PIC16C622A-40/P - 8-Bit EPROM MCU, 3.5KB, 40MHz, PDIP-18
MPN: PIC16C622A-40/P ✗ Cuối đờiPIC16C622A-40/P Tóm tắt
The PIC16C622A is part of the PIC16C62X family of 18 and 20-pin ROM/EPROM-based microcontrollers. An EPROM-based MCU (Erasable Programmable Read-Only Memory microcontroller) is a member of the broader 8-bit microcontroller category and sits inside the larger hierarchy of microcontrollers -> embedded microcontrollers -> microprocessors -> semiconductors. EPROM-based parts are one-time or window-erasable and are typically used for prototype development and low-volume production where Flash-based devices are not yet validated.
Key features include 13 I/O pins with individual direction control, one 8-bit timer (TMR0) with an 8-bit prescaler, a Watchdog Timer with its own on-chip RC oscillator for reliable recovery, Power-on Reset, Power-up Timer, and Oscillator Start-up Timer. The integrated analog comparator supports up to four input channels via the AN0-AN3 pins, enabling direct interface with analog sensors without an external op-amp. The CMOS process provides low power consumption, with a typical supply current of only a few milliamps at full clock.
Architecturally, the PIC16C622A uses a Harvard-style RISC core with a 14-bit instruction word and an 8-bit data path. The 35-instruction set, all single-cycle except branches, simplifies coding and timing analysis. The device supports external crystal, ceramic resonator, or RC oscillator configurations, plus a low-power LP oscillator option for battery-powered designs. The EPROM cell enables window-erasable prototype iteration when the JW package variant is used.
Typical applications include appliance control, automotive body electronics, industrial sensor interfaces, low-cost remote controls, and consumer white goods where the integrated comparator simplifies analog front-end design. Compared with mask-ROM siblings, the EPROM variant is preferred for engineering samples and pre-production runs.
Designers should note that the PIC16C622A is OTP (One-Time Programmable) in the plastic PDIP package and is not re-programmable in-circuit; verify firmware carefully before programming. The 40MHz speed grade requires a 10MHz input clock at the maximum 4:1 PLL-less oscillator configuration.
This page synthesizes distributor stock and pricing, drop-in EPROM/Flash equivalents in the same PDIP-18 footprint, and practical design notes not found in the manufacturer datasheet alone.
Bộ thay thế dễ dàng lắp đặt cho PIC16C622A-40/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 PIC16C622A-40/P (cùng hình factor và footprint) — khác nhau ở Package, ADC, Operating Temperature, Timers, I/O Pins.
PIC16F88-I/P
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16F1825-I/P
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16C621A-40/P
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16C622-40/P
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
PIC16C622A-04E/P
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16C622A-40/P Tỷ lệ tối đa & tính chất điện
| Product Type | 8-bit Microcontroller (EPROM/ROM-based) |
| Family | PIC16C62X (PICmicro mid-range) |
| Program Memory Type | EPROM (OTP in PDIP package) |
| Program Memory Size | 3.5 KB (2K x 14 words) |
| RAM Size | 128 bytes |
| Maximum CPU Frequency | 40 MHz |
| Supply Voltage Range | 2.5 V to 5.5 V (3.3 V / 5 V nominal) |
| Number of I/O Pins | 13 |
| Timers | 1 x 8-bit (TMR0) with prescaler |
| Watchdog Timer | Yes (with dedicated on-chip RC oscillator) |
| Analog Comparator | Yes, 1 (4 input channels via AN0-AN3) |
| ADC | None (no integrated ADC) |
| Instruction Set | 35 single-word instructions (14-bit wide) |
| Oscillator Modes | XT, HS, LP, RC (external crystal/resonator/RC) |
