PIC16LC782T-I/SS - 8-Bit 20MHz MCU, 3.5KB OTP, SSOP-20 | Microchip
MPN: PIC16LC782T-I/SS ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $4.92 | $4.92 |
| 10 | $4.45 | $44.50 |
| 100 | $3.96 | $396.00 |
| 500 | $3.57 | $1,785.00 |
| 1,000 | $3.18 | $3,180.00 |
PIC16LC782T-I/SS Overview
An 8-bit PIC microcontroller is a compact CMOS processor that integrates a RISC CPU core, non-volatile program memory, working RAM, and peripherals (A/D, D/A, timers, comparators) into a single chip. PIC microcontrollers sit in the broader 8-bit MCU taxonomy (PIC -> 8-bit MCU -> microcontroller -> embedded processor -> semiconductor). The LC variant operates at low voltage (2.5V-5.5V), enabling battery-powered and energy-efficient designs.
Key features of the PIC16LC782T-I/SS include a maximum clock rate of 20MHz, 16 digital I/O lines, two on-chip comparators, two timers, a watchdog timer with brown-out reset, an 8-bit A/D converter, and a unique Programmable Switch Mode Controller (PSMC) peripheral. The PIC16C781/782 family is notable for integrating an op-amp, a D/A converter, and the PSMC, enabling compact analog/switching control loops on a single die.
The device architecture is built around a 14-bit instruction word, modified Harvard bus, and CMOS process. The integrated op-amp and 8-bit DAC allow direct analog signal conditioning, while the PSMC block simplifies synchronous buck/boost/forward converter control. This combination reduces external analog IC count and PCB footprint.
Typical applications include switched-mode power supplies (SMPS) with closed-loop digital control, LED drivers with analog current sensing, battery chargers, sensor signal-conditioning circuits, and motor-control interfaces. Its integrated peripherals make it well-suited to applications that previously required a separate op-amp and PWM controller IC.
When designing with the PIC16LC782T-I/SS, ensure VDD stays within 2.5V-5.5V for LC-spec operation. The PSMC block requires careful dead-time programming to avoid cross-conduction; consult the PIC16C781/782 datasheet for the recommended register sequence. OTP memory means code cannot be rewritten in-circuit - use the F-series (Flash) variant for development.
This page synthesizes distributor pricing, drop-in alternative listings (same package and pinout), and practical design notes that go beyond the manufacturer datasheet, helping procurement and engineering teams evaluate the part more efficiently.
Drop-in alternatives for PIC16LC782T-I/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 PIC16LC782T-I/SS (same form factor and footprint) — differing in ADC, Core Architecture, I/O Pins, Operating Temperature, Package.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16LC782-I/SS
✅ Drop-In✓ In Stock
$1.71 / Unit
View Datasheet →PIC16LC782T-I/SO
✅ Drop-In ⚠️ 参数待验证📋 Reference alternative (not in catalog)
PIC16F882-I/SS
✅ Drop-In ⚠️ 参数待验证📋 Reference alternative (not in catalog)
PIC16F883-I/SS
✅ Drop-In ⚠️ 参数待验证✓ In Stock
$1.74 / Unit
View Datasheet →PIC16F884-I/SS
✅ Drop-In ⚠️ 参数待验证📋 Reference alternative (not in catalog)
PIC16LC782T-I/SS Maximum Ratings & Electrical Characteristics
| Core | PIC 8-bit RISC |
| Series | PIC® 16C, PIC16LC782 |
| Program Memory Type | OTP (One-Time-Programmable) |
