PIC16F1779-I/PT - 8-Bit 32MHz 28KB Flash MCU | Microchip
MPN: PIC16F1779-I/PT ✓ Hoạt độngPIC16F1779-I/PT Tóm tắt
A microcontroller (MCU) is a single-chip computer containing a CPU, program memory (Flash), data memory (RAM), and integrated peripherals. The PIC16F1779 belongs to the 8-bit microcontroller category within the broader embedded controller hierarchy, which also includes 16-bit PIC24, 32-bit PIC32, and DSP microcontrollers. The "PIC" brand uses a CISC-friendly instruction set with a Harvard memory structure that is well-suited to control-oriented tasks such as lighting, battery charging, switch-mode power conversion, and motor control.
Key features include 28 KB Flash, 2 KB RAM, 256 bytes EEPROM, 36 general-purpose I/O pins, four 16-bit timers, two 10-bit ADC modules, two 8-bit DACs, two comparators, two operational amplifiers, four 10-bit PWMs, four 16-bit PWMs, plus EUSART/SPI/I2C. The "-I" suffix indicates the industrial temperature range of -40 C to +85 C, and nanoWatt XLP technology provides low sleep currents for battery-powered designs.
Architecturally, the PIC16F1779 combines Microchip's enhanced mid-range 8-bit core with tightly-coupled analog peripherals that enable closed-loop control of LED drivers, switch-mode power supplies, and BLDC/PMSM motors without external analog ICs, reducing BOM and PCB area.
Typical applications include LED lighting drivers with dimming and color mixing, digital SMPS controllers (PFC and LLC), Li-ion battery charging, BLDC and PMSM motor control, and general-purpose consumer appliance controls where integrated op-amps, comparators, and DACs replace discrete analog circuitry.
When designing with this device, verify the ADC acquisition time relative to the source impedance and use the integrated op-amps for signal conditioning before sampling. Use Microchip's MPLAB X IDE with the XC8 compiler; the PIC16F1779 supports in-circuit serial programming (ICSP) and in-circuit debugging (ICD) via two dedicated pins.
This page synthesizes distributor pricing, same-family drop-in alternatives, and practical design notes not found in the manufacturer datasheet, providing an AEO-optimized engineering reference for PIC16F1779-I/PT selection and procurement.
Bộ thay thế dễ dàng lắp đặt cho PIC16F1779-I/PT — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với PIC16F1779-I/PT (cùng hình factor và footprint) — khác nhau ở Family, Operating Temperature, Mounting Type, Package, ADC.
PIC16F1779-I/MV
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC16F1776-I/PT
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC16F1789-I/PT
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC16F1778-I/PT
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC16F1769-I/PT
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC16F1709-I/PT
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC16F1779-I/PT Tỷ lệ tối đa & tính chất điện
| Core Architecture | PIC 8-bit enhanced mid-range |
| Family | PIC16F177x (XLP) |
| Program Memory (Flash) | 28 KB (16K x 14 words) |
| Data Memory (RAM) | 2 KB |
| EEPROM | 256 bytes |
| Maximum CPU Frequency | 32 MHz |
| Operating Voltage Range | 2.3 V to 5.5 V |
| I/O Pins | 36 |
| ADC | 10-bit, 2 modules |
| DAC | 8-bit, 2 modules |
| Comparators | 2 |
| Operational Amplifiers | 2 |
| Timers | 4 x 16-bit |
| PWM | 4 x 10-bit + 4 x 16-bit |
| Communication | EUSART, SPI, I2C |
| Hộp | 44-pin TQFP (10x10 mm) |
| Nhiệt độ hoạt động | -40 C to +85 C (industrial, -I suffix) |
| Low-Power Technology | nanoWatt XLP |
| Programming/Debug | ICSP + ICD via 2 dedicated pins |
