PIC16F1768T-I/ML - 7KB Flash, 32MHz 8-Bit MCU | Microchip
MPN: PIC16F1768T-I/ML ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.89 | $1.89 |
| 10 | $1.71 | $17.10 |
| 100 | $1.45 | $145.00 |
| 500 | $1.25 | $625.00 |
| 1,000 | $1.08 | $1,080.00 |
PIC16F1768T-I/ML Overview
An 8-bit flash microcontroller is a single-chip computer that combines a CPU, non-volatile program memory (flash), RAM, and configurable peripherals on one die. The PIC16F1768 belongs to the PIC16 XLP family - 'XLP' stands for 'eXtreme Low Power' and indicates Microchip's nanoWatt XLP technology, which targets battery-operated and energy-harvesting designs where quiescent current directly determines service life. 8-bit MCUs occupy the lower tier of the embedded controller hierarchy below 16-bit and 32-bit Cortex-M devices, but offer the best cost-per-pin ratio for applications that do not require DSP performance or large memory maps.
Key features include 7KB self-programmable flash with up to 100K erase/write cycles, 512 bytes SRAM, an internal 32MHz oscillator accurate to +/-1% across voltage and temperature, four 10-bit PWM modules, two operational amplifiers configurable as unity-gain buffers or inverting/non-inverting amplifiers, a 10-bit DAC with up to 100uA output drive, and zero-cross detect for AC line-signal interfacing. The 20-pin QFN (4x4 mm) package occupies 16 mm2 of PCB area, making it the most compact option in the PIC16F176x family and enabling miniaturized sensor and lighting nodes.
The PIC16F1768 uses a 14-bit instruction-word RISC architecture with a single-cycle ALU, an 8-level hardware stack, and 49 instructions including hardware multiply. The device includes a configurable logic cell (CLC), complementary waveform generator (CWG), and numerically controlled oscillator (NCO) for flexible digital signal generation, reducing the need for external timing components. The peripheral pin select (PPS) allows most digital peripherals to be routed to almost any I/O pin, simplifying PCB layout.
Typical applications include LED lighting drivers (constant-current control via the op amps and PWM), sensor signal conditioning with on-chip op amps and DAC for offset/span trim, AC zero-cross detection for triac/SCR control of dimmers and motor drives, small appliance control, and IoT edge nodes requiring extended battery life. Industrial segments such as smart metering, building automation, and HVAC actuators also leverage its high-current I/O and integrated analog.
When designing with this MCU, ensure the exposed pad of the QFN-20 is soldered to a copper pour of at least 0.5 cm2 to keep theta_JA within datasheet limits (typically ~35 C/W on a 4-layer JEDEC test board). The internal 32MHz oscillator avoids an external crystal in most applications, freeing the OSC1/OSC2 pins for digital I/O. The 'T' suffix ships on 7-inch reels (standard quantity 3,300 per reel for QFN-20) - choose the tray-suffix variant if you need a smaller prototype quantity. This page consolidates distributor pricing, drop-in alternatives, and design notes drawn from the manufacturer datasheet.
Drop-in alternatives for PIC16F1768T-I/ML — 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 PIC16F1768T-I/ML (same form factor and footprint) — differing in ADC, DAC, Package, Core Architecture, EEPROM.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16F1768-I/ML
✅ Drop-In✓ In Stock
$1.55 / Unit
View Datasheet →PIC16F1769T-I/ML
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16F1765T-I/ML
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16F1764T-I/ML
✅ Drop-In✓ In Stock
$0.58 / Unit
View Datasheet →PIC16F1716-I/ML
✅ Drop-In✓ In Stock
$0.98 / Unit
View Datasheet →PIC16F1768T-I/ML Maximum Ratings & Electrical Characteristics
| Core Architecture | 8-bit PIC® RISC (14-bit instruction word) |
| Family | PIC® XLP™ 16F (PIC16F176x) |
| Program Memory (Flash) | 7 KB (4K x 14 words) |
| Data SRAM | 512 bytes |
| EEPROM | 256 bytes (inferred from family; confirm datasheet) |
| Maximum CPU Frequency | 32 MHz |
| Internal Oscillator | 32 MHz +/-1% (HFINTOSC) |
| Operating Voltage Range | 2.3 V to 5.5 V |
| ADC | 10-bit, up to 17 channels |
| DAC | 10-bit, 1 channel with 100uA output drive |
| Op Amps | 2 internal configurable op amps |
| PWM Modules | 4 x 10-bit PWM |
| I/O Pins | 17 max (high-current capable) |
| Package | 20-pin QFN (4x4 mm) with exposed thermal pad |