| Hộp | 18-pin PDIP (Plastic DIP, 0.300 inch / 7.62mm pitch) |
| Nhiệt độ hoạt động | 0C to +70C (commercial grade) |
| Kiểu lắp đặt | Through-Hole |
| Tube Quantity | 25 pcs per tube (per industry standard) |
Cấu hình chân PIC16C622A-40/P
| Chân 1 | RA2/AN2 — Bidirectional I/O / analog comparator input 2 |
| Chân 2 | RA3/AN3 — Bidirectional I/O / analog comparator input 3 |
| Chân 3 | RA4/T0CKI — Bidirectional I/O / TMR0 external clock input |
| Chân 4 | MCLR/VPP — Master Clear (Reset) input / programming voltage |
| Chân 5 | VSS — Ground reference |
| Chân 6 | RB0/INT — Bidirectional I/O / external interrupt input |
| Chân 7 | RB1 — Bidirectional I/O |
| Chân 8 | RB2 — Bidirectional I/O |
| Chân 9 | RB3 — Bidirectional I/O |
| Chân 10 | RB4 — Bidirectional I/O |
| Chân 11 | RB5 — Bidirectional I/O |
| Chân 12 | RB6 — Bidirectional I/O |
| Chân 13 | RB7 — Bidirectional I/O |
| Chân 14 | VDD — Positive supply (2.5V to 5.5V) |
| Chân 15 | OSC2/CLKOUT — Oscillator crystal output / clock output |
| Chân 16 | OSC1/CLKIN — Oscillator crystal input / external clock input |
| Chân 17 | RA0/AN0 — Bidirectional I/O / analog comparator input 0 |
| Chân 18 | RA1/AN1 — Bidirectional I/O / analog comparator input 1 |
Ứng dụng tiêu biểu
PIC16C622A-40/P phù hợp cho 6 Áp dụngs: Appliance Control Boards, Automotive Body Electronics, Industrial Sensor Interfaces, Remote Control Transmitters, Consumer White Goods (Coffee Makers, Toasters), Hobbyist and Educational Boards.
Appliance Control Boards
The PIC16C622A-40/P is well suited to appliance control boards (washing machines, dishwashers, microwave ovens) because its 3.5 KB EPROM holds state-machine firmware plus lookup tables, while the integrated analog comparator directly senses line-voltage-derived signals via a resistive divider on AN0-AN3. The 40 MHz instruction throughput executes sensor-scan loops in microseconds, comfortably debouncing mechanical switches and timing relay drivers. OTP EPROM security prevents firmware extraction by competing service shops, which matters for brand-protection in white goods.
Được đề xuất
Automotive Body Electronics
In automotive body modules (mirror control, seat-position memory, lighting drivers) the PIC16C622A-40/P delivers 13 digital I/O to drive relays and read switches without an external I/O expander. The 2.5 V to 5.5 V supply range tolerates load-dump transients when paired with proper bulk capacitance. The integrated comparator monitors current-sense signals from lamp drivers. Designers should note the commercial 0C to +70C temp range is too narrow for under-hood modules; choose -40C to +125C industrial grade or PIC16F88-I/P instead.
Được đề xuất
Industrial Sensor Interfaces
Sensor interface modules (4-20 mA loop readers, thermistor bridges, photodiode amplifiers) benefit from the PIC16C622A-40/P's integrated analog comparator, which converts low-level analog signals directly to digital interrupts without an external op-amp. The 8-bit TMR0 with prescaler generates precise time bases for sensor-sampling windows. The Watchdog Timer recovers the MCU from firmware lockups caused by EMI in factory-floor environments. EPROM OTP security protects calibration coefficients embedded in firmware.
Được đề xuất
Remote Control Transmitters
Low-cost IR/RF remote controls use the PIC16C622A-40/P to encode button presses into Manchester or pulse-width modulation without an external encoder IC. The 13 I/O directly scan 6x3 matrix keypads, while TMR0 generates precise carrier frequencies (typically 38 kHz for IR). EPROM OTP prevents code extraction, protecting proprietary encoding schemes. The 2.5 V to 5.5 V supply enables two-AA-battery operation; quiescent current in sleep mode extends battery life to years.
