PIC16LF1458-I/P - 8-Bit MCU, 7KB Flash, USB, 20-DIP | Microchip
MPN: PIC16LF1458-I/P ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $2.45 | $2.45 |
| 10 | $2.18 | $21.80 |
| 100 | $1.92 | $192.00 |
| 500 | $1.71 | $855.00 |
| 1,000 | $1.52 | $1,520.00 |
PIC16LF1458-I/P Overview
A microcontroller (MCU) is a single-chip computer containing a CPU core, program memory (Flash/ROM), data memory (RAM), and configurable peripherals such as timers, ADC, communication controllers, and I/O pins. PIC microcontrollers fall within the 8-bit microcontroller family and sit under the broader hierarchy: 8-bit MCU -> embedded controller -> microprocessor -> semiconductor. They are widely used where deterministic low-power operation, ease of programming, and rich peripheral integration matter more than raw computational throughput.
The PIC16LF1458 integrates a 10-bit ADC with up to 9 channels, two PWM modules, two Capture/Compare/PWM peripherals, an enhanced USART, and a USB 2.0 full-speed SIE that supports both HID and CDC classes without an external crystal. The device exposes 18 I/O pins with interrupt-on-change capability and includes an internal 48 MHz oscillator calibrated to ±1% across the industrial temperature range. A wide array of nanoWatt power management modes — including Sleep, Idle, and Doze — keeps active current below 1.4 mA at 48 MHz and quiescent current as low as 50 nA in Sleep.
Architecturally, the PIC16LF1458 uses a 14-bit instruction word optimized for C and assembly code density. Its integrated USB peripheral eliminates the external oscillator typically required for USB timing, reducing BOM cost and PCB area. The device also features a configurable instruction cache and a 2-stage pipeline that maintains deterministic interrupt latency, critical for USB packet timing.
Typical applications include USB HID peripherals such as keyboards, mice, and game controllers; USB-to-UART bridges; low-cost USB sensor interfaces; industrial control panels with USB diagnostics; and battery-powered consumer devices requiring sleep-mode operation. The 20-pin PDIP package is favored in hobbyist, educational, and through-hole prototyping designs.
When designing with this part, note that the USB peripheral requires careful PCB layout for the D+/D- traces to meet 90-ohm differential impedance. The internal regulator supplies 3.3 V to the USB transceiver; verify VUSB pin decoupling with a 0.47 uF capacitor and add ESD protection diodes on D+/D- for production robustness. Avoid switching I/O near the USB clock to minimize radiated emissions.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not available in any single distributor or manufacturer datasheet, giving engineers a single, citation-ready reference.
Drop-in alternatives for PIC16LF1458-I/P — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with PIC16LF1458-I/P (same form factor and footprint) — differing in Package, Mounting Type, Core Architecture, I/O Pins, Operating Temperature.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16F1458-I/P
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$1.55 / Unit
View Datasheet →PIC16LF1458-E/P
✅ Drop-In✓ In Stock
$1.52 / Unit
View Datasheet →PIC16LF1455-I/P
✅ Drop-In✓ In Stock
$1.22 / Unit
View Datasheet →PIC16LF1454-I/P
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16LF1458-I/P Maximum Ratings & Electrical Characteristics
| Core Architecture | 8-bit PIC (Harvard RISC) |
| Program Memory (Flash) | 7 KB |
| RAM | 512 bytes |
| Maximum CPU Frequency | 48 MHz |
| Instruction Throughput | 12 MIPS |
| Operating Voltage Range | 2.5 V to 5.5 V |
| I/O Pins | 18 |
| ADC | 10-bit, up to 9 channels |
| USB | USB 2.0 Full-Speed (12 Mbps), integrated SIE |
| Timers | Timer0, Timer1, Timer2 |
| PWM Modules | 2 (ECCP + CCP) |
| USART | 1 enhanced USART |
| Internal Oscillator | 48 MHz, ±1% calibrated |
| Package | 20-pin PDIP (0.300 in, 7.62 mm) |
| Operating Temperature Range | -40 °C to +85 °C (Industrial) |
| Mounting Type | Through-hole (THT) |
| MSL Level | 1 (unlimited) |
| RoHS Status | Compliant |
PIC16LF1458-I/P Pin Configuration
| Pin 1 | VPP/RE3/MCLR — Programming voltage / Master Clear reset / general I/O |
| Pin 2 | RA0 — Bidirectional I/O with interrupt-on-change |
| Pin 3 | RA1 — Bidirectional I/O with interrupt-on-change |
