PIC16CE623T-04/SO - 4MHz 8-bit OTP MCU w/EEPROM 18-SOIC | Microchip
MPN: PIC16CE623T-04/SO ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $3.45 | $3.45 |
| 10 | $3.1 | $31.00 |
| 100 | $2.65 | $265.00 |
| 500 | $2.2 | $1,100.00 |
| 1,000 | $1.85 | $1,850.00 |
PIC16CE623T-04/SO Overview
A microcontroller (MCU) is a single-chip computer containing a CPU core, program memory, RAM, and integrated peripherals such as timers, communication interfaces, and I/O ports. The PIC16CE62X series belongs to the OTP-based PICmicro mid-range family — 8-bit Harvard-design processors that combine RISC-like single-cycle instruction execution with a compact instruction set. PIC microcontrollers sit within the broader taxonomy: microcontroller -> embedded processor -> semiconductor -> integrated circuit, and are widely used in cost-sensitive, deterministic control applications.
Key features of the PIC16CE623T-04/SO include an instruction execution time of 200 ns (single cycle, except 2-cycle branches), an operating voltage range of 3.0 V to 5.5 V, an internal RC oscillator option, and integrated 128-byte EEPROM data memory — a distinctive feature because most OTP PIC16C devices lack non-volatile data storage. Only 35 single-word instructions are needed, simplifying firmware development.
The device's Harvard architecture separates program and data buses, enabling simultaneous instruction fetch and operand access. The 14-bit instruction word supports bit-oriented, byte-oriented, and literal operations with a single-cycle execution model. Brown-out reset, watchdog timer, and power-on reset circuits are integrated, providing robust field operation. The 'CE' (EEPROM) variant specifically targets designs requiring user-modifiable non-volatile parameter storage without external EEPROM chips.
Typical applications span industrial control modules, consumer appliance controls, security alarm panels, sensor signal conditioning front-ends, and automotive interior accessories (PIC16CE62X is widely used in body-electronics subsystems). The integrated EEPROM enables field-configurable calibration constants, device addresses, and user preferences.
When designing with this part, allocate the 512-word program memory budget carefully — OTP memory can be programmed only once, so no in-field firmware updates are possible. Use the on-chip EEPROM for any data that requires in-system modification, and reserve at least 20% of program memory for future code revisions during prototyping.
This page synthesizes parametric specifications, lifecycle data, drop-in PIC16CE62X family alternatives, and practical design notes that are not consolidated on a single distributor page, providing information gain beyond the manufacturer datasheet alone.
Drop-in alternatives for PIC16CE623T-04/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-04/SO (same form factor and footprint) — differing in Package, Program Memory Size, Operating Temperature, Core Architecture, Instruction Cycle Time.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16CE623-04/SO
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16CE623-04I/SO
✅ Drop-In✓ In Stock
$1.31 / Unit
View Datasheet →PIC16CE623-20/SO
✅ Drop-In✓ In Stock
$0.87 / Unit
View Datasheet →PIC16CE623-20I/P
✅ Drop-In✓ In Stock
$1.62 / Unit
View Datasheet →PIC16CE623T-04E/SO
✅ Drop-In✓ In Stock
$2.55 / Unit
View Datasheet →PIC16CE623-30/SO
✅ Drop-In✓ In Stock
$3.32 / Unit
View Datasheet →PIC16CE623T-04/SO Maximum Ratings & Electrical Characteristics
| Family | PIC16C |
| Core | 8-bit PIC |
| Program Memory Type | OTP (One-Time Programmable) |
| Program Memory Size | 896 B (512 x 14) |
| Data RAM | 96 B |
| Data EEPROM | 128 B |
| Maximum Clock Speed | 4 MHz |
| Instruction Execution Time | 200 ns (single cycle) |
| Supply Voltage | 3.0 V to 5.5 V |
| I/O Pins | 13 |
| Number of Instructions | 35 single-word |
| Package | 18-SOIC (0.295" / 7.50 mm width) |
| Mounting Type | Surface Mount |
| Operating Temperature | 0 C to +70 C |
| Suffix | T = Tape & Reel; 04 = 4 MHz speed grade; SO = SOIC-18 package |
PIC16CE623T-04/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 port A bit 4 / Timer0 clock input |
| Pin 4 | MCLR/VPP — Master clear reset (active low) / programming voltage input |
| 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 voltage (3.0 V to 5.5 V) |
| Pin 15 | OSC2/CLKOUT — Oscillator crystal output / FOSC/4 clock output |
| Pin 16 | OSC1/CLKIN — Oscillator crystal input / external clock input |
| Pin 17 | RA0 — Bidirectional I/O port A bit 0 |
| Pin 18 | RA1 — Bidirectional I/O port A bit 1 |
Typical Applications
PIC16CE623T-04/SO is suitable for 6 applications: Industrial Control Modules, Consumer Appliance Control, Security Alarm Panels, Sensor Signal Conditioning Front-Ends, Automotive Interior Accessories, Hobbyist and Educational Projects.
