PIC16F1455-I/ML - 8-bit 48MHz USB MCU 14KB Flash | Microchip
MPN： PIC16F1455-I/ML ✓ 啟用中PIC16F1455-I/ML 概覽
A microcontroller (MCU) is a single-chip computer that integrates a CPU, memory (Flash/EEPROM/RAM), and peripherals on one die. The PIC16F1455 belongs to the PIC16F1xxx enhanced mid-range family, positioned in Microchip's hierarchy as PIC16 family -> 8-bit MCU -> microcontroller -> embedded processor -> semiconductor. Its 49-instruction RISC core provides deterministic execution while the XLP (eXtreme Low Power) technology variant enables deep-sleep currents below 1 uA, allowing USB-equipped nodes to run from coin cells in HID and sensor applications.
Key features include 14 KB self-read/write Flash, 1024 B RAM, 256 B EEPROM, 128 B of non-volatile data storage (HEF), a 16-level hardware stack, and 12 I/O pins. The integrated USB 2.0 full-speed transceiver with on-chip 3.3V regulator eliminates the need for an external USB PHY in many designs, while two standalone 10-bit PWM modules, an Enhanced Universal Synchronous/Asynchronous Receiver/Transmitter (EUSART), and Master I2C/SPI peripherals support mixed-signal connectivity.
Architecturally, the PIC16F1455 uses an enhanced mid-range core with 49 instructions, automatic context saving on interrupts, and a configurable instruction pipeline. The 48 MHz internal oscillator with 4x PLL and a 31 kHz low-power oscillator provide both high-throughput USB timing and low-Iq standby. Internal high-endurance Flash (HEF) delivers up to 100k erase/write cycles, suitable for data logging and parameter storage.
Typical applications include USB HID peripherals (keyboards, mice, custom input devices), USB-to-UART bridges, LED lighting controllers with USB firmware update, low-cost sensor nodes, and industrial human-interface panels. Designers also deploy it in USB bootloader hosts, medical instrumentation data ports, and consumer audio accessories.
When designing with this part, allocate the exposed pad (EP) to a continuous ground pour for thermal dissipation and signal integrity. The USB D+/D- traces must be length-matched within 150 mil; place the 27 ohm series resistors close to the MCU pins per USB 2.0 specification.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
直接替換替代品，適用於 PIC16F1455-I/ML — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： PIC16F1455-I/ML （相同外形與佔位） — 差異在於 Package, Operating Temperature, USB Module, ADC, I/O Pins.
PIC16F1454-I/ML
✅ 直接替換📋 參考替代品（不在目錄中）
PIC16LF1455-I/ML
✅ 直接替換聯絡詢價
查看資料表 →PIC16LF1454-I/ML
✅ 直接替換聯絡詢價
查看資料表 →PIC16F1455-I/JQ
✅ 直接替換聯絡詢價
查看資料表 →PIC16F1455-E/ST
✅ 直接替換聯絡詢價
查看資料表 →PIC16F1455-I/ML 最大額定值與電氣特性
| Core Architecture | PIC16 enhanced mid-range 8-bit RISC |
| Instruction Set | 49 instructions, 16-level hardware stack |
| Program Memory (Flash) | 14 KB (8K x 14 words) |
| Data RAM | 1024 B |
| Data EEPROM | 256 B |
| High-Endurance Flash (HEF) | 128 B non-volatile data storage |
| Maximum CPU Frequency | 48 MHz |
| Supply Voltage (VDD) | 2.3 V to 5.5 V |
| USB Module | USB 2.0 full-speed device with internal 3.3V regulator |
| I/O Pins | 12 |
| PWM Modules | 2x 10-bit standalone PWM |
| Communication Peripherals | EUSART, I2C (Master), SPI |
| 封裝 | 16-pin QFN (4x4 mm) with exposed pad |
| 工作溫度 | -40C to +85C (industrial, -I) |
| 安裝類型 | Surface Mount |
| RoHS 狀態 | Compliant |
| Internal Oscillator | 48 MHz with PLL + 31 kHz low-power LFINTOSC |
PIC16F1455-I/ML 腳位配置
| 腳位 1 | RA5 — Digital I/O / analog input / IOC |
| 腳位 2 | RA4 — Digital I/O / analog input / IOC |
| 腳位 3 | RA3/MCLR — Digital I/O / master clear reset (input) |
| 腳位 4 | RC5 — Digital I/O / PWM output |
| 腳位 5 | RC4 — Digital I/O / USB D- |
| 腳位 6 | RC3 — Digital I/O / USB D+ |
| 腳位 7 | RC6 — Digital I/O / TX/CK |
| 腳位 8 | RC7 — Digital I/O / RX/DT |
| 腳位 9 | RB7 — Digital I/O / IOC / ICDCLK |
| 腳位 10 | RB6 — Digital I/O / IOC / ICDA |
| 腳位 11 | RB5 — Digital I/O / IOC / AN |
| 腳位 12 | RB4 — Digital I/O / IOC / AN |
| 腳位 13 | VDD — Positive supply voltage |
| 腳位 14 | VSS — Ground reference |
| 腳位 15 | RA1 — Digital I/O / ICSPCLK / analog input |
| 腳位 16 | RA0 — Digital I/O / ICSPDAT / analog input |
| 腳位 17 | EP — Exposed thermal pad - connect to VSS (ground) |
典型應用
PIC16F1455-I/ML 適用於 7 應用s: USB HID Peripheral (Keyboard / Mouse / Custom Input), USB-to-UART Bridge / Virtual COM Port, USB Bootloader Host / Field Firmware Update, LED Lighting Controller with USB Control, Low-Cost USB Sensor Node / Data Logger, Consumer Audio Accessory / Headset Controller, Industrial Human Interface Panel (HMI).