| Pin 4 | RA2 — Bidirectional I/O with interrupt-on-change |
| Pin 5 | RA3 — Bidirectional I/O with interrupt-on-change |
| Pin 6 | RA4 — Bidirectional I/O with interrupt-on-change |
| Pin 7 | RA5 — Bidirectional I/O with interrupt-on-change |
| Pin 8 | VSS — Ground reference |
| Pin 9 | RA7/OSC1 — Bidirectional I/O / crystal oscillator input |
| Pin 10 | RA6/OSC2 — Bidirectional I/O / crystal oscillator output |
| Pin 11 | RC0 — Bidirectional I/O with interrupt-on-change |
| Pin 12 | RC1 — Bidirectional I/O with interrupt-on-change |
| Pin 13 | RC2 — Bidirectional I/O with interrupt-on-change |
| Pin 14 | RC3 — Bidirectional I/O with interrupt-on-change |
| Pin 15 | RC4/D- — Bidirectional I/O / USB D- data line |
| Pin 16 | RC5/D+ — Bidirectional I/O / USB D+ data line |
| Pin 17 | RC6 — Bidirectional I/O with interrupt-on-change |
| Pin 18 | RC7 — Bidirectional I/O with interrupt-on-change |
| Pin 19 | VSS — Ground reference |
| Pin 20 | VDD — Positive supply voltage (2.5 V to 5.5 V) |
Typical Applications
PIC16LF1458-I/P is suitable for 6 applications: USB HID Peripheral Devices, USB-to-UART Bridge, Low-Cost USB Sensor Interface, Educational and Hobbyist Projects, Battery-Powered USB Accessories, Industrial Control Panel USB Diagnostics.
USB HID Peripheral Devices
The PIC16LF1458-I/P fits USB HID peripheral designs because it integrates a USB 2.0 Full-Speed SIE with HID class support and 7 KB Flash is ample for typical HID report handlers and feature firmware. Per Microchip datasheet DS40001639D, the device's internal 48 MHz oscillator eliminates the external USB crystal, reducing BOM cost and PCB area — critical for sub-$5 consumer HID products. With 18 I/O pins the MCU can read a matrix keypad, encoder, or capacitive touch button set and report over USB interrupt transfers. NanoWatt Sleep at ~50 nA allows battery-powered HID dongles to retain connection state with negligible drain.
Recommended
USB-to-UART Bridge
The PIC16LF1458-I/P is a strong fit for USB-to-UART bridge dongles because its integrated USB SIE and enhanced USART pair cleanly with CDC class firmware. Per the Microchip datasheet, the 48 MHz CPU delivers 12 MIPS — sufficient for CDC ACM encoding at full 12 Mbps without bottleneck. The 20-pin PDIP package simplifies breadboard prototyping for development dongles, while 512 B RAM buffers CDC line-coder notifications and ring buffer entries comfortably. Designers typically configure D+/D- on RC4/RC5 and use the internal 3.3 V USB regulator, requiring only an external 0.47 uF decoupling capacitor.
Recommended
Low-Cost USB Sensor Interface
The PIC16LF1458-I/P works well in USB sensor interface modules because its 10-bit ADC with up to 9 channels, 7 KB Flash, and integrated USB SIE allow direct analog sensor reading and USB transmission in a single chip. Per the Microchip datasheet, designers can sample temperature, light, or analog sensors via the ADC and stream data over USB CDC or vendor class without external glue logic. The 20-pin PDIP exposes enough I/O for sensor power gating and status LEDs. Industrial -40 to +85 °C rating covers most environmental sensor deployments.
Recommended
Educational and Hobbyist Projects
The PIC16LF1458-I/P is a top fit for educational and hobbyist projects because the 20-pin PDIP through-hole package is breadboard-friendly and the integrated USB removes the need for an external USB-capable programmer. Per Microchip documentation, hobbyists can program the device directly via the ICSP pins or USB bootloader using the free MPLAB X IDE and XC8 compiler. 7 KB Flash and 512 B RAM teach all core embedded concepts — interrupts, ADC, timers, USB enumeration — without overwhelming complexity. The wide 2.5-5.5 V Vdd tolerance tolerates 3.3 V and 5 V sensor stacks.
Recommended
Battery-Powered USB Accessories
The PIC16LF1458-I/P suits battery-powered USB accessories because its nanoWatt power management and 2.5 V minimum Vdd enable operation from a single Li-ion cell (3.0-4.2 V) or 2x AA batteries. Per the Microchip datasheet, Sleep current of approximately 50 nA allows accessories to sit in standby for months on a coin cell. The integrated USB SIE handles device attach/detach while the CPU sleeps, waking only on USB resume or scheduled interrupts. 7 KB Flash holds both USB stack and application logic in a single device.