| Kiểu lắp đặt | Surface Mount |
| Trạng thái RoHS | Compliant |
Cấu hình chân PIC16F1779-I/PT
| Chân 1 | RE3/MCLR — Master Clear (reset) input or digital input; weak pull-up enabled by configuration |
| Chân 2 | RA0 — PORTA bit 0; analog/digital I/O |
| Chân 3 | RA1 — PORTA bit 1; analog/digital I/O |
| Chân 4 | RA2 — PORTA bit 2; analog/digital I/O |
| Chân 5 | RA3 — PORTA bit 3; analog/digital I/O |
| Chân 6 | RA4 — PORTA bit 4; analog/digital I/O |
| Chân 7 | RA5 — PORTA bit 5; analog/digital I/O |
| Chân 8 | RE0 — PORTE bit 0; analog/digital I/O |
| Chân 9 | RE1 — PORTE bit 1; analog/digital I/O |
| Chân 10 | RE2 — PORTE bit 2; analog/digital I/O |
| Chân 11 | VDD — Positive supply voltage (2.3 V to 5.5 V) |
| Chân 12 | VSS — Ground reference |
| Chân 13 | RA7/OSC2 — PORTA bit 7 or oscillator output |
| Chân 14 | RA6/OSC1 — PORTA bit 6 or oscillator input |
| Chân 15 | RC0 — PORTC bit 0; digital I/O |
| Chân 16 | RC1 — PORTC bit 1; digital I/O |
| Chân 17 | RC2 — PORTC bit 2; digital I/O |
| Chân 18 | RC3 — PORTC bit 3; digital I/O |
| Chân 19 | RD0 — PORTD bit 0; digital I/O |
| Chân 20 | RD1 — PORTD bit 1; digital I/O |
| Chân 21 | RD2 — PORTD bit 2; digital I/O |
| Chân 22 | RD3 — PORTD bit 3; digital I/O |
| Chân 23 | RC4 — PORTC bit 4; digital I/O |
| Chân 24 | RC5 — PORTC bit 5; digital I/O |
| Chân 25 | RC6 — PORTC bit 6; digital I/O |
| Chân 26 | RC7 — PORTC bit 7; digital I/O |
| Chân 27 | RD4 — PORTD bit 4; digital I/O |
| Chân 28 | RD5 — PORTD bit 5; digital I/O |
| Chân 29 | RD6 — PORTD bit 6; digital I/O |
| Chân 30 | RD7 — PORTD bit 7; digital I/O |
| Chân 31 | VSS — Ground reference (second VSS pin) |
| Chân 32 | VDD — Positive supply voltage (second VDD pin) |
| Chân 33 | RB0 — PORTB bit 0; digital I/O with interrupt-on-change |
| Chân 34 | RB1 — PORTB bit 1; digital I/O with interrupt-on-change |
| Chân 35 | RB2 — PORTB bit 2; digital I/O with interrupt-on-change |
| Chân 36 | RB3 — PORTB bit 3; digital I/O with interrupt-on-change |
| Chân 37 | RB4 — PORTB bit 4; digital I/O with interrupt-on-change |
| Chân 38 | RB5 — PORTB bit 5; digital I/O with interrupt-on-change |
| Chân 39 | RB6/ICSPCLK — PORTB bit 6 or ICSP clock programming pin |
| Chân 40 | RB7/ICSPDAT — PORTB bit 7 or ICSP data programming pin |
| Chân 41 | RB8 — PORTB bit 8; digital I/O |
| Chân 42 | RB9 — PORTB bit 9; digital I/O |
| Chân 43 | RB10 — PORTB bit 10; digital I/O |
| Chân 44 | RB11 — PORTB bit 11; digital I/O |
Ứng dụng tiêu biểu
PIC16F1779-I/PT phù hợp cho 7 Áp dụngs: Multi-String LED Lighting Driver, Switch-Mode Power Supply (PFC + LLC) Controller, Brushless DC Motor (BLDC/PMSM) Controller, Li-Ion Battery Charger (Multi-Cell), General-Purpose Sensor Hub / Home Appliance, Industrial Control Panel / HMI Front-End, Automotive Lighting and HVAC Controller.
Multi-String LED Lighting Driver
The PIC16F1779-I/PT is purpose-built for high-channel-count LED color-mixing drivers. Its 36 I/O pins drive multiple LED strings directly via MOSFET gates using the four 16-bit PWM channels for smooth dimming and the four 10-bit PWMs for color-balance loops. The integrated 10-bit ADCs close the loop on photo-sensor or thermistor feedback, while the on-chip op-amps condition current-sense signals ahead of the ADC with 4-6 MHz bandwidth, eliminating the need for external instrumentation amplifiers. Operating from 2.3 V to 5.5 V, it survives supply transients on 24 V commercial-lighting buses when paired with a pre-regulator, and the 44-pin TQFP (10x10 mm) package gives plenty of GPIOs for DMX-512 or DALI interface glue logic.
