PIC16LC771T/SS - 8-Bit 20MHz 7KB PIC16 MCU SSOP-20 | Microchip
MPN: PIC16LC771T/SS ✗ End of Life| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $3.85 | $3.85 |
| 10 | $3.45 | $34.50 |
| 100 | $2.95 | $295.00 |
| 500 | $2.55 | $1,275.00 |
| 1,000 | $2.2 | $2,200.00 |
PIC16LC771T/SS Overview
A microcontroller (MCU) is a single-chip computer that embeds a CPU, RAM, non-volatile program memory, and programmable I/O. The PIC16 family uses a Harvard-architecture 8-bit RISC core optimized for deterministic instruction execution, low power, and a compact instruction set; PIC16 devices typically sit in the hierarchy MCU -> 8-bit microcontroller -> PIC16 sub-family -> PIC16LC (low-voltage) sub-family, where the LC sub-family is targeted at 2.5V-3.6V battery-powered applications requiring moderate throughput. Program memory is OTP, meaning each chip can be written only once and is well suited to volume production runs where firmware has stabilized.
Key features of the PIC16LC771T/SS include: 7KB (4K x 14) OTP program memory, 256 bytes of data RAM typical of mid-range PIC16 devices, 20MHz maximum oscillator frequency delivering up to 5 MIPS throughput, 20-bit wide instruction word for compact opcode encoding, and a 20-pin SSOP package for compact PCB layouts. The 'LC' variant also implies low-power operation versus standard 'C' parts, enabling battery-backed designs.
Typical applications include industrial control nodes, sensor interface modules, low-cost consumer appliances, motor-control peripherals, white-goods user interfaces, and remote-control transmitters. The 20-pin count is well matched to designs needing 14-16 I/O lines plus oscillator and supply pins.
When designing with the PIC16LC771T/SS, ensure the VDD range matches the 'LC' 2.5V-3.6V specification rather than 5V - using 5V will damage the part or cause out-of-spec operation. Plan firmware development with a PICkit or ICD programmer supporting OTP-windowed devices if re-spin is needed; for production runs, OTP enforces single-attempt programming. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the standalone manufacturer datasheet.
Drop-in alternatives for PIC16LC771T/SS — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with PIC16LC771T/SS (same form factor and footprint) — differing in Package, ADC, Operating Temperature, Timers, Data RAM.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16LC770T-I/SS
✅ Drop-In✓ In Stock
$2.58 / Unit
View Datasheet →PIC16LC717T-I/SO
✅ Drop-In✓ In Stock
$1.72 / Unit
View Datasheet →PIC16LC72T-04/SS
✅ Drop-In✓ In Stock
$5.05 / Unit
View Datasheet →PIC16LC73BT-04I/SS
✅ Drop-In✓ In Stock
$4.55 / Unit
View Datasheet →PIC16LC711T-04E/SS
✅ Drop-In✓ In Stock
$4.95 / Unit
View Datasheet →PIC16LC771T/SS Maximum Ratings & Electrical Characteristics
| Core | PIC16 8-bit RISC |
| CPU Architecture | Harvard, 8-bit data, 14-bit instruction word |
| Maximum CPU Frequency | 20 MHz |
| Program Memory Type | OTP (One-Time Programmable) |
| Program Memory Size | 7 KB (4K x 14) |
| RAM | 256 bytes |
| Operating Voltage Range (LC) | 2.5 V to 3.6 V |
| Package | 20-pin SSOP (5.30 mm body width) |
| Mounting Type | Surface Mount |
| Temperature Grade | Commercial |
| Terminal Form | Gull Wing |
| Number of Terminals | 20 |
| Package Code | SSOP |
| Instruction Set | PIC16 mid-range, 35 instructions |
PIC16LC771T/SS Pin Configuration
| Pin 1 | MCLR/VPP — Master Clear (reset) input / programming voltage |
| Pin 2 | RA0/AN0 — Port A bit 0 / analog input 0 |
| Pin 3 | RA1/AN1 — Port A bit 1 / analog input 1 |
| Pin 4 | RA2/AN2 — Port A bit 2 / analog input 2 |
| Pin 5 | RA3/AN3/VREF+ — Port A bit 3 / analog input 3 / positive voltage reference |
| Pin 6 | RA4/T0CKI — Port A bit 4 / Timer0 clock input |
| Pin 7 | RA5/AN4/SS — Port A bit 5 / analog input 4 / SPI slave select |
| Pin 8 | VSS — Ground reference |
| Pin 9 | OSC1/CLKIN — Oscillator crystal input / external clock input |
| Pin 10 | OSC2/CLKOUT — Oscillator crystal output / clock output |
| Pin 11 | RC0/T1OSO/T1CKI — Port C bit 0 / Timer1 oscillator output / Timer1 clock input |
| Pin 12 | RC1/T1OSI/CCP2 — Port C bit 1 / Timer1 oscillator input / CCP2 |
| Pin 13 | RC2/CCP1 — Port C bit 2 / Capture-Compare-PWM 1 |
| Pin 14 | RC3/SCK/SCL — Port C bit 3 / SPI clock / I2C clock |
| Pin 15 | RC4/SDI/SDA — Port C bit 4 / SPI data in / I2C data |
| Pin 16 | RC5/SDO — Port C bit 5 / SPI data out |
| Pin 17 | RC6/TX/CK — Port C bit 6 / USART TX / USART clock |
| Pin 18 | RC7/RX/DT — Port C bit 7 / USART RX / USART data |
| Pin 19 | VDD — Positive supply (2.5 V to 3.6 V on LC variant) |
| Pin 20 | RB7/PGD — Port B bit 7 / ICSP data |
Typical Applications
PIC16LC771T/SS is suitable for 6 applications: Industrial Sensor Interface Module, Low-Cost Consumer Appliance Controller, Remote Control Transmitter, Motor Control Peripheral Driver, White Goods User Interface Board, Battery-Backed IoT Edge Sensor Node.
