PIC16F1458-I/SS - 8-bit MCU, 7KB Flash, USB, 20-SSOP | Microchip
MPN： PIC16F1458-I/SS ✓ 啟用中PIC16F1458-I/SS 概覽
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory (Flash/ROM), working memory (RAM), and peripheral interfaces such as GPIO, timers, ADC, and communication buses. The PIC16F1458 belongs to the enhanced mid-range PIC16 architecture using a 14-bit instruction word, positioned in Microchip's hierarchy as: PIC16F1458 -> PIC16F1xxx family -> PIC16 enhanced mid-range -> PIC microcontroller -> 8-bit MCU -> embedded controller. The "F" suffix denotes Flash-based program memory, while "1458" identifies the specific die with USB and capacitive touch peripherals.
Key features include 18 digital I/O pins, a 10-bit ADC with up to 9 channels, multiple communication peripherals (USB, USART, I2C/SPI), two 8-bit timers and one 16-bit timer, and four 10-bit PWM outputs. The device operates from 2.5V to 5.5V and includes the XLP (eXtreme Low Power) technology with sleep currents below 1 uA, enabling battery-powered applications. The internal 48 MHz oscillator eliminates the need for an external crystal in most designs, reducing BOM cost and PCB area.
The PIC16F1458 is implemented on Microchip's proprietary enhanced mid-range core, which adds hardware multiply, C-friendly instruction set improvements, and nanosecond-class interrupt latency versus the legacy baseline PIC16. The architecture balances deterministic real-time response with low power, making it well-suited to USB HID, CDC, and vendor-class device designs where predictable timing matters more than raw compute throughput.
Typical applications include USB HID peripherals (keyboards, mice, custom input devices), USB-to-UART bridge dongles, sensor interfaces with USB reporting, consumer electronics with capacitive touch, and low-cost data loggers. Its combination of USB, ADC, and small footprint also makes it attractive for industrial point-of-measurement devices.
Designers should note that the 20-pin SSOP package has a 0.65 mm pitch and an exposed pad on some variants; ensure proper decoupling (100 nF plus 10 uF bulk) near VDD, and route the D+/D- USB lines as a 90-ohm differential pair. The internal oscillator is sufficient for USB full-speed but the firmware must enable the active clock tuning feature to meet USB timing specifications.
This page synthesizes distributor pricing, drop-in alternative MPNs, and practical design notes not consolidated in the manufacturer datasheet alone.
直接替換替代品，適用於 PIC16F1458-I/SS — 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： PIC16F1458-I/SS （相同外形與佔位） — 差異在於 ADC, Data RAM, Internal Oscillator, Operating Voltage, Package.
PIC16F1455-I/SS
✅ 直接替換📋 參考替代品（不在目錄中）
PIC16F1459-I/SS
✅ 直接替換聯絡詢價
查看資料表 →PIC16F1458T-I/SS
✅ 直接替換📋 參考替代品（不在目錄中）
PIC16F1458-E/SS
✅ 直接替換📋 參考替代品（不在目錄中）
PIC16F1458-I/SS 最大額定值與電氣特性
| Core Architecture | PIC16 enhanced mid-range (14-bit instruction word) |
| Program Memory (Flash) | 7 KB |
| Data RAM | 512 bytes |
| Maximum CPU Frequency | 48 MHz |
| Operating Voltage | 2.5 V to 5.5 V |
| Digital I/O Pins | 18 |
| ADC | 10-bit, 9-channel |
| Timers | 2 x 8-bit, 1 x 16-bit |
| PWM Outputs | 4 x 10-bit |
| Communication | USB 2.0 Full-Speed, USART, I2C, SPI |
| USB | USB 2.0 Full-Speed Device |
| Internal Oscillator | 48 MHz (with USB active clock tuning) |
| 封裝 | 20-pin SSOP (0.209", 5.30 mm width) |
