PIC16C622AT-04/SO - 8-Bit 4MHz OTP MCU 3.5KB 18-SOIC | Microchip
MPN: PIC16C622AT-04/SO ✓ Hoạt độngPIC16C622AT-04/SO Tóm tắt
A microcontroller (MCU) is a single-chip computer that combines a CPU, memory (program + data), and peripherals on one silicon die, intended to control electronic systems through firmware. The PIC16C622A belongs to the mid-range PICmicro taxonomy (8-bit MCU -> microcontroller -> embedded controller -> semiconductor) and historically served as the workhorse of industrial, appliance, and consumer control applications before Flash-based PIC16F parts replaced most OTP variants. The PIC16C622A also integrates a dual analog comparator module (the namesake feature of the '622 family), 8-bit timer/counter, watchdog timer, and a power-saving SLEEP mode.
Key features of the PIC16C622AT-04/SO include 25 mA source/sink per I/O, 4 MHz maximum oscillator frequency (4 MHz internal RC option not available on this part), 2.5V to 5.5V operating voltage, and the OTP program memory windowed on the 'A' die. Wide-voltage-range design supports both 3.3V and 5V rails, and is the reason this part continues to ship into industrial controllers and brown-good retrofit upgrade loops. The 18-SOIC (0.295-inch / 7.50mm width) package is the wide-body variant offering wider lead pitch for hand-soldering and through-hole-style process windows.
Typical applications include remote transmitters, security-system peripherals, appliance controllers, automotive subsystems (non-safety), and simple sensor signal conditioning. The 13 I/O, dual analog comparator, and 4 MHz CPU throughput provide enough headroom to replace discrete logic or 4-bit controllers while keeping BOM cost low. Designers frequently migrate from PIC16C620/PIC16C621 in the same family to PIC16C622 when they need more RAM and program memory.
When designing with this device, place a 0.1uF decoupling capacitor as close as possible to VDD (pin 14) and connect MCLR (pin 4) through a 10k pull-up resistor to VDD for normal operation. OTP memory can only be programmed once, so pre-production verification via PIC16C622A-04/SO (windowed) or PIC16C622A-04/JW (UV-erasable) prototypes is the standard development workflow.
Bộ thay thế dễ dàng lắp đặt cho PIC16C622AT-04/SO — 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 PIC16C622AT-04/SO (cùng hình factor và footprint) — khác nhau ở Package, Program Memory Size, Instruction Set, Core Architecture, Core Processor.
PIC16C622A-04/SO
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC16C622AT-04I/SO
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PIC16C622AT-04E/SO
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC16C621AT-04/SO
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC16C620AT-04/SO
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16F628A-I/SO
✅ Drop-In✗ Hết hàng
$2.32 / Đơn vị
Xem tài liệu →PIC16F627A-I/SO
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16C622AT-04/SO Tỷ lệ tối đa & tính chất điện
| Core Processor | PIC |
| Core Size | 8-Bit |
| Series | PIC16C |
| Program Memory Size | 3.5 KB (2K x 14) OTP |
| RAM Size | 128 x 8 bytes |
| Tần số xung maksimum | 4 MHz |
| Number of I/O | 13 |
| Operating Voltage | 2.5 V to 5.5 V |
| Hộp / Vỏ | 18-SOIC (0.295", 7.50 mm width) |
| Kiểu lắp đặt | Surface Mount |
| Program Memory Type | OTP (One-Time Programmable) EPROM |
| Nhiệt độ hoạt động | 0 C to +70 C |
| Peripherals | Brown-out Detect, Watchdog Timer, 2x Analog Comparator |
Cấu hình chân PIC16C622AT-04/SO
| Chân 1 | RA2 — Bidirectional I/O port A bit 2 / analog comparator input |
| Chân 2 | RA3 — Bidirectional I/O port A bit 3 / analog comparator input |
| Chân 3 | RA4/T0CKI — Bidirectional I/O port A bit 4 / Timer0 clock input (open-drain) |
| Chân 4 | MCLR — Master Clear (reset) input, active-low, requires external pull-up |
| Chân 5 | VSS — Ground reference |
| Chân 6 | RB0/INT — Bidirectional I/O port B bit 0 / external interrupt input |
| Chân 7 | RB1 — Bidirectional I/O port B bit 1 |
| Chân 8 | RB2 — Bidirectional I/O port B bit 2 |
| Chân 9 | RB3 — Bidirectional I/O port B bit 3 |
| Chân 10 | RB4 — Bidirectional I/O port B bit 4 (interrupt-on-change) |
| Chân 11 | RB5 — Bidirectional I/O port B bit 5 (interrupt-on-change) |
| Chân 12 | RB7 — Bidirectional I/O port B bit 7 (ICSP data) |
| Chân 13 | RB6 — Bidirectional I/O port B bit 6 (ICSP clock) |
| Chân 14 | VDD — Positive supply voltage (+2.5V to +5.5V) |
| Chân 15 | OSC2/CLKOUT — Oscillator crystal output / clock output (Fosc/4) |
| Chân 16 | OSC1/CLKIN — Oscillator crystal input / external clock input |
| Chân 17 | RA0 — Bidirectional I/O port A bit 0 |
| Chân 18 | RA1 — Bidirectional I/O port A bit 1 |
Ứng dụng tiêu biểu
PIC16C622AT-04/SO phù hợp cho 7 Áp dụngs: IR Remote Control Transmitter, Appliance Controller Board, Security System Sensor Interface, Automotive Accessory Controller (Non-Safety), Industrial Sensor Signal Conditioner, Consumer Toy and Hobby Electronics, Smart Meter and Energy Monitor Peripherals.