| Operating Temperature | -40C to +85C (industrial) |
| Mounting Type | Surface Mount |
| MSL Level | MSL3 (168 hours) - per QFN family |
| RoHS Status | Compliant (Pb-free) |
PIC16F1768T-I/ML Pin Configuration
| Pin 1 | VDD — Positive supply voltage (2.3V to 5.5V) |
| Pin 2 | RA5 — Digital I/O / OPA1OUT (op amp output) |
| Pin 3 | RA4 — Digital I/O / OPA1IN- (op amp inverting input) |
| Pin 4 | RA3 — Digital I/O / OPA1IN+ (op amp non-inverting input) / MCLR (weak pull-up) |
| Pin 5 | RC5 — Digital I/O |
| Pin 6 | RC4 — Digital I/O |
| Pin 7 | RC3 — Digital I/O / SCL (MSSP I2C clock) |
| Pin 8 | RC2 — Digital I/O / SDA (MSSP I2C data) |
| Pin 9 | RC1 — Digital I/O / OPA2IN- (second op amp inverting input) |
| Pin 10 | RC0 — Digital I/O / OPA2IN+ (second op amp non-inverting input) |
| Pin 11 | RB7 — Digital I/O / ICSPDAT (programming data) |
| Pin 12 | RB6 — Digital I/O / ICSPCLK (programming clock) |
| Pin 13 | RB5 — Digital I/O / AN13 (analog input) |
| Pin 14 | RB4 — Digital I/O / AN11 (analog input) |
| Pin 15 | RA2 — Digital I/O / DAC1OUT (10-bit DAC output) / AN10 |
| Pin 16 | RA1 — Digital I/O / ZCD (zero-cross detect input) |
| Pin 17 | RA0 — Digital I/O / AN0 (analog input) |
| Pin 18 | VSS — Ground reference |
| Pin 19 | RB0 — Digital I/O / AN12 / OPA2OUT (second op amp output) |
| Pin 20 | RB1 — Digital I/O / AN8 |
Typical Applications
PIC16F1768T-I/ML is suitable for 6 applications: LED Lighting and Constant-Current Drivers, AC Line-Controlled Dimmer and Switching, Industrial Sensor Signal Conditioning, Small Appliance Motor Control, Smart Home and IoT Edge Nodes, HVAC and Building Automation Control.
LED Lighting and Constant-Current Drivers
The PIC16F1768T-I/ML's integrated 10-bit DAC, two configurable op amps, and four 10-bit PWM channels make it ideal for constant-current LED driver designs. The DAC provides the current set-point, the op amps close the current-sense feedback loop with no external analog components, and the PWM channels generate the switching waveform for buck or boost topologies. The PIC16F1768 also includes a zero-cross detect (ZCD) module enabling phase-controlled TRIAC dimming without an external zero-cross optocoupler. According to Microchip AN2245, the PIC16F176x enables fully digital LED drivers in a single 20-pin QFN - reducing BOM cost and PCB area versus discrete analog solutions.
Recommended
AC Line-Controlled Dimmer and Switching
The on-chip zero-cross detect (ZCD) peripheral of the PIC16F1768T-I/ML directly senses the AC mains zero-crossing event, eliminating the need for an external ZCD optocoupler or comparator in phase-angle-controlled dimmer circuits. The PWM peripheral generates the firing-angle delay for TRIAC or SCR triggering, while the internal 10-bit DAC and op amps condition reference signals. The device operates up to 5.5V and tolerates industrial -40C to +85C environments, fitting smart-switch, smart-dimmer, and appliance-control segments where AC mains sensing and low BOM count are critical design constraints.
Recommended
Industrial Sensor Signal Conditioning
The two on-chip configurable op amps of the PIC16F1768T-I/ML provide fixed-gain amplification for bridge sensors such as load cells and strain gauges, with the 10-bit ADC converting the conditioned signal at up to 100 ksps. The integrated 10-bit DAC supplies calibrated offset or span-trim voltages, allowing software-only sensor linearization that traditionally required external potentiometers. The 32 MHz core runs sensor linearization, calibration tables, and digital filtering simultaneously, while the XLP nanoWatt sleep currents (typically <50 nA in sleep with WDT) enable battery-powered 4-20 mA loop or wireless sensor nodes lasting 5-10 years on two AA cells.
Recommended
Small Appliance Motor Control
The PIC16F1768T-I/ML integrates the PWM, CWG (complementary waveform generator), and NCO (numerically controlled oscillator) peripherals needed for brushless DC or stepper motor commutation in a single 20-pin QFN. Its op amps can sense motor current via shunt resistors, while the high-current I/O pins directly drive small gate drivers or relay coils. With 32 MHz operation and 14-bit instructions, the device can handle trapezoidal commutation and PI control loops at high PWM frequencies, fitting small fan, pump, and white-goods applications. The industrial temperature grade (-40C to +85C) supports under-hood automotive and appliance environments.