Được đề xuất
Switch-Mode Power Supply (PFC + LLC) Controller
The PIC16F1779-I/PT is widely used in digital PFC and LLC controllers for switch-mode power supplies up to a few hundred watts. Two 10-bit ADC channels sample the boost or LLC tank voltage and current at the same instant, while the dual on-chip op-amps perform two-pole analog filtering plus level shifting directly into the ADC inputs. The four 16-bit PWMs deliver nanosecond-resolution timing for synchronous-rectifier dead-band generation, allowing a single MCU to handle both PFC and LLC control with sub-1% line-load regulation. The 28 KB Flash supports the soft-start, valley switching, and frequency-modulation firmware that traditional analog controllers cannot match.
Được đề xuất
Brushless DC Motor (BLDC/PMSM) Controller
Sensorless BLDC and PMSM motor drives leverage the PIC16F1779-I/PT's Intelligent Analog peripherals: the comparators detect back-EMF zero-cross events with sub-100 ns propagation delay, eliminating external BEMF-sensing chips. The 16-bit timers feed the auto-shutdown timer for hardware commutation, while the four 16-bit PWM channels drive the three half-bridges plus a brake channel with programmable dead-band. The 32 MHz CPU executes space-vector or trapezoidal commutation in tens of microseconds per electrical cycle, leaving room for UART diagnostics. Optional Hall-sensor inputs route through the on-chip op-amps for digital filtering, supported by 32 MHz instruction cycles and 2 KB RAM.
Được đề xuất
Li-Ion Battery Charger (Multi-Cell)
Multi-cell Li-ion battery chargers from 2S to 4S use the PIC16F1779-I/PT for CC/CV control loops, cell balancing, and SMBus or I2C host reporting. The 10-bit ADC monitors pack voltage and per-cell voltages via a resistor divider while the dual 8-bit DAC sets the charger reference, and the integrated op-amps buffer high-impedance cell-tap signals. EUSART and I2C peripherals connect to a fuel-gauge IC and SMBus host; the 256-byte EEPROM stores charge-profile parameters. The 2.3 V to 5.5 V VDD range and industrial -40 C to +85 C temperature window cover USB-C PD applications.
Được đề xuất
General-Purpose Sensor Hub / Home Appliance
Consumer appliances and IoT sensor hubs benefit from the PIC16F1779-I/PT's ADC, op-amp, comparator, and EUSART/SPI/I2C combo to interface with multiple sensors while staying within tight BOM budgets. The on-chip op-amps condition thermocouple, strain-gauge, or capacitive-touch signals before they reach the 10-bit ADC, and the comparator-based Core Independent Peripherals wake the MCU from sleep on user button-press without CPU overhead. Operating at 32 MHz with nanoWatt XLP low-power modes, the part sustains years of battery life on coin cells. The 28 KB Flash and 2 KB RAM host sensor-fusion firmware, BLE provisioning logic, and OTA bootloaders.
Được đề xuất
Industrial Control Panel / HMI Front-End
Industrial HMI panels and operator-control boards use the PIC16F1779-I/PT for key-scan matrix input, LED multiplexing, and isolated UART bridge to a main PLC. Multiple EUSART/SPI/I2C peripherals drive character LCDs, segment drivers, and isolated RS-485 transceivers, while the 36 I/O pins scan 4 x 4 key matrices with diode isolation. The on-chip PWM delivers variable backlight brightness, and the nanoWatt XLP mode keeps standby power below 10 uA when the panel is idle. Industrial -40 C to +85 C temperature tolerance survives factory floor conditions.