IR Remote Control Transmitter
The PIC16C622AT-04/SO's 3.5KB OTP program memory, 4 MHz throughput, and 13 digital I/O pins make it a strong choice for handheld IR remote transmitters. The 2.5V-5.5V operating voltage allows direct battery operation from two alkaline cells (3V nominal) without a boost regulator, extending battery life. The internal SLEEP mode draws less than 1uA, and the 4 MHz execution speed easily handles 38 kHz / 40 kHz / 56 kHz carrier generation with software PWM. Recommended products include the Microchip PIC16C621A family for cost-down derivatives.
Được đề xuất
Appliance Controller Board
The PIC16C622AT-04/SO is widely used in white-goods and appliance control boards (washing machines, microwave ovens, dishwashers) where its 13 I/O pins drive relays, triacs, and 7-segment LED displays while the dual analog comparator monitors temperature sensors and water-level probes. The 4 MHz CPU executes control loops at 1 ms resolution, easily managing PID-style temperature regulation, and the OTP memory prevents firmware tampering in production. The 0C-70C commercial temperature range covers most indoor appliance environments.
Được đề xuất
Security System Sensor Interface
The PIC16C622AT-04/SO is well-suited for PIR motion sensor interfaces, glass-break detectors, and door/window contact modules used in residential and commercial security systems. Its dual analog comparator detects low-level analog signals from PIR sensors and thermopile elements, while 13 I/O drive status LEDs, piezo buzzers, and reed-switch inputs. The 128-byte RAM supports rolling-code transmission buffers, and the OTP memory prevents code extraction from field-deployed security hardware - reducing reverse-engineering risk.
Được đề xuất
Automotive Accessory Controller (Non-Safety)
Non-safety automotive accessories such as ambient lighting controllers, seat-heater switch panels, and aftermarket alarm systems frequently use PIC16C622AT-04/SO. The 18-SOIC wide-body package handles automotive thermal cycling, while the 25 mA I/O source/sink directly drives small relays and LED indicators without buffer transistors. For under-hood or extreme-temperature applications, designers migrate to the PIC16C622AT-04I/SO industrial-grade (-40C to +85C) variant for guaranteed cold-start behavior.
Được đề xuất
Industrial Sensor Signal Conditioner
The PIC16C622AT-04/SO conditions analog signals from industrial sensors (load cells, thermistors, photodiodes) by using the dual analog comparator for threshold detection and software-implemented sigma-delta conversion via the comparator and timer0. The 4 MHz throughput allows oversampling at 1 kHz while still servicing serial communication to a host controller. The OTP memory locks the calibration coefficients in production, preventing field tampering and reducing calibration drift. Wide 2.5V-5.5V supply tolerates industrial 24V/5V regulated rails.
Được đề xuất
Consumer Toy and Hobby Electronics
The PIC16C622AT-04/SO drives hobby robotics, RC receivers, model-train controllers, and educational electronics kits where its low cost (sub-$1.20 at 100 pieces) and simple 35-instruction RISC architecture accelerate learning. The 18-SOIC wide-body package is hand-solderable, making it friendly to hobbyist assembly without specialized tools. The PICkit 3 programmer supports in-circuit serial programming (ICSP) through the RB6/RB7 pins, allowing beginners to prototype without removing the chip. The PIC16C621A-04/SO is the recommended cost-down derivative for toy applications requiring <1KB code.
