PIC16F1458-I/P - 8-Bit USB MCU, 7KB Flash, 20-PDIP | Microchip
MPN： PIC16F1458-I/P ✓ 啟用中PIC16F1458-I/P 概覽
A microcontroller (MCU) is a single-chip computer that integrates a CPU, program memory, working RAM, non-volatile data EEPROM, and programmable peripherals. PIC microcontrollers use a modified Harvard RISC architecture with a 14-bit instruction word and a separate data bus; they sit at the bottom tier of the embedded computing hierarchy (MCU -> 8-bit microcontroller -> embedded processor) and are deployed wherever deterministic control of simple peripherals (buttons, LEDs, sensors, USB) is needed. The 8-bit core remains popular because it costs less per IO than 32-bit Cortex-M parts and consumes far less active current.
Key features of the PIC16F1458 include 7KB Flash, 512 bytes RAM, 256 bytes EEPROM, a 48 MHz internal oscillator with 4x PLL producing the 48 MHz USB clock, a 10-bit ADC up to 100 ksps, two comparators, PWM, I2C/SPI/EUSART, and the integrated USB 2.0 full-speed transceiver. It also adds a 5-bit DAC for USB termination, an on-chip voltage regulator (3.3V) that powers the internal USB transceiver from a 5V bus, and the XLP nanower sleep current rating.
USB integration is the defining architectural feature. The 48 MHz system clock is generated from the 16 MHz HFINTOSC and the 3x PLL, which the USB SIE requires. The transceiver includes internal pull-up resistors and 1.5 kΩ pull-up is configurable in firmware, so no external USB pull-up is required. Because the device can self-power the transceiver from VBUS (5V) and present itself as either a bus-powered HID, CDC, or custom endpoint, the BOM for a small USB peripheral shrinks to a connector, two bypass caps, and the MCU.
Typical applications include USB HID peripherals (keyboards, mice, custom input devices), USB-to-UART bridges, USB MIDI controllers, low-cost data loggers, sensor-to-USB adapters, battery-powered instruments, and industrial control nodes. The 20-pin PDIP package is breadboard-friendly and well suited to prototyping, hobbyist designs, and low-volume through-hole assemblies where socketed replacement is desirable.
When designing with this part, ensure VBUS is connected to pin 14 so the internal USB 3.3V regulator can bias the transceiver, and add 0.1 uF ceramic bypass on VDD and VUSB. The 48 MHz system clock requires PLL configuration after every Fosc startup and is required for any USB transaction. Do not exceed 5.5V on VDD or apply VBUS before VDD.
This page synthesizes distributor pricing for 20-PDIP stock, same-package PIC16F family drop-in alternatives, and practical design notes not aggregated on any single datasheet page.
直接替換替代品，適用於 PIC16F1458-I/P — 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/P （相同外形與佔位） — 差異在於 Package, ADC, Timers, Operating Temperature, Mounting Type.
PIC16F1454-I/P
✅ 直接替換聯絡詢價
查看資料表 →PIC16F1455-I/P
✅ 直接替換聯絡詢價
查看資料表 →PIC16F1459-I/P
✅ 直接替換聯絡詢價
查看資料表 →PIC16F1454-E/P
✅ 直接替換聯絡詢價
查看資料表 →PIC16F1458-I/P 最大額定值與電氣特性
| Core Architecture | PIC 8-bit RISC (Harvard) |
| Program Memory | 7 KB (4K x 14) Flash |
| Data RAM | 512 bytes |
| Data EEPROM | 256 bytes |
| Maximum CPU Frequency | 48 MHz |
| Operating Voltage Range | 2.4 V to 5.5 V |
| USB Interface | USB 2.0 Full-Speed (12 Mbps) Device |
| I/O Pins | 17 |
| ADC | 10-bit, up to 9 channels, 100 ksps |
| DAC | 5-bit |
| Comparators | 2 |
| PWM Modules | Yes (CCP/ECCP) |
| Communication | I2C, SPI, EUSART |
| Timers | Timer0, Timer1, Timer2 |
| 封裝 | 20-pin PDIP (0.300 inch / 7.62 mm) |
| 安裝類型 | Through-Hole |
| 工作溫度 | -40 C to +85 C (Industrial) |
| MSL 等級 | 1 (not moisture sensitive) |
| RoHS 狀態 | Compliant |
| Lead-Free | Yes |
PIC16F1458-I/P 腳位配置
| 腳位 1 | VDD — Positive supply voltage |
| 腳位 2 | RA5 — Digital I/O / analog input |
| 腳位 3 | RA4 — Digital I/O |
| 腳位 4 | RA3 — Digital I/O / MCLR |
| 腳位 5 | RC5 — Digital I/O |
| 腳位 6 | RC4 — Digital I/O |
| 腳位 7 | RC3 — Digital I/O |
| 腳位 8 | RC6 — Digital I/O |
| 腳位 9 | RC7 — Digital I/O |
| 腳位 10 | RB7 — Digital I/O |
| 腳位 11 | RB6 — Digital I/O |
| 腳位 12 | RB5 — Digital I/O |
| 腳位 13 | RB4 — Digital I/O |
| 腳位 14 | VUSB — USB 3.3V regulator output / VBUS sense |
| 腳位 15 | D- — USB D- data line |
| 腳位 16 | D+ — USB D+ data line |
| 腳位 17 | RC0 — Digital I/O |
| 腳位 18 | RC1 — Digital I/O |
| 腳位 19 | RC2 — Digital I/O |
| 腳位 20 | VSS — Ground reference |
典型應用
PIC16F1458-I/P 適用於 6 應用s: USB HID Peripheral (Keyboard/Mouse/Custom HID), USB-to-UART Bridge / CDC Virtual COM Port, USB MIDI Controller, Battery-Powered Sensor-to-USB Adapter, Industrial Control Node / Data Logger, Hobbyist / Educational USB Development Platform.
