PIC16LF1458-E/P - 8-bit MCU, 7KB Flash, 48MHz, 20-PDIP | Microchip
料号： PIC16LF1458-E/P ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $2.4 | $2.40 |
| 10 | $2.16 | $21.60 |
| 100 | $1.94 | $194.00 |
| 500 | $1.73 | $865.00 |
| 1,000 | $1.52 | $1,520.00 |
PIC16LF1458-E/P 概述
A microcontroller (MCU) is a single-chip computer containing a CPU, RAM, non-volatile program memory, and programmable I/O peripherals. The PIC16F family uses a modified Harvard RISC architecture with a 14-bit instruction word, prized for deterministic interrupt latency and a compact instruction set. Low-pin-count PIC MCUs like the PIC16LF1458 sit at the entry tier of the Microchip portfolio, targeting cost-sensitive embedded designs where 8-bit processing, USB connectivity, and ultra-low sleep current are sufficient.
Key features include 14 I/O pins, 1 10-bit ADC with up to 9 channels, 2 8-bit timers plus 1 16-bit timer, enhanced PWM, an mTouch capacitive-sensing module, and an integrated USB 2.0 full-speed SIE with on-chip transceiver that eliminates external USB PHY components. The nanoWatt XLP technology enables standby currents below 1 µA, making the device attractive for always-on sensor nodes. An integrated 3.3V LDO provides regulated internal core voltage from the external supply, allowing direct USB-bus powering.
Typical applications include low-cost USB peripherals (HID mice/keyboards, custom HID sensors, USB-to-UART bridges), capacitive touch user interfaces for consumer appliances, portable battery-powered instruments using nanoWatt XLP sleep modes, and small-scale sensor readout boards where a few ADC channels and PWM outputs replace discrete logic.
Designers should pay attention to the VUSB internal regulator current limit (about 100 mA total for the USB section), require an external 5V source on VBUS, and must correctly configure the CONFIG1 register to enable the USB transceiver. Decoupling capacitors (100 nF plus 4.7 µF bulk) must be placed within a few millimeters of VDD and the exposed thermal pad is not present on PDIP packages.
This page synthesizes distributor pricing, drop-in alternative MPNs, and application guidance not aggregated in any single manufacturer document.
直接替换替代料： PIC16LF1458-E/P ——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： PIC16LF1458-E/P （相同外形与封装尺寸） ——差异在于 Program Memory (Flash), ADC, Mounting Type, Package, Core Architecture.
快速对比工具——选择替代料号进行并排对比：
PIC16F1458-E/P
✅ 直接替换✓ 有现货
$1.71 / 个
查看数据手册 →PIC16F18444-E/P
✅ 直接替换📋 参考替代料（不在目录中）
PIC16LF18444-E/P
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$1.4 / 个
查看数据手册 →PIC16F1829-E/P
✅ 直接替换✓ 有现货
$1.41 / 个
查看数据手册 →PIC16F1454-E/P
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$1.32 / 个
查看数据手册 →PIC16LF1458-E/P 最大额定值与电气特性
| Core Architecture | 8-bit PIC (modified Harvard RISC, 14-bit instruction) |
| Series | PIC16F Family (XLP) |
| Program Memory (Flash) | 7 KB (4K x 14) |
| RAM | 512 bytes |
| Max CPU Frequency | 48 MHz |
| Operating Voltage | 1.8 V to 3.6 V |
| I/O Pins | 14 |
| ADC | 1 x 10-bit, up to 9 channels |
| Timers | 2 x 8-bit, 1 x 16-bit |
| PWM Channels | Enhanced PWM (3 channels) |
| USB | USB 2.0 Full-Speed with on-chip transceiver |
| Capacitive Touch | mTouch peripheral |
| 封装 | 20-pin PDIP (0.300", 7.62mm) |
| 安装类型 | Through Hole |
| 工作温度 | -40C to +125C |
| RoHS 状态 | Compliant (per third-party distributor listing) |
| MSL 等级 | Not applicable (through-hole package) |
PIC16LF1458-E/P 引脚配置
| 引脚 1 | RA3/MCLR/VPP — Digital I/O / Master Clear (reset) input / Programming voltage input |
| 引脚 2 | RA4/AN3 — Digital I/O / Analog input channel 3 |
| 引脚 3 | RA5/AN4 — Digital I/O / Analog input channel 4 |
| 引脚 4 | RA6 — Digital I/O |
| 引脚 5 | RA7 — Digital I/O |
| 引脚 6 | VSS — Ground reference |
| 引脚 7 | RA0/AN0/VCAP — Digital I/O / Analog input channel 0 / Filter capacitor connection |
| 引脚 8 | RA1/AN1 — Digital I/O / Analog input channel 1 |
| 引脚 9 | RA2/AN2 — Digital I/O / Analog input channel 2 |
| 引脚 10 | RC0 — Digital I/O |
| 引脚 11 | RC1 — Digital I/O |
| 引脚 12 | RC2 — Digital I/O |
| 引脚 13 | RC3 — Digital I/O |
| 引脚 14 | RC4 — Digital I/O |
| 引脚 15 | RC5 — Digital I/O |
| 引脚 16 | RC6/D+ — Digital I/O / USB D+ data line |
| 引脚 17 | RC7/D- — Digital I/O / USB D- data line |
| 引脚 18 | VBUS — USB VBUS sense input (5V) |
| 引脚 19 | VSS — Ground reference |
| 引脚 20 | VDD — Positive supply voltage (1.8V to 3.6V) |
典型应用
PIC16LF1458-E/P 适用于 7 应用s: USB HID Peripheral (Mouse / Keyboard / Sensor), Capacitive Touch User Interface, Battery-Powered Sensor Node, USB-to-UART Bridge / CDC Device, Industrial Control Front Panel, Portable Medical or Fitness Device, Consumer Appliance Controller.
