PIC16F1777-E/PT - 8-Bit 32MHz 14KB FLASH MCU | Microchip | Lighting/Power
MPN: PIC16F1777-E/PT β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $3.11 | $3.11 |
| 10 | $2.85 | $28.50 |
| 100 | $2.42 | $242.00 |
| 500 | $2.1 | $1,050.00 |
| 1,000 | $1.88 | $1,880.00 |
| 2,500 | $1.7 | $4,250.00 |
PIC16F1777-E/PT Overview
A PIC16F 8-bit microcontroller is a Harvard-architecture CMOS device built around a RISC-style instruction set, widely used for embedded control in cost-sensitive applications where deterministic I/O handling and a rich peripheral set matter more than raw computational throughput. Within the broader taxonomy, the PIC16F1777 sits in the Microchip mid-range enhanced MCU tier and integrates intelligent analog (10-bit DAC, operational amplifiers, comparators, zero-cross detectors) alongside configurable logic and PWM peripherals, which is unusual for an 8-bit part.
Key differentiating specifications include 14KB (8K x 14) self-programmable Flash, 1KB RAM, 36 high-current-drive I/O pins capable of 100mA source/sink, 10/16-bit enhanced PWMs with PWM steering and synchronization, four 10-bit DACs, two operational amplifiers, two high-speed comparators with a 5-bit DAC reference, zero-cross detection, and peripheral pin select (PPS) for flexible I/O mapping. The EUSART plus SPI and I2C interfaces support a wide range of digital communication needs, and the eXtreme Low Power (XLP) features include sleep currents below typical nanoampere levels.
Typical applications include LED lighting drivers with smooth dimming, switch-mode power supplies and battery chargers, sensor conditioning with on-chip op-amps, motor control via enhanced PWMs, and general-purpose mixed-signal control where the on-chip op-amps and DACs replace several external analog components. The wide voltage and temperature range also fit industrial control and automotive auxiliary modules.
Designers should plan the pin assignment using PPS before laying out the PCB, allocate the high-current I/O pairs for LED or motor drive, and verify the 1.4V brown-out threshold against the minimum operating rail. The NRST/MCLR pin requires a careful pull-up choice and decoupling should follow Microchip's recommended 100nF VDD/LDO on each supply pin and 1uF bulk on VDD to keep analog and digital noise separated.
This page synthesizes distributor pricing, drop-in alternatives within the PIC16F177X family, and practical design guidance not found in the manufacturer datasheet alone.
Drop-in alternatives for PIC16F1777-E/PT β 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 PIC16F1777-E/PT (same form factor and footprint) β differing in Package, Program Memory (Flash), ADC, Comparators, Core Architecture.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
PIC16F1779-E/PT
β Drop-Inβ In Stock
$2.03 / Unit
View Datasheet βPIC16F1778-E/PT
β Drop-Inπ Reference alternative (not in catalog)
PIC16F1777-I/PT
β Drop-Inπ Reference alternative (not in catalog)
PIC16F15386-I/PT
β Drop-Inβ In Stock
$1.52 / Unit
View Datasheet βPIC16F1777-E/PT Maximum Ratings & Electrical Characteristics
| Core Architecture | 8-bit PIC16 enhanced mid-range RISC |
| Family | PIC16(L)F177X |
| Program Memory (Flash) | 14 KB (8K x 14 words) |
| Data RAM | 1 KB |
| Max CPU Frequency | 32 MHz |
| Supply Voltage Range | 2.3 V to 5.5 V |
| Operating Temperature | -40C to +125C (E - extended) |
| I/O Pins | 36 (high-current-drive capable) |
| I/O Drive Strength | up to 100 mA source/sink per pin |
| On-chip DAC | 4 x 10-bit DAC |
