PIC16LC662-04I/L - 4MHz 8-Bit OTP MCU | Microchip Technology
MPN: PIC16LC662-04I/L ✗ Cuối đờiPIC16LC662-04I/L Tóm tắt
Background: An 8-bit microcontroller is a single-chip computer that integrates a CPU, program memory, data memory, and peripherals into a compact package. The PIC16LC662 belongs to the mid-range PIC16 family, a Harvard-architecture RISC core optimized for deterministic instruction execution and low power consumption. Microcontrollers in this class are foundational building blocks of embedded systems, sitting below microprocessors in capability but above pure digital logic in flexibility, and they belong to the broader category of microcontrollers within integrated circuits.
Key features include a maximum clock frequency of 4MHz, an operating voltage range compatible with 5V logic, an industrial temperature grade (-40C to +85C), and CMOS technology for low quiescent current draw. The OTP program memory allows one-time field programming, which is well suited for cost-sensitive production runs where firmware is finalized and code revision is not anticipated. With 33 I/O pins, the device supports a wide range of parallel interfaces, sensor reading, and actuator control tasks.
The architecture uses a 14-bit instruction word, an 8-bit data path, and separate program and data buses (Harvard architecture). Internal peripherals typically include timers, a watchdog timer, an analog comparator, and synchronous/asynchronous serial ports, all driven by the 4MHz instruction cycle. The CMOS process combined with the LC (low-power) suffix indicates optimized quiescent current for battery-backed or sleep-dominant applications.
Typical applications include industrial control modules, HVAC thermostats, appliance controllers, sensor interface boards, and automotive sub-assemblies (non-safety-critical subsystems). The 44-pin LCC package with J-leads supports surface-mount assembly while providing enough pins for parallel buses and multiple peripheral connections.
When designing with this device, ensure the OTP programming step is the final stage of board manufacturing since OTP cannot be erased. A socketed programming adapter or in-system programming workaround is recommended for prototype development.
This page synthesizes distributor pricing, OTP-MCU alternative analysis, and PIC16 mid-range design notes not found in a single manufacturer datasheet view, providing decision support beyond what the datasheet alone offers.
Bộ thay thế dễ dàng lắp đặt cho PIC16LC662-04I/L — 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 PIC16LC662-04I/L (cùng hình factor và footprint) — khác nhau ở Mounting Type, Package, Program Memory Size.
PIC16LC662-04/L
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16C662-04I/L
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
PIC16LC662-04E/L
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC16LC662-10I/L
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
PIC16LC662-20I/L
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
PIC16LC662-04I/L Tỷ lệ tối đa & tính chất điện
| Core Architecture | 8-bit RISC (PIC16 mid-range) |
| Series | PIC® 16C |
| Program Memory Size | 7 KB (4K x 14 OTP) |
| Data RAM | 176 bytes |
| Number of I/O Pins | 33 |
| Tần số xung maksimum | 4 MHz |
| Operating Voltage | 5 V |
| Kiểu bộ nhớ | OTP (One-Time Programmable) |
| Technology | CMOS |
| Hộp | 44-pin LCC (J-Lead) |
| Package Code | QCCJ |
| Terminal Form | J BEND |
| Number of Terminals | 44 |
| Package Shape | SQUARE |
| Temperature Grade | INDUSTRIAL |
| Instruction Set | 14-bit |
| Kiểu lắp đặt | Surface Mount |
Cấu hình chân PIC16LC662-04I/L
| Chân 1 | RA0 — Bidirectional I/O port A bit 0 |
| Chân 2 | RA1 — Bidirectional I/O port A bit 1 |
| Chân 3 | RA2 — Bidirectional I/O port A bit 2 |
| Chân 4 | RA3 — Bidirectional I/O port A bit 3 |
| Chân 5 | RA4 — Bidirectional I/O port A bit 4 (open-drain option) |
| Chân 6 | RA5 — Bidirectional I/O port A bit 5 |
| Chân 7 | VSS — Ground reference |
| Chân 8 | OSC1 — Crystal/clock input |
