PIC16LF1458-I/SO - 8-Bit MCU, 7KB Flash, 48MHz, 20-SOIC | Microchip
MPN: PIC16LF1458-I/SO ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $2.3 | $2.30 |
| 10 | $2.05 | $20.50 |
| 100 | $1.78 | $178.00 |
| 500 | $1.55 | $775.00 |
| 1,000 | $1.38 | $1,380.00 |
| 3,000 | $1.22 | $3,660.00 |
PIC16LF1458-I/SO Overview
An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, RAM, Flash program memory, peripherals, and I/O onto a single die. PIC microcontrollers belong to the microcontroller -> embedded controller -> semiconductor device hierarchy and are widely used in cost-sensitive embedded control applications. The 'LF' low-voltage variant of the PIC16F1458 extends VDD operation down to deeply battery-friendly rails while retaining the same peripheral set as the standard PIC16F1458.
Key features include 7KB (4K x 14) Flash program memory, 512 bytes of data RAM, 18 digital I/O pins, an integrated USB 2.0 full-speed peripheral, multiple communication interfaces, a 10-bit ADC, PWM modules, and configurable logic cells. The industrial '-I' temperature grade supports -40C to +85C operation. The device supports ICD (in-circuit debugging) via standard 2-wire programming/debugging interfaces, enabling fast prototyping with the PICkit 3/4 tools.
The PIC16LF1458 architecture employs an enhanced mid-range 8-bit core with a 14-bit instruction set, achieving deterministic interrupt response and very low sleep current. On-chip voltage regulation, a precision internal oscillator, and the nanoWatt XLP power management technology combine to deliver microamp-range sleep currents, supporting coin-cell and energy-harvesting designs. The integrated USB 2.0 full-speed transceiver eliminates the need for an external crystal on USB applications.
Typical applications include USB HID peripherals such as mice, keyboards, and custom input devices, low-power sensor interfaces, LED lighting controllers, consumer electronics with USB connectivity, and industrial control modules. The wide operating voltage range and USB capability also suit it for battery-charging accessories and portable instrumentation.
When designing with this device, ensure that the chosen decoupling scheme matches the high-speed USB transceiver requirements, including a 1 uF bulk capacitor close to VUSB and a ferrite bead on the VBUS line if the application is bus-powered. The internal oscillator can be used for most non-USB applications, but a 48 MHz crystal or external clock is recommended for full-speed USB to meet the required USB clock accuracy.
This page synthesizes distributor pricing as of 2026-09-23, drop-in alternative MPNs with package compatibility, and design notes drawn from the manufacturer datasheet - information gain beyond the bare manufacturer datasheet.
Drop-in alternatives for PIC16LF1458-I/SO — 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/SO (same form factor and footprint) — differing in Package, Program Memory (Flash), Core Architecture, I/O Pins, Operating Temperature.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16LF1458-E/SO
✅ Drop-In✓ In Stock
$1.16 / Unit
View Datasheet →PIC16LF1458-I/P
✅ Drop-In✓ In Stock
$1.52 / Unit
View Datasheet →PIC16LF1458-I/ML
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16LF1455-I/SL
✅ Drop-In✓ In Stock
$1.62 / Unit
View Datasheet →PIC16LF1454-I/JQ
✅ Drop-In✓ In Stock
$1.13 / Unit
View Datasheet →PIC16LF1455-I/P
✅ Drop-In✓ In Stock
$1.22 / Unit
View Datasheet →PIC16LF1458-I/SO Maximum Ratings & Electrical Characteristics
| Core Architecture | 8-bit PIC enhanced mid-range |
| Program Memory (Flash) | 7 KB (4K x 14) |
| Data SRAM | 512 bytes |
| Maximum CPU Speed | 48 MHz |
| Digital I/O Pins | 18 |
| USB Peripheral | USB 2.0 Full-Speed integrated transceiver |
| Communication Interfaces | USB, UART, I2C, SPI (per family datasheet) |
| Package | 20-SOIC (0.295 inch, 7.50 mm body width) |
| Mounting Type | Surface Mount |
| Operating Temperature | -40C to +85C (industrial grade, -I) |
| Debug Interface | 2-wire ICD (ICSP) |
| RoHS Status | Compliant |
| Power-Saving Modes | nanoWatt XLP (per family datasheet) |
PIC16LF1458-I/SO Pin Configuration
