PIC16CE625/JW - 8-Bit EPROM MCU, 20MHz, 3.5KB | Microchip
MPN: PIC16CE625/JW ✗ Cuối đờiPIC16CE625/JW Tóm tắt
A microcontroller (MCU) is a single-chip computer containing a CPU, memory, and programmable I/O peripherals. An 8-bit MCU like the PIC16CE625/JW processes data 8 bits at a time, striking a balance between simplicity, cost, and deterministic real-time control. Within the broader semiconductor taxonomy, MCUs sit under microcontrollers -> embedded processors -> digital ICs -> integrated circuits. The PIC16CE62X series specifically targets low-cost, high-performance, fully-static CMOS applications requiring on-chip non-volatile data storage, where the 'CE' suffix denotes integrated EEPROM.
Key features include 13 digital I/O pins, two analog comparators, a Watchdog Timer, Power-On Reset, Brown-Out Detect, an 8-bit timer/counter (Timer0) and an 8-bit timer/counter with 8-bit period register (Timer2). The device runs from a single 3V to 5.5V supply (commercial/industrial) and supports in-circuit serial programming via ICSP. The 18-CERDIP windowed package exposes the die to UV light for erasure, making the part ideal for engineering development but unsuitable for high-volume space-constrained production.
The PIC16CE625/JW uses a Harvard-architecture RISC core with separate program and data buses, enabling single-cycle instruction execution for most opcodes (200ns at 20MHz). The integrated 128-byte EEPROM provides 1M erase/write cycles endurance, suitable for configuration storage and runtime calibration data. Brown-out detect and power-on reset protect against unreliable supply conditions, while the WDT safeguards against code lockup in noisy environments.
Typical applications include industrial control systems, appliance controls, security and alarm panels, automotive body electronics (non-safety), and remote sensor node controllers. The windowed CERDIP package also makes the part a strong fit for low-volume engineering prototyping where firmware iteration is expected.
When designing with this device, ensure the brown-out detect voltage is set below the minimum operating supply to avoid spurious resets. The EPROM window requires a quartz UV eraser for reprogramming; for production, migrate to the OTP 'JW-less' or flash-based PIC16F628A equivalent after firmware is finalized. I/O drive strength is 25mA sink/source per pin, sufficient to drive LEDs and small relays directly.
This page synthesizes distributor pricing, same-family drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
Bộ thay thế dễ dàng lắp đặt cho PIC16CE625/JW — 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 PIC16CE625/JW (cùng hình factor và footprint) — khác nhau ở I/O Pins, Package, Program Memory Size, Program Memory Type, Timers.
PIC16CE624/JW
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16CE626/JW
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC16CE623/JW
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC16C717/JW
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16C774/JW
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16CE625/JW Tỷ lệ tối đa & tính chất điện
| Core | 8-bit PIC RISC |
| Instruction Set | 35 instructions, single-cycle (200ns at 20MHz) |
| Program Memory Type | EPROM, UV-erasable (windowed CERDIP) |
| Program Memory Size | 3.5 KB (2K x 14 words) |
| Data RAM | 128 x 8 bytes |
| Data EEPROM | 128 x 8 bytes |
| Tần số xung maksimum | 20 MHz |
| Instruction Cycle Time | 200 ns |
| Supply Voltage (Vcc) | 3 V to 5.5 V |
| I/O Pins | 13 |
| Timers | Timer0 (8-bit), Timer2 (8-bit) |
| Analog Peripherals | 2 comparators |
| Reset & Supervision | Power-On Reset (POR), Brown-Out Detect (BOD), Watchdog Timer (WDT) |
| Hộp | 18-CERDIP Window (300 mil) |
| Oscillator Type | External (RC or crystal) |
| ICSP | Yes (In-Circuit Serial Programming) |
Cấu hình chân PIC16CE625/JW
| Chân 1 | RA2 — Bidirectional I/O / analog comparator input |
| Chân 2 | RA3 — Bidirectional I/O / analog comparator input |