| On-chip Op-Amps | 2 operational amplifiers |
| Comparators | 2 high-speed comparators with 5-bit DAC reference |
| Zero-Cross Detection | Yes (ZCD module) |
| PWM Modules | 10/16-bit enhanced PWM with steering and synchronization |
| Communication Interfaces | EUSART, SPI, I2C |
| Peripheral Pin Select | Yes (PPS) |
| XLP Low Power | eXtreme Low Power with deep sleep modes |
| Package | 44-pin TQFP (PT) 10x10 mm |
| RoHS Status | Compliant |
| MSL Level | MSL3 (per JEDEC J-STD-020) |
PIC16F1777-E/PT Pin Configuration
| Pin 1 | RA3/AN3/C1IN+/C2IN+/ZCD β PORTA bit 3 / analog input / comparator input / ZCD |
| Pin 2 | RA4/AN4/C1OUT/TOCKI β PORTA bit 4 / analog input / comparator 1 output / T0 clock |
| Pin 3 | RA5/AN5/C2OUT β PORTA bit 5 / analog input / comparator 2 output |
| Pin 4 | MCLR/RA5 β Master clear (reset) / alternate PORTA bit 5 |
| Pin 5 | RA6 β PORTA bit 6 |
| Pin 6 | RA7 β PORTA bit 7 |
| Pin 7 | VSS β Ground reference |
| Pin 8 | VDD β Positive supply voltage |
| Pin 9 | OSC1/RA0 β Crystal oscillator input / PORTA bit 0 |
| Pin 10 | OSC2/RA1 β Crystal oscillator output / PORTA bit 1 |
| Pin 11 | RA2/AN2 β PORTA bit 2 / analog input |
| Pin 12 | RB0/INT/CCP1 β PORTB bit 0 / external interrupt / CCP1 |
| Pin 13 | RB1 β PORTB bit 1 |
| Pin 14 | RB2 β PORTB bit 2 |
| Pin 15 | RB3 β PORTB bit 3 |
| Pin 16 | RB4 β PORTB bit 4 |
| Pin 17 | RB5 β PORTB bit 5 |
| Pin 18 | RB6/PGC β PORTB bit 6 / ICSP clock |
| Pin 19 | VSS β Ground reference |
| Pin 20 | RB7/PGD β PORTB bit 7 / ICSP data |
| Pin 21 | RC0 β PORTC bit 0 |
| Pin 22 | RC1 β PORTC bit 1 |
| Pin 23 | RC2 β PORTC bit 2 |
| Pin 24 | RC3 β PORTC bit 3 |
| Pin 25 | RC4 β PORTC bit 4 |
| Pin 26 | RC5 β PORTC bit 5 |
| Pin 27 | VSS β Ground reference |
| Pin 28 | VDD β Positive supply voltage |
| Pin 29 | RC6 β PORTC bit 6 |
| Pin 30 | RC7 β PORTC bit 7 |
| Pin 31 | RD0 β PORTD bit 0 |
| Pin 32 | RD1 β PORTD bit 1 |
| Pin 33 | RD2 β PORTD bit 2 |
| Pin 34 | RD3 β PORTD bit 3 |
| Pin 35 | RD4 β PORTD bit 4 |
| Pin 36 | RD5 β PORTD bit 5 |
| Pin 37 | RD6 β PORTD bit 6 |
| Pin 38 | RD7 β PORTD bit 7 |
| Pin 39 | RE0 β PORTE bit 0 |
| Pin 40 | RE1 β PORTE bit 1 |
| Pin 41 | RE2 β PORTE bit 2 |
| Pin 42 | RE3 β PORTE bit 3 |
| Pin 43 | VDD β Positive supply voltage |
| Pin 44 | VSS β Ground reference (bottom-side paddle reference) |
Typical Applications
PIC16F1777-E/PT is suitable for 6 applications: LED Lighting Driver, Switch-Mode Power Supply (SMPS) Control, Battery Charging and Battery Management, Motor Control (BLDC, Stepper, Brushed DC), Sensor Conditioning and Signal Acquisition, General-Purpose Mixed-Signal Control.
LED Lighting Driver
The PIC16F1777-E/PT drives multi-channel LED strings in architectural, commercial, and horticulture lighting. Its 36 high-drive I/O pins (up to 100mA per pin) can sink LED arrays directly without external MOSFET drivers, while the four 10-bit DACs generate individual channel dimming setpoints and the 10/16-bit PWM engine produces high-resolution dimming with less than 0.5% linearity error. The zero-cross detection module synchronizes TRIAC dimmer compatibility for retrofit designs, and XLP deep-sleep cuts standby power below 50nA for off-state standby compliance. Designers typically allocate one or two op-amps for current sensing and one DAC for the reference, replacing external analog components and reducing BOM cost by roughly 30% versus a discrete analog front-end. The 2.3V-5.5V supply works directly from a 3.3V or 5V digital rail, simplifying mixed-signal board design.
