PIC16LC771T-I/SS - 8-Bit MCU, 7KB OTP, 20MHz, 12-Bit ADC | Microchip
MPN: PIC16LC771T-I/SS ✗ اختتامِ زندگیPIC16LC771T-I/SS جائزہ
A microcontroller (MCU) is a single-chip computer that integrates a processor core, program memory, data memory, and peripherals on one IC. The PIC16LC77x family belongs to the broader PIC16 8-bit mid-range family, which sits inside the 8-bit MCU segment of the embedded hierarchy (8-bit MCU -> microcontroller -> embedded processor -> semiconductor IC). The PIC16LC771 specifically targets low-voltage operation (the "LC" prefix denotes a 3.3V nominal part).
Key features include a 12-bit A/D converter (up to 16 channels depending on package), 16 I/O pins with individual direction control, USART, MSSP (SPI/I2C), two 8-bit timers plus one 16-bit timer, and an enhanced capture/compare/PWM module. The "L" designation indicates operation from 3.0V to 5.5V, suiting battery-powered or 3.3V regulated rails. The 20 MHz oscillator enables 200 ns instruction cycle throughput.
The PIC16LC771 uses a Harvard-architecture RISC core with 35 single-word instructions. Its 12-bit ADC (successive approximation) provides up to 12 channels on the 20-pin package, with an internal sample-and-hold. The OTP memory allows one-time field programming - suitable for production runs but not for firmware updates.
Typical applications include industrial control front-ends, instrumentation data acquisition, sensor signal processing, and HVAC system management. The 12-bit ADC and ample digital I/O make it well-suited for mixed-signal embedded products.
When designing with this part, ensure the Vdd rail is decoupled with 100 nF ceramic at each supply pin and a bulk 10 uF tantalum. The MCLR pin must be pulled high through a 10 k resistor; do not leave it floating.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
کے لیے ڈراپ اِن متبادل PIC16LC771T-I/SS — یکساں پیکیج، پن سے پن مطابقت پذیر۔ مختلف پیکیج والے پرزے جن کے لیے PCB دوبارہ کام درکار ہو، شامل نہیں ہیں۔
اس سیریز میں مختلف ورژن
اسی سیریز کے ماڈلز جو ڈراپ اِن مطابقت رکھتے ہیں PIC16LC771T-I/SS (یکساں فارم فیکٹر اور فٹ پرنٹ) — میں مختلف ADC, Communication, Package, Timers, Core.
PIC16LC770T-I/SS
✅ ڈراپ-اِنقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →PIC16LC771T-E/SS
✅ ڈراپ-اِنقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →PIC16F887T-I/SS
✅ ڈراپ-اِن ⚠️ تفصیلات غیر تصدیق شدہ📋 حوالہ جاتی متبادل (کیٹلاگ میں نہیں)
PIC16LC771T-I/SS زیادہ سے زیادہ ریٹنگز اور برقی خصوصیات
| Core | PIC16 (8-bit RISC, Harvard) |
| Program Memory | 7 KB (4K x 14) OTP |
| Data Memory (RAM) | 256 bytes |
| زیادہ سے زیادہ کلاک فریکوئنسی | 20 MHz |
| Instruction Cycle | 200 ns (at 20 MHz) |
| ADC | 12-bit, up to 16 channels |
| Operating Voltage (Vdd) | 3.0 V to 5.5 V |
| I/O Pins | 16 |
| Timers | 2 x 8-bit + 1 x 16-bit |
| Communication | USART + SPI + I2C (MSSP) |
| پیکیج | 20-pin SSOP |
| ماؤنٹنگ ٹائپ | Surface Mount |
| آپریٹنگ درجہ حرارت | -40C to +85C (Industrial) |
PIC16LC771T-I/SS پن کنفیگریشن
| پن 1 | RA0/AN0 — Digital I/O / Analog channel 0 |
| پن 2 | RA1/AN1 — Digital I/O / Analog channel 1 |
| پن 3 | RA2/AN2/Vref- — Digital I/O / Analog channel 2 / ADC negative reference |
| پن 4 | RA3/AN3/Vref+ — Digital I/O / Analog channel 3 / ADC positive reference |
| پن 5 | RA4/T0CKI — Digital I/O / Timer0 clock input |
| پن 6 | RA5/AN4/SS — Digital I/O / Analog channel 4 / SPI slave select |
| پن 7 | Vss — Ground |
| پن 8 | OSC1/CLKI — Crystal oscillator input / external clock |
| پن 9 | OSC2/CLKO — Crystal oscillator output / clock out |
| پن 10 | RC0/T1OSO/T1CKI — Digital I/O / Timer1 oscillator output / Timer1 clock |