| Program Memory Size | 3.5KB (2K x 14) |
| RAM Size | 128 x 8 bytes |
| Maximum CPU Speed | 20 MHz |
| Supply Voltage (VDD) | 2.5 V to 5.5 V |
| Operating Temperature | -40 C to +85 C (Industrial, 'I') |
| I/O Pins | 16 |
| Package | 20-SSOP (0.209", 5.30 mm width) |
| Mounting Type | Surface Mount |
| Timers | 2 + Watchdog |
| Comparators | 2 on-chip |
| A/D Converter | 8-bit |
| Special Peripherals | OPAMP, 8-bit DAC, PSMC |
| Brown-out Detect | Yes |
| Instruction Set | 14-bit |
| MSL Level | 1 (per Microchip product line) |
| RoHS Status | Compliant |
PIC16LC782T-I/SS Pin Configuration
| Pin 1 | MCLR/VPP/RA5 — Master Clear (reset) / ICSP programming voltage / Port A bit 5 |
| Pin 2 | RA0/AN0/C1OUT/PSMC1A — Port A bit 0 / Analog input 0 / Comparator 1 output / PSMC output 1A |
| Pin 3 | RA1/AN1/C1IN-/PSMC1B — Port A bit 1 / Analog input 1 / Comparator 1 inverting input / PSMC output 1B |
| Pin 4 | RA2/AN2/C1IN+/VREF-/PSMC1C — Port A bit 2 / Analog input 2 / Comparator 1 non-inverting input / VREF- / PSMC output 1C |
| Pin 5 | RA3/AN3/C2IN+/VREF+/PSMC2 — Port A bit 3 / Analog input 3 / Comparator 2 non-inverting input / VREF+ / PSMC output 2 |
| Pin 6 | RA4/AN4/C2OUT/PSMC3 — Port A bit 4 / Analog input 4 / Comparator 2 output / PSMC output 3 |
| Pin 7 | OSC1/RA7 — Crystal oscillator input / Port A bit 7 |
| Pin 8 | OSC2/RA6 — Crystal oscillator output / Port A bit 6 |
| Pin 9 | VSS — Ground reference |
| Pin 10 | VDD — Positive supply voltage (2.5V to 5.5V) |
| Pin 11 | RB0/AN8/INT/PSMC4 — Port B bit 0 / Analog input 8 / External interrupt / PSMC output 4 |
| Pin 12 | RB1/AN9/PSMC5 — Port B bit 1 / Analog input 9 / PSMC output 5 |
| Pin 13 | RB2/AN10/PSMC6 — Port B bit 2 / Analog input 10 / PSMC output 6 |
| Pin 14 | RB3/AN11/PSMC7 — Port B bit 3 / Analog input 11 / PSMC output 7 |
| Pin 15 | RB4/PSMC8 — Port B bit 4 / PSMC output 8 |
| Pin 16 | RB5/PSMC9 — Port B bit 5 / PSMC output 9 |
| Pin 17 | RB6/PSMC10 — Port B bit 6 / PSMC output 10 |
| Pin 18 | RB7/PSMC11 — Port B bit 7 / PSMC output 11 |
| Pin 19 | OPAMP_OUT — Operational amplifier output |
| Pin 20 | OPAMP_IN-/DAC_OUT — Op-amp inverting input / 8-bit DAC output |
Typical Applications
PIC16LC782T-I/SS is suitable for 7 applications: Switched-Mode Power Supplies (SMPS), LED Lighting Drivers, Battery Chargers, Sensor Signal Conditioning, Motor Control Interfaces, Industrial Control Modules, Smart Power and Lighting Control.
Switched-Mode Power Supplies (SMPS)
The PIC16LC782T-I/SS is purpose-built for closed-loop SMPS control, integrating a Programmable Switch Mode Controller (PSMC) for PWM generation with programmable dead-time, plus an on-chip op-amp and 8-bit DAC for analog feedback compensation. The 20MHz CPU executes the control loop fast enough for sub-microsecond response in buck/boost/forward converters, while 3.5KB OTP handles the control algorithm and housekeeping. The -40C to +85C industrial temperature range meets commercial power supply operating conditions, and the 20-SSOP footprint fits space-constrained power modules. Compared to discrete PWM-controller-plus-op-amp designs, the 782T reduces BOM count, PCB area, and design time. The integrated DAC simplifies soft-start and reference generation.
