PIC16CE623-04E/P - 4MHz 8-Bit OTP MCU, 896B, 128B EEPROM | Microchip
MPN: PIC16CE623-04E/P β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $4.5 | $4.50 |
| 10 | $4.05 | $40.50 |
| 100 | $3.6 | $360.00 |
| 500 | $3.2 | $1,600.00 |
| 1,000 | $2.85 | $2,850.00 |
PIC16CE623-04E/P Overview
An 8-bit microcontroller (MCU) is a self-contained single-chip computer that integrates a CPU, program memory (ROM/Flash/OTP), data memory (RAM), non-volatile data memory (EEPROM), and configurable digital I/O peripherals on a single die. In the broader semiconductor taxonomy, the PIC16CE623 belongs to the microcontroller (MCU) family, which itself is a sub-class of microcomputer -> embedded processor -> integrated circuit. The PIC architecture follows a Harvard RISC model with separated program and data buses, enabling simultaneous instruction fetch and operand access.
Key features include 13 bidirectional digital I/O pins, an integrated EEPROM data area for non-volatile parameter storage (calibration, serial numbers, configuration), a hardware timer/counter subsystem, and the standard PIC mid-range peripheral set (interrupt controller, watchdog timer, sleep mode for power savings). The '04' speed suffix specifies 4MHz maximum clock input, and the 'E' industrial/automotive temperature grade extends operation across -40C to +125C, qualifying the part for harsh-environment and automotive under-hood deployments.
Architecturally, the PIC16CE623 implements a 14-bit instruction word for compact code density and uses 35 single-word instructions plus 200 ns single-cycle execution (except branches, which are 2-cycle). Its CMOS process delivers low quiescent current suitable for battery-backed and sleep-mode applications. The integrated 128-byte EEPROM is byte-erasable and rated for >1M erase/write cycles, providing on-chip non-volatile storage that would otherwise require an external serial EEPROM.
Typical applications include automotive body and chassis controllers, appliance control boards, industrial sensor signal conditioning front-ends, low-cost remote-control transmitters, simple closed-loop regulators, and consumer white goods. The 18-pin PDIP package is preferred for hobby, prototyping, educational, and legacy industrial designs because it is socketable, hand-solderable, and breadboard-friendly. The '04E/P' suffix designates 4MHz max clock, automotive temperature grade, and PDIP through-hole package.
When designing with this part, note that OTP memory cannot be re-programmed - firmware must be fully validated before committing. Designers migrating to a flash-based variant (e.g., PIC16F627A) gain re-programmability while retaining pin compatibility. The 18-pin PDIP footprint matches other PIC16C6x/62x/84/84A devices, easing PCB layout reuse. Decoupling: place a 100 nF ceramic capacitor as close as possible to the VDD pin and a 10 uF bulk capacitor near the IC supply trace.
This page synthesizes distributor pricing, drop-in same-package alternatives, an 18-pin PDIP pinout reference, and practical design notes for the PIC16CE623-04E/P - content not consolidated on the manufacturer datasheet alone.
Drop-in alternatives for PIC16CE623-04E/P β 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 PIC16CE623-04E/P (same form factor and footprint) β differing in Core Architecture, EEPROM Data Memory, I/O Pins, Instruction Cycle Time, Package.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
PIC16F628A-I/P
β Drop-Inπ Reference alternative (not in catalog)
PIC16F627A-I/P
β Drop-Inπ Reference alternative (not in catalog)
PIC16F84A-I/P
β Drop-Inπ Reference alternative (not in catalog)
PIC16CE624-04E/P
β Drop-Inπ Reference alternative (not in catalog)
PIC16CE625-04E/P
β Drop-Inβ In Stock
$2.41 / Unit
View Datasheet βPIC16CE623-04E/P Maximum Ratings & Electrical Characteristics
| Core Architecture | 8-bit PIC RISC (Harvard) |
| Instruction Word Width | 14 bits |
| 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 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 bidirectional |
| Number of Instructions | 35 single-word |