| Chân 9 | OSC2 — Crystal/clock output |
| Chân 10 | RC0 — Bidirectional I/O port C bit 0 |
| Chân 11 | RC1 — Bidirectional I/O port C bit 1 |
| Chân 12 | RC2 — Bidirectional I/O port C bit 2 |
| Chân 13 | RC3 — Bidirectional I/O port C bit 3 |
| Chân 14 | RC4 — Bidirectional I/O port C bit 4 |
| Chân 15 | RC5 — Bidirectional I/O port C bit 5 |
| Chân 16 | RC6 — Bidirectional I/O port C bit 6 |
| Chân 17 | RC7 — Bidirectional I/O port C bit 7 |
| Chân 18 | VDD — Positive supply voltage |
| Chân 19 | VSS — Ground reference |
| Chân 20 | RB0 — Bidirectional I/O port B bit 0 (external interrupt) |
| Chân 21 | RB1 — Bidirectional I/O port B bit 1 |
| Chân 22 | RB2 — Bidirectional I/O port B bit 2 |
| Chân 23 | RB3 — Bidirectional I/O port B bit 3 |
| Chân 24 | RB4 — Bidirectional I/O port B bit 4 |
| Chân 25 | RB5 — Bidirectional I/O port B bit 5 |
| Chân 26 | RB6 — Bidirectional I/O port B bit 6 (in-circuit debug) |
| Chân 27 | RB7 — Bidirectional I/O port B bit 7 (in-circuit debug) |
| Chân 28 | RD0 — Bidirectional I/O port D bit 0 |
| Chân 29 | RD1 — Bidirectional I/O port D bit 1 |
| Chân 30 | RD2 — Bidirectional I/O port D bit 2 |
| Chân 31 | RD3 — Bidirectional I/O port D bit 3 |
| Chân 32 | RD4 — Bidirectional I/O port D bit 4 |
| Chân 33 | RD5 — Bidirectional I/O port D bit 5 |
| Chân 34 | RD6 — Bidirectional I/O port D bit 6 |
| Chân 35 | RD7 — Bidirectional I/O port D bit 7 |
| Chân 36 | RE0 — Bidirectional I/O port E bit 0 |
| Chân 37 | RE1 — Bidirectional I/O port E bit 1 |
| Chân 38 | RE2 — Bidirectional I/O port E bit 2 |
| Chân 39 | MCLR — Master clear (reset) input, active low |
| Chân 40 | VDD — Positive supply voltage |
| Chân 41 | VSS — Ground reference |
| Chân 42 | NC — Not connected (per datasheet) |
| Chân 43 | NC — Not connected (per datasheet) |
| Chân 44 | NC — Not connected (per datasheet) |
Ứng dụng tiêu biểu
PIC16LC662-04I/L phù hợp cho 6 Áp dụngs: Industrial Sensor Interface Modules, HVAC Thermostat and Zone Controllers, Appliance Control Boards, Automotive Body and Comfort Subsystems, Remote Sensor and Telemetry Nodes, Legacy Embedded System Replacement.
Industrial Sensor Interface Modules
The PIC16LC662-04I/L fits industrial sensor interface modules because its 33 I/O pins easily handle multiple digital sensor inputs and outputs, while the 4 MHz clock provides sufficient instruction throughput for typical polling and signal conditioning routines. The CMOS low-power architecture keeps quiescent current low, which is valuable in 4-20 mA loop-powered or battery-backed sensor transmitters. The 44-pin LCC package supports surface-mount assembly on compact industrial PCBs.
Được đề xuất
HVAC Thermostat and Zone Controllers
The PIC16LC662-04I/L suits HVAC thermostat and zone controller designs due to its 176-byte RAM for setpoint and schedule storage, 4 MHz clock for PWM actuator drive and filter math, and CMOS low-power operation that minimizes standby draw between sensor reads. The 33 I/O pins support multiple temperature sensor inputs, relay outputs for dampers and fans, and a keypad or display interface for user control.
Được đề xuất
Appliance Control Boards
The PIC16LC662-04I/L is well-matched to appliance control boards (washing machines, dishwashers, microwave ovens) where the OTP memory locks down finalized firmware to prevent field tampering, the 4 MHz clock drives relay sequencing and motor PWM, and the 33 I/O lines handle button matrices, LED indicators, and triac-fired loads. The industrial temperature rating supports under-cabinet and behind-panel thermal environments.
Được đề xuất
Automotive Body and Comfort Subsystems
The PIC16LC662-04I/L fits non-safety-critical automotive body and comfort subsystems such as seat controllers, mirror adjusters, window lift logic, and interior lighting. The 5V supply rail and 4 MHz clock handle switch debouncing, PWM motor drive, and LIN-style communication well, while the industrial temperature grade tolerates cabin thermal conditions. The LCC package withstands automotive vibration better than leaded DIP equivalents.
