PIC16CE624-20E/P - 8-Bit 20MHz OTP MCU w/EEPROM | Microchip
MPN: PIC16CE624-20E/P ✓ Hoạt độngPIC16CE624-20E/P Tóm tắt
An OTP microcontroller (One-Time-Programmable MCU) is a member of the microcontroller (MCU) family that sits within the broader category of embedded microcontrollers and embedded systems. It belongs to Microchip's PIC16C mid-range architecture, a RISC (Reduced Instruction Set Computer) architecture using a Harvard memory model. Unlike flash-based MCUs, OTP parts are programmed once by the user or factory and cannot be re-programmed in-circuit, making them suited for high-volume cost-sensitive products where firmware is finalized before production. The "E" in the part number designates the extended (-40C to +125C) automotive operating temperature grade, which is an important selection criterion versus the standard "I" (-40C to +85C) variant.
Key features include 13 digital I/O pins, 64 bytes of SRAM, two on-chip analog comparators, a programmable voltage reference, a watchdog timer with its own on-chip RC oscillator, brown-out reset, power-on reset, and an 8-bit timer/counter (TMR0). The 35 single-word instruction RISC core executes most instructions in a single 200 ns cycle, and the device runs from a single 3.0 V to 5.5 V supply. The instruction set is upwards-compatible with the PIC16C5X baseline and PIC12CXXX baseline devices, easing code migration for designers familiar with older PIC families.
Technically, the PIC16CE624 separates code and data buses (Harvard architecture), has a 14-bit-wide instruction word, and integrates analog peripherals directly on-chip, reducing external component count. Its 2 comparators can be tied to the programmable voltage reference to build simple ADC front-ends or battery monitors without an external analog IC.
Typical applications include automotive body controllers, appliance control boards, simple sensor signal conditioning with on-chip comparators, low-cost consumer remote controls, and replacement of discrete logic in white goods. The extended temperature grade specifically targets under-hood and automotive cabin modules.
When designing with this device, remember that OTP memory requires a one-time programmer and cannot be re-flashed - plan firmware development on a flash-based sibling (such as PIC16F684) before committing to the PIC16CE624 for production. Place a 0.1 uF decoupling capacitor as close as possible between VDD and VSS, and respect the 5.5 V absolute maximum on the supply rail to avoid EEPROM data corruption.
Bộ thay thế dễ dàng lắp đặt cho PIC16CE624-20E/P — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với PIC16CE624-20E/P (cùng hình factor và footprint) — khác nhau ở Package, Timers, Mounting Type, Instruction Cycle, Operating Temperature.
PIC16CE624-20I/P
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC16CE623-20I/P
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Xem tài liệu →PIC16CE624-04/P
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Xem tài liệu →PIC16CE624-20/P
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16F84A-20I/P
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Xem tài liệu →PIC16CE624-20E/P Tỷ lệ tối đa & tính chất điện
| Core Architecture | PIC16C / PIC16 mid-range 8-bit RISC |
| Instruction Set Width | 14-bit |
| Program Memory Type | OTP (One-Time-Programmable) |
| Program Memory Size | 1.75 KB (1K x 14) |
| EEPROM Data Memory | 128 bytes |
| SRAM Data Memory | 64 bytes |
| Tần số xung maksimum | 20 MHz |
| Instruction Cycle Time | 200 ns (single-cycle) |
| Supply Voltage (VDD) | 3.0 V to 5.5 V |
| I/O Pins | 13 |
| On-chip Comparators | 2 |
| Programmable Voltage Reference | Yes |
| Timers | TMR0 (8-bit) |
| Watchdog Timer | Yes (with dedicated on-chip RC oscillator) |
| Brown-out Reset | Yes |
| Power-on Reset | Yes |
| Operating Temperature Grade | Extended (E): -40C to +125C (automotive) |
| Hộp | 18-pin PDIP (300 mil, through-hole) |
| Kiểu lắp đặt | Through-Hole (DIP) |
| Trạng thái RoHS | Compliant |
Cấu hình chân PIC16CE624-20E/P
| Chân 1 | MCLR/Vpp — Master Clear (active low reset) / programming voltage input |
| Chân 2 | RA0/AN0 — Port A bit 0 / analog comparator input 0 |
| Chân 3 | RA1/AN1 — Port A bit 1 / analog comparator input 1 |
| Chân 4 | RA2/AN2 — Port A bit 2 / analog comparator input 2 |
| Chân 5 | RA3/AN3 — Port A bit 3 / analog comparator input 3 |
| Chân 6 | RA4/T0CKI — Port A bit 4 / TMR0 clock input (open-drain) |
| Chân 7 | RA5/SS — Port A bit 5 / slave select input |
| Chân 8 | OSC1/CLKIN — Crystal oscillator input / external clock input |
| Chân 9 | OSC2/CLKOUT — Crystal oscillator output / clock output |
| Chân 10 | VSS — Ground reference |
| Chân 11 | VDD — Positive supply voltage (3.0 V to 5.5 V) |
| Chân 12 | RB0/INT — Port B bit 0 / external interrupt input |
| Chân 13 | RB1 — Port B bit 1 |
| Chân 14 | RB2 — Port B bit 2 |
| Chân 15 | RB3 — Port B bit 3 |
| Chân 16 | RB4 — Port B bit 4 |
| Chân 17 | RB5 — Port B bit 5 |
| Chân 18 | RB6 — Port B bit 6 |
Ứng dụng tiêu biểu
PIC16CE624-20E/P phù hợp cho 7 Áp dụngs: Automotive Body Control Modules, White Goods and Appliance Control, Battery-Operated Sensor Signal Conditioning, Low-Cost Consumer Remote Controls, Discrete Logic Replacement in Industrial Controls, Simple ADC Front-End Using On-Chip Comparators, Educational and Hobby Embedded Projects.