Được đề xuất
Consumer White Goods (Coffee Makers, Toasters)
Small kitchen appliances leverage the PIC16C622A-40/P's integrated comparator to monitor temperature via NTC thermistor divider networks, eliminating an external op-amp and reducing BOM cost. The 13 I/O drive LEDs, triac-based heater control, and buzzer feedback directly. The 35-instruction RISC core simplifies coding for non-engineering teams. EPROM OTP is acceptable in this price-sensitive market where firmware rarely changes after release.
Được đề xuất
Hobbyist and Educational Boards
The PIC16C622A-40/P appears in legacy hobbyist designs and educational microcontroller trainers because of its simple 35-instruction RISC architecture, easy-to-program EPROM (via MPLAB PM3), and forgiving 2.5 V to 5.5 V supply. The integrated analog comparator introduces students to mixed-signal interfacing without an ADC. For new courses, instructors should consider PIC16F88-I/P instead, since it adds in-circuit debugging and eliminates the EPROM eraser step.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC16C622A-40/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 | PIC16F88-I/P | PIC16F1825-I/P | PIC16C621A-40/P | PIC16C622-40/P | PIC16C622A-04E/P |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | PDIP-18 (Through-Hole) | PDIP-18 - same | PDIP-18 - same | PDIP-18 - same | PDIP-18 - same | PDIP-18 - same |
| Program Memory | 3.5 KB EPROM (OTP) | 4 KB Flash | 8 KB Flash | 2 KB EPROM | 3.5 KB EPROM | 3.5 KB EPROM |
| Memory Type | EPROM (OTP) | Flash (reprogrammable) | Flash (reprogrammable) | EPROM (OTP) | EPROM (OTP) | EPROM (OTP) |
| Max Clock Speed | 40 MHz | 20 MHz | 32 MHz | 40 MHz | 40 MHz | 4 MHz |
| Integrated ADC | None | 10-bit ADC | 10-bit ADC | None | None | None |
| Analog Comparator | 1 (4 inputs) | 2 comparators | 2 comparators | 1 (4 inputs) | 1 (4 inputs) | 1 (4 inputs) |
| Lifecycle Status | NRND | Active | Active | NRND | NRND | NRND |
Bảo phân biệt quan trọng
- Faster 40 MHz clock speed grade vs most C62x siblings (vsPIC16C621A-40/P)
- EPROM OTP security for firmware protection (vsPIC16F88-I/P)
- Integrated analog comparator without ADC overhead (vsPIC16F1825-I/P)
Ghi chú thiết kế
Decouple VDD (pin 14) with a 100 nF ceramic capacitor placed within 5 mm of the pin, plus a 10 uF bulk capacitor on the supply rail. The PIC16C622A-40/P draws approximately 5-10 mA at 40 MHz with all I/O active; in sleep mode it drops below 1 uA when the Watchdog Timer is disabled. Ensure the bulk capacitor handles the in-rush current when MCLR is released.
For through-hole PDIP-18, route the oscillator traces (OSC1/OSC2) on the top layer, keep them short (<10 mm), and surround them with a ground pour to minimize EMI pickup. Place the MCLR pull-up resistor (typically 10 kOhm) close to pin 4. If using a crystal, place load capacitors (typically 15-33 pF) immediately at the oscillator pins, with the ground side returning to the same ground reference as VSS (pin 5).
The PIC16C622A-40/P is OTP (One-Time Programmable) in the plastic PDIP package - it CANNOT be re-programmed once written. Verify firmware thoroughly using the JW window-erasable ceramic package variant during development, then commit to OTP plastic for production. Do not exceed the absolute maximum VDD of 7.0 V, and observe the MCLR/VPP voltage limits during in-circuit programming (typically 13 V for high-voltage programming).
Thông tin tuân thủ
RoHS/REACH status unknown - EPROM PDIP parts are often non-RoHS due to the lead in the through-hole pin finish. AEC-Q100 not qualified (commercial 0C to +70C grade only); choose industrial or PIC16F automotive equivalents for vehicle applications.
