PIC16LF1459-I/SS - 8-Bit 48MHz 14KB Flash USB MCU | Microchip
料号： PIC16LF1459-I/SS ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $2.95 | $2.95 |
| 10 | $2.65 | $26.50 |
| 100 | $2.28 | $228.00 |
| 500 | $1.98 | $990.00 |
| 1,000 | $1.78 | $1,780.00 |
| 3,000 | $1.62 | $4,860.00 |
PIC16LF1459-I/SS 概述
An 8-bit PIC microcontroller is a Harvard-architecture RISC processor that executes one instruction per cycle (excluding branches) with separate program and data buses. The PIC16F14xx family extends this baseline with USB 2.0 full-speed transceivers, configurable logic cells, and dual PWM/capture modules, positioning the line between simple 8-bit controllers and larger 16-bit dsPIC devices. Within the broader taxonomy, PIC16F145x sits in the family 8-bit microcontroller -> RISC MCU -> embedded controller -> semiconductor, serving as a low-cost workhorse for human-interface and consumer products.
Key features of the PIC16LF1459 include 18 general-purpose I/O pins, 4 timers, 2 PWM channels, 2 comparators, an 8-channel 10-bit ADC, a watchdog timer with its own dedicated oscillator, an internal oscillator, and on-chip USB with a dedicated 3.3V regulator. XLP technology keeps active current in the milliampere range and sleep current under typical microampere values, which is critical for USB-powered or battery-powered designs.
Typical applications for the PIC16LF1459-I/SS are USB human-interface devices such as keyboards, mice, game controllers, USB-to-UART bridges, and low-cost sensor/LED peripherals. Designers select this part when they need a true USB device on a 20-pin footprint without external PHY, and when power budget, BOM size, and a mature toolchain (MPLAB X, XC8) are top priorities.
When designing in this part, plan the 5V/3.3V domains: the USB transceiver is 3.3V-tolerated and the part includes an internal 3.3V regulator that can supply the pull-up resistor. A 1 uF decoupling capacitor near VDD and proper PCB stackup for the D+/D- differential pair are essential for USB compliance.
直接替换替代料： PIC16LF1459-I/SS ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： PIC16LF1459-I/SS （相同外形与封装尺寸） ——差异在于 Package, ADC, Operating Temperature, Timers, MSL Level.
快速对比工具——选择替代料号进行并排对比：
PIC16F1459-I/SS
✅ 直接替换✓ 有现货
$1.55 / 个
查看数据手册 →PIC16LF1459-E/SS
✅ 直接替换✓ 有现货
$1.55 / 个
查看数据手册 →PIC16F1459-E/SS
✅ 直接替换✓ 有现货
$1.78 / 个
查看数据手册 →PIC16LF1459T-I/SS
✅ 直接替换✓ 有现货
$1.18 / 个
查看数据手册 →PIC16LF1459-I/SS 最大额定值与电气特性
| Core | PIC16 (enhanced mid-range 8-bit RISC) |
| Program Memory (Flash) | 14 KB (8K x 14 words) |
| Data RAM | 1024 bytes |
| Maximum CPU Speed | 48 MHz |
| Instruction Execution | 200 ns per instruction cycle |
| Operating Voltage Range | 1.8 V to 5.5 V |
| I/O Pins | 18 |
| 封装 | 20-pin SSOP (5.30 mm body, 0.65 mm pitch) |
| 安装类型 | Surface Mount (Gull-Wing) |
| ADC | 8-channel, 10-bit |
| Timers | 4 |
| PWM Channels | 2 |
| Comparators | 2 |
| Watchdog Timer | Yes (dedicated WDT oscillator) |
| USB | USB 2.0 Full-Speed Device with internal 3.3V regulator |
| XLP (eXtreme Low Power) | Yes |
| 工作温度 | -40 C to +85 C (Industrial, "I") |
| MSL 等级 | 1 |
| RoHS 状态 | Compliant |
| Lead-Free / Halogen-Free | Yes |
PIC16LF1459-I/SS 引脚配置
| 引脚 1 | RA3/AN3/C1IN+/T0CKI — Bidirectional I/O; analog channel 3; comparator 1 input; Timer0 clock input |
| 引脚 2 | RA4/AN4/T1G/SDO — Bidirectional I/O; analog channel 4; Timer1 gate; SPI data out |
| 引脚 3 | RA5/AN5/T1CKI/SS/HSCSDO — Bidirectional I/O; analog channel 5; Timer1 clock; SPI slave select; High-Speed PWM SDO |
| 引脚 4 | RA0/D-/VDDIO2 — Bidirectional I/O; USB D-; alternate I/O voltage rail |