| پن 11 | RC1/T1OSI/CCP2 — Digital I/O / Timer1 oscillator input / CCP2 |
| پن 12 | RC2/CCP1 — Digital I/O / CCP1 PWM output |
| پن 13 | RC3/SCK/SCL — Digital I/O / SPI clock / I2C clock |
| پن 14 | RC4/SDI/SDA — Digital I/O / SPI data in / I2C data |
| پن 15 | RC5/SDO — Digital I/O / SPI data out |
| پن 16 | RC6/TX/CK — Digital I/O / USART TX / USART clock |
| پن 17 | RC7/RX/DT — Digital I/O / USART RX / USART data |
| پن 18 | Vdd — Positive supply (3.0-5.5V) |
| پن 19 | Vss — Ground |
| پن 20 | MCLR/Vpp — Reset (active low) / Programming voltage |
عام استعمالات
PIC16LC771T-I/SS کے لیے موزوں ہے 6 ایپلیکیشنs: Industrial Sensor Signal Conditioning, Battery-Powered Data Loggers, HVAC Control Systems, Instrumentation Front-End, Automotive Body Electronics (Non-Safety), Embedded Control with Mixed-Signal I/O.
Industrial Sensor Signal Conditioning
The PIC16LC771T-I/SS fits industrial 4-20 mA loop-powered sensor front-ends because its 12-bit ADC delivers 4096-step resolution across the 0-5V industrial signal range, and its 16 digital I/O pins can drive H-bridges, opto-isolators, and status LEDs. The 3.0-5.5V supply matches 24V loop-powered regulators down-converted to 5V. The 20 MHz core handles linearization math and HART-style modulation in software. Compared to a discrete op-amp + ADC solution, the integrated MCU reduces BOM count and PCB complexity.
تجویز کردہ
Battery-Powered Data Loggers
The "LC" low-voltage variant of the PIC16LC771T-I/SS operates from 3.0V making it suitable for battery-powered data loggers running from two AA cells or a single Li-ion cell. The 256-byte RAM and 7 KB OTP handle circular buffer management and sample scheduling. The 12-bit ADC supports direct connection to temperature, voltage, and current sensors without external signal conditioning. Sleep current down to microamp range extends battery life. The SSOP-20 package keeps the design footprint compact for handheld instruments.
تجویز کردہ
HVAC Control Systems
The PIC16LC771T-I/SS is well-suited to HVAC damper and valve control where multiple analog inputs (temperature, humidity, pressure) and digital outputs (relay drivers, triac gates) are required. The 12-bit ADC reads thermistor bridges with sufficient resolution for 0.1 C setpoint control. USART enables communication with a master Building Management System (BMS) over RS-485 transceivers. The -40 C to +85 C industrial temperature range covers unconditioned equipment-room environments. OTP memory suits the locked firmware profile of production HVAC controllers.
تجویز کردہ
Instrumentation Front-End
Precision instrumentation front-ends benefit from the PIC16LC771T-I/SS 12-bit ADC and 20 MHz processing throughput. Multiplexing multiple sensor channels through the 12-bit ADC reduces analog switching complexity; the USART streams digitized data to a host PC or display controller. The 3.0-5.5V supply tolerates regulated USB power or laboratory bench supplies. Combined with the SSOP-20 small outline, it fits compact bench-top instruments and panel meters where board space is at a premium.
تجویز کردہ
Automotive Body Electronics (Non-Safety)
Body-control modules (mirror adjusters, seat controllers, interior accessory timers) can leverage the PIC16LC771T-I/SS 16 I/O pins and 12-bit ADC for reading potentiometer positions and driving relays. The "I" industrial temperature grade covers cabin environments (-40 C to +85 C); for under-hood applications, the "E" extended grade PIC16LC771T-E/SS is preferred. OTP memory locks the firmware at production. Note that AEC-Q100 automotive qualification is NOT claimed for this part; for safety-critical body ECUs use PIC16F887 automotive grades.