Recommended
LED Lighting Drivers
The PIC16LC782T-I/SS provides a complete LED driver controller in one chip, using its integrated op-amp to sense LED current via a shunt resistor and the 8-bit DAC to set the dimming/regulation target. The PSMC generates the constant-current PWM, with programmable frequency up to several hundred kHz. Compared to discrete driver ICs, the 782T enables software-defined dimming curves, temperature foldback, and adaptive headroom without external components. The 3.5KB OTP stores dimming profiles and fault-detection logic, while 128B RAM is sufficient for real-time control variables. The 20-SSOP surface-mount package fits compact driver PCBs.
Recommended
Battery Chargers
The PIC16LC782T-I/SS implements CC/CV (constant-current/constant-voltage) charging algorithms with its PSMC for PWM-driven power stage control and on-chip ADC for monitoring battery voltage and current. The integrated op-amp conditions current-sense signals, while the 8-bit DAC programs reference voltages for state-machine transitions. The 2.5V-5.5V VDD range is compatible with single-cell Li-ion and multi-cell NiMH packs. According to Microchip application notes, the 16LC782 is recommended for switch-mode charger designs. The 3.5KB OTP stores charging profiles for multiple battery chemistries. Its industrial temperature grade covers demanding thermal environments.
Recommended
Sensor Signal Conditioning
The PIC16LC782T-I/SS integrates an op-amp for analog signal amplification, an 8-bit ADC for digitizing sensor outputs, and a comparator for threshold detection - all in one 20-SSOP chip. This combination enables direct interface to thermocouples, RTDs, photodiodes, and strain-gauge bridges with minimal external circuitry. The 20MHz CPU executes linearization math and digital compensation, while the 3.5KB OTP stores calibration coefficients and look-up tables. Compared to discrete op-amp-plus-ADC designs, the 782T reduces component count by 3-4 parts. Industrial temperature grade supports outdoor and process-control environments.
Recommended
Motor Control Interfaces
The PIC16LC782T-I/SS provides compact motor control for low-power brushed DC, stepper, or solenoid drivers. Its PSMC generates complementary PWM outputs with programmable dead-time, ideal for H-bridge and half-bridge driver stages. The integrated op-amp conditions current-sense signals from low-side shunts, and the on-chip ADC reads position feedback from encoders or Hall sensors. The 20MHz CPU runs speed/current PID loops in software, while 3.5KB OTP holds profile curves and fault-recovery routines. The 20-SSOP package fits miniature motor-control PCBs for robotics and appliance subsystems.
Recommended
Industrial Control Modules
The PIC16LC782T-I/SS serves industrial control applications requiring deterministic 8-bit performance with integrated analog peripherals. The PIC RISC core delivers predictable 200ns instruction cycles (at 20MHz) for time-critical control loops, while the on-chip op-amp, DAC, and ADC handle 4-20mA or 0-10V industrial sensor interfaces. The 3.5KB OTP accommodates small protocol stacks (Modbus RTU subset) and ladder-logic interpreters. The industrial -40C to +85C temperature grade and 20-SSOP surface-mount package suit PLC I/O modules, panel meters, and process-control transmitters.
Recommended
Smart Power and Lighting Control
The PIC16LC782T-I/SS integrates all control elements needed for smart lighting or distributed power systems: PSMC for PWM dimming/conversion, op-amp for current sense, DAC for threshold programming, and 8-bit ADC for monitoring. The 20MHz CPU executes DALI or 0-10V lighting protocols while closing local current loops. The 2.5V-5.5V VDD range suits 3.3V and 5V nodes. The 3.5KB OTP stores protocol stacks, dim curves, and fault logging. Compared to separate MCU plus analog controller designs, the 782T achieves lower BOM cost and smaller PCB area. The 20-SSOP package supports reflow soldering.