Industrial Sensor Interface Module
The PIC16LC771T/SS fits industrial sensor interface designs because its 7 KB OTP program memory and 20 MHz CPU clock deliver up to 5 MIPS throughput - sufficient for polled 12-bit ADC sampling at rates above 100 kSPS while leaving MIPS budget for linearization math. The LC variant's 2.5 V to 3.6 V VDD matches 3.3 V industrial sensor rails, and the 20-pin SSOP footprint places 14-16 I/O lines within reach of typical 4-8 channel transducer boards. Place a 10 uF + 0.1 uF decoupling pair within 5 mm of the VDD pin, and use the internal weak-pull on MCLR to reduce BOM. Compared with newer PIC16F1xxx, the PIC16LC771T/SS is preferred when the firmware has stabilized and OTP single-write cost reduction matters more than field updates.
Recommended
Low-Cost Consumer Appliance Controller
The PIC16LC771T/SS suits low-cost consumer appliance controllers because its OTP program memory removes the need for in-circuit programming infrastructure in production, lowering per-unit cost in high-volume white-goods runs. The 8-bit PIC16 core running at 20 MHz handles keypad scanning, LED multiplexing and UART communication to a host controller or display module without overhead. Operate the LC variant on a 3.3 V LDO regulator for energy-starful standby and supply capability. Pair the MCU with a triac-driving optocoupler on high-voltage outputs; the 20-pin SSOP footprint leaves enough GPIO for relay banks and rotary-encoder inputs. Compared with the larger-pin-count PIC16F876A, the PIC16LC771T/SS keeps BOM cost lower when firmware has stabilized.
Recommended
Remote Control Transmitter
The PIC16LC771T/SS suits handheld remote control transmitters because its 2.5 V to 3.6 V LC operation runs directly from two alkaline or single lithium cells, and the 20 MHz CPU speed easily encodes IR or sub-GHz OOK/FSK transmission sequences. The 20-pin SSOP package keeps PCB area under 50 mm², leaving room for a CR2032 holder and a piezo sounder. The PIC16 mid-range core's 14-bit instruction word compresses state-machine firmware, allowing 7 KB of OTP to encode multiple device profiles plus a learn mode. Designers can use the MSSP peripheral for SPI-driven RF modules; for purely IR designs, drive the LED directly from a CCP PWM output with a transistor current sink. The OTP-only constraint matters less here because remote firmware rarely changes after launch.
Recommended
Motor Control Peripheral Driver
The PIC16LC771T/SS handles peripheral motor drivers because the PIC16 core's deterministic 200 ns instruction cycle at 20 MHz enables accurate PWM generation for brushed DC or small stepper control loops. The CCP modules can produce complementary PWM with dead-time insertion when paired with external gate drivers, and the 12-bit ADC allows current sensing via shunt amplifier feedback. The 20-pin SSOP package exposes enough GPIO for direction-control pins, enable lines and fault inputs. Designers should isolate high-current motor ground from MCU analog ground with a star-ground topology and place 0.1 uF + 10 uF decoupling within 5 mm of VDD. Compared with PIC18 or dsPIC parts, the PIC16LC771T/SS keeps cost down when the algorithm is simple and the firmware is finalized.
Recommended
White Goods User Interface Board
The PIC16LC771T/SS supports white-goods user-interface boards because its 20-pin SSOP footprint integrates within the tight 50 mm × 30 mm UI board footprint and the 20 MHz CPU clock scans 7-segment or dot-matrix displays with no perceived flicker at 100 Hz refresh. The LC process variant's 2.5 V to 3.6 V operation matches 3.3 V display-driver rails. The PIC16 mid-range core's 35-instruction set compiles efficiently for menu-handling, knob-encoder and cap-touch firmware. Pair the controller with an LED-driver companion chip for high-side indication and with a piezo buzzer for audible feedback. The OTP memory is preferred in UI boards because production volumes are high and firmware rarely changes after the appliance model is launched.
