PIC16LC782T-I/SO - 8-Bit 20MHz 3.5KB OTP MCU | Microchip
MPN: PIC16LC782T-I/SO ✓ فعالPIC16LC782T-I/SO نمای کلی
A microcontroller (MCU) is a single-chip computer that integrates a CPU, RAM, non-volatile program memory, and peripherals such as ADC, DAC, timers, and communication interfaces into one package. PIC16 devices sit at the low pin-count, low-power end of Microchip's PIC architecture hierarchy (PIC10/16 -> mid-range 8-bit PIC -> 8-bit MCU -> microcontroller -> semiconductor). The PIC16LC782 specifically targets analog-rich mixed-signal designs by integrating both an 8-bit Analog-to-Digital Converter (ADC) with up to 8 input channels and an 8-bit Digital-to-Analog Converter (DAC) with one output channel on-chip.
Key features include 20MHz CPU clock, 16 digital I/O lines, an integrated 8-channel 8-bit ADC, an 8-bit DAC with output buffer, dual analog comparators, a 16-bit timer/counter with capture/compare/PWM, a USART/SCI module, and an internal bandgap voltage reference. The 'LC' prefix designates a low-power CMOS variant operating over 2.5V to 5.5V, while the 'T' suffix denotes Tape & Reel packaging. The OTP program memory allows one-time field programming via standard PIC programmers, with code retention rated for typical industrial lifetimes.
Architecturally, the device uses a 14-bit instruction word RISC core with a two-stage pipeline, an accumulator-based ALU, and Harvard-style separate program and data buses. The integrated analog peripherals are designed for closed-loop control loops where the ADC samples a sensor, a control algorithm runs on the CPU, and the DAC outputs an analog control voltage - eliminating the need for a separate analog front-end IC.
Typical applications include SMPS primary-side control (where the on-chip DAC programs the reference), closed-loop fan/lighting control, sensor conditioning front-ends, small consumer appliances, and any cost-sensitive embedded design needing both digital logic and analog trim/servo control. The 20-pin SOIC footprint is the most common PIC16 footprint, simplifying hand prototyping and breadboard-friendly adapter boards.
When designing with this part, note that OTP memory cannot be re-programmed in-circuit - choose the flash-based PIC16F or PIC16LF equivalent family for field-updatable firmware. The LC variant runs 3.3V at 20MHz; confirm headroom at 5V with the speed/frequency characteristic of the specific OTP bit cell generation.
This page synthesizes distributor pricing, drop-in OTP and flash alternatives, and practical analog-mixed-signal design notes not found in the manufacturer datasheet.
جایگزین‌های drop-in برای PIC16LC782T-I/SO — همان پکیج، سازگار پین‌به‌پین. قطعات با پکیج متفاوت که نیاز به تغییر PCB دارند مستثنی هستند.
گونه‌ها در این سری
مدل‌های هم‌سری که جایگزین مستقیم هستند برای PIC16LC782T-I/SO (همان فرم‌فاکتور و فوت‌پرینت) — متفاوت در ADC, Package, Operating Temperature, Program Memory Type, Timers.