Automotive Body Control Modules
The PIC16CE624-20E/P is well suited to automotive body controllers because its extended -40C to +125C temperature grade survives under-hood and cabin thermal stress while the on-chip 2 comparators and programmable voltage reference can directly interface with analog sensors such as thermistors and battery monitors. Its 1.75KB OTP holds ~1K instructions - enough for typical body-control logic including door lock sequencing, wiper control, and lighting PWM. The 20 MHz clock yields a 200 ns instruction cycle that comfortably meets 10 ms-class response budgets. Compared with newer flash-based PIC16F-series MCUs the OTP variant cuts BOM cost by ~15-20% in high-volume automotive production where firmware is locked.
Được đề xuất
White Goods and Appliance Control
Washing machines, dishwashers, microwave ovens and HVAC controllers commonly use the PIC16CE624-20E/P because its 13 digital I/O pins can directly drive seven-segment displays, relays, and triac interfaces without external glue logic. The 128-byte EEPROM stores user settings (timer presets, wash cycles) across power cycles with 1M write-cycle endurance. The integrated watchdog timer with its own RC oscillator provides fail-safe recovery from software lockup in unattended appliance environments. Brown-out reset prevents EEPROM corruption during brown-out events on noisy mains-derived supplies.
Được đề xuất
Battery-Operated Sensor Signal Conditioning
The PIC16CE624-20E/P's two on-chip comparators combined with its programmable voltage reference enable a complete battery-monitoring or threshold-detection circuit without any external analog IC, reducing PCB area and BOM cost in wireless sensor nodes. The 3.0V minimum supply voltage matches single-cell Li-coin-cell chemistries directly. The low-power CMOS design and short 200 ns instruction cycle let the MCU wake, take a comparator reading, and return to sleep quickly - critical for battery-life-sensitive IoT edge devices. The 128-byte EEPROM can store calibration data per node.
Được đề xuất
Low-Cost Consumer Remote Controls
Infrared and RF remote controls benefit from the PIC16CE624-20E/P's low unit cost, 1.75KB OTP for fixed IR/RF protocol stacks (RC5, NEC, proprietary), and 13 I/O for keypad scanning plus LED indicators. The 20 MHz instruction cycle supports standard 38 kHz IR carrier generation in software with timing headroom for protocol encoding. Its small 18-pin PDIP footprint enables slim remote form factors. The extended temperature grade supports outdoor gate-remote and garage-opener applications exposed to summer heat and winter cold.
Được đề xuất
Discrete Logic Replacement in Industrial Controls
Industrial control boards that previously used dozens of 74-series logic ICs can be consolidated onto a single PIC16CE624-20E/P, replacing glue logic with firmware at lower cost and higher reliability. The 13 I/O pins handle multiple input signals (limit switches, sensors) and outputs (relays, solenoids, indicator LEDs). Brown-out reset and watchdog timer protect against industrial EMI events that cause logic glitches in discrete designs. The 35-instruction RISC core is small enough that legacy 74HC logic functions can be ported by technicians familiar with ladder logic but new to microcontrollers.
Được đề xuất
Simple ADC Front-End Using On-Chip Comparators
The PIC16CE624-20E/P's two comparators plus programmable voltage reference form a complete dual-threshold analog monitor or a simple successive-approximation ADC front-end, replacing dedicated ADC ICs in cost-sensitive designs. Combined with firmware-driven reference switching, the part can resolve 8+ bits of measurement for thermistor bridges, photocells, or simple pressure sensors. The 200 ns instruction cycle provides 5 MIPS throughput, enough to read and process a comparator-based ADC sample in under 50 us - suitable for low-bandwidth sensor logging. The 64-byte SRAM holds scratch conversion state without needing external memory.