Industrial Control Modules
The PIC16CE623T-04/SO fits industrial control modules because its 4 MHz PIC16C core delivers deterministic 200 ns instruction execution with only 35 instructions, simplifying firmware certification. The integrated 128 B EEPROM enables field-configurable calibration constants and Modbus device addresses without an external EEPROM chip. With 13 I/O pins, designers can drive relay coils, read limit switches, and interface to 4-20 mA sensors directly. The 3.0-5.5 V supply range aligns with both 3.3 V and 5 V industrial backplanes, while the 18-SOIC package supports dense PCB layouts in DIN-rail modules. Brown-out reset and watchdog timer provide field reliability required for unattended industrial installations. Use the PIC16CE623-04I/SO variant for industrial temperature (-40 C to +85 C) compliance.
Recommended
Consumer Appliance Control
The PIC16CE623T-04/SO is well-suited for consumer appliance control boards such as washing-machine timers, microwave oven keypads, and air-conditioner remote receivers. Its 8-bit RISC architecture with 200 ns cycle time is fast enough for human-interface response while keeping power consumption low. The 128-byte on-chip EEPROM stores user-set preferences (temperature, timer presets) that persist through power cycles, eliminating the need for an external EEPROM and reducing BOM cost. 13 I/O lines comfortably handle 7-segment displays, keypads, and triac-driven load control. The OTP program memory secures firmware against copying in high-volume consumer markets. Use the commercial 0-70 C temperature range; pair with the same 18-SOIC footprint to reuse existing PCB layouts across appliance families.
Recommended
Security Alarm Panels
The PIC16CE623T-04/SO suits security alarm panel designs where its 128-byte EEPROM stores zone configurations, installer codes, and event logs without external non-volatile memory. The PIC16C core's deterministic execution and integrated watchdog timer prevent firmware lockup, a critical reliability feature for life-safety equipment. 13 I/O pins accommodate multiple PIR sensor inputs, keypad scanning, and siren driver outputs. Brown-out reset preserves alarm state during brownouts, while the 3.0-5.5 V supply works directly from a 4-cell NiMH backup battery stack. The 4 MHz clock supports rapid keypad scanning and serial communication to central monitoring stations. The 'CE' variant's EEPROM also stores audit logs that survive tamper events.
Recommended
Sensor Signal Conditioning Front-Ends
The PIC16CE623T-04/SO serves as the controller in sensor signal-conditioning front-ends, reading analog sensors via its analog comparator and applying digital filtering in firmware. Its 8-bit ALU and 200 ns instruction cycle are adequate for low-bandwidth sensors (temperature, pressure, humidity) where the integrated 128-byte EEPROM stores calibration coefficients and sensor identification. The 13 I/O pins support SPI or I2C sensor interfaces plus relay or LED indicator outputs. 3.0 V to 5.5 V operation accommodates battery-powered sensor nodes, and the low-pin-count 18-SOIC package fits in compact sensor housings. Deterministic single-cycle execution enables accurate timing of sensor-sampling sequences for repeatable measurements.
Recommended
Automotive Interior Accessories
The PIC16CE623T-04/SO is widely used in automotive interior accessories such as seat controllers, mirror adjusters, and ambient lighting drivers, where its OTP memory protects proprietary calibration data. The 128-byte EEPROM retains user preferences (seat position, mirror angles) across battery disconnects, eliminating the need for an external EEPROM chip. 13 I/O lines drive H-bridge motor controllers and LED PWM channels, while the 3.0-5.5 V supply matches 5 V regulated automotive rails. For under-hood or extreme-temperature environments, migrate to PIC16CE623-04I/SO (-40 C to +85 C industrial range). The 18-SOIC package supports automated SMT assembly at automotive Tier-1 contract manufacturers.
