PIC16LC622T-04/SO - 3.5KB OTP PIC MCU, 4MHz, SOIC-18 | Microchip
MPN: PIC16LC622T-04/SO ✓ Hoạt độngPIC16LC622T-04/SO Tóm tắt
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory, working RAM, and peripheral I/O on one die. The PIC16C family uses a RISC Harvard architecture with 12-bit wide instructions and an 8-bit data path, supported by seven or eight special-function hardware registers and a two-level deep hardware stack. PIC16C sits in the product hierarchy: 8-bit MCU -> PIC microcontroller -> RISC embedded controller -> semiconductor. This sub-family is the "LC" low-power variant of the PIC16C62x line.
Key features of the PIC16LC622T-04/SO include 4 MHz maximum clock speed, OTP (one-time programmable) program memory, low-voltage 2.5V to 6.25V operation, 13 bidirectional I/O lines, watchdog timer, power-on reset, and brown-out detection circuitry. The "04" suffix denotes the 4 MHz speed grade; the "T" suffix denotes tape and reel packaging. The wide-body SO-18 (SOIC-18, 300 mil) surface-mount package provides mechanical compatibility with industry-standard hand-soldering and reflow profiles.
Typical applications include consumer appliance controllers, low-end remote keyless entry transmitters, simple motor and relay drivers, LED lighting controllers, and battery-powered sensor interfaces. The low-voltage CMOS core makes the part appropriate for handheld and portable products where quiescent current and supply flexibility matter.
When designing with this part, remember OTP memory is one-time programmable; firmware bugs require board-level rework rather than a re-flash. Use the in-circuit serial programming (ICSP) interface for prototype bring-up and the device configuration bits to select oscillator mode, watchdog state, and code-protect options.
This page combines Microchip datasheet specifications, distributor stock and pricing, pin-compatible PIC16 family drop-in alternatives, and practical design notes - giving engineers more decision context than the manufacturer datasheet alone provides.
Bộ thay thế dễ dàng lắp đặt cho PIC16LC622T-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 PIC16LC622T-04/SO (cùng hình factor và footprint) — khác nhau ở Package, Core Architecture, Program Memory Size, Instruction Count, Maximum CPU Speed.
PIC16C622T-04/SO
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16LC622-04/SO
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC16LC622T-04E/SO
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC16LC621T-04/SO
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16F716-I/SO
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16LC622T-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) |
| Program Memory Type | OTP |
| RAM Size | 128 bytes |
| Maximum CPU Speed | 4 MHz |
| Supply Voltage Range | 2.5 V to 6.25 V |
| Number of I/O Pins | 13 |
| Number of I/O Ports | 12 |
| Hộp | SOIC-18 (SO-18), 0.300 inch, 7.50 mm width |
| Kiểu lắp đặt | Surface Mount |
| Peripherals | Watchdog Timer, Power-On Reset, Brown-Out Detect |
| Stack Depth | 2 levels (hardware) |
| Instruction Set | 12-bit wide instructions, 8-bit data path |
| Addressing Modes | Direct, Indirect, Relative |
| Special Function Registers | 7 or 8 hardware registers |
| Trạng thái RoHS | Compliant |
Cấu hình chân PIC16LC622T-04/SO
| Chân 1 | RA2 — Bidirectional I/O port A bit 2 |
| Chân 2 | RA3 — Bidirectional I/O port A bit 3 |
| Chân 3 | RA4 — Bidirectional I/O port A bit 4 / T0CKI |
| Chân 4 | MCLR — Master Clear (reset) input, active low |
| Chân 5 | VSS — Ground reference |
| Chân 6 | RB0 — Bidirectional I/O port B bit 0 / INT |
| 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 |
| Chân 11 | RB5 — Bidirectional I/O port B bit 5 |
| Chân 12 | RB6 — Bidirectional I/O port B bit 6 / PGC (ICSP clock) |
| Chân 13 | RB7 — Bidirectional I/O port B bit 7 / PGD (ICSP data) |
| Chân 14 | VSS — Ground reference |
| Chân 15 | OSC2 — Oscillator output / CLKOUT |
| Chân 16 | OSC1 — Oscillator input / CLKIN |
| Chân 17 | RA0 — Bidirectional I/O port A bit 0 |
| Chân 18 | RA1 — Bidirectional I/O port A bit 1 |
Ứng dụng tiêu biểu
PIC16LC622T-04/SO phù hợp cho 6 Áp dụngs: Consumer Appliance Controllers, Remote Keyless Entry (RKE) Transmitters, Battery-Powered Sensor Interfaces, LED Lighting Pattern Controllers, Simple Relay and Solenoid Drivers, Industrial Control Logic Replacement.
Consumer Appliance Controllers
The PIC16LC622T-04/SO's 4 MHz PIC16C core, 13 I/O pins, and 2.5-6.25 V supply range fit low-cost consumer appliances such as coffee makers, toasters, and countertop kitchen devices. The 3.5 KB OTP memory holds state-machine control firmware, while the integrated watchdog timer and brown-out detect protect against firmware lockup and unstable mains-derived DC rails. Unlike modern Flash MCUs the OTP variant prevents unauthorized firmware read-back, a benefit for some sealed-product designs; engineer should budget for OTP tooling during firmware bring-up.
Được đề xuất
Remote Keyless Entry (RKE) Transmitters
The PIC16LC622T-04/SO fits RKE keyfob transmitters because its low-voltage 2.5 V minimum operation aligns with single CR2032 coin-cell battery use, the 4 MHz PIC core executes button-debounce and rolling-code logic with low quiescent draw, and the 128 B RAM buffers rolling-code counters. Pin 13 I/O drives an external SAW or OOK transmitter IC. Its OTP memory protects rolling-code secrets from external read, a security advantage over Flash parts unless locked. Estimated battery life: 2-3 years at 10 transmissions/day.
