PIC16LF1828-E/GZ - 8-bit MCU, 7KB Flash, 32MHz, 20-UQFN | Microchip
MPN: PIC16LF1828-E/GZ ✓ Hoạt độngPIC16LF1828-E/GZ Tóm tắt
What is an 8-bit microcontroller? An 8-bit MCU is a small computer-on-a-chip that processes data in 8-bit chunks and is the foundational building block of embedded systems. The PIC16LF1828 belongs to the enhanced mid-range PIC16 architecture, sitting in the hierarchy: microcontroller -> 8-bit MCU -> enhanced mid-range PIC16 -> nanoWatt XLP family -> semiconductor. Its Harvard RISC core with 49 instructions and 16-level hardware stack delivers deterministic, low-latency interrupt response valued in safety-critical loops.
Key features include 7 KB (4K x 14) self-programmable Flash with read-while-write, 256 B RAM, 256 B EEPROM, on-chip FRC oscillator with PLL, and ultra-low-power sleep modes (down to ~20 nA typical). The mTouch capacitive-touch peripheral enables capacitive buttons and sliders without external components, while the ADC operates with an internal fixed-voltage reference for ratiometric measurements.
Typical applications include low-power IoT sensor nodes, wearable health bands, capacitive-touch user interfaces, remote controls, battery-powered HVAC sensors, and consumer white goods requiring USB-friendly 3.3 V rails. The 1.8 V minimum rail makes it compatible with single-cell alkaline or Li-Ion coin-cell designs.
Design with the PIC16LF1828 using MPLAB X IDE and the XC8 compiler; debug via PICkit 3 or MPLAB ICD 3 on the ICSP pins. Place a 100 nF decoupling capacitor directly on VDD and route the ICSP lines away from switching nodes.
Bộ thay thế dễ dàng lắp đặt cho PIC16LF1828-E/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 PIC16LF1828-E/GZ (cùng hình factor và footprint) — khác nhau ở Package, Operating Temperature, Program Memory (Flash), Timers, ADC.
PIC16LF1828-I/GZ
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| Core Architecture | 8-bit PIC enhanced mid-range (Harvard RISC) |
| Program Memory (Flash) | 7 KB (4K x 14) |
| Data SRAM | 256 B |
| Data EEPROM | 256 B |
| Maximum CPU Clock | 32 MHz (200 ns instruction cycle) |
| Operating Voltage Range | 1.8 V to 3.6 V |
| I/O Pins | 18 |
| ADC | 10-bit, up to 12 channels |
| Timers | Two 8-bit, one 16-bit |
| PWM Module | ECCP (Enhanced Capture/Compare/PWM) |
| Communication Peripherals | MSSP (I2C/SPI), EUSART |
| Capacitive Touch | mTouch (CTMU) |
| Hộp | 20-pin UQFN (4x4 mm) |
| Khoảng nhiệt độ hoạt động | -40 C to +125 C (extended industrial, -E suffix) |
| Trạng thái RoHS | Compliant |
Cấu hình chân PIC16LF1828-E/GZ
| Chân 1 | VDD — Positive power supply (1.8 V to 3.6 V) |
| Chân 2 | RA5 — Bidirectional I/O / ICSP VPP |
| Chân 3 | RC7 — Bidirectional I/O |
| Chân 4 | RC6 — Bidirectional I/O |
| Chân 5 | RC5 — Bidirectional I/O |
| Chân 6 | RC4 — Bidirectional I/O |
| Chân 7 | RC3 — Bidirectional I/O / SCL (MSSP I2C) |
| Chân 8 | RC2 — Bidirectional I/O |
| Chân 9 | RC1 — Bidirectional I/O |
| Chân 10 | RC0 — Bidirectional I/O |
| Chân 11 | RA7 — Bidirectional I/O / OSC1 |
| Chân 12 | RA6 — Bidirectional I/O / OSC2 |
| Chân 13 | RA3 — Bidirectional I/O / MCLR (reset) |
| Chân 14 | RA4 — Bidirectional I/O (open-drain, no output driver) |
| Chân 15 | RA2 — Bidirectional I/O |
| Chân 16 | RA1 — Bidirectional I/O / ICSPCLK |
| Chân 17 | RA0 — Bidirectional I/O / ICSPDAT |
| Chân 18 | VSS — Ground reference |
| Chân 19 | RB7 — Bidirectional I/O |
| Chân 20 | RB6 — Bidirectional I/O / PGC |
Ứng dụng tiêu biểu
PIC16LF1828-E/GZ phù hợp cho 6 Áp dụngs: Battery-Powered IoT Sensor Node, Capacitive Touch User Interface, Wearable Health Band, Remote Control (IR/RF), HVAC Environmental Sensor, Consumer White Goods (Coffee Machine, Washer UI).
Battery-Powered IoT Sensor Node
The PIC16LF1828-E/GZ is an ideal host for a coin-cell IoT sensor node because its nanoWatt XLP Sleep current drops to ~20 nA typical with WDT off, enabling multi-year battery life on a single CR2032. With 7 KB of Flash and 256 B of RAM it runs a small RTOS-less sensor loop, duty-cycling the 10-bit ADC to wake, sample, transmit via EUSART, and return to Sleep. The 1.8 V minimum rail directly accepts the CR2032 discharge curve, eliminating the need for a boost regulator.
