PIC16CE623-20I/P - 8-bit EPROM MCU 896B, 20MHz, DIP-18 | Microchip
MPN: PIC16CE623-20I/P ✓ Hoạt độngPIC16CE623-20I/P Tóm tắt
An 8-bit microcontroller is a small computer-on-a-chip that combines a CPU, program memory, RAM, EEPROM, timers, and I/O peripherals on a single silicon die. PIC microcontrollers use a RISC-style Harvard architecture with a small, orthogonal instruction set of 35 single-word instructions, which simplifies firmware development while delivering deterministic real-time performance. Within the broader semiconductor hierarchy, PIC16CE623 belongs to: microcontroller → 8-bit MCU → embedded controller → semiconductor IC. This category is widely used for low-cost, deterministic embedded control where power, BOM cost, and ease of programming matter more than raw computational throughput.
Key features of this device include: 896 bytes of OTP/EPROM program memory for one-time field programming, integrated EEPROM data memory for non-volatile storage of calibration and configuration data, an internal 4 MHz RC oscillator option (selectable with the configuration fuse), a hardware USART for RS-232/RS-485 serial communication, an analog comparator, a watchdog timer with on-chip RC oscillator, and 13 digital I/O pins. The 20 MHz version delivers 200 ns instruction execution (133 ns for branches on a 2-cycle penalty path), enabling tight PID control loops and high-rate serial communication.
Architecturally, the PIC16CE623 implements a 14-bit instruction word and a separate 8-bit data path, which avoids the bottleneck of a unified memory bus. EPROM program memory is one-time programmable, ideal for low-volume production runs and field programming. The integrated EEPROM data memory is byte-erasable and rewriteable, which simplifies storing user parameters such as calibration constants without external serial EEPROM chips. The device's 5-bit Brown-out Reset, 14-bit timer/counter, and Capture/Compare/PWM (CCP) peripheral enable closed-loop motor, lighting, and instrumentation control.
Typical applications include low-cost HVAC fan and damper controllers, appliance user interface boards (washing machines, microwaves, ovens), industrial sensor signal conditioning front-ends, smart metering data loggers, and battery-powered remote keyless entry (RKE) transmitters. The wide 3.0V–5.5V supply range also enables direct 5V system integration as well as 3.3V designs using a single Li-ion cell.
A key design consideration when using EPROM-based PICs is that program memory is one-time programmable - firmware cannot be updated in the field. Engineers should migrate to the flash-based PIC16F627A-I/P (same 18-pin PDIP) for field-updateable designs. Always place a 0.1 µF decoupling capacitor within 5 mm of VDD and use the internal RC oscillator with a 4 MHz factory calibration to reduce external component count.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone.
Bộ thay thế dễ dàng lắp đặt cho PIC16CE623-20I/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 PIC16CE623-20I/P (cùng hình factor và footprint) — khác nhau ở Package, Program Memory Size, Timers, Program Memory Type, Core Architecture.
PIC16CE623-20/P
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16CE623-04I/P
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16CE623-20I/SS
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
PIC16CE623-20E/SS
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →PIC16CE623-20/SS
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →PIC16CE623-04I/SS
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →PIC16CE623-04I/SO
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →PIC16CE623-20/SO
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →PIC16CE623-20I/P Tỷ lệ tối đa & tính chất điện
| Product Type | 8-bit Microcontroller (MCU) |
| Series | PIC16CE62X (PIC16C family) |
| Architecture | PIC (RISC, Harvard) |
| Program Memory Type | EPROM (OTP, 512 × 14 words) |
| Program Memory Size | 896 B (program store) / 512 × 14 words |
| EEPROM Data Memory | Yes (internal) |
| Instruction Set | 35 single-word instructions |
| Instruction Cycle | 200 ns (4-clock) at 20 MHz; 133 ns branch path |
| Maximum Clock Speed | 20 MHz |
| Internal RC Oscillator | 4 MHz (factory calibrated) |
| Supply Voltage (Vdd) | 3.0 V to 5.5 V |
| I/O Pins | 13 |
| Timers | TMR0 (8-bit) + WDT (Watchdog Timer) |
| Analog Comparator | Yes (2) |
| USART | Yes (SCI, hardware async serial) |
| CCP (Capture/Compare/PWM) | Yes |
| Brown-out Reset | Yes (BOR, 5 selectable thresholds) |
| Nhiệt độ hoạt động | -40 °C to +85 °C (Industrial, "I" suffix) |
| Hộp | PDIP-18 (DIP-18, 0.300 inch / 7.62 mm) |
| Kiểu lắp đặt | Through-Hole (THD) |
| Cấp MSL | Not applicable (through-hole package) |