Được đề xuất
Battery-Powered Sensor Interfaces
The PIC16LC622T-04/SO suits battery-powered sensor interface nodes because the 2.5 V minimum VDD permits direct Li-coin-cell operation and the LC process node offers low sleep current relative to the non-LC PIC16C622. The 4 MHz instruction clock drives GPIO toggling and time-multiplexed sensor reads, while 128 B RAM buffers instantaneous sample data. Brown-out detect prevents sensor corruption at low battery. For designs needing analog input, a Flash PIC16F sibling with ADC is preferred.
Được đề xuất
LED Lighting Pattern Controllers
The PIC16LC622T-04/SO drives low-channel-count decorative LED controllers because its 13 I/O pins can PWM-drive up to 13 LEDs or a multiplexed RGB matrix via external driver transistors. The 4 MHz instruction rate supports 8-bit PWM at a few hundred Hz refresh. Brown-out detect prevents inrush-induced flicker. Estimated: 13 channels x 20 mA per LED = 260 mA total, supplied by the MCU 5 V rail through discrete transistors; add proper base resistors.
Được đề xuất
Simple Relay and Solenoid Drivers
The PIC16LC622T-04/SO drives relay and solenoid coils in industrial cabinets because its 13 I/O pins sink ULN2803 driver inputs directly, and the 4 MHz core handles timing patterns for pulse-relay and latching-solenoid sequences. The 2.5-6.25 V range supports 5 V and 3.3 V logic rails. OTP memory secures proprietary timing patterns. Each I/O typically sources/sinks 25 mA - sufficient for driver inputs; for higher current use external MOSFETs.
Được đề xuất
Industrial Control Logic Replacement
The PIC16LC622T-04/SO replaces legacy 8051 or discrete logic in industrial controllers because its 3.5 KB OTP holds scan-loop ladder-logic replacements, and the PIC16C62x family has decades of industrial qualification. The 2-level hardware stack limits nesting but suits simple cyclic tasks. With 13 I/O and a brown-out detect, it directly replaces a logic-board of TTL gates at lower cost. For factory-floor designs with -40 C to +85 C ambient, choose the PIC16LC622T-04E/SO extended-temperature grade.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC16LC622T-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 | PIC16C622T-04/SO | PIC16LC622-04/SO | PIC16LC622T-04E/SO | PIC16LC621T-04/SO | PIC16F716-I/SO |
|---|---|---|---|---|---|---|
| Package | SOIC-18 (SO-18), 7.50 mm | SOIC-18 (SO-18) - same | SOIC-18 (SO-18) - same | SOIC-18 (SO-18) - same | SOIC-18 (SO-18) - same | SOIC-18 (SO-18) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Memory | 3.5 KB OTP | 3.5 KB OTP | 3.5 KB OTP | 3.5 KB OTP | 1.75 KB OTP | 2 KB Flash |
| Max CPU Speed | 4 MHz | 4 MHz | 4 MHz | 4 MHz | 4 MHz | 20 MHz |
| Supply Voltage | 2.5 V to 6.25 V | 3.0 V to 6.0 V (non-LC) | 2.5 V to 6.25 V | 2.5 V to 6.25 V | 2.5 V to 6.25 V | 2.0 V to 5.5 V |
| RAM | 128 bytes | 128 bytes | 128 bytes | 128 bytes | 64 bytes | 128 bytes |
| I/O Pins | 13 | 13 | 13 | 13 | 13 | 13 |
| Memory Type | OTP | OTP | OTP | OTP | OTP | Flash (re-programmable) |
| Temperature Grade | 0 C to +70 C (commercial) | 0 C to +70 C | 0 C to +70 C | -40 C to +125 C (extended) | 0 C to +70 C | -40 C to +85 C (industrial) |
Bảo phân biệt quan trọng
- Low-voltage LC process node (vsPIC16C622T-04/SO)
- Field-reprogrammable Flash variant available (vsPIC16F716-I/SO)
- Lower-memory variant in same family (vsPIC16LC621T-04/SO)
Ghi chú thiết kế
The PIC16LC622T-04/SO supply range is 2.5 V to 6.25 V. Use a 100 nF decoupling capacitor as close as physically possible to the VDD pin (pin 14), with a bulk 10 uF tantalum or aluminum capacitor at the regulator output. Brown-out detect (BOD) is enabled via configuration register; enable BOD for any mains-rail-supplied design to prevent firmware corruption on power dip.
OTP memory is one-time programmable. Unlike Flash MCUs you cannot re-program PIC16LC622T-04/SO in-circuit - a firmware bug in the final code means scrapping the part. Plan an emulator (PIC16C622 JW UV-erasable windowed CERDIP, or a current PIC16F equivalent) for firmware development, then burn the production OTP quantity once firmware is verified. The two-level hardware stack also limits call depth - keep nested subroutines to one level.
Use the standard SOIC-18 land pattern with 1.27 mm pin pitch and 0.65 mm land width. Keep the SOIC body clear of tall components to allow hand-rework and inspection. The ICSP pins PGC (RB6) and PGD (RB7) are multiplexed with general-purpose I/O - leave them accessible on the PCB for in-circuit programming header.
Thông tin tuân thủ
RoHS and lead-free compliant per Microchip product page. PIC16LC622 family is not AEC-Q100 qualified; for automotive choose AEC-Q100 qualified PIC16Fxxx alternatives. Halogen-free status not explicitly stated in retrieved data.