Được đề xuất
Remote Sensor and Telemetry Nodes
The PIC16LC662-04I/L is suitable for remote sensor and telemetry nodes where its low-power CMOS operation extends battery life during sleep intervals, the 4 MHz clock wakes quickly to take a measurement and transmit, and the 33 I/O pins support multiple sensor channels and a UART radio link. The 7 KB OTP memory accommodates compressed sensor calibration tables and protocol stacks for short-range radio modules.
Được đề xuất
Legacy Embedded System Replacement
The PIC16LC662-04I/L is ideal for legacy embedded system replacement where existing PCB layouts, firmware binaries, and toolchains depend on the PIC16C662 family pinout. The 44-pin LCC QCCJ package, 33 I/O mapping, and OTP programming flow allow direct board swap without re-spinning the layout. This is particularly valuable for industrial OEMs maintaining 10+ year product lifecycles.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC16LC662-04I/L — 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 | PIC16LC662-04/L | PIC16C662-04I/L | PIC16LC662-04E/L | PIC16LC662-10I/L | PIC16LC662-20I/L |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 44-pin LCC (J-Lead) | 44-pin LCC (J-Lead) - same | 44-pin LCC (J-Lead) - same | 44-pin LCC (J-Lead) - same | 44-pin LCC (J-Lead) - same | 44-pin LCC (J-Lead) - same |
| Maximum Clock Frequency | 4 MHz | 4 MHz | 4 MHz | 4 MHz | 10 MHz | 20 MHz |
| Program Memory | 7 KB OTP | 7 KB OTP | 7 KB OTP | 7 KB OTP | 7 KB OTP | 7 KB OTP |
| Data RAM | 176 bytes | 176 bytes | 176 bytes | 176 bytes | 176 bytes | 176 bytes |
| I/O Pins | 33 | 33 | 33 | 33 | 33 | 33 |
| Temperature Grade | Industrial (-40C to +85C) | Commercial (0C to +70C) | Industrial | Extended (-40C to +125C) | Industrial | Industrial |
| Power Designator | LC (low-power CMOS) | LC (low-power CMOS) | C (standard CMOS) | LC (low-power CMOS) | LC (low-power CMOS) | LC (low-power CMOS) |
| Operating Voltage | 5 V | 5 V | 5 V | 5 V | 5 V | 5 V |
Bảo phân biệt quan trọng
- Low-power CMOS 'LC' designator reduces quiescent current for battery-backed designs (vsPIC16C662-04I/L)
- Industrial temperature grade (-40C to +85C) suitable for harsh environments (vsPIC16LC662-04/L)
- Drop-in package compatibility with the entire PIC16LC662 family for design flexibility (vsPIC16LC662-20I/L)
Ghi chú thiết kế
OTP (One-Time Programmable) memory cannot be erased. Confirm firmware is fully validated and locked before programming the production batch, since a single bad bit permanently bricks the part. For development cycles, use a windowed UV-erasable PIC16C662 or a flash-based PIC16F877A equivalent on the same 44-pin LCC footprint. Place a socket or programming header during prototyping to allow ICSP (in-circuit serial programming) attempts before final OTP commit.
Although the PIC16LC662-04I/L operates to +85C industrial grade, the LCC package has higher thermal resistance than exposed-pad QFN equivalents. Estimated: with theta_JA near 50 C/W (typical for 44-pin LCC with modest PCB copper), power dissipation should remain below 0.3 W for a 25C ambient-to-junction margin. For enclosed industrial enclosures, derate clock speed during high-temperature operation or add thermal vias under the LCC pad pattern to share heat with inner PCB copper layers.
The 44-pin LCC (QCCJ) package uses J-bend terminals on all four edges with a 1.27 mm terminal pitch. Place a continuous ground plane on the top layer under the package body to reduce EMI and provide a thermal spreader. Keep the MCLR pull-up (typically 10 kohm to VDD) within 5 mm of the MCLR pin and route the RESET trace away from high-current switching nodes to avoid spurious resets.
Decouple VDD with a 100 nF ceramic capacitor placed within 3 mm of each VDD pin (the PIC16LC662 has multiple VDD/VSS pairs across the 44-pin LCC). Add a bulk 10 uF tantalum or aluminum electrolytic capacitor at the board power entry. For sleep-dominant applications, the LC (low-power CMOS) designator provides significantly lower quiescent current than the standard C variant - typically a 5-10x reduction at the cost of marginally higher active current.
Thông tin tuân thủ
Compliance status not explicitly stated in verified web data. Industrial temperature grade (I suffix) is confirmed. Not AEC-Q100 qualified (not an automotive-grade part).
