PIC16CE624/JW - 8-Bit 20MHz OTP MCU, 1.75KB EPROM | Microchip
MPN: PIC16CE624/JW ⚠ Last Time Buy| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $14.5 | $14.50 |
| 10 | $13.05 | $130.50 |
| 100 | $11.6 | $1,160.00 |
| 500 | $10.45 | $5,225.00 |
| 1,000 | $9.85 | $9,850.00 |
PIC16CE624/JW Overview
An 8-bit microcontroller (MCU) is a small computer-on-a-chip containing a processor core, program memory, RAM, and peripherals designed to embed intelligence in electronic products. Within the broader taxonomy, an MCU sits under microprocessor -> microcontroller -> 8-bit microcontroller -> CMOS RISC microcontroller. The PIC16CE62X line belongs to Microchip's mid-range PIC architecture, which is upwards compatible with the PIC16C5X baseline family and the PIC12CXXX 8-pin devices, allowing engineers to port code across pin counts with minimal rewriting.
Key features include a maximum clock frequency of 20 MHz delivering 133 ns instruction execution, only 35 single-word instructions to learn, 128 bytes of data EEPROM, two comparators with a programmable voltage reference, a Brown-Out Detect (BOD), Power-On Reset (POR), Watchdog Timer (WDT), and an operating voltage range of 3.0V to 5.5V. The /JW suffix designates the 18-pin CERDIP (CERamic Dual In-line Package) form factor with an integrated quartz erasure window that allows the OTP program memory to be bulk-erased under UV light and reused during development or low-volume prototyping.
The architecture is built on a Harvard-class RISC core with separate program and data buses, a 14-bit wide instruction word, and a hardware stack of 8 levels. Combined with the 2 comparators and programmable voltage reference, this allows the chip to perform analog signal conditioning tasks that would otherwise require external op-amps - useful in sensor-interface and battery-monitoring designs.
Typical applications for PIC16CE624/JW include industrial sensor signal conditioning, analog front-ends for measurement equipment, automotive body and chassis subsystems, HVAC control boards, appliance controllers, and battery chargers. Its 128-byte EEPROM and on-board comparators make it well suited for designs that must store calibration constants or trim values across power cycles.
Designers should note that /JW CERDIP packages are larger, more expensive, and reserved for development and UV-eraseable prototyping; production runs typically migrate to the OTP-only plastic PDIP (/P), SOIC (/SO), or SSOP (/SS) variants. The CERDIP-18 footprint is a through-hole WDIP-18 land pattern that requires a socket for UV erasing. Pricing on the /JW windowed package typically exceeds the equivalent OTP-only package by 5x-10x.
This page synthesizes distributor pricing, drop-in CERDIP-18 alternatives, package migration guidance, and practical design notes not found in the manufacturer datasheet.
Drop-in alternatives for PIC16CE624/JW — 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 PIC16CE624/JW (same form factor and footprint) — differing in Operating Temperature, Package, Program Memory Type, I/O Pins, Program Memory Size.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16CE623-04I/P
✅ Drop-In✓ In Stock
$2.18 / Unit
View Datasheet →PIC16C72/JW
✅ Drop-In ⚠️ 参数待验证✓ In Stock
$17.8 / Unit
View Datasheet →PIC16C717/JW
✅ Drop-In ⚠️ 参数待验证✓ In Stock
$11.8 / Unit
View Datasheet →PIC16CE624-04I/JW
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16C774/JW
✅ Drop-In ⚠️ 参数待验证✓ In Stock
$10.2 / Unit
View Datasheet →PIC16CE624/JW Maximum Ratings & Electrical Characteristics
| Core Architecture | PIC16 Mid-Range 8-bit RISC |
| Instruction Set Width | 14-bit |
| Number of Instructions | 35 single-word instructions |
| Instruction Execution Time | 133 ns at 20 MHz (200 ns at 4 MHz) |
| Maximum Clock Frequency | 20 MHz |
| Program Memory Type | OTP EPROM (One-Time-Programmable), UV-erasable in JW |
| Program Memory Size | 1.75 KB (1K x 14) |
| Data EEPROM | 128 bytes |
| Data RAM | 96 bytes |
| Supply Voltage Range | 3.0 V to 5.5 V |
| I/O Pins | 13 (bidirectional) |
| Comparators | 2 on-chip analog comparators |
| Programmable Voltage Reference | Yes (shared with comparators) |
| Timers | 1 x 8-bit Timer0, 1 x Watchdog Timer (WDT) |
| Reset Sources | POR, Brown-Out Detect (BOD), WDT |
| Package | 18-pin CERDIP (WDIP-18) with quartz window |
| Mounting Type | Through-Hole |
| Operating Temperature | 0C to +70C (Commercial) |
| RoHS Status | Non-compliant (contains lead-bearing ceramic package) |
| MSL Level | 1 (not moisture-sensitive for through-hole CERDIP) |
PIC16CE624/JW Pin Configuration
| Pin 1 | RA2 — Bidirectional I/O port A bit 2; analog comparator output |
| Pin 2 | RA3 — Bidirectional I/O port A bit 3 |
| Pin 3 | RA4 — Bidirectional I/O port A bit 4 (open-drain) |
| 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 input |
| 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 / clock output (Fosc/4) |
| Pin 16 | OSC1/CLKIN — Oscillator crystal input / external clock input |
| Pin 17 | RA0 — Bidirectional I/O port A bit 0; analog comparator non-inverting input |
| Pin 18 | RA1 — Bidirectional I/O port A bit 1; analog comparator inverting input |
Typical Applications
PIC16CE624/JW is suitable for 6 applications: Industrial Sensor Signal Conditioning, Battery-Powered Measurement Equipment, Appliance Control Boards, Automotive Body and Chassis Subsystems, HVAC Fan and Damper Controllers, Battery Charger Control Loops.