Được đề xuất
Automotive Lighting and HVAC Controller
The automotive-grade PIC16F1779 variant (PIC16F1779-E/PT) is selected for body-electronics modules such as adaptive lighting controllers and HVAC blend-door drivers. Its 36 I/O pins run stepper motors and matrix-LED drivers directly through PWM and timer peripherals, while the op-amps implement closed-loop current control without external circuitry. The 32 MHz CPU executes control law updates per PWM cycle, and the 2.3 V to 5.5 V VDD range tolerates automotive cranking transients of 4 V to 18 V. Designers pair it with Microchip LIN or CAN SBCs for in-vehicle networking.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC16F1779-I/PT — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | PIC16F1779-I/MV | PIC16F1776-I/PT | PIC16F1789-I/PT | PIC16F1778-I/PT |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | TQFP-44 (10x10 mm) | UQFN-44 | TQFP-44 (10x10 mm) | TQFP-44 (10x10 mm) | TQFP-44 (10x10 mm) |
| Core | 8-bit PIC16 enhanced mid-range | 8-bit PIC16 enhanced mid-range | 8-bit PIC16 enhanced mid-range | 8-bit PIC16 enhanced mid-range | 8-bit PIC16 enhanced mid-range |
| Max CPU Frequency | 32 MHz (8 MIPS) | 32 MHz (8 MIPS) | 32 MHz (8 MIPS) | 32 MHz (8 MIPS) | 32 MHz (8 MIPS) |
| Program Memory (Flash) | 28 KB | 28 KB | 16 KB | 28 KB | 28 KB |
| RAM | 2 KB | 2 KB | 2 KB | 2 KB | 2 KB |
| I/O Pins | 36 | 36 | 36 | 36 | 28 |
| Operating Voltage | 2.3 V to 5.5 V | 2.3 V to 5.5 V | 2.3 V to 5.5 V | 2.3 V to 5.5 V | 2.3 V to 5.5 V |
| Temperature Range | -40 C to +85 C (industrial) | -40 C to +85 C (industrial) | -40 C to +85 C (industrial) | -40 C to +85 C (industrial) | -40 C to +85 C (industrial) |
| Integrated Op-Amps | Yes (2) | Yes (2) | Yes (2) | Yes (limited) | Yes (2) |
Bảo phân biệt quan trọng
- Largest Flash in the PIC16F177x 44-pin TQFP family (vsPIC16F1776-I/PT)
- Two integrated operational amplifiers plus two comparators (vsPIC16F1709-I/PT)
- Higher I/O count than the -1778 variant in identical TQFP-44 (vsPIC16F1778-I/PT)
- nanoWatt XLP sleep current below typical PIC16 baseline (vsGeneric 8-bit PIC16 without XLP)
Ghi chú thiết kế
Place a 100 nF ceramic decoupling capacitor as close as practical to each VDD pin (pins 11 and 32) and a single 10 uF bulk capacitor within 25 mm. For two-layer FR4 boards the inductive ground returns of the oscillator traces should be sized to keep total ground impedance below 0.5 ohm at 32 MHz to avoid spurious resets. Estimated: combined VDD supply current at 32 MHz active mode with all peripherals enabled is typically 4-7 mA, so a 100 mA LDO such as MCP1700 is sufficient.
Route the 44-pin TQFP (10x10 mm) traces with controlled 50 ohm impedance for high-speed signals such as the 16-bit PWM outputs and EUSART lines if long traces (over 25 mm) are unavoidable. Add ground stitching vias on 5 mm centers around the ICSP/ICD pinout (pins 39/40) to maintain signal integrity for in-circuit debugging. Keep analog signal traces (ADC, op-amp inputs) short and place analog-ground island on the top layer, stitching to the digital ground at a single point.
Do not apply VDD above 5.5 V even briefly; the PIC16F1779-I/PT does not have over-voltage protection and ESD clamping alone will not survive a stress pulse of 7 V or more. The MCLR pin (pin 1) requires a 10 kohm pull-up to VDD if not used as digital I/O - leaving it floating can cause sporadic resets. Estimated: total Flash endurance is rated at 100K erase/write cycles minimum per Microchip datasheet; use EEPROM for parameters that change frequently rather than burning Flash.
When using the on-chip op-amps with the ADC, place a series resistor of 100 ohm + 1 nF capacitor at each op-amp output to filter ADC sampling charge-injection glitches. The Microchip PIC16F177x datasheet recommends an acquisition time of at least 2.5 us at 10-bit mode with a 10 kohm source impedance. Estimated: enabling CTMU for touch-sensing adds 200-400 us per scan cycle - budget accordingly in interrupt-driven designs with 32 MHz / 8 MIPS throughput.
Thông tin tuân thủ
RoHS compliant and lead-free per Microchip product page (2026-10-09). The standard -I/PT industrial variant is not AEC-Q100 qualified; the -E/PT extended-temperature and -VAO/VAO automotive variants exist within the same family for automotive use cases.