USB HID Peripheral (Mouse / Keyboard / Sensor)
The PIC16LF1458-E/P is well suited to USB HID peripherals because the on-chip USB 2.0 full-speed transceiver and SIE eliminate the external PHY, the 7KB flash holds the USB stack plus a HID descriptor and report handler, and the 48MHz internal oscillator meets the USB 1.5 Mbps timing budget without an external crystal. Typical designs place the device directly on the 5V VBUS rail and use the internal 3.3V LDO for the USB transceiver section, requiring only the D+/D- 27 ohm series resistors and a USB connector. The nanoWatt XLP sleep mode enables battery-powered wireless-style HID devices that wake on a user button press and report state over USB, with standby currents below 1 µA extending coin-cell life.
推荐
Capacitive Touch User Interface
The PIC16LF1458-E/P integrates Microchip's mTouch capacitive-sensing peripheral alongside the 10-bit ADC and 16-bit timer, enabling button, slider, and proximity sensing on the same die. In a typical appliance front panel the device scans 4-8 touch pads through high-impedance PCB electrodes, debounces the result, and drives PWM outputs to LED backlighting. The 1.8V-3.6V operating range allows direct connection to a 3.3V regulated rail or two AA cells, while nanoWatt XLP sleep mode keeps the touch-sense wake-on-press current below 1 µA between user interactions.
推荐
Battery-Powered Sensor Node
Sensor nodes that take infrequent measurements and transmit data over USB or wired UART benefit from the LF1458's 1.8V-3.6V supply range, nanoWatt XLP sleep currents below 1 µA, and integrated 10-bit ADC with up to 9 channels. A typical design wakes every few seconds from an RTC or watchdog interrupt, samples a temperature or light sensor through the ADC, stores the reading in the 512-byte RAM, and returns to sleep. The 48MHz core executes the wake-handling firmware in well under 1 ms, so the average current is dominated by sleep leakage rather than active run time, enabling multi-year battery life from a CR2032 cell.
推荐
USB-to-UART Bridge / CDC Device
USB-to-UART bridges historically require an external FTDI chip, but the PIC16LF1458-E/P's USB 2.0 full-speed peripheral and 48MHz core can implement a CDC class device directly. With 7KB flash the device can hold Microchip's USB CDC stack plus a UART at up to 115200 baud, eliminating an external bridge IC in designs that already include a PIC MCU. The 20-pin PDIP package is convenient for breadboard prototyping and through-hole assembly in low-volume industrial gateways where field-replaceable modules matter.
推荐
Industrial Control Front Panel
Industrial control panels often combine capacitive buttons, LED indicators driven by PWM, and a USB service port for firmware updates or data logging - exactly the peripheral mix on the PIC16LF1458-E/P. The 14 GPIO pins drive button scanning, LED dimming, and a few optocoupler interfaces; the 16-bit timer provides accurate PWM for indicator brightness and motor speed control in small pumps. The -40C to +125C operating temperature range meets industrial environmental specs, and the 20-pin PDIP through-hole package survives vibration and field-replacement cycles better than fine-pitch SMD alternatives.
推荐
Portable Medical or Fitness Device
Wearable fitness and portable medical devices combine small size, battery operation, capacitive touch buttons, and occasional USB charging - a profile that matches the PIC16LF1458-E/P's feature set. The 1.8V-3.6V supply works directly from a single lithium cell, the mTouch peripheral reads the user's taps on glass or plastic overlays, and the USB peripheral provides both charging handshakes and data sync to a host PC. The nanoWatt XLP sleep mode keeps idle wristbands drawing well below 1 µA between user interactions, extending battery life to weeks of standby on a small Li-ion pack.