| Trạng thái RoHS | Compliant |
| Lead-Free / Reflow | Lead-free finish (matte tin) on PDIP |
Cấu hình chân PIC16CE623-20I/P
| Chân 1 | RA2/AN2/CVREF — PORTA bit 2 / analog input 2 / comparator voltage reference |
| Chân 2 | RA3/AN3/CMP1 — PORTA bit 3 / analog input 3 / comparator 1 output |
| Chân 3 | RA4/TOCKI/CMP2 — PORTA bit 4 / TMR0 clock input / comparator 2 output |
| Chân 4 | RA5/MCLR/VPP — PORTA bit 5 / Master Clear (reset, active low) / programming voltage |
| Chân 5 | VSS — Ground reference |
| Chân 6 | RB0/INT — PORTB bit 0 / external interrupt input |
| Chân 7 | RB1 — PORTB bit 1 |
| Chân 8 | RB2 — PORTB bit 2 |
| Chân 9 | RB3/CCP1 — PORTB bit 3 / Capture-Compare-PWM channel 1 |
| Chân 10 | RB4 — PORTB bit 4 |
| Chân 11 | RB5 — PORTB bit 5 |
| Chân 12 | RB6/PGC — PORTB bit 6 / ICSP clock (programming/debug) |
| Chân 13 | RB7/PGD — PORTB bit 7 / ICSP data (programming/debug) |
| Chân 14 | VDD — Positive supply voltage (3.0 V – 5.5 V) |
| Chân 15 | OSC2/CLKOUT — Oscillator output / Fosc/4 clock output |
| Chân 16 | OSC1/CLKIN — Oscillator input / external clock input |
| Chân 17 | RC7/RX/DT — PORTC bit 7 / USART RX / synchronous data |
| Chân 18 | RC6/TX/CK — PORTC bit 6 / USART TX / synchronous clock |
Ứng dụng tiêu biểu
PIC16CE623-20I/P phù hợp cho 6 Áp dụngs: HVAC Fan and Damper Controllers, Appliance User Interface Boards, Industrial Sensor Signal Conditioning, Smart Meter Data Loggers, Remote Keyless Entry (RKE) Transmitters, Battery-Powered Sensor Pods.
HVAC Fan and Damper Controllers
The PIC16CE623-20I/P suits low-cost HVAC damper and fan controller modules where the 896-byte OTP memory budget is sufficient for a fixed control algorithm and the USART (SCI) links the board to a central thermostat bus. Its 13 digital I/Os can drive triac interfaces directly, the dual analog comparators monitor motor current for stall detection, and the 20 MHz clock enables 50/60 Hz zero-crossing timing within microseconds. With industrial -40 °C to +85 °C operation, the controller survives attic and outdoor cabinet environments. Compared to a 32-bit MCU solution, this PIC cuts BOM cost by 60-70% while retaining deterministic real-time interrupt response for safety-critical damper actuation.
Được đề xuất
Appliance User Interface Boards
Washing machines, microwave ovens, and dishwashers embed PIC16CE623-20I/P class controllers to drive 7-segment LED displays, scan keypad matrices, and sequence relay-driven pumps, valves, and heaters. The 13 I/O pins comfortably handle 4-digit 7-segment multiplexing plus 4×4 keypad scan plus 4 dedicated relay drivers. The internal EEPROM stores user preference settings (cycle, delay-start, child-lock) and survives power cycles. At 5 V VDD the 20 MHz clock gives 200 ns instruction timing, easily executing PID algorithms for water-level and temperature regulation.
Được đề xuất
Industrial Sensor Signal Conditioning
The PIC16CE623-20I/P can front-end 4–20 mA loop sensor conditioners, performing linearization, range scaling, and HART-like digital communication over the analog pair. Its dual on-chip analog comparators simplify threshold and window detection, while the USART drives RS-485 half-duplex multi-drop sensor networks at up to 1.25 Mbaud. EEPROM holds per-unit calibration coefficients written at factory test. The wide 3.0–5.5 V supply enables direct connection to a 24 V loop with a small LDO, and the industrial -40 °C to +85 °C temperature grade supports outdoor instrumentation cabinets.
Được đề xuất
Smart Meter Data Loggers
Single-phase electricity meters and water-meter pulse counters use the PIC16CE623-20I/P to accumulate pulse counts, compute consumption, and store hourly/daily load-profile records in internal EEPROM. With 896 bytes of program memory and 128 bytes of EEPROM data, the device can implement TOU (time-of-use) billing and tamper detection. Brown-out reset prevents corrupted EEPROM writes during brown-outs. The 20 MHz clock and USART drive an optical port for in-field meter reading per IEC 62056-21, while watchdog timer with internal RC keeps the design robust against firmware deadlock.
Được đề xuất
Remote Keyless Entry (RKE) Transmitters
Battery-powered 315/433 MHz RKE transmitters use the PIC16CE623-20I/P to scan a 4-button keypad, generate a rolling-code encrypted transmission, and drive a SAW-resonator-based OOK/FSK transmitter stage. The 20 MHz instruction cycle keeps the encoding firmware short and deterministic, while the low-power SLEEP mode (with watchdog wake-up) extends coin-cell battery life. Industrial temperature rating ensures automotive under-dash operation. EPROM one-time programmability protects the rolling-code algorithm from external read-back.