Được đề xuất
Capacitive Touch User Interface
The PIC16LF1828-E/GZ integrates the mTouch CTMU peripheral, which measures capacitance change on a pin with sub-pF resolution and no external analog components - perfect for capacitive buttons, sliders, or proximity wake. Combined with 18 I/O and 12 ADC channels, one MCU can replace several mechanical switches and a dedicated touch controller, shrinking the BOM and lowering the Sleep current below what a discrete touch ASIC typically draws.
Được đề xuất
Wearable Health Band
Wearable health bands benefit from the PIC16LF1828-E/GZ's 20-UQFN (4x4 mm) tiny footprint, which fits comfortably on a wristband PCB next to a Li-Po cell. The on-chip 10-bit ADC samples heart-rate or SpO2 photodiode signals, the EUSART streams data to a paired BLE module, and the LF process node keeps active current under 1 mA at 3.3 V. The 256-byte EEPROM stores user-profile data without external memory.
Được đề xuất
Remote Control (IR/RF)
A TV remote control running on two AAA cells is a classic fit for the PIC16LF1828-E/GZ: the 1.8-3.6 V supply directly rails the cell stack, the ECCP + 16-bit timer generates precise 38 kHz IR carrier modulation, and Sleep current at <50 nA means the batteries outlast the plastic. The 7 KB Flash accommodates multi-protocol IR libraries (RC5, NEC, SIRC) and the EUSART drives a 433/915 MHz OOK transmitter for RF variants.
Được đề xuất
HVAC Environmental Sensor
The PIC16LF1828-E/GZ monitors temperature, humidity, and CO2 in HVAC systems using its 10-bit ADC with the internal fixed-voltage reference for ratiometric sensor reads. The MSSP peripheral interfaces I2C sensors like the MCP9808 or SHT31, the EUSART reports back to a building controller via RS-485, and the -40 to +125 C extended temperature range handles attic and outdoor installations without derating.
Được đề xuất
Consumer White Goods (Coffee Machine, Washer UI)
In a coffee machine or washer front panel, the PIC16LF1828-E/GZ drives the LED/LCD user interface, reads mechanical and capacitive buttons, and pulses TRIAC drivers via its ECCP module for heater control. The 1.8-3.6 V rail shares a small SMPS with the rest of the appliance, and the on-chip mTouch module eliminates dozens of mechanical switches. Flash read-while-write supports OTA-style firmware updates for warranty-recovery cycles.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC16LF1828-E/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 | PIC16LF1828-I/GZ | PIC16F1828-E/GZ |
|---|---|---|---|
| Package | 20-UQFN (4x4 mm) | 20-UQFN (4x4) - same | 20-UQFN (4x4) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash Memory | 7 KB | 7 KB | 7 KB |
| Operating Voltage | 1.8 V to 3.6 V | 1.8 V to 3.6 V | 1.8 V to 5.5 V |
| Temperature Range | -40 C to +125 C (extended) | -40 C to +85 C (industrial) | -40 C to +125 C (extended) |
| Sleep Current (typ) | ~20 nA | ~20 nA | ~50-100 nA |
| ADC | 10-bit, 12 channels | 10-bit, 12 channels | 10-bit, 12 channels |
| Capacitive Touch | mTouch (CTMU) | mTouch (CTMU) | mTouch (CTMU) |
Bảo phân biệt quan trọng
- Smallest-package 7 KB Flash XLP MCU in 20-UQFN (4x4 mm) (vsPIC16LF1828-I/SO)
- Lower Sleep current than 5 V-rated F variant (vsPIC16F1828-E/GZ)
- Extended -40 to +125 C temperature grade (vsPIC16LF1828-I/GZ)
Ghi chú thiết kế
Estimated: at 32 MHz active current is approximately 5 mA at 3.3 V; duty-cycling with Sleep of ~20 nA yields average draw in the single-digit uA for periodic sensor products. Always place a 100 nF X7R decoupling capacitor within 2 mm of VDD and a bulk 1-10 uF tantalum at the regulator output.
Route the ICSP lines (RA0/RA1 for ICSPDAT/ICSPCLK, RA3/MCLR for VPP) so they reach an in-system programming header without crossing switching nodes. The UQFN-20 has an exposed pad on the bottom that must be soldered to the ground pour for thermal dissipation - leave a 4x4 thermal via array under the pad.
RA4 is open-drain on PIC16F/LF182x parts and cannot source current - if you need a high-side LED, use RA2/RA5 instead or add an external pull-up transistor. The MCLR pin (RA3) is enabled by default and must be tied to VDD through a 10 k resistor; floating MCLR causes intermittent resets during ESD events.
When using the MSSP I2C peripheral at 400 kHz or 1 MHz, place 2.2-4.7 k pull-ups close to the bus master and keep traces under 50 mm. For capacitive touch, the CTMU current source is sensitive to leakage; guard-ring the touch pads and route them on the top layer with no vias in the pad area.
Thông tin tuân thủ
RoHS and lead-free status confirmed by Mouser and Digi-Key product listings; halogen-free status not explicitly stated in scraped data - verify against Microchip material declaration before halogen-critical designs.