| Temperature Grade (E suffix) | -40C to +125C (Automotive/Industrial) |
| Package | 18-pin PDIP (Plastic DIP, through-hole) |
| Terminal Form | Through-Hole |
| Package Dimensions | 0.300 inch row spacing (PDIP-18) |
| Lifecycle Stage | ACTIVE |
| Watchdog Timer | Yes (integrated) |
PIC16CE623-04E/P Pin Configuration
| Pin 1 | RA2 β Port A bit 2 (bidirectional digital I/O) |
| Pin 2 | RA3 β Port A bit 3 (bidirectional digital I/O) |
| Pin 3 | RA4/T0CKI β Port A bit 4 / Timer 0 clock input |
| Pin 4 | MCLR β Master Clear (reset, active low) |
| Pin 5 | VSS β Ground reference |
| Pin 6 | RB0/INT β Port B bit 0 / External interrupt input |
| Pin 7 | RB1 β Port B bit 1 (bidirectional digital I/O) |
| Pin 8 | RB2 β Port B bit 2 (bidirectional digital I/O) |
| Pin 9 | RB3 β Port B bit 3 (bidirectional digital I/O) |
| Pin 10 | RB4 β Port B bit 4 (bidirectional digital I/O, interrupt-on-change) |
| Pin 11 | RB5 β Port B bit 5 (bidirectional digital I/O, interrupt-on-change) |
| Pin 12 | RB6 β Port B bit 6 (bidirectional digital I/O, interrupt-on-change) |
| Pin 13 | RB7 β Port B bit 7 (bidirectional digital I/O, interrupt-on-change) |
| Pin 14 | VDD β Positive supply voltage (3.0V to 5.5V) |
| Pin 15 | OSC2/CLKOUT β Oscillator output / Clock output |
| Pin 16 | OSC1/CLKIN β Oscillator input / External clock input |
| Pin 17 | RA0 β Port A bit 0 (bidirectional digital I/O) |
| Pin 18 | RA1 β Port A bit 1 (bidirectional digital I/O) |
Typical Applications
PIC16CE623-04E/P is suitable for 6 applications: Automotive Body Control Modules, Appliance Control Boards, Industrial Sensor Signal Conditioning, Remote Control and RF Transmitter Encoders, Battery-Backed Sleep-Mode Devices, Educational and Hobbyist Microcontroller Projects.
Automotive Body Control Modules
The PIC16CE623-04E/P suits automotive body and chassis control modules where deterministic real-time response and code security are paramount. Its OTP memory cannot be read back, protecting proprietary body-control algorithms (lighting sequencing, wiper logic, accessory multiplexing) from reverse engineering - an advantage flash MCUs cannot match. The 'E' temperature grade supports -40C to +125C operation under the hood and in cabin thermal extremes. With 13 I/O pins and 4 MHz instruction cycle, it handles multiple switch-input scanning and relay-driver PWM outputs at automotive-grade timing margins.
Recommended
Appliance Control Boards
White goods and small appliances (washing machines, dishwashers, microwave ovens, rice cookers) benefit from the PIC16CE623-04E/P's OTP security, low cost, and 128-byte on-chip EEPROM for user-preference storage. The 896-byte OTP accommodates full state-machine firmware for cycle selection, sensor reading, and actuator control without external memory. The 18-pin PDIP is socketable for factory programming and field serviceability - a major advantage over SMD alternatives in cost-sensitive consumer appliances.
Recommended
Industrial Sensor Signal Conditioning
For industrial 4-20 mA loop-powered sensor transmitters and isolated signal-conditioning front-ends, the PIC16CE623-04E/P provides EEPROM-stored calibration coefficients that survive power cycles and field-recalibration events. The PIC 14-bit instruction word and 35-instruction RISC core enable precise digital filtering (moving average, exponential smoothing) within the 4 MHz instruction budget. Its 3-5.5V supply range is well-matched to industrial 5V regulated rails, and the 18-pin PDIP withstands conformal coating and through-hole assembly for harsh industrial environments.
Recommended
Remote Control and RF Transmitter Encoders
Low-cost RF remote-control transmitters for garage doors, gate openers, and key-fob entry systems use the PIC16CE623-04E/P to encode fixed transmission IDs and rolling-code algorithms. OTP prevents cloning attacks because the programmed firmware cannot be extracted by an attacker. The 128-byte EEPROM stores unique device serial numbers and rolling-code counters. With 4 MHz operation, the device generates precise 38 kHz carrier modulation for IR protocols and OOK/ASK RF transmissions at sub-millisecond timing accuracy.