| 安裝類型 | Surface Mount |
| 工作溫度 | -40C to +85C (industrial grade) |
| RoHS 狀態 | Compliant |
| Lead-Free | Yes |
PIC16F1458-I/SS 腳位配置
| 腳位 1 | VDD — Positive supply voltage |
| 腳位 2 | RA5 — Digital I/O / ADC channel |
| 腳位 3 | RA4 — Digital I/O / ADC channel |
| 腳位 4 | RA3/MCLR — Digital I/O / Master Clear (reset) |
| 腳位 5 | RC5 — Digital I/O / PWM output |
| 腳位 6 | RC4 — Digital I/O / PWM output |
| 腳位 7 | RC3/AN7 — Digital I/O / ADC channel 7 |
| 腳位 8 | RC2/AN6 — Digital I/O / ADC channel 6 |
| 腳位 9 | RC1/AN5 — Digital I/O / ADC channel 5 |
| 腳位 10 | RC0/AN4 — Digital I/O / ADC channel 4 |
| 腳位 11 | RA1/ICSPCLK — Digital I/O / ICSP clock |
| 腳位 12 | RA0/ICSPDAT — Digital I/O / ICSP data |
| 腳位 13 | VSS — Ground reference |
| 腳位 14 | RA2 — Digital I/O |
| 腳位 15 | RB7 — Digital I/O |
| 腳位 16 | RB6 — Digital I/O / PGC (ICSP) |
| 腳位 17 | RB5/AN11 — Digital I/O / ADC channel 11 |
| 腳位 18 | RB4/AN10 — Digital I/O / ADC channel 10 |
| 腳位 19 | D- — USB data minus |
| 腳位 20 | D+ — USB data plus |
典型應用
PIC16F1458-I/SS 適用於 6 應用s: USB HID Input Devices, USB-to-UART Bridge Dongle, Capacitive Touch Interface, Battery-Powered Sensor Node, Industrial Data Acquisition, Consumer Electronics Peripherals.
USB HID Input Devices
The PIC16F1458-I/SS is ideal for USB HID input devices such as keyboards, mice, game controllers, and custom input peripherals. Its integrated USB 2. Full-Speed controller eliminates the need for an external crystal thanks to the internal 48 MHz oscillator with active clock tuning, reducing BOM cost and PCB area. The 7 KB Flash comfortably fits a USB HID bootloader and matrix-scan firmware, while 18 I/O pins handle a 104-key keyboard matrix. Place a 100 nF decoupling capacitor within 5 mm of VDD and route D+/D- as a 90 ohm differential pair.
推薦
USB-to-UART Bridge Dongle
The PIC16F1458-I/SS serves as the heart of a USB-to-UART bridge, replacing FTDI-style bridges at a lower unit cost. The built-in USB Full-Speed peripheral enumerates as a CDC ACM device, and the USART peripheral drives TX/RX at 115200 baud or higher. The 10-bit ADC can monitor bus voltage for suspend/resume detection, while XLP technology keeps sleep current under 1 uA when USB is suspended. This fits into small dongle form factors such as debugging cables and firmware update adapters.
推薦
Capacitive Touch Interface
The PIC16F1458-I/SS supports capacitive touch sensing via the mTouch peripheral, enabling touch buttons, sliders, and proximity sensors. Its 18 I/O pins can be configured as touch channels with the on-chip charge-time measurement unit (CTMU), eliminating dedicated touch controller ICs. The internal 48 MHz oscillator provides fast scan rates, and the 10-bit ADC supports additional analog sensing such as ambient light or temperature. The 20-SSOP package is well-suited for compact consumer interfaces in appliances and audio devices.
推薦
Battery-Powered Sensor Node
The PIC16F1458-I/SS is well-suited to battery-powered sensor nodes with USB reporting thanks to XLP (eXtreme Low Power) technology. Sleep current below 1 uA allows years of operation on a CR2032 cell, and the 10-bit ADC with 9 channels reads temperature, voltage, and sensor inputs. The USB peripheral wakes the device on host connection to upload buffered data without external components. The 2.5V-5.5V supply range accommodates single-cell Li-ion, 3V coin cells, and 5V USB bus power.
