PIC16LC771-E/SO - 8-bit 7KB OTP MCU, 20MHz, 20-SOIC | Microchip
Référence : PIC16LC771-E/SO ✗ Fin de vie| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $5.4 | $5,40 |
| 10 | $4.85 | $48,50 |
| 100 | $4.32 | $432,00 |
| 500 | $3.89 | $1 945,00 |
| 1 000 | $3.46 | $3 460,00 |
PIC16LC771-E/SO Présentation
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, non-volatile program memory (here, OTP - one-time programmable), volatile data memory (RAM), and programmable I/O peripherals into one IC. Within the embedded hierarchy, MCUs sit below microprocessors in complexity but above simple logic ICs; the PIC16 family specifically targets 8-bit low-to-mid-range applications including sensing, control loops, and human-interface products. The PIC16LC771 belongs to the "LC" sub-family that operates over an extended voltage range while drawing lower quiescent current than the standard "C" versions.
Key features include a 14-bit instruction set, 8-channel 8-bit ADC, two analog comparators, capture/compare/PWM (CCP) module, USART with addressable synchronous mode, and synchronous serial port (SSP) supporting SPI and I2C. The LC variant supports 2.5V to 5.5V operation, suitable for both 3.3V and 5V rails, with typical active current around 2-5 mA at 4MHz and standby currents in the microamp range.
Architecturally, the PIC16LC771 uses a Harvard RISC architecture with separate program and data buses, providing deterministic instruction timing of 200ns at 20MHz. The OTP program memory is one-time programmable, making this part suitable for mature production where firmware is locked and no field updates are expected, unlike the flash-based PIC16F equivalents.
Typical applications include industrial sensor interfaces, HVAC controls, small appliance controllers, automotive body electronics (non-safety subsystems), battery-powered instruments, and consumer white goods. The combination of low-voltage LC operation, onboard ADC, and CCP makes it practical for closed-loop control tasks. The "-E" suffix indicates the extended operating temperature grade of -40C to +125C, suitable for industrial and automotive environments.
When designing with this part, note that OTP memory cannot be rewritten; ensure firmware is fully validated before programming. The 20-SOIC package is hand-solderable for prototyping and supports standard PICkit and ICD programmer/debugger interfaces. This page synthesizes distributor availability, parameter cross-checks, and same-package replacement guidance not always collected in the manufacturer datasheet.
Alternatives de remplacement direct pour PIC16LC771-E/SO — même boîtier, compatible broche à broche. Les références à boîtier différent nécessitant une retouche du PCB sont exclues.
Variantes de cette série
Modèles de la même série directement compatibles avec PIC16LC771-E/SO (même facteur de forme et même empreinte) — différant par Package, Program Memory Size, ADC, Operating Temperature, RAM Size.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
PIC16LC771-I/SO
✅ Remplacement direct ⚠️ Spécifications non vérifiées✓ En stock
$2.04 / unité
Voir la fiche technique →PIC16LC771T-I/SO
✅ Remplacement direct ⚠️ Spécifications non vérifiées✓ En stock
$4.3 / unité
Voir la fiche technique →PIC16LC770-E/SO
✅ Remplacement direct ⚠️ Spécifications non vérifiées✓ En stock
$4.4 / unité
Voir la fiche technique →PIC16LC717-I/SO
✅ Remplacement direct ⚠️ Spécifications non vérifiées✓ En stock
$2.85 / unité
Voir la fiche technique →PIC16LC711-04I/SO
✅ Remplacement direct✓ En stock
$3.78 / unité
Voir la fiche technique →PIC16LC771-E/SO Valeurs maximales et caractéristiques électriques
| Manufacturer | Microchip Technology |
| Series | PIC 16C |
| Core Processor | PIC |
| Core Size | 8-bit |
| Program Memory Size | 7 KB (4K x 14) OTP |
| RAM Size | 256 x 8 bytes |
| Maximum Clock Speed | 20 MHz |
| Number of I/O Pins | 16 |
| Boîtier | 20-SOIC (0.295 inch, 7.50 mm width) |
| Operating Voltage Range | 2.5 V to 5.5 V (LC variant) |
| Plage de température de fonctionnement | -40 C to +125 C (extended -E grade) |
| ADC | 8-channel, 8-bit |
| Analog Comparators | 2 |
| Peripherals | Brown-out Detect, CCP, POR, WDT |
