package | 18-SOIC (0.295 in / 7.50 mm body width) |
| Mounting Type | Surface Mount |
| Operating Temperature | -40 °C to +125 °C |
| Internal Oscillator | Yes |
| Watchdog Timer | Yes |
| On-Chip Peripherals | Analog comparator, EEPROM, timers, SLEEP mode |
| RoHS Status | Compliant (per Microchip product page) |
PIC16CE623T-04E/SO Pin Configuration
| Pin 1 | RA2 — Bidirectional I/O port A bit 2 |
| Pin 2 | RA3 — Bidirectional I/O port A bit 3 |
| Pin 3 | RA4/T0CKI — Bidirectional I/O / Timer0 clock input |
| Pin 4 | MCLR — Master clear reset input (active low) |
| Pin 5 | VSS — Ground reference |
| Pin 6 | RB0/INT — Bidirectional I/O port B bit 0 / external interrupt |
| Pin 7 | RB1 — Bidirectional I/O port B bit 1 |
| Pin 8 | RB2 — Bidirectional I/O port B bit 2 |
| Pin 9 | RB3 — Bidirectional I/O port B bit 3 |
| Pin 10 | RB4 — Bidirectional I/O port B bit 4 |
| Pin 11 | RB5 — Bidirectional I/O port B bit 5 |
| Pin 12 | RB6 — Bidirectional I/O port B bit 6 |
| Pin 13 | RB7 — Bidirectional I/O port B bit 7 |
| Pin 14 | VDD — Positive supply (3.0-5.5 V) |
| Pin 15 | OSC2/CLKOUT — Crystal/ceramic resonator output or clock out |
| Pin 16 | OSC1/CLKIN — Crystal/ceramic resonator input or external clock in |
| Pin 17 | RA0 — Bidirectional I/O port A bit 0 |
| Pin 18 | RA1 — Bidirectional I/O port A bit 1 |
Typical Applications
PIC16CE623T-04E/SO is suitable for 7 applications: Remote Control Transmitter, Battery-Powered Sensor Node, Automotive Accessory Controller, Appliance User Interface Board, Smoke Detector and Safety Sensor, Industrial Sensor Interface Module, White-Goods Motor Speed Controller.
Remote Control Transmitter
The PIC16CE623T-04E/SO is well-suited for handheld IR/RF remote controls because its 13 GPIO can drive a key matrix and an IR LED without external glue logic, while the 4 MHz clock and 200 ns instruction cycle give plenty of throughput for protocol encoding. The 128-byte EEPROM stores learned-device codes and pairing keys across power cycles, eliminating the need for an external EEPROM part. SLEEP mode at microamp-level quiescent current lets battery remotes last several years on two AA cells, and the 3.0-5.5 V supply tolerates sagging alkaline batteries without resetting the controller. Pin compatibility with the Flash-based PIC16F630 also lets designers migrate to reprogrammable firmware for late-stage feature additions.
Recommended
Battery-Powered Sensor Node
For wireless sensor nodes reporting temperature, humidity, or occupancy, the PIC16CE623T-04E/SO offers an optimal balance of low cost and the integrated 128-byte EEPROM that retains calibration data when the battery is removed. The internal oscillator removes the need for an external crystal, shrinking the BOM and reducing quiescent draw in SLEEP mode. The 4 MHz clock is more than enough to drive an SPI-attached sensor and format packets before waking the radio; its 3.0-5.5 V range works directly from two alkaline or a single lithium cell. Watchdog timer plus brown-out reset keep the node from latching up in unattended deployments.
Recommended
Automotive Accessory Controller
In body-electronics modules such as mirror controllers, seat-position memories, or aftermarket alarm interfaces, the PIC16CE623T-04E/SO's -40 °C to +125 °C operating range and 13 GPIO match the automotive cabin environment. The integrated EEPROM stores trim settings and user preferences without an external serial memory, and the analog comparator on-chip enables simple current-sense monitoring of actuator lines. Its 18-SOIC package reflows cleanly on standard lead-free profiles. While the OTP-only memory commits firmware at production, the same-family PIC16F630 in 18-SOIC serves as a pin-compatible Flash alternative when field updates are required.
Recommended
Appliance User Interface Board
White-goods user-interface boards - washing-machine keypads, microwave displays, dishwasher timers - benefit from the PIC16CE623T-04E/SO's 13 GPIO for scanning 4x4 key matrices and driving LED or 7-segment indicators directly. The 4 MHz clock keeps display refresh snappy while the SLEEP mode drops power to microamps between key presses. The 128-byte EEPROM holds cycle counters and last-used settings across power interruptions, and the wide 3.0-5.5 V supply allows direct connection to a rectified 5 V or 12 V rail with a small linear regulator. Industrial temperature grade tolerates the heat inside a dryer or oven-control panel.