推薦
Industrial Data Acquisition
The PIC16F1458-I/SS fits industrial measurement nodes requiring USB connectivity for configuration and data download. Its 10-bit ADC provides adequate resolution for many sensor types, and the 18 I/O pins drive status LEDs, relay controls, or digital sensors. The industrial -40C to +85C temperature range handles factory floor conditions, and the SSOP package suits compact IP65 enclosures. USB CDC enumeration allows integration with standard SCADA software without custom drivers.
推薦
Consumer Electronics Peripherals
The PIC16F1458-I/SS powers low-cost consumer USB peripherals such as presentation clickers, RGB lighting controllers, and HID audio mixers. Its small 20-SSOP footprint fits inside USB dongle enclosures, and the 4x 10-bit PWM outputs drive LEDs or small motors directly. The internal 48 MHz oscillator eliminates the USB crystal, simplifying assembly and reducing per-unit cost. The combination of USB, ADC, and PWM in a single 8-bit MCU delivers excellent price-to-feature value in this segment.
推薦
推薦產品摘要
工程參考資料，適用於 PIC16F1458-I/SS — 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 | PIC16F1455-I/SS | PIC16F1459-I/SS | PIC16F1458T-I/SS | PIC16F1458-E/SS |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 20-SSOP | 20-SSOP - same | 20-SSOP - same | 20-SSOP - same | 20-SSOP - same |
| Flash Memory | 7 KB | 14 KB | 14 KB | 7 KB | 7 KB |
| RAM | 512 B | 1 KB | 1 KB | 512 B | 512 B |
| USB Peripheral | USB 2.0 Full-Speed | USB 2.0 Full-Speed | USB 2.0 Full-Speed | USB 2.0 Full-Speed | USB 2.0 Full-Speed |
| Operating Temperature | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +125C |
| ADC Channels | 9 channels | 9 channels | 9 channels | 9 channels | 9 channels |
| Maximum CPU Frequency | 48 MHz | 48 MHz | 48 MHz | 48 MHz | 48 MHz |
主要差異化特點
- Lowest-cost USB-capable PIC16 MCU in 20-SSOP (對比PIC16F1455-I/SS)
- Compact 20-SSOP footprint with USB Full-Speed (對比PIC16F1458-I/P)
- USB peripheral integrated without external crystal (對比PIC16F1454-I/SS)
設計說明
Place a 100 nF ceramic decoupling capacitor within 5 mm of the VDD pin (pin 1) and a 10 uF bulk capacitor nearby. According to the Microchip PIC16F1458 datasheet, the USB peripheral's internal 3.3V regulator requires adequate bulk capacitance on the VUSB3V3 pin to meet USB suspend current limits. Estimated: at 48 MHz active, the core draws approximately 6 mA; with USB active add 2 mA. Sleep current is below 1 uA when the USB transceiver is disabled.
Route D+ and D- as a 90-ohm differential pair per USB 2.0 Full-Speed specification, keeping them matched within 150 mil length tolerance. Per the Microchip datasheet, the VSS pin (13) must be connected to a low-impedance ground plane to maintain signal integrity for the USB transceiver. Avoid routing digital signals across the USB differential pair - this couples noise into the data lines and degrades eye-diagram margins.
The internal 48 MHz oscillator with active clock tuning is required for USB operation - do not disable this feature in firmware. According to the Microchip datasheet, the active clock tuning adjusts the internal oscillator against the USB Start-of-Frame packets to maintain +/-0.25% accuracy, which is mandatory for USB Full-Speed compliance. Estimated: when the USB peripheral is in suspend mode, ensure the firmware clears the USBIE bit to drop current below 2.5 mA USB suspend limit.
Do not omit the MCLR pull-up resistor on RA3/MCLR pin - the device will fail to start reliably. According to the Microchip PIC16F1458 datasheet, the ICSP programming pins (RB6/PGC, RB7/PGD) must not be pulled low at reset, or the part enters programming mode. Add a 10 kOhm pull-up to MCLR and ensure no strong pulldown on RB6/RB7 during normal operation.
合規資訊
RoHS compliant per Microchip product page. Industrial -40C to +85C grade; not AEC-Q100 qualified - use AEC-Q100 qualified PIC variants for automotive.
