PIC16F1458-E/SO - 7KB Flash 8-bit MCU USB 48MHz SOIC-20 | Microchip
MPN: PIC16F1458-E/SO โ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $2.35 | $2.35 |
| 10 | $2.1 | $21.00 |
| 100 | $1.78 | $178.00 |
| 500 | $1.52 | $760.00 |
| 1,000 | $1.3 | $1,300.00 |
PIC16F1458-E/SO Overview
A microcontroller (MCU) is a single-chip computer containing a CPU, non-volatile program memory, working RAM, and a configurable set of peripheral blocks. PIC microcontrollers use a Harvard bus architecture with separate program and data paths, plus RISC instruction set optimized for deterministic interrupt response. The PIC16F1458 sits inside Microchip's PIC16F1xxx mid-range line, which adds USB, capacitive touch sensing (mTouch) and improved peripherals on top of the classic mid-range core. In the system hierarchy it is a sub-category of microcontroller -> embedded controller -> semiconductor IC, optimized for cost-sensitive USB-enabled designs.
The part's headline features include 7KB self-programmable Flash, 256 bytes EEPROM, 18 general-purpose I/O pins, a 10-bit ADC with up to 9 channels, multiple PWM/Capture/Compare modules, and a hardware USB 2.0 full-speed transceiver that removes the need for an external PHY or precision 48 MHz crystal. Programmable under Microchip's MPLAB X IDE with the XC8 compiler, it supports in-circuit serial programming (ICSP) and low-power XLP sleep modes drawing under 1 uA.
Architecturally the device is built around the enhanced mid-range 14-bit instruction core with a two-stage pipeline and 8-level hardware stack, paired with a clock management block that can derive 48 MHz directly from the internal 16 MHz HFINTOSC via a 3x PLL. This eliminates an external high-frequency crystal for USB and simplifies BOM, while still supporting an external crystal oscillator for applications requiring clock accuracy beyond the internal oscillator's +/- 2% tolerance.
Typical applications include USB HID peripherals such as keyboards, mice and game controllers, USB-to-UART bridges, CDC virtual COM ports, low-cost human-interface dongles, capacitive touch buttons (mTouch), and small sensor hubs. The combination of on-chip USB, internal 48 MHz clock and tiny SOIC-20 footprint makes it a frequent choice when board area and BOM cost matter more than processing headroom.
When designing with this part, route the USB D+/D- pair as a 90-ohm differential with length matching, place the VBUS sense resistor near the connector, and provide at least 200 nF near the MCU's VDD/VCORE pins. Verify that downstream tools (MCC, USB stack examples) match the latest MPLAB X version for full register compatibility. This page consolidates distributor pricing, drop-in alternatives and practical design notes that go beyond what the standalone datasheet provides.
Drop-in alternatives for PIC16F1458-E/SO โ 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 PIC16F1458-E/SO (same form factor and footprint) โ differing in ADC, Core, EEPROM, I/O Pins, Package.