| 引脚 5 | RA1/D+/VDDIO3 — Bidirectional I/O; USB D+; alternate I/O voltage rail |
| 引脚 6 | VSS — Ground reference |
| 引脚 7 | RA2/VCAP — Bidirectional I/O; 1.8V regulator output capacitor |
| 引脚 8 | VDD — Positive supply 1.8V to 5.5V |
| 引脚 9 | RA6/OSC2/CLKOUT — Bidirectional I/O; crystal oscillator output; clock out |
| 引脚 10 | RA7/OSC1/CLKIN — Bidirectional I/O; crystal oscillator input; clock in |
| 引脚 11 | RC0/SOSCIN/SOSCO — Bidirectional I/O; secondary oscillator I/O |
| 引脚 12 | RC1/SOSCO — Bidirectional I/O; secondary oscillator output |
| 引脚 13 | RC2/CCP1/AN6 — Bidirectional I/O; CCP1; analog channel 6 |
| 引脚 14 | RC3/AN7/CCP2/SEG0 — Bidirectional I/O; analog channel 7; CCP2; LCD segment 0 |
| 引脚 15 | RC4/AN8/SDA/SDI/SEG1 — Bidirectional I/O; analog channel 8; I2C data; SPI data in; LCD segment 1 |
| 引脚 16 | RC5/AN9/SCL/SCK/SEG2 — Bidirectional I/O; analog channel 9; I2C clock; SPI clock; LCD segment 2 |
| 引脚 17 | RC6/AN10/SEG3 — Bidirectional I/O; analog channel 10; LCD segment 3 |
| 引脚 18 | RC7/AN11/SEG4 — Bidirectional I/O; analog channel 11; LCD segment 4 |
| 引脚 19 | VUSB3V3 — Internal 3.3V USB regulator output - decouple with >=0.47 uF |
| 引脚 20 | RA0 — Bidirectional I/O (alternate function with pin 4) |
典型应用
PIC16LF1459-I/SS 适用于 6 应用s: USB HID Keyboard / Mouse, USB-to-UART Bridge / CDC Device, Battery-Powered LED Controller, Industrial Sensor USB Dongle, Consumer Game Controller / HID Joystick, Wearable Fitness / IoT Edge Node.
USB HID Keyboard / Mouse
The PIC16LF1459-I/SS is well suited to USB HID keyboards and mice because it integrates a USB 2.0 full-speed device transceiver, an internal 3.3V LDO for the PHY, and a software-disconnectable 1.5 kOhm pull-up on D+. With 14 KB of Flash the part comfortably hosts a USB HID boot-loader plus scan-matrix firmware, while XLP technology keeps active current under 5 mA at 48 MHz. The 18 I/O pins easily cover a 8x14 keyboard scan matrix, and the SSOP-20 footprint fits inside a USB cable dongle.
推荐
USB-to-UART Bridge / CDC Device
The PIC16LF1459-I/SS can implement a low-cost USB-to-UART bridge using the USB CDC class, eliminating the need for a dedicated bridge IC like the FT232. The 48 MHz core, 14 KB Flash, and hardware UART make CDC firmware compact, while the integrated USB transceiver removes external PHY cost. The 1024-byte RAM is enough for 64-byte USB packets plus a small ring buffer, and the 1.8 V to 5.5 V VDD range lets the same part serve 3.3 V and 5 V host environments.
推荐
Battery-Powered LED Controller
The PIC16LF1459-I/SS fits battery-powered LED controllers because of its XLP low-power design: typical sleep current is in the microampere range, and 2 PWM channels plus 18 I/O can drive RGBW LED strings through external MOSFETs. Operating from 1.8 V to 5.5 V lets a single 3.7 V Li-ion or 2x AA pack power the design, while the 8-channel 10-bit ADC reads battery voltage and current shunt for accurate fuel gauging. The 20-pin SSOP is small enough to fit inside an LED bulb base.
推荐
Industrial Sensor USB Dongle
Industrial USB sensor dongles that report temperature, pressure, or flow measurements can use the PIC16LF1459-I/SS for a compact, low-power solution. The 8-channel 10-bit ADC digitizes sensor outputs at adequate resolution, and the integrated USB device supports a vendor-class endpoint to stream data to a host application. The 1.8 V minimum VDD allows direct connection to 2x AA cells, and the 4 timers let the firmware schedule periodic measurement and reporting without busy-waiting. Industrial temperature grade (-40 C to +85 C) is built into the I suffix.