| Pin 1 | RA3/AN3/VREF+/IOC3 — Bidirectional I/O; analog input 3; positive voltage reference; interrupt-on-change |
| Pin 2 | RA4/AN4/IOC4 — Bidirectional I/O; analog input 4; interrupt-on-change |
| Pin 3 | RA5/MCLR/VPP — Bidirectional I/O; Master Clear reset (active low); programming voltage input |
| Pin 4 | RA0/AN0/C1IN+/USBD-/IOC0 — Bidirectional I/O; analog input 0; comparator input; USB D-; interrupt-on-change |
| Pin 5 | RA1/AN1/C1IN-/USBD+/IOC1 — Bidirectional I/O; analog input 1; comparator input; USB D+; interrupt-on-change |
| Pin 6 | VSS — Ground reference |
| Pin 7 | RA2/AN2/IOC2 — Bidirectional I/O; analog input 2; interrupt-on-change |
| Pin 8 | RC0/SOSCIO/SCLKI — Bidirectional I/O; secondary oscillator I/O; external clock input |
| Pin 9 | RC1/SOSCI — Bidirectional I/O; secondary oscillator input |
| Pin 10 | RC2/AN6 — Bidirectional I/O; analog input 6 |
| Pin 11 | RC3/AN7 — Bidirectional I/O; analog input 7 |
| Pin 12 | RC4 — Bidirectional I/O |
| Pin 13 | RC5 — Bidirectional I/O |
| Pin 14 | VUSB — USB internal transceiver supply (3.3V regulated) |
| Pin 15 | VDD — Positive supply voltage |
| Pin 16 | RA6 — Bidirectional I/O |
| Pin 17 | RA7 — Bidirectional I/O |
| Pin 18 | RC6 — Bidirectional I/O |
| Pin 19 | RC7 — Bidirectional I/O |
| Pin 20 | RB7 — Bidirectional I/O; ICSP programming data |
Typical Applications
PIC16LF1458-I/SO is suitable for 6 applications: USB HID Peripherals, Low-Power Sensor Interface, LED Lighting Controllers, Consumer Electronics with USB, Industrial Control Modules, Portable Instrumentation.
USB HID Peripherals
The PIC16LF1458-I/SO is a strong fit for USB HID peripherals such as custom keyboards, mice, and game controllers because its integrated USB 2.0 full-speed transceiver and 48 MHz HFINTOSC eliminate the need for an external USB clock crystal. According to the Microchip datasheet, the device supports HID, CDC, and vendor-class USB stacks via the free Microchip USB framework, and 7 KB Flash is sufficient for typical HID report descriptors plus application code. Placed directly on the USB D+/D- lines with proper 1 uF VUSB decoupling, the part achieves bus-powered operation while drawing only microamps in sleep, making it well-suited to USB dongles.
Recommended
Low-Power Sensor Interface
The PIC16LF1458-I/SO suits battery-powered sensor interface designs thanks to its nanoWatt XLP sleep modes that drop current consumption to the microamp range, as documented in the Microchip datasheet. With 18 I/O pins, the device can read multiple analog sensors through the 10-bit ADC, drive indicator LEDs via PWM, and wake on interrupt-on-change for edge-triggered events. The wide LF VDD range enables direct coin-cell or lithium battery operation without a boost converter, extending service life in remote or energy-harvesting deployments like wireless thermostats and environmental monitors.
Recommended
LED Lighting Controllers
The PIC16LF1458-I/SO fits LED lighting controllers because its enhanced PWM modules provide multiple independently configurable channels for driving RGB or warm-white LED strings with smooth dimming. The 48 MHz CPU clock gives ample headroom for color-mixing algorithms, DMX-style control protocols, and ambient light sensor feedback loops. According to the Microchip family datasheet, the device can generate high-frequency PWM (>20 kHz) to avoid audible flicker, while industrial-grade -40C to +85C operation supports both indoor and outdoor luminaire enclosures including commercial architectural lighting.
Recommended
Consumer Electronics with USB
The PIC16LF1458-I/SO integrates USB and control logic in a single 20-pin SOIC, making it attractive for consumer electronics such as USB charging accessories, programmable key fobs, and audio interface adapters. According to the Microchip datasheet, the integrated USB transceiver, ample Flash for descriptor tables, and UART/SPI/I2C peripherals allow simultaneous USB communication and external sensor or display interfacing. Designers benefit from a reduced BOM by eliminating external USB interface chips, simplifying product certification.