USB HID Peripheral (Keyboard / Mouse / Custom Input)
The PIC16F1455-I/ML is purpose-built for USB HID device designs. Its integrated USB 2.0 full-speed transceiver with on-chip 3.3V regulator eliminates the need for an external PHY; the 48 MHz internal oscillator with PLL provides the accurate 48 MHz clock required for USB 12 Mbps signaling, and 1024 B of RAM comfortably holds HID report buffers plus stack and runtime data. Per the Microchip datasheet, the USB module handles all token, handshake, and SOF processing in hardware, leaving the CPU free for HID scanning at sub-1 ms intervals. Pair it with the free Microchip USB HID bootloader to ship field-upgradable firmware without external programmers.
推薦
USB-to-UART Bridge / Virtual COM Port
Use the PIC16F1455-I/ML as a USB-to-UART bridge to add a virtual COM port to legacy equipment, debug consoles, or industrial sensors. The on-chip USB device interface plus the EUSART peripheral form a complete CDC class bridge with no external components beyond 27 ohm series resistors on D+/D- lines. The 14 KB Flash easily hosts the Microchip USB CDC stack plus application-level protocol handling, and the 48 MHz core sustains continuous 115200 bps (and higher) UART throughput. Power is derived entirely from the USB VBUS rail, simplifying BOM and eliminating the need for an external LDO in many designs.
推薦
USB Bootloader Host / Field Firmware Update
The PIC16F1455-I/ML is widely deployed as a USB-DFU bootloader target, leveraging its self-read/write Flash and 14 KB of program space to host both the bootloader and application firmware. Per the Microchip datasheet, Flash endurance of 100k erase/write operations supports thousands of field reflows in commercial and consumer products. Designers can partition the Flash so the USB bootloader occupies a fixed high region and the application occupies the lower region, enabling safe firmware upgrades without external programming hardware. The 128-byte High-Endurance Flash (HEF) buffer is ideal for storing version metadata and bootloader state.
推薦
LED Lighting Controller with USB Control
Drive addressable LED strips, mood lighting, or architectural fixtures from the PIC16F1455-I/ML, using the USB interface for configuration, scene selection, and firmware updates. The two standalone 10-bit PWM modules provide fine dimming resolution, while the 48 MHz core sustains high-refresh-rate LED protocols (WS2812, APA102) via bit-banged SPI for thousands of pixels per string. The 14 KB Flash accommodates USB stack plus user-defined lighting scenes and effect engines. Industrial temperature grade (-40C to +85C) supports outdoor and architectural deployments where ambient temperatures vary widely.
推薦
Low-Cost USB Sensor Node / Data Logger
Use the PIC16F1455-I/ML as a USB-tethered sensor node for environmental monitoring, lab instrumentation, or industrial data acquisition. The 14 KB Flash plus 256 B EEPROM plus 128 B HEF deliver a tiered storage hierarchy: Flash for firmware, EEPROM for calibration constants, and HEF for rolling logged data. The EUSART and I2C/SPI master interfaces connect to external sensors (temperature, pressure, accelerometers) while the USB interface streams data to a host PC at 12 Mbps. The XLP low-power technology supports battery-backed logging between USB sessions with sub-microamp sleep currents per the Microchip datasheet.
推薦
Consumer Audio Accessory / Headset Controller
The PIC16F1455-I/ML is well suited to USB audio accessories such as USB headsets, USB microphones, and audio interface dongles. The USB 2.0 full-speed interface supports USB Audio Class 1.0 at 48 kHz mono/stereo, and the 48 MHz core sustains isochronous USB transfers with deterministic latency. Designers can leverage the two PWMs for LED status indicators (mute, level), the EUSART for headset-button decoding, and the I2C master for external codec configuration. The compact 16-pin QFN 4x4 mm package fits inside the smallest accessory enclosures, while the industrial temperature range handles consumer use cases reliably.