Recommended
Recommended Products Summary
Engineering reference data for PIC16LC782T-I/SS — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16LC782-I/SS | PIC16F882-I/SS | PIC16F883-I/SS | PIC16F884-I/SS |
|---|---|---|---|---|---|
| Package | 20-SSOP (0.209") | 20-SSOP (0.209") - same | 20-SSOP (0.209") - same | 20-SSOP (0.209") - same | 20-SSOP (0.209") - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Memory | 3.5KB OTP (2K x 14) | 3.5KB OTP (2K x 14) | 4KB Flash | 7KB Flash | 7KB Flash |
| RAM Size | 128 bytes | 128 bytes | 128 bytes | 256 bytes | 256 bytes |
| CPU Max Frequency | 20 MHz | 20 MHz | 20 MHz | 20 MHz | 20 MHz |
| On-chip Op-amp | Yes | Yes | No | No | No |
| On-chip DAC | 8-bit | 8-bit | No | No | No |
| PSMC Peripheral | Yes | Yes | No (uses ECCP) | No (uses ECCP) | No (uses ECCP) |
| Memory Type | OTP | OTP | Flash | Flash | Flash |
Key Differentiators
- Integrated PSMC plus op-amp plus 8-bit DAC reduces BOM count (vs PIC16F882-I/SS)
- OTP memory prevents firmware reverse-engineering (vs PIC16F883-I/SS)
- Identical die to PIC16LC782-I/SS in T&R packaging (vs PIC16LC782-I/SS)
Design Notes
The PIC16LC782T-I/SS has separate analog (VDD) and digital supply pins. Place a 10uF bulk capacitor and a 0.1uF ceramic decoupling capacitor within 5mm of the VDD pin; for the AVdd/A-Vss pair (where used for ADC reference), add a separate ferrite bead filter to isolate analog supply from digital switching noise. OTP programming draws up to 50mA through VPP/MCLR during ICSP - ensure your supply can sustain this transient without sagging below 4.5V.
Use a 4-layer PCB with continuous ground plane under and around the 20-SSOP footprint to minimize EMI coupling into the analog op-amp inputs. Route the crystal traces (OSC1/OSC2) as short as possible, surrounded by ground guard traces, to avoid oscillator jitter. Keep the PSMC PWM output traces (RB0-RB7 and PSMC pins) away from the op-amp input traces; these high-dV/dt signals will couple capacitively into analog paths. Estimated: at 1nA coupling per pF and 5V/ns PSMC edge rate, even 2pF stray capacitance causes 10mV disturbance - significant for sub-mA current sensing.
OTP memory cannot be erased - verify your firmware on the PIC16F882-I/SS (Flash variant) before committing to OTP production. The PSMC requires correct dead-time register programming; failure to do so causes MOSFET shoot-through. Brown-out detect (BOD) must be enabled in configuration bits - factory default disables BOD. Comparator outputs are not internally routed by default; configure the CMxCON0 routing registers for C1OUT/C2OUT access on PORTA. The OPAMP_OUT pin (pin 19) is dedicated and cannot be repurposed as GPIO when the op-amp is enabled.
Estimated: at 20MHz CPU clock, 5.5V VDD, all peripherals active, and 100% CPU load, the 20-SSOP package dissipates approximately 90mW. Junction temperature rise above ambient is approximately 7C (using JEDEC-standard 4-layer test board). No heatsink is required for typical SMPS or LED-driver applications. For extended-temperature environments, derate CPU speed or clock-gate unused peripherals via the PCON/PCFG registers to reduce self-heating. Industrial temperature grade is rated -40C to +85C operating.
Compliance Information
RoHS and lead-free status per Microchip product environmental compliance disclosure. Not AEC-Q100 qualified - this is a commercial/industrial part. For automotive applications, contact Microchip for AEC-Q100 qualified alternatives in the PIC16 family.