USB HID Peripheral (Keyboard/Mouse/Custom HID)
The PIC16F1458-I/P is purpose-built for USB Human Interface Device peripherals thanks to its integrated USB 2.0 full-speed transceiver and 48 MHz system clock. With 7 KB of Flash and Microchip's free HID class stack, the MCU enumerates as a HID keyboard, mouse, game controller, or custom input device without an external transceiver, BOM cost held to two bypass caps and a USB connector.
推薦
USB-to-UART Bridge / CDC Virtual COM Port
The integrated USB SIE and on-chip 3.3 V regulator make the PIC16F1458-I/P a drop-in solution for USB-to-UART bridges via the CDC class. The 48 MHz core sustains 115200 baud and higher with full hardware flow control on EUSART, while 7 KB of Flash hosts Microchip's CDC stack with user command parser. Typical designs add only a USB connector and bypass capacitors to the BOM.
推薦
USB MIDI Controller
MIDI controllers require USB Full-Speed bulk or interrupt endpoints and deterministic timing - both delivered by the PIC16F1458-I/P. The 7 KB Flash holds a MIDI class descriptor plus button/encoder scanning code, while the on-chip comparators and ADC read analog controls without external components. The XLP sleep mode below 1 uA suits battery-powered floor controllers.
推薦
Battery-Powered Sensor-to-USB Adapter
The PIC16F1458-I/P is ideal for sensor-to-USB adapters that draw from coin cells or Li-ion batteries. XLP nanower sleep mode drops quiescent current below 1 uA between USB enumerations, while the 10-bit ADC and I2C/SPI peripherals read most low-bandwidth sensors. The internal 3.3 V regulator from VBUS allows the device to power itself from USB and run sensors from the same rail.
推薦
Industrial Control Node / Data Logger
The 20-pin PDIP package, 2.4-5.5 V supply range, and 256-byte EEPROM make the PIC16F1458-I/P a strong fit for industrial control nodes with USB diagnostics. The PIC16F1454-E/P (-40 C to +125 C extended) shares the same footprint and USB capability for harsher enclosures. On-chip EEPROM retains calibration data across power cycles without external storage.
推薦
Hobbyist / Educational USB Development Platform
The 20-pin PDIP variant is breadboard-friendly and supported by Microchip's Curiosity development platform and MPLAB X IDE with free C compiler. Hobbyists and educators can prototype USB peripherals, MIDI controllers, and sensor adapters without external programmers thanks to the on-chip debug. The 7 KB Flash covers typical class-compliant USB firmware with room to spare.
推薦
推薦產品摘要
工程參考資料，適用於 PIC16F1458-I/P — 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/P | PIC16F1455-I/P | PIC16F1459-I/P | PIC16F1454-E/P |
|---|---|---|---|---|---|
| Package | 20-PDIP | 20-PDIP - same | 20-PDIP - same | 20-PDIP - same | 20-PDIP - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Flash | 7 KB (4K x 14) | 7 KB | 14 KB | 14 KB | 7 KB |
| Data RAM | 512 bytes | 512 bytes | 1024 bytes | 1024 bytes | 512 bytes |
| Maximum CPU Frequency | 48 MHz | 48 MHz | 48 MHz | 48 MHz | 48 MHz |
| USB 2.0 Full-Speed | Yes (integrated) | Yes | Yes | Yes | Yes |
| Operating Voltage | 2.4 V to 5.5 V | 2.4 V to 5.5 V | 2.4 V to 5.5 V | 2.4 V to 5.5 V | 2.4 V to 5.5 V |
| Temperature Grade | -40 C to +85 C (Industrial) | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +125 C (Extended) |
| Unit Price @ 100 pcs (approx) | $2.05 | $1.95 | $2.15 | $2.25 | $2.20 |
主要差異化特點
- Highest Flash memory in 20-PDIP for USB-only PIC16F sub-family (對比PIC16F1454-I/P)
- Lower cost than 14 KB sibling on identical footprint (對比PIC16F1455-I/P)
- Industrial temperature range standard on -I/P suffix (對比PIC16F1454-E/P)
設計說明
The PIC16F1458-I/P integrates a 3.3 V LDO on the VUSB pin that powers the USB transceiver from a 5 V VBUS rail. Tie VBUS through the internal regulator to VUSB, then add 0.1 uF and 10 uF ceramics close to pin 14. The MCU core remains on VDD (2.4-5.5 V); the VUSB rail must not be loaded externally as it is sized only for the transceiver.
USB Full-Speed requires a 48 MHz system clock with 0.25% accuracy, derived from the 16 MHz HFINTOSC + 3x PLL. Configure the active clock source and PLL via OSCCON before enabling the USB module. The 31 kHz LFINTOSC supports XLP sleep but cannot be used for USB transactions; expect PLL relock latency after waking from sleep.
Place 0.1 uF and 10 uF bypass capacitors within 5 mm of VDD (pin 1) and VSS (pin 20). Keep USB D+/D- traces short, matched in length, and routed as a 90-ohm differential pair per USB 2.0 specification. Avoid running digital signals across the D+/D- pair to minimize EMI coupling into the USB data path.
Common pitfalls: (1) Forgetting to enable the 3x PLL before USB module configuration; (2) Leaving the internal USB pull-up disabled, causing enumeration failure on host ports; (3) Drawing more than 8 mA from VUSB (the internal regulator is sized only for the transceiver, not for external loads); (4) Failing to set the CONFIG words for HS or XT oscillator when using an external crystal.
合規資訊
RoHS and REACH compliant per Microchip product page. Industrial temperature grade only - choose -E suffix variants for AEC-Q100-style extended temperature operation.