推薦
Industrial Human Interface Panel (HMI)
Deploy the PIC16F1455-I/ML in industrial HMI panels where USB is used for configuration, diagnostics, and firmware updates on factory floor equipment. The -40C to +85C industrial temperature rating covers most factory environments, and the USB interface allows technicians to plug in a laptop for parameter adjustment, fault log retrieval, or firmware upgrades without opening the panel enclosure. The 14 KB Flash hosts the USB stack plus custom command parser, while the 12 I/O pins drive status LEDs, read panel buttons, and communicate with the main controller via UART or I2C. The exposed-pad QFN package provides good thermal dissipation for sealed enclosures.
推薦
推薦產品摘要
工程參考資料，適用於 PIC16F1455-I/ML — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | PIC16F1454-I/ML | PIC16LF1455-I/ML | PIC16LF1454-I/ML | PIC16F1455-I/JQ | PIC16F1455-E/ST |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 16-pin QFN 4x4 mm | 16-pin QFN 4x4 mm (same) | 16-pin QFN 4x4 mm (same) | 16-pin QFN 4x4 mm (same) | 16-pin QFN 4x4 mm (same) | 14-pin TSSOP (different package) |
| Flash Program Memory | 14 KB | 14 KB | 14 KB | 14 KB | 14 KB | 14 KB |
| Data RAM | 1024 B | 512 B (-50%) | 1024 B | 512 B (-50%) | 1024 B | 1024 B |
| Supply Voltage (VDD) | 2.3 V to 5.5 V | 2.3 V to 5.5 V | 1.8 V to 3.6 V | 1.8 V to 3.6 V | 2.3 V to 5.5 V | 2.3 V to 5.5 V |
| Maximum CPU Frequency | 48 MHz | 48 MHz | 48 MHz (lower VDD limits) | 48 MHz (lower VDD limits) | 48 MHz | 48 MHz |
| USB 2.0 Module | Yes (full-speed device) | Yes (full-speed device) | Yes (full-speed device) | Yes (full-speed device) | Yes (full-speed device) | Yes (full-speed device) |
| Operating Temperature | -40C to +85C (industrial) | -40C to +85C (industrial) | -40C to +85C (industrial) | -40C to +85C (industrial) | -40C to +125C (automotive) | -40C to +125C (extended) |
主要差異化特點
- Integrated USB 2.0 full-speed transceiver with internal 3.3V regulator (對比PIC16F1454-I/ML)
- Industrial voltage range 2.3V-5.5V supports both 3.3V and 5V systems (對比PIC16LF1455-I/ML)
- 1024 B RAM supports USB audio and CDC class implementations (對比PIC16LF1454-I/ML)
設計說明
Route the USB D+ and D- differential pair as a 90 ohm differential impedance with length matching within 150 mil (3.8 mm). Place the 27 ohm series resistors within 4 mm of the RC6/RC3 USB pins. Provide a continuous ground pour beneath the pair and stitch vias along the route edges every 3-5 mm. Per USB 2.0 specification, keep the D+/D- traces away from clock or switching signals. The exposed pad (EP, pin 17) must be soldered to a continuous ground plane for thermal dissipation and signal return integrity.
Decouple VDD (pin 13) with a 100 nF ceramic capacitor placed within 3 mm of the pin, plus a bulk 4.7 uF tantalum or ceramic capacitor on the same node. The USB module derives its internal 3.3V from VDD through an internal LDO; ensure VDD stays within 2.3V-5.5V for proper USB signaling. For bus-powered designs, add a 10 uF bulk capacitor on VBUS upstream of any protection circuitry. If using a self-powered design, route VBUS through a 10 kohm pull-down to signal disconnection to the host per USB 2.0 spec.
Place the 16 MHz or 48 MHz crystal (if used) within 5 mm of the OSC1/OSC2 pins with short, symmetrical traces and a ground guard ring. Although the internal 48 MHz oscillator is factory calibrated to within +/- 1% typical (sufficient for USB), designs requiring tight USB timing should add an external crystal. Keep the MCLR pin (RA3) pulled up to VDD through a 10 kohm resistor with the decoupling capacitor within 5 mm of the pin to ensure clean reset behavior during power-up.
Estimated: USB full-speed enumeration failures are most commonly caused by missing or incorrect VBUS sensing (USB sense bit UCON.SE), improperly connected 3.3V regulator bypass, or incorrect D+/D- pull-up resistor placement. Always verify the 10 kohm pull-up on D- (for full-speed) is enabled only after the device is configured, never as a hardware pull-up. Avoid placing ferrite beads in series with VDD - the USB module's internal 3.3V regulator cannot compensate for additional series impedance. Confirm the device's VID/PID pairing with the host driver stack before mass production.
合規資訊
RoHS and REACH compliant per Microchip product page. The -I/ML variant is industrial grade (-40C to +85C) and not AEC-Q100 qualified; choose the PIC16F1455-I/JQ CQ-graded variant for AEC-Q100 automotive applications. Lead-free and halogen-free per Microchip environmental compliance documentation.