| Chân 3 | RA4/T0CKI — Bidirectional I/O / Timer0 clock input (open-drain) |
| Chân 4 | RA5 — Bidirectional I/O / alternate function |
| Chân 5 | GND — Ground reference |
| Chân 6 | RB0/INT — Bidirectional I/O / external interrupt |
| Chân 7 | RB1 — Bidirectional I/O |
| Chân 8 | RB2 — Bidirectional I/O |
| Chân 9 | RB3 — Bidirectional I/O |
| Chân 10 | RB4 — Bidirectional I/O / interrupt-on-change |
| Chân 11 | RB5 — Bidirectional I/O / interrupt-on-change |
| Chân 12 | RB6 — Bidirectional I/O / interrupt-on-change / ICSP clock |
| Chân 13 | RB7 — Bidirectional I/O / interrupt-on-change / ICSP data |
| Chân 14 | Vcc — Positive supply (3V to 5.5V) |
| Chân 15 | OSC2/CLKOUT — Oscillator output / clock out |
| Chân 16 | OSC1/CLKIN — Oscillator input / external clock in |
| Chân 17 | RA0 — Bidirectional I/O |
| Chân 18 | RA1 — Bidirectional I/O |
Ứng dụng tiêu biểu
PIC16CE625/JW phù hợp cho 6 Áp dụngs: Industrial Control Systems, Appliance Control Boards, Security and Alarm Panels, Automotive Body Electronics, Remote Sensor Node Controllers, Engineering Development and Prototyping.
Industrial Control Systems
The PIC16CE625/JW fits industrial control designs requiring deterministic 8-bit processing with on-chip EEPROM for parameter storage. Its 20MHz clock delivers 200ns instruction cycles, fast enough for closed-loop PID at sub-millisecond update rates. The 13 I/O pins drive indicator LEDs, optocouplers, and small relays directly at 25mA sink/source. The integrated 128-byte EEPROM (1M erase/write cycles) stores calibration coefficients and runtime counters that survive power cycles, eliminating external EEPROM ICs. Brown-out detect and watchdog timer protect against supply transients common on factory floors.
Được đề xuất
Appliance Control Boards
White-goods and small appliance controls (coffee machines, washing machines, microwave ovens) commonly use the PIC16CE625/JW for its low cost, integrated EEPROM, and robust reset peripherals. The EPROM program memory holds fixed firmware while EEPROM stores user preferences and cycle counters. Brown-out detect prevents erroneous behavior during brown-out conditions on the rectified mains supply. The 18-CERDIP package through-hole form factor suits hand-soldered and wave-soldered production lines typical of low-volume appliance manufacturing.
Được đề xuất
Security and Alarm Panels
Security alarm control panels use the PIC16CE625/JW because its 128-byte EEPROM retains zone configurations and installer codes across power cycles, while EPROM holds the unchangeable alarm logic. Brown-out detect protects against tamper-induced supply glitches, and the watchdog timer recovers from EMI-induced code lockup. The two on-chip analog comparators enable direct interface to PIR motion sensors and magnetic reed switches without external op-amps, reducing BOM cost for entry-level alarm panels.
Được đề xuất
Automotive Body Electronics
Non-safety automotive body modules (window lifters, mirror controllers, interior lighting) historically used the PIC16CE625/JW family because of its integrated EEPROM, watchdog timer, and wide supply range (3V to 5.5V). The EPROM memory holds fixed body-control firmware, while EEPROM stores trim settings. AEC-Q100 is not applicable here (non-automotive grade), so designers should verify margin for under-hood temperature and supply transients. For new designs, Microchip recommends PIC16F628A migration in plastic packages.
Được đề xuất
Remote Sensor Node Controllers
Remote wireless sensor nodes leverage the PIC16CE625/JW's static CMOS design, which allows the oscillator to be stopped and restarted without losing register state. This enables duty-cycled sleep modes where the MCU wakes periodically to read a sensor, transmit via an external radio, and return to sleep. The 128-byte EEPROM stores sensor calibration, node ID, and last-known-state values. Brown-out detect protects against weak battery conditions that could otherwise corrupt EEPROM during write cycles.