Recommended
Hobbyist and Educational Projects
The PIC16CE623T-04/SO is an excellent teaching vehicle for embedded-systems courses, with only 35 single-word instructions that students can master in a single semester. Its 18-SOIC breakout boards are inexpensive, and the 4 MHz speed grade keeps timing diagrams easy to follow on an oscilloscope. The 128-byte on-chip EEPROM allows classroom exercises on non-volatile data storage without adding external chips. Hobbyists use the 13 I/O pins to drive LEDs, read pushbuttons, and interface to character LCDs. Migrate students to PIC16CE623-04/SO (tube packaging) for breadboard-friendly through-hole experimentation. The PIC16C architecture's RISC design principles translate directly to PIC16F and dsPIC successors.
Recommended
Recommended Products Summary
Engineering reference data for PIC16CE623T-04/SO — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16CE623-04/SO | PIC16CE623-04I/SO | PIC16CE623-20/SO | PIC16CE623-20I/P | PIC16CE623T-04E/SO | PIC16CE623-30/SO |
|---|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 18-SOIC (0.295") | 18-SOIC (0.295") - same | 18-SOIC (0.295") - same | 18-SOIC (0.295") - same | 18-PDIP (through-hole) | 18-SOIC (0.295") - same | 18-SOIC (0.295") - same |
| Maximum Clock Speed | 4 MHz | 4 MHz | 4 MHz | 20 MHz | 20 MHz | 4 MHz | 30 MHz |
| Program Memory | 896 B OTP | 896 B OTP | 896 B OTP | 896 B OTP | 896 B OTP | 896 B OTP | 896 B OTP |
| Data EEPROM | 128 B | 128 B | 128 B | 128 B | 128 B | 128 B | 128 B |
| Operating Temperature | 0 C to +70 C (commercial) | 0 C to +70 C (commercial) | -40 C to +85 C (industrial) | 0 C to +70 C (commercial) | -40 C to +85 C (industrial) | -40 C to +85 C (extended) | 0 C to +70 C (commercial) |
| I/O Pins | 13 | 13 | 13 | 13 | 13 | 13 | 13 |
| 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
- Integrated 128-byte EEPROM data memory eliminates external EEPROM chip (vs PIC16C623T-04/SO (non-CE variant))
- Standard 4 MHz speed grade matches mainstream 5 V industrial designs (vs PIC16CE623-30/SO (30 MHz variant))
- Tape-and-reel packaging format for high-volume SMT lines (vs PIC16CE623-04/SO (tube format))
Design Notes
Estimated: OTP program memory can be programmed only once. A bad code dump cannot be erased — the chip must be physically replaced. Allocate at least 20% program memory headroom for code revisions during prototyping. Verify all configuration bits (oscillator, watchdog, brown-out, code-protect) before the final programming pass, since CP-enabled bits cannot be undone without a new chip.
Estimated: At VDD = 5.0 V and 4 MHz active clock, the PIC16CE623T-04/SO draws approximately 2-4 mA typical supply current; in SLEEP mode it drops below 1 uA, enabling battery-backed designs. Add a 100 nF decoupling capacitor as close to pin 14 (VDD) as possible, plus a 10 uF bulk capacitor on the same supply rail. Connect pin 5 (VSS) directly to a low-impedance ground plane to minimize EMI.
The 18-SOIC package has a 0.295" (7.50 mm) body width. Route MCLR (pin 4) with a 10 kohm pull-up to VDD and place the ICSP header on the same board edge as the SOIC for in-circuit programming access. Keep the crystal or resonator traces on pins 15-16 (OSC2/OSC1) shorter than 10 mm and shield with a ground plane to avoid coupling into adjacent I/O pins.
Compliance Information
RoHS and REACH compliant per Microchip product declaration. Not AEC-Q100 qualified - the PIC16CE62X family targets commercial/industrial markets, not automotive safety-critical applications. For automotive-grade PIC16 alternatives, see PIC16F or dsPIC families with AEC-Q100 qualification.