| Connectivity | I2C, SPI, UART/USART |
| Type de montage | Surface Mount |
Configuration des broches de PIC16LC771-E/SO
| Broche 1 | MCLR/VPP — Master clear (reset) input / programming voltage |
| Broche 2 | RA0/AN0 — Port A bit 0 / analog input 0 |
| Broche 3 | RA1/AN1 — Port A bit 1 / analog input 1 |
| Broche 4 | RA2/AN2/VREF- — Port A bit 2 / analog input 2 / ADC VREF- |
| Broche 5 | RA3/AN3/VREF+ — Port A bit 3 / analog input 3 / ADC VREF+ |
| Broche 6 | RA4/T0CKI — Port A bit 4 / Timer 0 clock input |
| Broche 7 | RA5/AN4/SS — Port A bit 5 / analog input 4 / SPI slave select |
| Broche 8 | VSS — Ground reference |
| Broche 9 | OSC1/CLKIN — Crystal oscillator input / external clock in |
| Broche 10 | OSC2/CLKOUT — Crystal oscillator output / clock out |
| Broche 11 | RC0/T1OSO/T1CKI — Port C bit 0 / Timer 1 oscillator output / Timer 1 clock input |
| Broche 12 | RC1/T1OSI/CCP2 — Port C bit 1 / Timer 1 oscillator input / CCP2 |
| Broche 13 | RC2/CCP1 — Port C bit 2 / CCP1 (PWM/capture/compare) |
| Broche 14 | RC3/SCK/SCL — Port C bit 3 / SPI clock / I2C clock |
| Broche 15 | RC4/SDI/SDA — Port C bit 4 / SPI data in / I2C data |
| Broche 16 | RC5/SDO — Port C bit 5 / SPI data out |
| Broche 17 | RC6/TX/CK — Port C bit 6 / USART TX / USART clock |
| Broche 18 | RC7/RX/DT — Port C bit 7 / USART RX / USART data |
| Broche 19 | VSS — Ground reference |
| Broche 20 | VDD — Positive supply voltage (2.5V to 5.5V) |
Applications typiques
PIC16LC771-E/SO convient pour 6 applications: Industrial Sensor Interface, Battery-Powered Instruments, HVAC Zone Controller, Small Appliance Control, Automotive Body Electronics, Consumer White Goods.
Industrial Sensor Interface
The PIC16LC771-E/SO fits industrial sensor interface boards because its 8-channel 8-bit ADC handles multiple analog sensors simultaneously while the 2.5V-5.5V LC supply range tolerates unregulated 5V industrial rails. The -40C to +125C extended temperature grade supports factory-floor enclosures. With 16 I/O, designers wire sensors, alert LEDs, and management UART outputs without external I/O expanders. The 20 MHz core executes 5 MIPS, adequate for low-rate sensor polling, debouncing, and linearization. Compared to discrete ADC-plus-MCU designs, integrating ADC and CCP on one chip reduces BOM cost for high-volume industrial deployments.
Recommandé
Battery-Powered Instruments
The LC (low-power CMOS) variant draws microamp-level standby current, making the PIC16LC771-E/SO appropriate for battery-powered handheld instruments such as digital multimeters, portable flow meters, and field data loggers. The 2.5V minimum supply allows operation from two AA cells down to their end-of-life voltage. With 256 bytes RAM and 7KB OTP program space, designers can implement sleep modes, sensor sampling, and basic LCD drive within a single chip. The 20-SOIC package supports compact handheld enclosures, and the extended -E temperature grade handles outdoor field conditions.
Recommandé
HVAC Zone Controller
The PIC16LC771-E/SO serves as a zone controller in residential and light-commercial HVAC systems, where the 8-bit core runs scheduling algorithms and the ADC reads temperature sensors and potentiometer setpoints. The 10-bit CCP output drives a proportional valve or fan-speed PWM signal at frequencies suitable for triac-based motor control. Brown-out detect (BOD) protects against brownouts during compressor cycling, and the watchdog timer (WDT) recovers the controller from firmware lockup. The 20-SOIC is hand-solderable for low-volume installer wiring harnesses.
Recommandé
Small Appliance Control
Coffee machines, washing machines, microwave ovens, and similar small appliances use the PIC16LC771-E/SO as the main control MCU. The CCP PWM drives a heater element or motor speed, the ADC reads thermistors and water-level sensors, and the USART connects to an LED or character-LCD display. The 16 I/O accept keypad scanning, door-switch sensing, and buzzer drive. OTP memory locks production firmware against field tampering, while the -40C to +125C grade supports the appliance interior thermal environment. This is a cost-optimized BOM that replaces dozens of discrete logic ICs with one chip.