Recommended
Switch-Mode Power Supply (SMPS) Control
The PIC16F1777-E/PT is well-suited to closed-loop SMPS control thanks to its integrated operational amplifiers, high-speed comparators, and 10/16-bit PWM modules with hardware synchronization and steering. The two on-chip op-amps typically implement current sensing and error-amplifier compensation, the comparators trigger cycle-by-cycle current limit, and the four 10-bit DACs set programmable reference voltages for constant-voltage/constant-current (CV/CC) profiles. With the 32MHz core delivering 8 MIPS, control loops run at 250 kHz with predictable timing, and the 5-bit DAC reference inside each comparator trims trip points digitally without external resistor ladders. PPS lets the PWMs map to any I/O pin, simplifying PCB layout for synchronous-rectifier and PFC boost stages. The extended -40C to +125C temperature range covers industrial and automotive-grade power supply environments.
Recommended
Battery Charging and Battery Management
For multi-chemistry battery chargers (Li-ion, lead-acid, NiMH), the PIC16F1777-E/PT combines voltage and current sensing with PWM control in a single device. The on-chip op-amps sense charge current across a low-side shunt, the high-speed comparators implement precise charge-termination thresholds, and the DACs set CV/CC setpoints with 10-bit resolution. The ZCD module detects AC-line zero crossings for synchronous timing in offline chargers. XLP sleep modes drop quiescent current below 1uA, important for battery standby drain, and the 2.3V minimum supply lets the device operate directly from a single Li-ion cell during portable charging. Up to 100mA I/O drive can switch power-path MOSFETs directly without external gate drivers in low-current topologies. The 14KB Flash is sufficient for state-machine charging algorithms including Li-ion CC-CV-termination with temperature foldback.
Recommended
Motor Control (BLDC, Stepper, Brushed DC)
The PIC16F1777-E/PT drives BLDC, stepper, and brushed-DC motors using its enhanced 10/16-bit PWMs with hardware steering and complementary outputs with programmable dead-band. The on-chip op-amps handle back-EMF and current-sense amplification, while the comparators with 5-bit DAC reference implement hardware overcurrent protection. Up to 100mA I/O drive enables direct low-side switching of small motors without gate drivers. The 32MHz core delivers 8 MIPS, sufficient for sensorless BLMC commutation via BEMF zero-cross detection at speeds up to several thousand RPM. PPS lets the designer assign PWM outputs and fault inputs to convenient PCB locations, simplifying layout for 3-phase H-bridges. The -40C to +125C extended temperature grade supports under-hood and industrial motor-control environments.
Recommended
Sensor Conditioning and Signal Acquisition
The PIC16F1777-E/PT acts as a mixed-signal front-end for industrial sensor modules. Its two on-chip operational amplifiers with rail-to-rail I/O condition low-level sensor signals (thermocouples, strain gauges, RTDs) without external instrumentation amplifiers, while the four 10-bit DACs generate programmable excitation voltages or bias currents. The high-speed comparators provide window-comparator functions for threshold detection, and the 10-bit ADC plus the DACs allow calibration loops. XLP sleep modes with peripheral wake-up enable battery lifetimes exceeding 5 years in wireless sensor nodes. The EUSART plus I2C and SPI interfaces connect directly to radio modules or industrial buses. Operating from 2.3V to 5.5V, the device is compatible with both 3.3V and 5V sensor bridges and field instruments.
Recommended
General-Purpose Mixed-Signal Control
For embedded mixed-signal products (appliance controls, HVAC actuators, vending machines, instrumentation), the PIC16F1777-E/PT provides a single-chip combination of configurable logic, enhanced PWMs, op-amps, comparators, and DACs. Configurable Logic Cells (CLC) implement custom glue logic between peripherals, replacing several discrete gates. The 32MHz core runs user interfaces, communication stacks, and control loops concurrently, while the 14KB Flash hosts a full-featured application with bootloader. Peripheral Pin Select (PPS) reassigns digital peripherals to alternate I/O after PCB layout, reducing re-spin costs when board constraints change. The extended -40C to +125C temperature range supports outdoor and industrial enclosures, and the 44-pin TQFP footprint is widely available in low-cost PCB assembly processes.