Industrial Sensor Signal Conditioning
The PIC16CE624/JW is a strong fit for industrial sensor signal conditioning because it integrates 2 on-chip analog comparators and a 32-step programmable voltage reference on the same die as the 8-bit CPU. A bridge-style pressure or strain-gauge sensor can be biased directly from the internal Vref and read via the comparators without external op-amps, while the 20 MHz CPU delivers 133 ns instruction execution for fast threshold detection. The 128-byte data EEPROM stores per-unit calibration constants across power cycles, and the Brown-Out Detect holds the device in reset during supply dips typical of factory floors. Designers migrate the production version to PIC16CE624-04I/P for industrial temp range and lower cost.
Recommended
Battery-Powered Measurement Equipment
For battery-powered handheld measurement equipment, the PIC16CE624/JW runs from 3.0 V to 5.5 V, allowing direct connection to two alkaline cells or a 3.3 V LDO. The mid-range PIC core's 35-instruction set keeps firmware size small enough to fit in the 1.75 KB EPROM even with floating-point math libraries, and the 128-byte EEPROM records min/max log values that survive battery replacement. Its Watchdog Timer with up to 2.3 s prescaler provides robust recovery from power brown-outs in portable tools. The CERDIP /JW package is typically reserved for the engineering build; the production plastic PDIP (/P) or SOIC (/SO) variant drops in on the same 18-pin footprint for the released product.
Recommended
Appliance Control Boards
White-goods and small-appliance control boards benefit from the PIC16CE624/JW's 13 high-current I/O pins (each capable of 25 mA source/sink) that can directly drive relays, triacs, solenoids, and LED indicators without external buffers. The integrated comparators and programmable voltage reference detect zero-crossing of the AC line for triac timing, while the 20 MHz CPU executes 35 single-word instructions every 133 ns for precise debounce and timing control. The 128-byte EEPROM stores user-selectable wash cycles, toaster darkness levels, or HVAC setpoints that survive power loss. Production designs typically migrate to the cheaper plastic PDIP (/P) or SOIC (/SO) variant after firmware is locked.
Recommended
Automotive Body and Chassis Subsystems
Although the standard PIC16CE624/JW is commercial 0C to +70C, the same silicon in PIC16CE624-04I/JW or PIC16CE624-04I/P serves automotive body and chassis subsystems such as seat controllers, mirror positioners, and lighting timers. The on-chip Brown-Out Detect handles load-dump transients on the 12 V vehicle bus (after pre-regulation), and the Watchdog Timer recovers the MCU from EMI-induced code faults. The 128-byte EEPROM stores trim and configuration data such as seat memory positions and intermittent wiper intervals across battery disconnects. Note that AEC-Q100 qualification requires the automotive-grade PIC16F627AT or PIC16F628AT successor parts, not the /JW windowed CERDIP.
Recommended
HVAC Fan and Damper Controllers
The PIC16CE624/JW is well matched to HVAC fan and damper controllers that require simple 8-bit control of brushed DC motors or 24 VAC damper actuators. The 2 analog comparators read thermistor divider networks directly, while the programmable voltage reference provides a stable excitation for the ratiometric measurement - removing the need for an external reference IC. The 20 MHz CPU executes a PID loop in 133 ns per instruction, leaving ample headroom for serial communication with a master thermostat. The 128-byte EEPROM retains the last user-selected fan speed and setpoint across power cycles. The plastic PDIP (/P) variant is normally used for HVAC production because windowed CERDIP is over-spec for indoor equipment.