Recommended
Battery-Backed IoT Edge Sensor Node
The PIC16LC771T/SS fits battery-backed IoT edge sensor nodes because the LC process variant's low quiescent current extends coin-cell or 2xAA runtime, while the 20 MHz maximum frequency handles modest sensor-fusion workloads at burst rates above 1 kHz. The 20-pin SSOP package keeps PCB small for in-enclosure integration. Pair with a sub-GHz or BLE companion module over UART; the MSSP peripheral supports SPI if a higher-bandwidth radio is needed. Use the 12-bit ADC for direct thermocouple or strain-gauge readout and the CCP modules for PWM-controlled excitation. Compared with newer PIC16F1xxx or PIC18 parts, the PIC16LC771T/SS is preferred when firmware is fixed and BOM cost dominates design priorities.
Recommended
Recommended Products Summary
Engineering reference data for PIC16LC771T/SS — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16LC770T-I/SS | PIC16LC717T-I/SO | PIC16LC72T-04/SS | PIC16LC73BT-04I/SS | PIC16LC711T-04E/SS |
|---|---|---|---|---|---|---|
| Package | 20-pin SSOP | 20-pin SSOP | 20-pin SSOP | 20-pin SSOP | 20-pin SSOP | 20-pin SSOP |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Memory | 7 KB OTP | 7 KB OTP | 3.5 KB OTP | 3.5 KB OTP | 7 KB OTP | 1.75 KB OTP |
| CPU Frequency | 20 MHz | 20 MHz | 20 MHz | 20 MHz | 20 MHz | 20 MHz |
| Operating Voltage (LC) | 2.5 V to 3.6 V | 2.5 V to 3.6 V | 2.5 V to 3.6 V | 2.5 V to 3.6 V | 2.5 V to 3.6 V | 2.5 V to 3.6 V |
| Memory Type | OTP | OTP | OTP | OTP | OTP | OTP |
| Pin Count | 20 | 20 | 20 | 20 | 20 | 20 |
| Lifecycle | Obsolete (mature) | Obsolete | Obsolete | Obsolete | Obsolete | Obsolete |
Key Differentiators
- Low-voltage CMOS (LC) process variant for 3.3 V-only designs (vs PIC16C771-20/P)
- 20 MHz CPU clock at 3.3 V (vs PIC16LC711T-04E/SS)
- Larger OTP program memory than the PIC16LC711/LC72 family (vs PIC16LC711T-04E/SS)
Design Notes
Estimated: The PIC16LC771T/SS LC variant operates from 2.5 V to 3.6 V. Use a 3.3 V LDO (e.g., MIC39150) rated for at least 100 mA, with a 10 uF bulk + 0.1 uF ceramic decoupling pair placed within 5 mm of the VDD pin (pin 19). Connect VSS (pin 8) directly to the ground plane with a short trace. Avoid routing high-current switching nodes near the analog AVss/Vss split if your design adds external analog circuitry. Decoupling must precede any inrush current from peripheral loads.
Do not apply 5 V to PIC16LC771T/SS - the LC process variant is rated only to 3.6 V, and the standard 5 V 'C' variant is the only 5 V-tolerant member of the family. Mistaking 'C' and 'LC' suffixes will damage the part. The 'T' suffix indicates tape-and-reel orientation, not a temperature grade - the LC commercial part is rated 0 to +70 C. For programming, the OTP variant can only be written one time; fully validate firmware in PIC16F870/871 flash equivalents before committing to PIC16LC771T/SS production units.
Estimated: For 20 MHz operation, place a 22 pF or 33 pF load capacitor pair on OSC1/OSC2 (pins 9 and 10) for crystal mode, or drive OSC1 with a 4-clock CMOS clock source in external clock mode. Keep oscillator traces short and surrounded by ground pour to minimize EMI. MCLR/VPP (pin 1) should connect to VDD through a 10 kohm pull-up resistor; place a 100 nF capacitor on MCLR only if the design uses ICSP, otherwise omit to avoid reset timing issues. Keep ICSP PGD/PGC traces short to the ICSP header.
The 20-pin SSOP footprint measures approximately 7.2 mm × 7.8 mm with 0.65 mm pin pitch - allocate a land pattern that meets IPC-7351 nominal standards. Use a thermal relief spoke pattern on all pads to ease rework, and place the SSOP orientation so the pin-1 dot or notch aligns with the silk-screen marker. For high-volume production, add a 1.0 mm keep-out zone around the SSOP body to accommodate the AOI inspection camera and rework nozzles.
Compliance Information
RoHS and REACH status not directly verified in retrieved web snippets; LC and 'T' suffix do not imply lead-free. Not AEC-Q100 qualified - not a typical automotive MCU. For new designs, recommend PIC16F870/871/876A flash-programmed equivalents with confirmed compliance status.