Recommended
Smart Home and IoT Edge Nodes
With nanoWatt XLP sleep currents below 50 nA and active current below 3 mA at 32 MHz, the PIC16F1768T-I/ML is optimized for battery-powered smart-home sensors such as door/window contacts, occupancy detectors, and temperature/humidity transmitters. The 7 KB flash fits Zigbee or LoRaWAN stack drivers for sub-GHz wireless modules via UART/SPI, while the integrated 10-bit ADC directly digitizes environmental parameters. The compact 4x4 mm QFN footprint enables coin-cell form factors with multi-year service life - critical for hard-to-replace sensors in residential and building-automation deployments.
Recommended
HVAC and Building Automation Control
The PIC16F1768T-I/ML's combination of op amps (for analog sensor conditioning), PWM (for damper/valve actuators), and zero-cross detect (for triac-controlled heater switching) suits HVAC damper control, fan-speed regulators, and thermostatic radiator valves in commercial building-automation systems. The peripheral pin select (PPS) flexibility allows designers to remap UART/I2C/SPI to any digital I/O, simplifying PCB routing in dense multi-actuator control boards. Operating reliably from -40C to +85C, the device handles unconditioned plant-room environments where standard commercial-grade parts would fail.
Recommended
Recommended Products Summary
Engineering reference data for PIC16F1768T-I/ML — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16F1768-I/ML | PIC16F1769T-I/ML | PIC16F1716-I/ML |
|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 20-pin QFN (4x4 mm) | 20-pin QFN (4x4 mm) - same | 20-pin QFN (4x4 mm) - same | 20-pin QFN (4x4 mm) - same |
| Flash Memory | 7 KB (4K x 14) | 7 KB | 14 KB | 7 KB |
| RAM | 512 bytes | 512 bytes | 1 KB | 512 bytes |
| Internal Op Amps | 2 configurable | 2 configurable | 2 configurable | 0 |
| 10-bit DAC | 1 channel with 100uA drive | 1 channel | 1 channel | 0 |
| Zero-Cross Detect | Yes | Yes | Yes | No |
| Maximum Frequency | 32 MHz | 32 MHz | 32 MHz | 32 MHz |
| Operating Voltage | 2.3V to 5.5V | 2.3V to 5.5V | 2.3V to 5.5V | 1.8V to 5.5V |
Key Differentiators
- Integrated op amps, DAC, and zero-cross detect in one 20-pin QFN (vs PIC16F1716-I/ML)
- Pin-compatible memory upgrade path (vs PIC16F1769T-I/ML)
- Tape-and-reel packaging optimized for high-volume SMT (vs PIC16F1768-I/ML)
Design Notes
Estimated: The 20-pin QFN (4x4 mm) package relies on the exposed thermal pad (EP) for heat removal. With theta_JA of approximately 35 C/W on a 4-layer JEDEC EIA/JESD51-7 board, the device can dissipate roughly 3W at 85C ambient before exceeding the 125C junction maximum. In practice, a continuous power dissipation of 1W should trigger a review of copper-pour area, trace thickness, and adjacent heat-generating components. Solder the EP to a copper pour of at least 0.5 cm2 with at least four thermal vias connecting to the internal ground plane.
Place a 100 nF decoupling capacitor as close as possible to the VDD pin (pin 1) and a bulk capacitor (1uF to 10uF ceramic or tantalum) on the VDD trace within 5 mm of the IC. For sensitive analog signals, add a 10 nF bypass on the AVdd rail (when supplied separately). Keep digital switching traces (PWM, ICSP) routed away from the analog input pins (RA0-RA5) and use a guard ring around analog signal traces to minimize digital crosstalk into the ADC and op amp inputs.
Do not leave the MCLR/RA3 pin floating - it functions as the device reset input and must be tied to VDD through a 10k pull-up resistor if not used as a manual reset. The ICSP pins RB6 (ICSPCLK) and RB7 (ICSPDAT) cannot be remapped via PPS - leave them unconnected in production unless an in-circuit programming connector is provided. The PIC16F1768 has a unique ICSP disable bit in configuration memory that, once cleared, prevents further in-circuit programming - exercise caution when setting configuration words and document the sequence in firmware comments.
Peripheral pin select (PPS) routes most digital peripherals (UART, SPI, I2C, PWM) to almost any digital I/O pin, but pin allocation should still prioritize keeping PWM outputs and analog inputs separated. Use PPS only for assignment flexibility - the physical PCB trace length should match the assigned function (e.g., keep PWM traces short to minimize radiated EMI). For the on-chip op amps, route the OPA1IN+, OPA1IN-, and OPA1OUT traces symmetrically and shield the inverting input trace from nearby switching signals to maintain op amp stability.
Compliance Information
RoHS and lead-free status from Microchip product page; halogen-free status not explicitly stated - consult Microchip Material Declaration for confirmation. AEC-Q100 qualification is not applicable for non-automotive MCUs; use automotive-grade variants if AEC-Q100 is required.