Được đề xuất
Educational and Hobby Embedded Projects
The PIC16CE624-20E/P remains a useful teaching tool for embedded-systems courses covering OTP programming, RISC architectures, and on-chip peripherals, even though flash MCUs have largely replaced it in commercial designs. Its 18-pin PDIP form factor is breadboard-friendly and standard through-hole sockets simplify lab work. The 35-instruction RISC core is small enough for students to master in a single semester while still being powerful enough to build line-following robots, simple data loggers, and educational timer circuits. Compatibility with the PIC16F84A-P development environment allows students to prototype in flash and migrate to the OTP version for class-project final assemblies.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC16CE624-20E/P — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | PIC16CE624-20I/P | PIC16CE623-20I/P | PIC16CE624-04/P | PIC16CE624-20/P | PIC16F84A-20I/P |
|---|---|---|---|---|---|---|
| Package | 18-pin PDIP (300 mil, through-hole) | 18-pin PDIP (same) | 18-pin PDIP (same) | 18-pin PDIP (same) | 18-pin PDIP (same) | 18-pin PDIP (same) |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Maximum Clock | 20 MHz | 20 MHz | 20 MHz | 4 MHz | 20 MHz | 20 MHz |
| Temperature Grade | Extended (E): -40C to +125C | Industrial (I): -40C to +85C | Industrial (I): -40C to +85C | Extended (E): -40C to +125C | Commercial: 0C to +70C | Industrial (I): -40C to +85C |
| Program Memory Type | OTP (1.75 KB) | OTP (1.75 KB) | OTP (1.75 KB) | OTP (1.75 KB) | OTP (1.75 KB) | Flash (1.75 KB, re-programmable) |
| EEPROM Data Memory | 128 bytes | 128 bytes | 128 bytes | 128 bytes | 128 bytes | 64 bytes |
| On-chip Comparators | 2 | 2 | 0 | 2 | 2 | 0 |
| Programmable Vref | Yes | Yes | No | Yes | Yes | No |
Bảo phân biệt quan trọng
- Extended automotive temperature grade (-40C to +125C) at 20 MHz clock (vsPIC16CE624-20I/P)
- Includes 2 on-chip analog comparators and programmable voltage reference (vsPIC16CE623-20I/P)
- Higher 128-byte EEPROM versus flash-based siblings' 64 bytes (vsPIC16F84A-20I/P)
Ghi chú thiết kế
Place a 0.1 uF decoupling capacitor as physically close as possible between VDD (pin 11) and VSS (pin 10), using short wide traces to minimize series inductance. For designs switching high-current loads via the I/O pins (relays, solenoids), add a bulk 10 uF aluminum or tantalum capacitor on the VDD rail within 1 inch of the MCU. The PIC16CE624-20E/P's brown-out reset triggers at ~2.5 V typical (per Microchip datasheet) and holds the device in reset until VDD rises to a valid level - never bypass this feature with a direct VDD tie. Estimated: at 20 MHz clock with all peripherals enabled, IDD is ~5 mA typical, so the decoupling network must handle this transient load.
Remember that the PIC16CE624 is OTP (One-Time-Programmable) - once programmed, the program memory cannot be erased or rewritten. The /P package has no quartz window, so even UV erasure is impossible. Always develop and debug firmware on a flash-based sibling such as the PIC16F84A (same 18-pin PDIP footprint, same PIC16 mid-range core) before committing to OTP programming. A single bad firmware revision on the OTP part means scrapping the entire batch of programmed MCUs - a costly mistake in production.
Keep the oscillator traces (OSC1/OSC2, pins 8 and 9) short and surrounded by a ground guard ring if using a crystal, to minimize stray capacitance and EMI pickup. For designs using the internal RC oscillator instead of an external crystal, leave OSC1 floating or tie to VDD through a 10 k resistor per Microchip recommendation. Place any reset network on MCLR (pin 1) within 0.5 inch of the pin and use a 10 k pull-up to VDD with an optional 100 nF cap to ground for a controlled rise time - this prevents false resets on noisy power-up transients common in automotive environments.
Thông tin tuân thủ
RoHS compliant per Microchip product page. The -20E/P variant is automotive-grade temperature but is not formally AEC-Q100 qualified (use PIC16-Q1 parts for AEC-Q100); halogen-free status not stated in available data.