Recommended
Battery-Backed Sleep-Mode Devices
The PIC16CE623-04E/P's CMOS process and integrated sleep mode deliver nanoampere-level standby current, making it ideal for battery-backed devices like smoke detectors, security sensors, and IoT edge nodes that spend 99% of their lifetime asleep. The 128-byte EEPROM preserves user configuration and event counters across battery-replacement cycles. Wake-up via watchdog timer or external interrupt allows periodic sensor polling at multi-second intervals while preserving coin-cell battery life for years.
Recommended
Educational and Hobbyist Microcontroller Projects
The PIC16CE623-04E/P's 18-pin PDIP form factor is breadboard-friendly and socketable, making it a popular choice for university embedded-systems courses, maker projects, and electronics hobbyists learning microcontroller programming. The simple 35-instruction PIC mid-range instruction set is ideal for teaching RISC fundamentals, and OTP prevents accidental firmware loss. With 13 I/O pins, students can interface LEDs, pushbuttons, 7-segment displays, and basic sensors without complex pin-multiplexing schemes.
Recommended
Recommended Products Summary
Engineering reference data for PIC16CE623-04E/P β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16F628A-I/P | PIC16F627A-I/P | PIC16F84A-I/P | PIC16CE624-04E/P | PIC16CE625-04E/P |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | PDIP-18 | PDIP-18 (same) | PDIP-18 (same) | PDIP-18 (same) | PDIP-18 (same) | PDIP-18 (same) |
| Program Memory | 896 B OTP | 2048 B Flash (+129%) | 1024 B Flash (+14%) | 1024 B Flash (+14%) | 2048 B OTP (+129%) | 4096 B OTP (+358%) |
| Program Memory Type | OTP | Flash (re-programmable) | Flash (re-programmable) | Flash (re-programmable) | OTP (same) | OTP (same) |
| Max Clock Frequency | 4 MHz | 20 MHz (+400%) | 20 MHz (+400%) | 20 MHz (+400%) | 4 MHz (same) | 4 MHz (same) |
| Data RAM | 96 B | 224 B (+133%) | 128 B (+33%) | 68 B (-29%) | 96 B (same) | 96 B (same) |
| EEPROM | 128 B | 128 B (same) | 128 B (same) | 64 B (-50%) | 128 B (same) | 128 B (same) |
| I/O Pins | 13 | 16 (+23%) | 16 (+23%) | 13 (same) | 13 (same) | 13 (same) |
| Temperature Grade | -40C to +125C (Automotive E) | -40C to +85C (Industrial I) | -40C to +85C (Industrial I) | -40C to +85C (Industrial I) | -40C to +125C (Automotive E, same) | -40C to +125C (Automotive E, same) |
Key Differentiators
- OTP memory provides firmware security that flash cannot match (vs PIC16F628A-I/P)
- Same-package compatibility with full PIC16CE62x family for memory upgrade path (vs PIC16CE624-04E/P)
- Extended -40C to +125C automotive temperature range (vs PIC16F628A-I/P)
Design Notes
Place a 100 nF ceramic decoupling capacitor as close as possible to the VDD pin (pin 14) and a 10 uF bulk tantalum or aluminum capacitor on the same supply trace. For battery-powered designs, add a 100 kohm pull-up on MCLR (pin 4) to prevent spurious resets during VDD ramp-up; the MCLR pin is internally Schmitt-triggered but benefits from the external pull-up for noisy environments.
Keep the oscillator traces (OSC1 pin 16, OSC2 pin 15) short and routed over a continuous ground plane to minimize EMI radiation and clock jitter. For crystal operation, place the two load capacitors (typically 15-33 pF for 4 MHz) within 5 mm of the oscillator pins and use symmetrical trace lengths. Avoid routing high-speed switching signals adjacent to the oscillator traces.
OTP memory cannot be re-programmed - thoroughly validate firmware on a flash equivalent (PIC16F628A-I/P in same PDIP-18 package) before committing code to PIC16CE623-04E/P production parts. The 'E' temperature grade spans -40C to +125C; if your application requires only commercial 0-70C range, the lower-cost 'I' industrial variants are sufficient. Configuration bits must be set before programming; an unprogrammed configuration word may enable features like code protection unexpectedly.
Compliance Information
RoHS/REACH/lead-free status not explicitly stated in the verified web data; marked unknown pending Microchip compliance documentation review. The 'E' temperature grade is automotive-grade but specific AEC-Q100 qualification documents should be requested from Microchip for safety-critical automotive ECUs. Conflict minerals compliance per Microchip policy.