Được đề xuất
Engineering Development and Prototyping
The /JW windowed CERDIP package makes the PIC16CE625/JW specifically suited for firmware development where iterative UV erasure is required. Engineers can program the EPROM, test in-circuit, erase under UV light, and re-program hundreds of times during firmware qualification - a workflow impossible with one-time-programmable (OTP) plastic packages. Windowed CERDIP parts also serve as low-volume production for specialty instruments where firmware iteration is still expected, such as research equipment and aerospace prototypes.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC16CE625/JW — 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/JW | PIC16CE626/JW | PIC16CE623/JW | PIC16C717/JW | PIC16C774/JW |
|---|---|---|---|---|---|---|
| Package | 18-CERDIP Window | 18-CERDIP Window - same | 18-CERDIP Window - same | 18-CERDIP Window - same | 18-CERDIP Window - same | 18-CERDIP Window - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Memory | 3.5KB EPROM (2K x 14) | 2KB EPROM (1K x 14) | 16KB EPROM (8K x 14) | 896B EPROM (512 x 14) | 16KB EPROM (8K x 14) | 16KB EPROM (4K x 14) |
| Data EEPROM | 128 bytes | 128 bytes | 128 bytes | 128 bytes | none (different family) | none (different family) |
| Maximum Clock | 20 MHz | 20 MHz | 20 MHz | 20 MHz | 20 MHz | 20 MHz |
| I/O Pins | 13 | 13 | 13 | 13 | 16 | 16 |
| Analog Peripherals | 2 comparators | 2 comparators | 2 comparators | 2 comparators | 8-ch 10-bit ADC + comparators | 12-bit ADC |
| Supply Voltage | 3V to 5.5V | 3V to 5.5V | 3V to 5.5V | 3V to 5.5V | 3V to 5.5V | 3V to 5.5V |
| Lifecycle Status | NRND | NRND | NRND | NRND | NRND | NRND |
Bảo phân biệt quan trọng
- Highest-density EPROM in PIC16CE62X 18-pin family (vsPIC16CE624/JW)
- Integrated 128-byte EEPROM data memory (vsPIC16C717/JW)
- Windowed CERDIP for firmware development cycles (vsPIC16F628A-I/P)
- Bare-bones 8-bit PIC cost-optimized architecture (vsPIC16C774/JW)
Ghi chú thiết kế
The PIC16CE625/JW windowed CERDIP package uses UV-erasable EPROM that requires a quartz UV eraser (typically 12,000 uW*sec/cm^2 for ~20 minutes). Erasure with sunlight or fluorescent lighting is too weak and risks incomplete erasure, which can produce intermittent code failures. Always verify erasure by reading all EPROM locations as 0x3FFF (or 0xFFF) before reprogramming.
Brown-Out Detect (BOD) must be configured for a threshold BELOW the minimum valid Vcc of 3.0V, otherwise the device may enter BOD reset during legitimate low-battery operation. The BOD is enabled via the configuration word at programming time and is not changeable at runtime. For battery applications, use BOD disabled and implement software supply-voltage monitoring via the internal bandgap reference.
Estimated: at 5V Vcc, 20MHz clock, all I/O unloaded, the PIC16CE625/JW draws approximately 15mA active (75mW). Adding 13 I/O pins each sinking 25mA at 0.4V saturation adds 130mA (520mW), bringing worst-case die power to ~595mW. The CERDIP package provides a thermal resistance of roughly 60 C/W junction-to-ambient, yielding a 36C rise. For sustained high-I/O loads, derate by 50% to stay below 85C junction.
Place the external crystal or ceramic resonator within 10mm of OSC1/OSC2 pins to minimize stray capacitance. Add a 1M-ohm parallel resistor across the crystal to bias the inverter into its linear region and guarantee startup at low Vcc. Keep high-current switching traces (relays, LEDs) physically separated from the oscillator traces by at least 3mm to avoid frequency pulling.
The ICSP programming pins RB6/RB7 must not be pulled low during normal operation, or the device may inadvertently enter programming mode. Add 10k-ohm pull-ups on RB6 and RB7 to Vcc. If the application uses RB6/RB7 as outputs driving LEDs, drive them through a series resistor of at least 470 ohms to limit current during accidental ICSP activation.
Thông tin tuân thủ
CERDIP package is generally non-RoHS due to lead-containing ceramic-glass seals. Lead-free / halogen-free status is unknown for this windowed-CERDIP variant. Not AEC-Q100 qualified; not recommended for new automotive designs.
