PIC16LF1578T-I/GZ - 8-bit MCU, 7KB Flash, 4x16-bit PWM | Microchip
MPN: PIC16LF1578T-I/GZ ✓ Hoạt độngPIC16LF1578T-I/GZ Tóm tắt
A PIC microcontroller is a Harvard-architecture 8-bit RISC MCU widely used in embedded control. The PIC16F1 mid-range family adds Core Independent Peripherals such as Configurable Logic Cells, Numerically Controlled Oscillators, and Complementary Waveform Generators, which let peripherals operate without CPU intervention. The PIC16LF1578T-I/GZ specifically delivers four 16-bit PWMs with independent timers, 10-bit ADC with computation, and 4-bit high-speed comparator, suiting applications requiring high-resolution PWM or analog signal conditioning in tight form factors.
Key features include 7KB Flash, 512B RAM, 4x 16-bit PWM channels, 10-bit ADC, 4-bit DAC/comparator, 17 I/O pins, and Core Independent Peripherals (CIPs). The integrated Complementary Waveform Generator (CWG) supports dead-band control for switching power stages, reducing BOM cost and PCB area. The 32 MHz internal oscillator eliminates external crystals for many designs, while low-power Sleep modes (typical <50 nA) suit battery-operated sensor nodes.
Typical applications include high-density LED lighting drivers, DC-DC converter control loops, stepper motor drivers, switched-mode power supply controllers, and general-purpose analog signal conditioning. The four 16-bit PWM channels are ideal for full-bridge and 3-phase half-bridge topologies commonly used in lighting and motor control.
When designing with this device, verify your toolchain supports the PIC16F1 enhanced mid-range core. Older PIC16F baseline tools may not generate compatible code; use MPLAB X IDE with XC8 compiler targeting -mcpu=16f1578.
Bộ thay thế dễ dàng lắp đặt cho PIC16LF1578T-I/GZ — 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 PIC16LF1578T-I/GZ (cùng hình factor và footprint) — khác nhau ở Package, ADC, Program Memory (Flash), Comparators, Data SRAM.
PIC16F1578T-I/GZ
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| Architecture | PIC16F1 Enhanced Mid-range 8-bit RISC |
| Program Memory (Flash) | 7 KB (4K x 14 words) |
| Data SRAM | 512 bytes |
| Maximum CPU Speed | 32 MHz |
| Operating Voltage Range | 1.8 V to 3.6 V |
| I/O Pins | 17 |
| PWM Channels | 4 x 16-bit with independent timers |
| ADC | 10-bit |
| Comparators | 4-bit (high-speed) |
| Complementary Waveform Generator (CWG) | Yes |
| Hộp | 20-pin UQFN (4x4 mm) exposed pad |
| Kiểu lắp đặt | Surface Mount |
| Temperature Grade | Industrial -40C to +85C |
| Trạng thái RoHS | Compliant |
| Lead-Free | Yes |
Cấu hình chân PIC16LF1578T-I/GZ
| Chân 1 | RA5 — Bidirectional I/O, ICSPCLK |
| Chân 2 | RA4 — Bidirectional I/O |
| Chân 3 | RA3 — Bidirectional I/O, MCLR/Vpp |
| Chân 4 | RC5 — Bidirectional I/O |
| Chân 5 | RC4 — Bidirectional I/O |
| Chân 6 | RC3 — Bidirectional I/O |
| Chân 7 | RC2 — Bidirectional I/O |
| Chân 8 | RC1 — Bidirectional I/O, ICSPDAT |
| Chân 9 | RC0 — Bidirectional I/O |
| Chân 10 | VSS — Ground reference |
| Chân 11 | RA2 — Bidirectional I/O |
| Chân 12 | RA1 — Bidirectional I/O, ICSPCLK alt |
| Chân 13 | RA0 — Bidirectional I/O, ICSPDAT alt |
| Chân 14 | VSS — Ground reference |
| Chân 15 | VDD — Positive supply voltage (1.8V-3.6V) |
| Chân 16 | RA7 — Bidirectional I/O, OSC1 |
| Chân 17 | RA6 — Bidirectional I/O, OSC2 |
| Chân 18 | RC7 — Bidirectional I/O |
| Chân 19 | RC6 — Bidirectional I/O |
| Chân 20 | EP — Exposed thermal pad, connect to VSS |
Ứng dụng tiêu biểu
PIC16LF1578T-I/GZ phù hợp cho 6 Áp dụngs: High-Resolution LED Lighting Drivers, DC-DC Converter and SMPS Control Loops, Stepper Motor and BLDC Drivers, Battery-Powered IoT Sensor Nodes, Industrial Control and Automation, Consumer Electronics and Toys.
High-Resolution LED Lighting Drivers
The PIC16LF1578T-I/GZ is well-suited for high-density LED lighting applications due to its four independent 16-bit PWM channels with 65536-step resolution per LED string. Each PWM can drive RGBW channels for tunable white and full-color mixing with sub-1uA dimming granularity, while the Complementary Waveform Generator (CWG) handles dead-band timing for buck/boost LED driver stages. The 32 MHz CPU and 17 I/O pins support DMX-512, DALI, or 0-10V control interfaces in a single chip. Operating from 1.8V-3.6V, the part fits directly into battery-backed emergency lighting and low-voltage architectural fixtures.