Được đề xuất
Smart Meter and Energy Monitor Peripherals
The PIC16C622AT-04/SO is deployed as a peripheral controller in single-phase smart electricity meters, gas-meter AMR modules, and water-meter pulse counters. Its dual analog comparator monitors the metrology front-end for tamper detection (magnetic interference, reversed polarity), while the 13 I/O drive LCD segment controllers or LED pulse indicators. The OTP memory prevents code modification by end users, supporting utility-grade security requirements. The 2.5V-5.5V supply range matches single-cell Li-coin-battery backup rails.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC16C622AT-04/SO — 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 | PIC16C622A-04/SO | PIC16C622AT-04I/SO | PIC16C622AT-04E/SO | PIC16C621AT-04/SO | PIC16C620AT-04/SO | PIC16F628A-I/SO | PIC16F627A-I/SO |
|---|---|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 18-SOIC (0.295") | 18-SOIC (0.295") | 18-SOIC (0.295") | 18-SOIC (0.295") | 18-SOIC (0.295") | 18-SOIC (0.295") | 18-SOIC (0.295") | 18-SOIC (0.295") |
| Program Memory | 3.5KB (2K x 14) OTP | 3.5KB OTP (same) | 3.5KB OTP (same) | 3.5KB OTP (same) | 1KB OTP | 0.5KB OTP | 3.5KB Flash | 1.75KB Flash |
| RAM | 128 bytes | 128 bytes | 128 bytes | 128 bytes | 80 bytes | 80 bytes | 224 bytes | 128 bytes |
| Max Clock Speed | 4 MHz | 4 MHz | 4 MHz | 4 MHz | 4 MHz | 4 MHz | 20 MHz | 20 MHz |
| Temperature Range | 0C to +70C (Commercial) | 0C to +70C | -40C to +85C (Industrial) | -40C to +125C (Extended) | 0C to +70C | 0C to +70C | -40C to +85C | -40C to +85C |
| Memory Type | OTP EPROM | OTP EPROM | OTP EPROM | OTP EPROM | OTP EPROM | OTP EPROM | Flash (reprogrammable) | Flash (reprogrammable) |
| Analog Comparators | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 |
Bảo phân biệt quan trọng
- Higher program memory than PIC16C621A within the same family (vsPIC16C621AT-04/SO)
- Migration-friendly to Flash-based successor PIC16F628A (vsPIC16F628A-I/SO)
- Lower cost than PIC16F628A Flash variant (vsPIC16F628A-I/SO)
Ghi chú thiết kế
Place a 0.1uF ceramic decoupling capacitor as close as possible to the VDD pin (pin 14), with the capacitor ground lead returning directly to the VSS pin (pin 5) via a wide PCB trace. For designs with noisy digital loads or relay switching near the MCU, add a 10uF bulk tantalum or aluminum electrolytic capacitor on the VDD rail within 25 mm of the IC. The PIC16C622AT-04/SO draws approximately 2-5 mA active at 4 MHz / 5V and <1uA in SLEEP mode.
Use the 18-SOIC wide-body (7.50 mm width) footprint with 1.27 mm pitch, providing 0.4 mm lead width - large enough for hand-soldering and for wave-solder profiles that comply with lead-free reflow at 260C peak. Keep the crystal or resonator traces (OSC1/OSC2, pins 15-16) short and surrounded by a ground guard ring to minimize EMI pickup. Route MCLR (pin 4) trace away from RB6/RB7 ICSP lines to prevent reset glitches during in-circuit programming.
Do not assume OTP parts can be reprogrammed: once the PIC16C622AT-04/SO's program memory is written, the part cannot be erased (OTP = one-time programmable). For development, use the windowed PIC16C622A-04/JW (ceramic DIP, UV-erasable) or the PIC16F628A Flash equivalent. Also verify the CONFIG word (oscillator selection, watchdog enable, code protection) before bulk programming - incorrect CONFIG settings can brick the entire production batch.
Estimated: at 4 MHz / 5V with all 13 I/O sourcing 25 mA, worst-case power dissipation is approximately 5V x 5 mA active + 13 x 25 mA x 0.4V drop = ~155 mW. The 18-SOIC package has a theta_JA of approximately 75 C/W (estimated from package geometry, verify with Microchip package thermal data), giving junction-to-ambient rise of ~12C above ambient at full load. No heatsink required, but ensure adequate PCB copper area for heat spreading.
Thông tin tuân thủ
RoHS/REACH/lead-free/halogen-free status for PIC16C622AT-04/SO requires confirmation against current Microchip material declaration sheets - the 18-SOIC family was originally released in leaded and lead-free variants, both of which remain orderable. AEC-Q100 not applicable to non-automotive-grade commercial parts (use PIC16C622AT-04I/SO for industrial environments). Microchip publishes Conflict Minerals Reporting Template (CMRT) and is DRC-compliant.