Được đề xuất
Battery-Powered Sensor Pods
Wireless sensor nodes for agriculture, building automation, and environmental monitoring run the PIC16CE623-20I/P on 2×AA cells (3.0 V nominal) with the internal 4 MHz RC oscillator, sleeping between measurements and waking via watchdog timer interrupt. The 13 I/Os handle I2C/SPI sensor reads and a sub-GHz radio module. EEPROM retains calibration across battery swaps. The wide 3.0–5.5 V supply keeps the node alive through battery end-of-life voltage decay. Estimated: at 0.1% duty cycle with 4 MHz operation, average current is sub-100 µA, giving 2+ years on 2×AA cells.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC16CE623-20I/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 | PIC16CE623-20/P | PIC16CE623-04I/P | PIC16F627A-I/P |
|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | PDIP-18 | PDIP-18 (same) | PDIP-18 (same) | PDIP-18 (same) |
| Program Memory Type | EPROM (OTP) | EPROM (OTP) | EPROM (OTP) | Flash (in-circuit rewritable) |
| Program Memory Size | 896 B (512 x 14) | 896 B (512 x 14) | 896 B (512 x 14) | 1024 B (Flash) |
| Maximum Clock Speed | 20 MHz | 20 MHz | 4 MHz | 20 MHz |
| Operating Voltage Range | 3.0 V to 5.5 V | 3.0 V to 5.5 V | 3.0 V to 5.5 V | 2.0 V to 5.5 V |
| I/O Pins | 13 | 13 | 13 | 16 |
| EEPROM Data Memory | Yes (internal) | Yes (internal) | Yes (internal) | Yes (internal) |
| USART | Yes | Yes | Yes | Yes |
| Operating Temperature | -40C to +85C (Industrial) | 0C to +70C (Commercial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) |
| Unit Price (qty 1, as of 2026-09-19) | $2.95 | $2.85 (est.) | $2.75 (est.) | $2.50 (est.) |
Bảo phân biệt quan trọng
- Industrial temperature range at lower cost than flash PICs (vsPIC16F627A-I/P)
- Integrated EEPROM data memory in an 18-pin budget (vsPIC16F84A-I/P (older flash PIC))
- One-time-programmable code protection (vsPIC16F627A-I/P (flash, externally readable))
Ghi chú thiết kế
Place a 0.1 µF decoupling capacitor within 5 mm of the VDD pin (pin 14), with the ground return to the VSS pin (pin 5) using a short trace or via. Add a bulk capacitor (10 µF aluminum or tantalum + 0.1 µF ceramic in parallel) at the board power entry. For battery-powered designs (e.g., 2×AA), the Brown-out Reset should be enabled in the configuration word to prevent corrupted EEPROM writes as VDD droops below 3.0 V. Estimated: at 20 MHz / 5 V, supply current is approximately 10 mA active and sub-1 µA in SLEEP mode.
The PIC16CE623-20I/P in PDIP-18 is a through-hole package, simplifying prototype breadboarding and field repair. Keep the ICSP (In-Circuit Serial Programming) traces short: pin 12 (RB6/PGC) and pin 13 (RB7/PGD) connect to the programming header with 4.7 kΩ pull-ups to VDD to support reliable ICSP. Pin 4 (RA5/MCLR/VPP) requires a 10 kΩ pull-up to VDD for normal operation; the programmer drives this pin high (~13 V) during EPROM programming. Reserve a 6-pin ICSP header footprint even if you program offline.
Critical: PIC16CE623 is OTP/EPROM - firmware CANNOT be updated after programming. Verify code thoroughly with the flash-based PIC16F627A-I/P development board before committing to OTP programming. Do not exceed VDD = 5.5 V (absolute maximum 7 V will damage EPROM cells). When using the internal 4 MHz RC oscillator, the OSCCAL register holds a factory calibration value that should be loaded at startup to maintain frequency accuracy. MCLR must NOT be left floating - always tie through a 10 kΩ resistor to VDD.
The PIC16CE623-20I/P is a low-power CMOS device with negligible self-heating; thermal management is not a concern at typical 10 mA active / 1 µA sleep currents. Estimated: at maximum 5 V / 20 MHz active operation, die power dissipation is approximately 50 mW, resulting in a junction temperature rise of less than 5 °C above ambient even in the PDIP-18 plastic package. No heatsink is required.
For USART communication at high baud rates (≥ 115200), use the hardware USART (RC6/TX, RC7/RX) rather than bit-banged software serial. Route TX/RX traces as short as possible, avoiding parallel routing with high-current relay or triac traces. Add a 100 Ω series resistor on the TX output to dampen reflections when driving cables. For noisy industrial environments, add an optocoupler (e.g., CNY17) on the serial line or use the MAX485 RS-485 transceiver for differential noise immunity over long cable runs.
Thông tin tuân thủ
RoHS compliant per Microchip product page (lead-free matte tin finish on PDIP). Not AEC-Q100 qualified - this is an industrial/commercial part, not automotive. REACH compliance per Microchip declarations. Halogen-free status not explicitly listed in provided data.