Được đề xuất
DC-DC Converter and SMPS Control Loops
The PIC16LF1578T-I/GZ controls switched-mode power supplies (SMPS) via its four 16-bit PWMs and high-speed 4-bit comparator for peak current-mode control. The CWG module generates complementary MOSFET drive signals with programmable dead-band, eliminating external gate-driver timing circuits. With 32 MHz CPU and 10-bit ADC sampling at >100 ksps, the device closes voltage and current feedback loops in buck, boost, and flyback topologies. The 1.8V-3.6V Vdd range lets the controller run directly from auxiliary rails of 3.3V or 5V systems via an LDO.
Được đề xuất
Stepper Motor and BLDC Drivers
Stepper motor and brushless DC (BLDC) drives leverage the PIC16LF1578T-I/GZ's four 16-bit PWMs as commutation timing references and the CWG for complementary drive. The 16-bit resolution delivers smooth microstepping profiles (up to 256 microsteps/step) for low-speed torque ripple reduction in CNC, robotics, and 3D-printer applications. The integrated comparator and 10-bit ADC handle back-EMF sensing for sensorless commutation in BLDC fans and pumps. With 17 I/O pins and a 32 MHz core, the MCU implements trapezoidal or FOC commutation tables in firmware.
Được đề xuất
Battery-Powered IoT Sensor Nodes
Battery-powered IoT sensor nodes benefit from the PIC16LF1578T-I/GZ's 1.8V minimum supply, allowing direct operation from a single Li-ion or 2x AA cell without boost regulator. The 16-bit PWMs drive sensor excitation pulses, dim status LEDs, and generate wake-up intervals. With Sleep current <50 nA typical and active 32 MHz operation, the part achieves years of battery life in intermittent-sensing applications like remote environmental monitors, smart locks, and asset trackers. The 10-bit ADC reads temperature, light, and battery voltage with adequate resolution for threshold alerts.
Được đề xuất
Industrial Control and Automation
Industrial control and automation PLCs, signal conditioners, and process controllers use the PIC16LF1578T-I/GZ as a low-cost analog front-end controller. Four 16-bit PWMs drive 4-20 mA loop outputs and proportional valves; the 10-bit ADC reads RTDs, thermocouples (with external amp), and 0-10V analog inputs. Industrial temperature grade (-40C to +85C) and Core Independent Peripherals (CIPs) ensure deterministic real-time response without CPU intervention for safety-critical timing. The 20-pin UQFN package fits compact DIN-rail modules.
Được đề xuất
Consumer Electronics and Toys
Consumer products like electronic toys, gaming peripherals, and remote controls use the PIC16LF1578T-I/GZ as a low-cost motion, audio, and LED controller. Four 16-bit PWMs generate servo control signals, RGB LED patterns, and piezo buzzer tones; the 10-bit ADC reads potentiometers and joystick axes. Operating from 1.8V-3.6V, the part runs directly from 2x AA cells without boost regulation. The 32 MHz CPU and 7KB Flash deliver sophisticated behavior (sound playback, LED animations) in cost-sensitive consumer products.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC16LF1578T-I/GZ — 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 | PIC16F1578T-I/GZ |
|---|---|---|
| Brand | Microchip Technology | Microchip Technology |
| Package | 20-pin UQFN (4x4 mm) | 20-pin UQFN (4x4 mm) - same |
| Architecture | PIC16F1 8-bit | PIC16F1 8-bit (same) |
| Flash Memory | 7 KB | 7 KB (same) |
| RAM | 512 B | 512 B (same) |
| Maximum CPU Speed | 32 MHz | 32 MHz (same) |
| Operating Voltage | 1.8 V to 3.6 V | 2.3 V to 5.5 V (wider) |
| PWM Channels | 4 x 16-bit | 4 x 16-bit (same) |
| I/O Pins | 17 | 17 (same) |
| ADC | 10-bit | 10-bit (same) |
| Complementary Waveform Generator | Yes | Yes (same) |
Bảo phân biệt quan trọng
- Four independent 16-bit PWM channels with separate timers (vsPIC16F1509T-I/GZ)
- Integrated Complementary Waveform Generator (CWG) with dead-band control (vsPIC16F1574-I/P)
- Low-voltage operation down to 1.8V (vsPIC16F1578T-I/GZ)
Ghi chú thiết kế
The PIC16LF1578T-I/GZ operates from 1.8V to 3.6V. Place a 100 nF decoupling capacitor as close as possible to the VDD pin (pin 15), with a bulk 10 uF tantalum or ceramic cap on the same node. Connect the exposed thermal pad (pin 20/EP) to VSS for thermal dissipation and ground integrity. For battery applications, add a 100 kOhm pull-down on MCLR/RA3 to prevent unintended resets during brown-out.
The 20-pin UQFN (4x4 mm) package requires careful PCB layout due to the 0.5 mm pitch. Route all signals on outer layers only; avoid running signals under the exposed pad. Keep analog traces (ADC inputs) short and away from PWM switching traces to prevent digital noise coupling. For high-speed ADC sampling (>50 ksps), use a ground pour under the IC and isolate analog/digital ground regions at a single point.
Do not assume firmware portability between PIC16F baseline and PIC16F1 enhanced mid-range cores - the instruction set differs at the binary level. Compile with MPLAB X IDE and XC8 compiler using -mcpu=16f1578. The LF and F variants have different Vdd ranges; using PIC16F firmware on a PIC16LF may not run at 1.8V, and PIC16LF code on PIC16F runs fine but wastes the lower voltage capability.
Thông tin tuân thủ
RoHS and REACH compliant per Microchip product page. Not AEC-Q100 qualified - this is a consumer/industrial-grade MCU, not automotive. Choose PIC16F1578-E/SL or AEC-Q100 qualified parts for automotive designs.