تجویز کردہ
Embedded Control with Mixed-Signal I/O
Mixed-signal embedded products (smart thermostats, programmable logic controllers, motor-control boards) benefit from the PIC16LC771T-I/SS combination of 12-bit ADC, PWM module, USART, and 16 GPIO. The PWM channel generates timing signals for triac-fired heater elements or DC motor speed control; the ADC monitors process feedback. The 20 MHz instruction rate handles PID control loops at 1 kHz update rates. SSOP-20 surface-mount package suits modern SMT assembly lines for cost-effective volume production.
تجویز کردہ
تجویز کردہ پروڈکٹس کا خلاصہ
کے لیے انجینئرنگ ریفرنس ڈیٹا PIC16LC771T-I/SS — موازنہ، ڈیزائن رہنمائی، اور تعمیل کی معلومات۔
انتخاب کی گائیڈ
متبادلات کے ساتھ موازنہ
| پیرامیٹر | یہ پروڈکٹ | PIC16LC770T-I/SS | PIC16LC771T-E/SS | PIC16F887T-I/SS | PIC16LC771T-I/SO |
|---|---|---|---|---|---|
| Package | 20-pin SSOP | 20-pin SSOP - same | 20-pin SSOP - same | 20-pin SSOP - same | 20-pin SOIC - different |
| Brand | Microchip Technology | Microchip Technology - same | Microchip Technology - same | Microchip Technology - same | Microchip Technology - same |
| Program Memory | 7 KB OTP | 7 KB OTP - same | 7 KB OTP - same | 14 KB Flash - different | 7 KB OTP - same |
| ADC Resolution | 12-bit | 10-bit - different | 12-bit - same | 14-bit - different | 12-bit - same |
| Maximum Clock | 20 MHz | 20 MHz - same | 20 MHz - same | 20 MHz - same | 20 MHz - same |
| Operating Voltage | 3.0-5.5 V | 3.0-5.5 V - same | 3.0-5.5 V - same | 2.0-5.5 V - wider | 3.0-5.5 V - same |
| RAM | 256 bytes | 256 bytes - same | 256 bytes - same | 368 bytes - different | 256 bytes - same |
| Temperature Grade | Industrial (-40C to +85C) | Industrial (-40C to +85C) - same | Extended (-40C to +125C) - wider | Industrial (-40C to +85C) - same | Industrial (-40C to +85C) - same |
| I/O Pins | 16 | 16 - same | 16 - same | 36 - different (28/40-pin variants) | 16 - same |
اہم امتیازی خصوصیات
- 12-bit ADC resolution vs same-family 10-bit alternatives (بمقابلہPIC16LC770T-I/SS)
- Wide operating voltage for 3.3V and 5V designs (بمقابلہPIC16F877A-I/SS)
- OTP memory locks production firmware (بمقابلہPIC16F887T-I/SS)
ڈیزائن نوٹس
Decouple Vdd with a 100 nF ceramic capacitor placed within 5 mm of the Vdd pin (pin 18) and a bulk 10 uF tantalum or aluminum electrolytic capacitor on the same supply rail. The Vss pin (pin 19) must connect to a low-impedance ground plane; a single-point ground topology is acceptable for low-frequency analog designs. Estimated: a single 100 nF X7R ceramic at 5 mm loop inductance is sufficient to suppress switching transients up to 200 MHz.
The MCLR pin (pin 20) must be pulled high through a 10 kohm resistor to Vdd; do not leave it floating, or the MCU will randomly reset during operation. For ICSP (In-Circuit Serial Programming), MCLR must reach 13V Vpp; place a diode or resistor divider to isolate the programming voltage from the rest of the circuit. The OSC1/OSC2 pins should not be used as digital I/O when the internal oscillator is selected, or the oscillator will malfunction.
Route the analog ADC inputs (RA0-RA5) away from high-frequency digital signals (USART, SPI clock lines) and from switching power converters. Place a ground plane under the MCU and dedicate an analog ground island for the ADC reference and analog inputs. Estimated: 5 mm trace separation reduces digital-to-analogic coupling by approximately 20 dB at 100 MHz; a continuous ground plane under the analog traces further reduces pickup.
تعمیل کی معلومات
Specific RoHS and REACH status not listed in Verified Web Data; marked unknown per Data Authenticity Rules. AEC-Q100 not claimed - this part is not qualified for automotive safety applications. For automotive ECUs, use AEC-Q100-qualified variants such as PIC16F887-E/SS or PIC18F equivalents.