Quick Comparison Tool โ Select alternative parts for side-by-side comparison:
PIC16F1455-I/SL
โ Drop-Inโ In Stock
$1.55 / Unit
View Datasheet โPIC16F1458-I/SO
โ Drop-In๐ Reference alternative (not in catalog)
PIC16F1458-E/SO Maximum Ratings & Electrical Characteristics
| Series | PIC16F1458 (PICยฎ XLPโข 16F) |
| Core | Enhanced mid-range 8-bit (14-bit instruction) |
| Program Memory (Flash) | 7 KB |
| RAM | 512 bytes |
| EEPROM | 256 bytes |
| Operating Frequency | Up to 48 MHz (12 MIPS) |
| Supply Voltage (VDD) | 2.3 V to 5.5 V |
| Operating Temperature Range | -40 C to +125 C (E suffix) |
| I/O Pins | 18 |
| ADC | 10-bit, up to 9 channels |
| Timers | 3 (Timer0, Timer1, Timer2) |
| USB | USB 2.0 Full-Speed transceiver, integrated |
| Package | 20-pin SOIC (SO), 0.295 in / 7.50 mm body width |
| Mounting Type | Surface Mount |
| Oscillator | Internal 16 MHz HFINTOSC + 3x PLL for 48 MHz; external crystal supported |
| Programming | ICSP (In-Circuit Serial Programming), self-programmable Flash |
| RoHS Status | Compliant |
| Lead-Free | Yes |
PIC16F1458-E/SO Pin Configuration
| Pin 1 | MCLR/RE3 โ Master clear (reset) input or digital input RE3 |
| Pin 2 | RA0 โ Port A bit 0 / ICSPDAT / analog input |
| Pin 3 | RA1 โ Port A bit 1 / ICSPCLK / analog input |
| Pin 4 | RA2 โ Port A bit 2 / analog input |
| Pin 5 | RA3 โ Port A bit 3 / analog input |
| Pin 6 | RA4 โ Port A bit 4 / analog input |
| Pin 7 | RA5 โ Port A bit 5 / analog input |
| Pin 8 | VSS โ Ground reference |
| Pin 9 | OSC2/RA6 โ Crystal output or GPIO RA6 |
| Pin 10 | OSC1/RA7 โ Crystal input or GPIO RA7 |
| Pin 11 | RC0 โ Port C bit 0 |
| Pin 12 | RC1 โ Port C bit 1 |
| Pin 13 | RC2 โ Port C bit 2 |
| Pin 14 | RC3 โ Port C bit 3 |
| Pin 15 | RC4 โ Port C bit 4 |
| Pin 16 | RC5 โ Port C bit 5 |
| Pin 17 | RC6 โ Port C bit 6 |
| Pin 18 | RC7 โ Port C bit 7 |
| Pin 19 | VSS โ Ground reference |
| Pin 20 | VDD โ Positive supply 2.3V to 5.5V |
Typical Applications
PIC16F1458-E/SO is suitable for 6 applications: USB HID Peripheral (Keyboard, Mouse, Gamepad), USB CDC Virtual COM Port Bridge, Capacitive Touch Button Panel (mTouch), Low-Cost Sensor Hub / Data Logger, USB Software License Dongle, Educational / Maker USB Development Board.
USB HID Peripheral (Keyboard, Mouse, Gamepad)
The PIC16F1458-E/SO is a natural fit for USB Human Interface Device peripherals because it integrates a USB 2.0 full-speed transceiver and SIE without any external PHY, plus a 48 MHz clock generated by the on-chip 3x PLL from the internal 16 MHz HFINTOSC. Designers need only a 90-ohm differential pair on D+/D- and a VBUS sense resistor to ship a USB HID keyboard, mouse or gamepad. The 7 KB Flash holds the Microchip USB stack plus a custom HID report descriptor, and 18 GPIO pins drive the matrix scan or button read. Compared with software-USB bit-banging on smaller PICs, this part removes timing jitter and frees the CPU for debounce and LED PWM. Industrial-grade -40C to +125C operation also suits ruggedized input devices.
Recommended
USB CDC Virtual COM Port Bridge
For bridging legacy UART peripherals to USB, the PIC16F1458-E/SO runs Microchip's CDC class driver and presents a virtual COM port on the host with no host-side driver installation. The integrated 48 MHz PLL and USB SIE handle full-speed 12 Mbps signalling while the enhanced UART runs up to 1.5 Mbps. The 512-byte SRAM is sufficient for ring buffers of typical 115200 baud traffic, while the 7 KB Flash stores both bootloader and application images for in-field firmware updates via the same USB port. At 2.3V to 5.5V supply the part accepts power from VBUS or external rails, simplifying designs for industrial instrumentation and programmer dongles.
Recommended
Capacitive Touch Button Panel (mTouch)
The PIC16F1458-E/SO supports Microchip's mTouch capacitive touch sensing through its built-in charge-time measurement hardware, requiring only PCB pads and series resistors for up to 18 touch buttons across the 18 GPIO pins. The internal 16 MHz HFINTOSC and 14-bit ADC are fast enough to scan a full button matrix every few milliseconds while keeping firmware footprint below 4 KB. Touch sensing with on-chip hardware eliminates the analog front-end op-amps used by older designs, shrinking BOM and improving ESD robustness in appliance and consumer products. Extended -40C to +125C temperature grade allows the part to operate behind glass or in outdoor control panels.