Recommended
Battery Charger Control Loops
Small sealed lead-acid (SLA) and NiMH battery chargers benefit from the PIC16CE624/JW's two analog comparators and programmable voltage reference, which together implement CC/CV (constant-current / constant-voltage) charge termination without external op-amps. The internal Vref sets the comparator thresholds for Vbat and dV/dt detection, while the 20 MHz CPU executes the charge-state machine and LED status indicators. The 128-byte EEPROM stores charge-cycle counters and battery-capacity estimates for charger diagnostics. The Watchdog Timer ensures the charger enters a safe state if firmware hangs during a charge cycle. Production volumes typically migrate to the plastic PDIP (/P) or SOIC (/SO) variant for cost reduction.
Recommended
Recommended Products Summary
Engineering reference data for PIC16CE624/JW — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16CE623-04I/P | PIC16C72/JW | PIC16C717/JW | PIC16CE624-04I/JW | PIC16C774/JW |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 18-pin CERDIP with UV window (/JW) | 18-pin PDIP - different package | 18-pin CERDIP with UV window - same | 18-pin CERDIP with UV window - same | 18-pin CERDIP with UV window - same | 18-pin CERDIP with UV window - same |
| Program Memory | 1.75 KB (1K x 14) OTP EPROM | 0.875 KB (-50%) | 2 KB (+14%) | 2 KB (+14%) | 1.75 KB (same) | 4 KB (+129%) |
| Data EEPROM | 128 bytes | 128 bytes (same) | 0 bytes (none) | 0 bytes (none) | 128 bytes (same) | 0 bytes (none) |
| Maximum Clock Frequency | 20 MHz | 4 MHz (-80%) | 20 MHz (same) | 20 MHz (same) | 4 MHz (-80%) | 20 MHz (same) |
| Analog Comparators | 2 | 2 (same) | 2 (same) | 2 (same) | 2 (same) | 2 (same) |
| ADC Channels | None | None | None | 6 x 8-bit | None | 12-bit ADC |
| 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) |
Key Differentiators
- On-chip data EEPROM (vs PIC16C72/JW)
- 20 MHz speed grade available (vs PIC16CE623-04I/P)
- Largest OTP EPROM in 18-pin PIC16CE6X family (vs PIC16C717/JW)
Design Notes
Do not confuse the /JW (windowed CERDIP) variant with the /P (plastic PDIP) variant in your BOM. The /JW package costs 5x-10x more and is intended only for development where UV EPROM erasure is required; production runs must migrate to PIC16CE624/P or PIC16CE624/SO to control cost. Additionally, the /JW ceramic package is NOT RoHS compliant, so any design targeting the EU market must use the plastic-package production variant. Verify your programmer supports the windowed device before committing to the /JW footprint.
Place the 18-pin CERDIP socket so the quartz window faces upward with at least 5 mm of clearance for UV eraser insertion. Decouple VDD (pin 14) with a 0.1 uF ceramic capacitor placed within 5 mm of the pin, and add a bulk 10 uF electrolytic on the same supply rail. Keep the OSC1/OSC2 traces short (under 10 mm) and route them away from the RB port traces to minimize clock-coupling noise on digital inputs. The MCLR pin (4) requires a 10 kohm pull-up to VDD with a 100 nF capacitor to ground for noise-immune reset operation.
The PIC16CE624 draws a typical operating current of 2 mA at 5 V and 4 MHz, dropping below 1 uA in SLEEP mode. For battery-powered designs, use the SLEEP instruction combined with the Watchdog Timer wakeup to achieve sub-10 uA average current. Estimated: assuming 1% active duty cycle, average current is approximately 2 mA * 0.01 + 1 uA * 0.99 = 21 uA - extend battery life by 100x compared to continuous operation. Ensure the BOD is enabled in configuration bits to prevent corrupted EEPROM writes during supply brown-outs.
Compliance Information
CERDIP-18 with quartz window uses lead-bearing ceramic sealing materials that exceed RoHS thresholds. Plastic PDIP (/P), SOIC (/SO), and SSOP (/SS) variants of the same silicon die ARE RoHS compliant - migrate to plastic package for RoHS-compliant production. AEC-Q100 qualification is NOT available on this part family - use PIC16F627AT or PIC16F628AT for automotive.