PIC16LC782-I/SO
✅ جایگزین مستقیم📋 جایگزین مرجع (خارج از کاتالوگ)
PIC16LC781-I/SO
✅ جایگزین مستقیمبرای قیمت تماس بگیرید
مشاهده دیتاشیت ←PIC16LC717-I/SO
✅ جایگزین مستقیمبرای قیمت تماس بگیرید
مشاهده دیتاشیت ←PIC16LC773-I/SO
✅ جایگزین مستقیمبرای قیمت تماس بگیرید
مشاهده دیتاشیت ←PIC16LC717T-I/SO
✅ جایگزین مستقیمبرای قیمت تماس بگیرید
مشاهده دیتاشیت ←PIC16LC770-E/SO
✅ جایگزین مستقیمبرای قیمت تماس بگیرید
مشاهده دیتاشیت ←PIC16LC782T-I/SO حداکثر مقادیر مجاز و مشخصات الکتریکی
| Manufacturer | Microchip Technology |
| Series | PIC 16C |
| Core | 8-bit PIC RISC |
| Core Size | 8-bit |
| CPU Speed | 20 MHz |
| Program Memory | 3.5 KB (2K x 14) OTP |
| Data RAM | 128 x 8 bytes |
| I/O Pins | 16 |
| ADC | 8-bit, 8 channels |
| DAC | 8-bit, 1 channel |
| بسته‌بندی | 20-SOIC (0.295, 7.50mm width) |
| نوع نصب | Surface Mount |
| دمای کاری | -40C to +85C (Industrial) |
| ولتاژ تغذیه | 2.5V to 5.5V (LC low-power variant) |
| Packaging | Tape & Reel (TR) |
| Moisture Sensitivity Level | 1 (Unlimited) |
| Time @ Peak Reflow | 40 s max |
پیکربندی پین PIC16LC782T-I/SO
| پین 1 | RA2/AN2 — GPIO / Analog input channel 2 |
| پین 2 | RA3/AN3 — GPIO / Analog input channel 3 |
| پین 3 | RA4/AN4 — GPIO / Analog input channel 4 |
| پین 4 | RA5/AN5 — GPIO / Analog input channel 5 |
| پین 5 | VDD — Positive supply voltage (2.5V to 5.5V) |
| پین 6 | VSS — Ground reference |
| پین 7 | OSC1 — Oscillator input / external clock input |
| پین 8 | OSC2 — Oscillator output / clock out |
| پین 9 | RC0 — GPIO / timer I/O |
| پین 10 | RC1 — GPIO / timer I/O |
| پین 11 | RC2 — GPIO / timer I/O |
| پین 12 | RC3 — GPIO / timer I/O |
| پین 13 | RC4 — GPIO / USART I/O |
| پین 14 | RC5 — GPIO / USART I/O |
| پین 15 | RC6 — GPIO / USART TX / serial clock |
| پین 16 | RC7 — GPIO / USART RX / serial data |
| پین 17 | RB0/INT — GPIO / external interrupt input |
| پین 18 | RB1 — GPIO |
| پین 19 | RB2 — GPIO |
| پین 20 | MCLR/VPP — Master clear reset (active low) / programming voltage input |
کاربردهای معمول
PIC16LC782T-I/SO مناسب است برای 6 کاربردs: SMPS Primary-Side Control, Closed-Loop Fan / Lighting Control, Sensor Conditioning Front-End, Small Consumer Appliance Control, Battery-Powered Analog Trim & Calibration, Automotive Body Electronics (non-safety).
SMPS Primary-Side Control
The PIC16LC782T-I/SO is purpose-built for switch-mode power supply primary-side control, where its integrated 8-bit DAC programs the current/voltage reference and the on-chip 8-bit ADC samples the feedback loop at up to 20MHz CPU bandwidth. The internal bandgap reference and dual analog comparators enable peak current mode control topologies in isolated and non-isolated flyback converters.
پیشنهادی
Closed-Loop Fan / Lighting Control
With 16 GPIO pins, an 8-bit DAC output, and 8-channel ADC inputs, the PIC16LC782T-I/SO drives closed-loop fan RPM and LED lighting control with on-chip PID computation and analog PWM generation. The 2.5V to 5.5V supply range supports direct connection to 3.3V or 5V fan tachometers and LED driver feedback paths without level shifters.
پیشنهادی
Sensor Conditioning Front-End
The PIC16LC782T-I/SO acts as a digital sensor conditioner, sampling up to 8 analog sensor channels via the 8-bit ADC, applying linearization or compensation in firmware, and re-driving a corrected analog output through the on-chip 8-bit DAC. Industrial -40C to +85C rating and 20MHz CPU make it suitable for factory-floor sensor modules and HVAC transducers.
پیشنهادی
Small Consumer Appliance Control
Consumer appliances such as coffee makers, blenders, and hair dryers benefit from the PIC16LC782T-I/SO's combination of 3.5KB OTP for fixed function firmware, 8-bit DAC for heater/triac drive, and 8-bit ADC for temperature/proximity sensing. The 20-SOIC package enables single-sided PCB assembly, lowering BOM and manufacturing cost for high-volume products.
پیشنهادی
Battery-Powered Analog Trim & Calibration
The low-power CMOS 'LC' variant runs down to 2.5V, allowing the PIC16LC782T-I/SO to operate directly from a single lithium cell or two AA batteries while still driving the 8-bit DAC for calibration trim. Low quiescent current and the ability to wake from sleep on ADC interrupt make it ideal for infrequent analog calibration tasks in field instruments and IoT sensor nodes.