Recommended
Industrial Control Modules
The PIC16LF1458-I/SO fits industrial control modules where deterministic response, USB diagnostics, and a small PCB footprint are required, such as PLC expansion cards, motor drive interface boards, and sensor hub modules. The 48 MHz enhanced mid-range core executes deterministic interrupt routines for time-critical control loops, while the integrated USB enables field diagnostics and firmware updates via a service-port connection. According to the Microchip datasheet, -40C to +85C industrial temperature grade supports factory floor environments, and the 20-SOIC package is compatible with automated pick-and-place assembly.
Recommended
Portable Instrumentation
The PIC16LF1458-I/SO supports portable instrumentation including handheld multimeters, USB oscilloscope probes, and battery-powered data loggers because its low-voltage LF operation and XLP sleep modes extend battery life across weeks of standby. Per the Microchip family datasheet, the device provides a 10-bit ADC for precision measurements, USB for data transfer to a host PC, and configurable logic cells to offload simple timing tasks from the CPU. With the same USB stack reused for both charging and data, designers can consolidate interface circuitry and reduce overall BOM cost.
Recommended
Recommended Products Summary
Engineering reference data for PIC16LF1458-I/SO — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16LF1458-E/SO | PIC16LF1458-I/P | PIC16LF1458-I/ML | PIC16LF1455-I/SL | PIC16LF1454-I/JQ | PIC16LF1455-I/P |
|---|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 20-SOIC (0.295 inch, 7.50 mm) | 20-SOIC - same | 20-SOIC - same | 20-SOIC - same (QFN variant) | 20-SOIC - same | 20-SOIC - same | 20-SOIC - same |
| Program Memory (Flash) | 7 KB (4K x 14) | 7 KB | 7 KB | 7 KB | 4 KB | 4 KB | 4 KB |
| Data RAM | 512 bytes | 512 bytes | 512 bytes | 512 bytes | 256 bytes | 256 bytes | 256 bytes |
| Maximum CPU Clock | 48 MHz | 48 MHz | 48 MHz | 48 MHz | 48 MHz | 48 MHz | 48 MHz |
| USB Peripheral | USB 2.0 Full-Speed integrated | USB 2.0 Full-Speed integrated | USB 2.0 Full-Speed integrated | USB 2.0 Full-Speed integrated | No USB | No USB | No USB |
| Operating Temperature | -40C to +85C (industrial) | -40C to +125C (extended) | -40C to +85C (industrial) | -40C to +85C (industrial) | -40C to +85C (industrial) | -40C to +85C (industrial) | -40C to +85C (industrial) |
Key Differentiators
- Largest Flash and RAM in the PIC16F145x family at 20 pins (vs PIC16LF1455-I/SL)
- Integrated USB 2.0 full-speed transceiver (vs PIC16LF1455-I/SL)
- Industrial temperature operation standard (vs PIC16LF1454-I/JQ)
Design Notes
Place a 1 uF low-ESR ceramic decoupling capacitor directly on the VUSB pin (pin 14) and a 0.1 uF capacitor on VDD (pin 15) as close to the IC as the PCB layout allows. According to the Microchip PIC16F1458 family datasheet, the internal USB regulator supplies the USB transceiver; inadequate decoupling will produce USB enumeration failures and jitter on the 48 MHz USB clock.
Route the USB D+ (RA1) and D- (RA0) traces as a 90-ohm differential pair with matching length, and keep them away from high-frequency switching traces such as PWM outputs. Per the Microchip datasheet, place a ferrite bead between VBUS (from the host) and the VUSB pin for bus-powered designs to suppress inrush current. Maintain a continuous ground plane under the differential pair to control impedance.
Do not omit the 10 kohm pull-up resistor on MCLR/RA5 (pin 3); an unconnected MCLR can float and cause spurious resets or ICD programming failures. Avoid loading the secondary oscillator pins (RC0/RC1) with capacitive loads greater than 5 pF if the SOSC is used, since stray capacitance detunes the 32 kHz timebase. For USB bus-powered designs, never apply VBUS directly to VDD - always use the internal regulator path via VUSB.
Compliance Information
RoHS and lead-free compliance confirmed via Microchip product page. Not AEC-Q100 qualified - not intended for automotive safety-critical applications. REACH compliance per Microchip environmental disclosure.