Recommandé
Automotive Body Electronics
Non-safety automotive subsystems such as seat controllers, mirror adjusters, sunroof modules, and interior lighting can use the PIC16LC771-E/SO. The -40C to +125C extended temperature grade supports the automotive cabin and engine-bay periphery, and the ADC reads current-sense shunts for window/liftgate position feedback. The CCP PWM drives small DC motors for mirror and seat actuation. Note that safety-critical systems (airbag, ABS, steering) require AEC-Q100 qualified parts; this device is suitable only for body-comfort subsystems, with the automotive-grade PIC16F equivalents preferred where field updates are needed.
Recommandé
Consumer White Goods
Refrigerators, freezers, dishwashers, and similar consumer white goods use the PIC16LC771-E/SO for compressor control, defrost timing, door-alarm sensing, and user-interface LED/LCD drive. The extended temperature grade handles compressor-pad heat, while the OTP memory locks validated firmware against aftermarket tampering. The 8-bit core handles simple scheduling without RTOS overhead, and the 256-byte RAM suffices for parameter storage during transient power events. Brown-out detect (BOD) ensures clean MCU resets across power-line glitches, important for reliability in home-appliance deployments.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour PIC16LC771-E/SO — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | PIC16LC771-I/SO | PIC16LC771T-I/SO | PIC16LC770-E/SO | PIC16LC717-I/SO | PIC16LC711-04I/SO |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 20-SOIC | 20-SOIC - same | 20-SOIC - same | 20-SOIC - same | 20-SOIC - same | 20-SOIC - same |
| Program Memory | 7 KB OTP (4K x 14) | 7 KB OTP | 7 KB OTP | 7 KB OTP | 7 KB OTP | 1.75 KB OTP (1K x 14) |
| RAM Size | 256 bytes | 256 bytes | 256 bytes | 256 bytes | 256 bytes | 128 bytes |
| Max Clock Speed | 20 MHz | 20 MHz | 20 MHz | 20 MHz | 20 MHz | 4 MHz |
| ADC | 8-channel, 8-bit | 8-channel, 8-bit | 8-channel, 8-bit | No ADC | 8-channel, 12-bit | 4-channel, 8-bit |
| Operating 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 |
| Operating Temperature | -40C to +125C | -40C to +85C | -40C to +85C | -40C to +125C | -40C to +85C | -40C to +85C |
Principaux différenciateurs
- Extended -E temperature grade for industrial deployment (vs PIC16LC771-I/SO)
- 12-bit ADC upgrade available in same package (vs PIC16LC717-I/SO)
- Same 20-SOIC footprint across the family simplifies PCB reuse (vs PIC16LC711-04I/SO)
Notes de conception
PIC16LC771-E/SO uses OTP (one-time programmable) memory: once programmed, the firmware cannot be erased or rewritten. Ensure firmware is fully validated with a flash-based equivalent (PIC16F777) before committing to OTP. Field returns due to firmware bugs cannot be recovered and require board-level replacement. For development, always prototype with PIC16F777-I/SO or use a UV-erasable windowed CERDIP package (PIC16LC771-E/PW not available; use PIC16C771-04/P for windowed erase).
The LC variant operates over 2.5V-5.5V supply. Below 4.0V, the ADC accuracy degrades by approximately 1 LSB; for precision analog measurement above 10-bit effective resolution, use the 5.0V nominal supply. Place a 100nF decoupling capacitor as close as possible to pin 4 (VDD) and pin4 to VSS; add a 10uF bulk capacitor at the supply rail entry. The MCLR/VPP pin (pin 1) requires a 10k pull-up to VDD for normal operation and a low-impedance path to the programmer for in-circuit serial programming.
When using the ADC, route analog and digital signals on separate PCB layers with a ground pour between them. Keep the analog reference (RA3/VREF+, RA2/VREF-) traces short and away from switching nodes. The crystal oscillator pins (OSC1/OSC2, pins 9-10) require short traces to the crystal, with a ground guard ring for noise immunity. Place the crystal within 5mm of the MCU and avoid routing digital signals beneath it.
Estimated: at 20 MHz active, VDD = 5V, the PIC16LC771-E/SO draws approximately 10-15 mA, dissipating 50-75 mW. The 20-SOIC thermal resistance (theta_JA) is roughly 80-100 C/W, yielding a junction temperature rise of 4-7 C above ambient. No heatsink is required. However, in sealed enclosures above +60 C ambient, verify junction temperature stays within the -40C to +125C operating range. Sleep mode reduces quiescent current below 1 uA, suitable for battery-backed applications.
Informations de conformité
RoHS and REACH status not present in verified sources; manufacturer lead-free process assumed based on Microchip standard product declaration. Not AEC-Q100 qualified - not suitable for safety-critical automotive systems. For automotive body-electronics applications, choose an AEC-Q100 qualified flash variant such as PIC16F1829-I/SO.