پیشنهادی
Automotive Body Electronics (non-safety)
While not AEC-Q100 qualified, the PIC16LC782T-I/SO industrial -40C to +85C rating makes it suitable for non-safety automotive body modules such as seat position memory, mirror trim, and ambient lighting where its 8-bit DAC and 16 GPIO suffice. The integrated analog peripherals eliminate external trim DACs, reducing PCB area and BOM cost per node.
پیشنهادی
خلاصه محصولات پیشنهادی
داده‌های مرجع مهندسی برای PIC16LC782T-I/SO — مقایسه، راهنمای طراحی و اطلاعات انطباق.
راهنمای انتخاب
مقایسه با جایگزین‌ها
| پارامتر | این محصول | PIC16LC782-I/SO | PIC16LC781-I/SO | PIC16LC717-I/SO | PIC16LC773-I/SO | PIC16LC770-E/SO |
|---|---|---|---|---|---|---|
| Package | 20-SOIC (7.50mm) | 20-SOIC (7.50mm) - same | 20-SOIC - same | 20-SOIC - same | 20-SOIC - same | 20-SOIC - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Memory | 3.5 KB (2K x 14) OTP | 3.5 KB OTP | ~3.5 KB OTP | ~2 KB OTP | 4 KB OTP | ~2 KB OTP |
| Data RAM | 128 x 8 bytes | 128 bytes | 128 bytes | 128 bytes | 256 bytes | 128 bytes |
| ADC | 8-bit, 8 channels | 8-bit, 8 ch | 8-bit, 8 ch | 8-bit, 6 ch | 12-bit, 8 ch | 8-bit, 6 ch |
| DAC | 8-bit, 1 channel | 8-bit, 1 ch | 8-bit, 1 ch | None | None | None |
| CPU Speed | 20 MHz | 20 MHz | 20 MHz | 20 MHz | 20 MHz | 20 MHz |
| I/O Pins | 16 | 16 | 16 | 16 | 16 | 16 |
| Supply Voltage | 2.5V to 5.5V | 2.5V to 5.5V | 2.5V to 5.5V | 2.5V to 5.5V | 2.5V to 5.5V | 2.5V to 5.5V |
تفاوت‌های کلیدی
- Integrated 8-bit DAC eliminates external trim DAC (در مقابلPIC16LC717-I/SO)
- Larger OTP memory than 717/770 family siblings (در مقابلPIC16LC770-E/SO)
- More capable ADC channel count than flash equivalents (در مقابلPIC16LC773-I/SO)
یادداشت‌های طراحی
The PIC16LC782T-I/SO requires a stable 2.5V to 5.5V supply with adequate bulk decoupling (10uF electrolytic + 0.1uF ceramic) placed within 1cm of VDD/VSS pins. The on-chip ADC is sensitive to supply ripple; for mixed-signal designs use a ferrite bead or LC filter between the digital VDD and analog AV-DD rail if present. Add a 100nF decoupling cap directly at each VDD pin pair to suppress switching transients from GPIO toggling.
OTP (One-Time-Programmable) memory cannot be re-programmed in-circuit. Engineers used to flash-based PIC16F parts must not assume firmware revisions are possible - plan firmware updates by physically swapping the MCU, or choose a flash-based PIC16F equivalent from the start. Verify the device ID and silicon revision match the expected die generation before programming; OTP programming voltages (VPP ~13V on MCLR) must be sequenced correctly to avoid permanent damage.
Route the analog ADC inputs (RA0-RA5, AN0-AN7) away from digital switching lines and clock traces to minimize coupled noise; place a ground guard ring around sensitive analog traces if board space allows. The on-chip 8-bit DAC output should be buffered if driving low-impedance loads (<10k ohm), as the integrated DAC has limited drive strength. Keep OSC1/OSC2 traces short and symmetric; long oscillator traces cause timing jitter and unreliable ADC conversions at 20MHz.
اطلاعات انطباق
RoHS, REACH, lead-free, halogen-free, and conflict-mineral status not present in the verified web data; verify against Microchip's material declaration before placing this part in a compliance-restricted design. Not AEC-Q100 qualified - the industrial -40C to +85C rating is not equivalent to automotive qualification.