推荐
Consumer Appliance Controller
Small kitchen and household appliances - coffee makers, air purifiers, dehumidifiers - need a low-cost MCU that drives a display, reads buttons, controls a motor through PWM, and offers a USB service port for firmware updates. The PIC16LF1458-E/P covers this with its 14 GPIO, 3 PWM channels, mTouch buttons, and USB peripheral in a 20-pin PDIP package that simplifies through-hole assembly and repair. The 7KB flash holds a small RTOS or state-machine firmware plus a USB DFU bootloader, and the wide 1.8V-3.6V supply lets the device share a 3.3V rail with the display driver and motor-FET gate driver.
推荐
推荐产品汇总
工程参考数据： PIC16LF1458-E/P ——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 | PIC16F1458-E/P | PIC16F18444-E/P | PIC16LF18444-E/P | PIC16F1829-E/P | PIC16F1454-E/P |
|---|---|---|---|---|---|---|
| Package | 20-pin PDIP | 20-pin PDIP - same | 20-pin PDIP - same | 20-pin PDIP - same | 20-pin PDIP - same | 20-pin PDIP - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Operating Voltage | 1.8V to 3.6V | 2.3V to 5.5V | 2.3V to 5.5V | 1.8V to 3.6V | 2.3V to 5.5V | 2.3V to 5.5V |
| Max CPU Frequency | 48 MHz | 48 MHz | 32 MHz | 32 MHz | 32 MHz | 48 MHz |
| USB Peripheral | USB 2.0 FS + on-chip transceiver | USB 2.0 FS + on-chip transceiver | USB 2.0 FS | USB 2.0 FS | No USB | USB 2.0 FS + on-chip transceiver |
| ADC | 1 x 10-bit, 9 channels | 1 x 10-bit, 9 channels | Enhanced ADC (more channels/resolution) | Enhanced ADC (more channels/resolution) | 1 x 10-bit | 1 x 10-bit, reduced channels |
| Capacitive Touch (mTouch) | Yes | Yes | Yes (more channels) | Yes (more channels) | Yes | Yes |
| Operating Temperature | -40C to +125C | -40C to +125C | -40C to +125C | -40C to +125C | -40C to +125C | -40C to +125C |
| Approx. Unit Price (qty 100) | USD 1.94 | USD 1.85-2.10 | USD 2.00-2.30 | USD 2.10-2.40 | USD 1.70-2.00 | USD 1.60-1.90 |
关键差异点
- Lowest-voltage variant with full USB and mTouch peripheral set （对比 PIC16F1458-E/P)
- On-chip USB 2.0 full-speed transceiver eliminates external PHY （对比 PIC16F1829-E/P)
- Higher-frequency 48 MHz core vs newer family members （对比 PIC16F18444-E/P)
设计说明
The PIC16LF1458-E/P operates from 1.8V to 3.6V on VDD (pin 20). When powered from a 5V VBUS for USB applications, the device uses its internal 3.3V LDO (driven from VBUS on pin 18) to power the USB transceiver section, and an external 3.3V rail must still be supplied on VDD. Decouple VDD with a 100 nF ceramic capacitor placed within 5 mm of the pin, plus a 4.7 µF bulk capacitor if the supply is shared with other 3.3V loads. Estimated: VDD load current is typically 4-7 mA active at 48 MHz and below 1 µA in sleep, so the bulk capacitor is sized for the worst-case digital noise burst during ADC conversions rather than steady-state current.
Several common pitfalls catch first-time users of the PIC16LF1458-E/P. First, the LF variant cannot be powered from a 5V rail - if your design supplies 5V on VDD the part will be damaged; use the F variant or add a 3.3V LDO. Second, the USB peripheral requires the CONFIG1 register to enable the internal USB regulator and clock source; a device that enumerates erratically usually has CONFIG1 misconfigured. Third, the VCAP pin (RA0/AN0 shared) must have a 1 µF capacitor to ground when the internal regulator is enabled - omitting this prevents the core from starting. Finally, MCLR (pin 1) must be tied to VDD through a 10 kohm resistor for normal operation; leaving it floating causes intermittent resets.
For the 20-pin PDIP package, place decoupling capacitors as close as practical to VDD (pin 20) and VSS (pins 6 and 19). The PDIP package handles through-hole insertion and is forgiving for hand-soldered prototypes, but for production designs consider migrating to the QFN or SOIC variants on the same silicon die. The 20-pin PDIP does not have an exposed thermal pad, so thermal management is rarely a concern at the LF1458's typical power levels (well under 100 mW). If the design routes the USB D+/D- lines, keep them matched in length and place the 27 ohm series resistors within 5 mm of the MCU pins to meet USB 2.0 signal-integrity requirements.
合规信息
RoHS compliance per Fly-wing Electronics distributor listing (3rd-party verified). Microchip's full material declaration datasheet should be consulted for halogen-free status. AEC-Q100 is not applicable because the LF1458 is not marketed as automotive-grade.