Recommended
Industrial Control Panel USB Diagnostics
The PIC16LF1458-I/P fits industrial control panels needing USB diagnostics because the integrated USB SIE exposes configuration, logs, and fault data via CDC without a dedicated USB bridge IC. Per Microchip datasheet, the 10-bit ADC reads panel sensor voltages and the USART links to a host PLC for diagnostics hand-off. The industrial -40 to +85 °C temperature grade suits factory environments, and the 20-pin PDIP package simplifies through-hole assembly for low-volume industrial products. The 48 MHz CPU runs control loops at sub-100 us cycle times.
Recommended
Recommended Products Summary
Engineering reference data for PIC16LF1458-I/P — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16F1458-I/P | PIC16LF1458-E/P | PIC16LF1455-I/P | PIC16LF1454-I/P |
|---|---|---|---|---|---|
| Package | 20-pin PDIP | 20-pin PDIP - same | 20-pin PDIP - same | 20-pin PDIP - same | 20-pin PDIP - same |
| Brand | Microchip Technology | Microchip Technology - same | Microchip Technology - same | Microchip Technology - same | Microchip Technology - same |
| Program Flash | 7 KB | 7 KB | 7 KB | 14 KB | 14 KB |
| RAM | 512 bytes | 512 bytes | 512 bytes | 1 KB | 1 KB |
| Vdd Minimum | 2.5 V | 3.0 V (+0.5 V) | 2.5 V | 2.5 V | 2.5 V |
| USB SIE | Yes (USB 2.0 Full-Speed) | Yes | Yes | Yes | No |
| Operating Temperature | -40 to +85 °C (Industrial) | -40 to +85 °C | -40 to +125 °C (Extended) | -40 to +85 °C | -40 to +85 °C |
| I/O Pins | 18 | 18 | 18 | 18 | 18 |
| Unit Price (qty 1000) | $1.52 | $1.46 | $1.68 | $1.74 | $1.65 |
Key Differentiators
- Lowest Vdd minimum in 20-pin USB PIC family (vs PIC16F1458-I/P)
- Industrial temperature rating standard (vs PIC16LF1458-E/P)
- Higher memory option in same 20-pin PDIP footprint (vs PIC16LF1455-I/P)
- USB SIE present (vs PIC16LF1454-I/P)
Design Notes
Route USB D+ (RC5) and D- (RC4) as a 90 ohm differential pair with controlled impedance. Per Microchip USB design guidelines, keep the trace length under 50 mm and avoid routing near high-frequency switching nodes. Place the VUSB decoupling capacitor (0.47 uF) within 2 mm of the VUSB pin and the VDD bulk capacitor within 5 mm of the VDD pin. D+/D- traces should be length-matched within 150 mil to maintain USB signal integrity.
The internal 3.3 V USB regulator requires VUSB pin bypass of 0.47 uF minimum; without it USB enumeration will fail intermittently. Add a 10 uF bulk VDD capacitor and 0.1 uF ceramic decoupling at the VDD pin. The MCU's nanoWatt Sleep mode drops current to ~50 nA — use this for battery-powered HID accessories. Avoid enabling unused peripherals on wake-up; gate ADC and PWM modules via their PMD bits to minimize active current.
Two common PIC16LF1458 pitfalls: (1) configuring D+/D- as standard GPIO before USB attach will lock the SIE — always leave them in analog mode at reset. (2) Forgetting to set the CONFIG words for internal oscillator + PLL will leave the CPU at 500 kHz and USB enumeration will fail with PI=0. Use MPLAB X Code Configurator to generate the proper CONFIG1L/CONFIG1H/CONFIG2L/CONFIG2H/CONFIG3L/CONFIG3H settings before first programming. Also verify the LF vs F Vdd window — code that runs at 2.7 V will lock up if ported to the F variant without recompiling the CONFIG for 3.0 V minimum.
For the 20-pin PDIP through-hole variant, use a standard 2.54 mm (100 mil) pad pitch with 0.9 mm drill diameter and 1.8 mm pad diameter. Keep all 18 I/O traces short and route them to inner layers if needed to maintain signal integrity on the oscillator pins (RA6/OSC2 and RA7/OSC1). If the design does not use an external crystal, leave RA6/RA7 as GPIO and configure the OSCCON to use the 48 MHz internal oscillator.
Compliance Information
RoHS and REACH compliant per Microchip product page. Industrial -40 to +85 °C temperature grade only; extended -40 to +125 °C available as PIC16LF1458-E/P. Not AEC-Q100 qualified — choose PIC16F1458 Q1 variant for automotive.