推荐
Consumer Game Controller / HID Joystick
The PIC16LF1459-I/SS serves as the main MCU in low-cost USB game controllers and HID joysticks. The 2 analog comparators and 8-channel 10-bit ADC digitize analog stick positions, while 18 GPIO pins handle 16+ button inputs and LED status indicators. USB HID class support is built into Microchip's MLA library, simplifying boot-loader and runtime firmware development. The 48 MHz core runs polling loops and USB stacks simultaneously, and the SSOP-20 footprint fits inside compact controller housings.
推荐
Wearable Fitness / IoT Edge Node
Wearable fitness bands and IoT edge nodes benefit from the PIC16LF1459-I/SS's XLP technology, which keeps sleep current in the microampere range between sensor samples, extending battery life. Operating from 1.8 V to 5.5 V, the MCU can run directly from a single Li-ion or a coin cell, while 18 I/O pins connect to a 3-axis accelerometer, optical heart-rate sensor, and small OLED display over I2C or SPI. The 14 KB Flash and 1024 B RAM are sufficient for sensor fusion, BLE pass-through, and a USB charging interface.
推荐
推荐产品汇总
工程参考数据： PIC16LF1459-I/SS ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | PIC16F1459-I/SS | PIC16LF1459-E/SS | PIC16F1459-E/SS | PIC16LF1459T-I/SS |
|---|---|---|---|---|---|
| Package | 20-pin SSOP | 20-pin SSOP | 20-pin SSOP | 20-pin SSOP | 20-pin SSOP |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash Memory | 14 KB | 14 KB | 14 KB | 14 KB | 14 KB |
| Min VDD | 1.8 V | 2.3 V | 1.8 V | 2.3 V | 1.8 V |
| Max VDD | 5.5 V | 5.5 V | 5.5 V | 5.5 V | 5.5 V |
| CPU Clock | 48 MHz | 48 MHz | 48 MHz | 48 MHz | 48 MHz |
| USB | Yes, FS with 3.3V LDO | Yes, FS with 3.3V LDO | Yes, FS with 3.3V LDO | Yes, FS with 3.3V LDO | Yes, FS with 3.3V LDO |
| Operating Temperature | -40 C to +85 C | -40 C to +85 C | -40 C to +125 C | -40 C to +125 C | -40 C to +85 C |
关键差异点
- Lowest minimum VDD in the PIC16F145x family （对比 PIC16F1459-I/SS)
- Industrial -40 C to +85 C temperature range at lower cost than the E grade （对比 PIC16LF1459-E/SS)
- Integrated USB 2.0 full-speed with on-chip 3.3V LDO （对比 PIC16LF1455-I/SL (non-USB sibling))
设计说明
The PIC16LF1459-I/SS includes an internal 1.8V core regulator whose output (VCAP, pin 7) must be decoupled with a low-ESR 0.1uF to 1uF ceramic capacitor placed as close to the pin as possible. Estimated: with VDD = 5.0V and active core at 48 MHz drawing ~5 mA from VCAP, the internal regulator dissipates approximately 16 mW; this is negligible but the bypass capacitor is mandatory. Without VCAP decoupling the part will reset or behave unpredictably.
For USB compliance, route the D+ (pin 5) and D- (pin 4) lines as a 90-ohm differential pair with matched length and continuous ground reference, keeping the trace impedance to 90 ohms +/-10%. Place the VUSB3V3 capacitor (pin 19) on the same side of the board as the MCU, with a 0.47 uF or larger X5R/X7R ceramic. A ferrite bead between VBUS and VDD is recommended for bus-powered designs to suppress VBUS transients reaching the MCU core.
Do not tie VUSB3V3 to an external 3.3V rail - it is the output of the internal LDO and is intended only for the USB PHY. Connecting an external supply to VUSB3V3 will back-drive the regulator. The internal 1.5 kOhm D+ pull-up is software-disconnectable but does not include a soft-disconnect timer; firmware must re-attach properly after bus reset to avoid enumeration failure on some hosts.
If you switch the system clock to 48 MHz from the internal 16 MHz HFINTOSC plus 3x PLL, allow the 2 ms oscillator startup time before initiating USB transactions. Under firmware, use the PLL lock-status bit (OSCSTAT) to gate the USB stack to avoid fractional-frequency jitter. Estimated: total frequency error must stay within USB 2.0's +/-0.25% requirement (2500 ppm), so a 16 MHz HFINTOSC calibrated to within 0.5% gives 500 ppm error plus 0.25% from 3x PLL multiplication = within spec.
合规信息
RoHS and lead-free per Microchip product page. Industrial temperature grade -40C to +85C. Not AEC-Q100 qualified - choose PIC16F1459-E/SS or PIC16LF1459-E/SS for higher temperature applications.