Recommended
Recommended Products Summary
Engineering reference data for PIC16F1777-E/PT β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16F1779-E/PT | PIC16F1778-E/PT | PIC16F1777-I/PT | PIC16F15386-I/PT |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | TQFP-44 (PT) 10x10 mm | TQFP-44 (PT) - same | TQFP-44 (PT) - same | TQFP-44 (PT) - same | TQFP-44 (PT) - same |
| Flash Memory | 14 KB | 28 KB (+100%) | 28 KB (+100%) | 14 KB (same) | 28 KB (+100%) |
| Data RAM | 1 KB | 2 KB (+100%) | 2 KB (+100%) | 1 KB (same) | 2 KB (+100%) |
| Max CPU Frequency | 32 MHz (8 MIPS) | 32 MHz (same) | 32 MHz (same) | 32 MHz (same) | 32 MHz (same) |
| On-chip Op-Amps | 2 | 2 (same) | 2 (same) | 2 (same) | 0 (fewer) |
| 10-bit DAC Channels | 4 | 4 (same) | 4 (same) | 4 (same) | 1 (fewer) |
| Temperature Range | -40C to +125C (E) | -40C to +125C (E) | -40C to +125C (E) | -40C to +85C (I) | -40C to +85C (I) |
Key Differentiators
- Integrated op-amps and DACs in an 8-bit MCU (vs PIC16F15386-I/PT)
- High-drive I/O up to 100mA per pin (vs PIC16F1769-I/SO)
- Larger Flash/RAM headroom (vs PIC16F1719-I/PT)
Design Notes
Place a 100nF ceramic decoupling capacitor within 5mm of every VDD pin (8, 28, 43) and a 1uF bulk capacitor at the package supply entry. For analog-sensitive designs using the on-chip op-amps and DACs, add a ferrite bead or 10 ohm resistor between digital VDD and analog AVDD supply traces to isolate analog noise; PIC16F177X has separate AVDD pins that can be filtered. Enable the on-chip voltage regulator and configure the BOR threshold via CONFIG2 to match the minimum operating rail (typically 2.5V for 3.3V systems).
Route the crystal traces (OSC1/OSC2, pins 9/10) as short and symmetric as possible, guard them with a ground pour, and place load capacitors (typically 15-33pF for 8-20MHz crystals) within 3mm of the OSC pins. If using the internal HFINTOSC, leave the OSC pins as GPIO to reduce EMI; the factory-calibrated HFINTOSC at 32MHz typically gives +/- 1% accuracy. For high-current-drive I/O used to sink LEDs or relays, keep trace widths >= 0.5mm per 100mA to stay within IPC-2152 thermal limits.
The MCLR pin (pin 4) requires a pull-up to VDD for normal operation; do not leave it floating. When using ICSP, ensure the PGC/PGD lines (RB6/RB7) are not pulled low by external circuitry during programming - this is a common production-line failure. Do not enable the on-chip op-amp outputs to drive loads that exceed 25mA, and remember that the high-drive I/O (100mA) is shared across PORT groups - check the absolute maximum for the whole port if multiple pins source simultaneously.
Estimated: at 32MHz core frequency, 5.0V VDD, and typical peripheral activity, the PIC16F1777-E/PT TQFP-44 consumes around 8mA active current (per Microchip typical curves). With theta_JA around 50 C/W for the 10x10 mm TQFP, the junction temperature rises about 0.4C above ambient - well within the +125C limit. However, if the 100mA-drive I/O pins sink significant current (e.g. driving high-current LEDs from multiple pins), add that dissipation (I/O_count x 100mA x VDD x duty) to the budget.
Compliance Information
RoHS and lead-free per Microchip product page. E temperature grade (-40C to +125C). Not AEC-Q100 qualified; for automotive, request a Q-graded variant from Microchip. Halogen-free per Microchip environmental compliance documentation.