Recommended
Smoke Detector and Safety Sensor
Safety-critical devices like smoke and CO detectors rely on the PIC16CE623T-04E/SO's integrated watchdog timer and brown-out reset to recover from supply glitches without locking up the alarm. The 4 MHz core runs the sensor-sampling loop with headroom to spare for self-diagnostic routines, while the 128-byte EEPROM logs last-event timestamps and battery-test history. The 18-SOIC package reflows on standard profiles and the -40 to +125 °C rating covers attic and garage installations. The PIC16CE623T's deterministic single-cycle 200 ns execution supports the tight timing required for horn-pattern generation without jitter.
Recommended
Industrial Sensor Interface Module
Industrial 4-20 mA loop sensors and isolated transducer interfaces use the PIC16CE623T-04E/SO to digitize analog inputs, linearize the curve in firmware, and output either an HART-style modulation or a digital bus reading. The internal analog comparator and 13 GPIO handle multiplexed input selection without external op-amps, while the 128-byte EEPROM retains calibration coefficients per channel. The industrial -40 to +125 °C operating range tolerates cabinet mounting near motors, and the 18-SOIC footprint allows hand-repair on legacy boards. For new designs the pin-compatible PIC16F630-I/SO with Flash memory offers the same I/O and footprint while allowing late firmware revisions.
Recommended
White-Goods Motor Speed Controller
Low-cost universal-motor speed controllers in fans, blenders, and small pumps pair naturally with the PIC16CE623T-04E/SO. The on-chip analog comparator implements zero-cross detection of the AC line for TRIAC phase-angle firing without an external zero-cross IC, while the 13 GPIO handle keypad input, RPM tachometer feedback, and TRIAC gate drive. The integrated EEPROM remembers the user's last-selected speed, and SLEEP mode between button events keeps standby power below regulatory limits. Industrial temperature rating handles the heat inside a sealed motor housing, and 18-SOIC packaging eases both hand and reflow assembly.
Recommended
Recommended Products Summary
Engineering reference data for PIC16CE623T-04E/SO — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16CE623-04I/SO | PIC16CE623-20/SO | PIC16F630-I/SO |
|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 18-SOIC | 18-SOIC - same | 18-SOIC - same | 18-SOIC - same |
| Program Memory Type | OTP (896 B / 512 x 14) | OTP (896 B / 512 x 14) | OTP (896 B / 512 x 14) | Flash (1024 words x 14) - rewritable |
| Maximum Clock | 4 MHz | 4 MHz | 20 MHz | 20 MHz |
| RAM | 96 B | 96 B | 96 B | 64 B |
| EEPROM | 128 B | 128 B | 128 B | 128 B |
| I/O Pins | 13 | 13 | 13 | 12 |
| Supply Voltage | 3.0 - 5.5 V | 3.0 - 5.5 V | 3.0 - 5.5 V | 2.0 - 5.5 V |
| Temperature Range | -40 to +125 °C | -40 to +85 °C (industrial) | 0 to +70 °C (commercial) | -40 to +85 °C (industrial) |
Key Differentiators
- Integrated 128-byte EEPROM data memory on-chip (vs PIC16F630-I/SO)
- Higher temperature range matches automotive and industrial cabins (vs PIC16CE623-04I/SO)
- Drop-in same-package alternatives available within same family (vs PIC16CE623-20/SO)
Design Notes
Estimated: with VDD = 5 V and a typical active current of 2 mA at 4 MHz, the PIC16CE623T-04E/SO draws roughly 10 mW when running. Place a 100 nF ceramic decoupling capacitor within 5 mm of the VDD pin and add a bulk 10 µF electrolytic if the board shares a supply with relays or motors. For battery designs, use SLEEP mode aggressively - the device drops to microamp-level quiescent current, which is critical for remote-control and sensor-node longevity.
The PIC16CE623T-04E/SO uses One-Time-Programmable memory - firmware cannot be changed after programming. Commit firmware revision control and verification before volume programming runs. Also note the part number suffix '-04E' indicates a 4 MHz speed and extended temperature grade; selecting the wrong speed grade (e.g., '/20' for 20 MHz) does not break pinout but mis-applies the timing margins. Confirm MCLR has a proper pull-up and decoupling; floating MCLR is a common source of unexplained resets.
Route the crystal or ceramic resonator traces between OSC1 and OSC2 as short as possible and guard them with a ground ring to suppress EMI injection. Place the decoupling cap directly at VDD with the ground via beside, not shared with other high-current returns. For 18-SOIC, the standard land pattern accepts 0.050 in (1.27 mm) pitch and matches JEDEC SO-18 recommendations; ensure the SOIC body clearance allows for probe-tip access during production test.
Compliance Information
RoHS compliance per Microchip product page and DigiKey listing. Not AEC-Q100 qualified - this part targets industrial/consumer, not automotive safety-critical systems. Confirm halogen-free status with Microchip directly if required by your end-application.