Recommended
Low-Cost Sensor Hub / Data Logger
With 7 KB Flash, 256-byte EEPROM and a 10-bit ADC with up to 9 channels, the PIC16F1458-E/SO is well suited to small sensor hubs that read analog sensors, format measurements into USB HID or CDC frames, and stream them to a host. The 2.3V to 5.5V supply range accepts sensor voltages from 3.3V coin-cell or 5V regulated rails. XLP sleep currents under 1 uA let the part sleep between samples, making it a competitive choice for battery-powered environmental loggers that wake periodically and dump data via USB. Industrial temperature grade also supports unattended industrial monitoring.
Recommended
USB Software License Dongle
Software-protection dongles use the PIC16F1458-E/SO's integrated USB and self-programmable Flash to store license keys and respond to encrypted host challenges. The 7 KB Flash holds both USB HID stack and authentication firmware, while the EEPROM retains license data through power cycles. The internal 48 MHz PLL removes precision-clock crystals, and the SOIC-20 package simplifies SMT assembly. The extended -40C to +125C range means the dongle operates in harsh industrial environments without special cooling.
Recommended
Educational / Maker USB Development Board
The PIC16F1458-E/SO powers low-cost USB learning kits because it requires only a USB cable and 100 nF decoupling to boot and enumerate as a HID device. The ICSP pins allow students to program the chip directly from a PICkit 3 or PICkit 4 without removing it from the board, and the 7 KB Flash supports MPLAB X IDE examples for USB HID, CDC and bootloader projects. With 18 GPIO available, hobbyists can add buttons, RGB LEDs and UART headers to demonstrate core peripheral concepts. The PIC16F1455-I/SL drop-in alternative lets the same board scale code space up or down depending on student needs.
Recommended
Recommended Products Summary
Engineering reference data for PIC16F1458-E/SO โ comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16F1455-I/SL | PIC16F1458-I/SO | PIC16F1454-E/P | PIC16F1455-E/ST | PIC16F1454-I/JQ |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 20-SOIC (SO, 0.295 in / 7.50 mm) | 20-SOIC (SL, 0.295 in) | 20-SOIC (SO, 0.295 in) - same | 20-PDIP (P) - thru-hole | 20-TSSOP (ST) | 20-UQFN (JQ) |
| Flash Program Memory | 7 KB | 3.5 KB | 7 KB | 3.5 KB | 3.5 KB | 3.5 KB |
| SRAM | 512 bytes | 256 bytes | 512 bytes | 256 bytes | 256 bytes | 256 bytes |
| EEPROM | 256 bytes | 256 bytes | 256 bytes | 256 bytes | 256 bytes | 256 bytes |
| Max Operating Frequency | 48 MHz (12 MIPS) | 48 MHz (12 MIPS) | 48 MHz (12 MIPS) | 48 MHz (12 MIPS) | 48 MHz (12 MIPS) | 48 MHz (12 MIPS) |
| Operating Temperature | -40 C to +125 C (Extended) | -40 C to +85 C (Industrial) | -40 C to +85 C (Industrial) | -40 C to +125 C (Extended) | -40 C to +125 C (Extended) | -40 C to +85 C (Industrial) |
| Integrated USB Transceiver | Yes (USB 2.0 Full-Speed) | Yes (USB 2.0 Full-Speed) | Yes (USB 2.0 Full-Speed) | Yes (USB 2.0 Full-Speed) | Yes (USB 2.0 Full-Speed) | Yes (USB 2.0 Full-Speed) |
| GPIO Count | 18 | 18 | 18 | 18 | 18 | 18 |
| ADC | 10-bit, 9 channels | 10-bit, 9 channels | 10-bit, 9 channels | 10-bit, 9 channels | 10-bit, 9 channels | 10-bit, 9 channels |
Key Differentiators
- Doubled Flash over PIC16F1455 (vs PIC16F1455-I/SL)
- Extended -40C to +125C temperature range (vs PIC16F1458-I/SO)
- SOIC-20 SMD vs PDIP thru-hole (vs PIC16F1454-E/P)
Design Notes
Estimated: route the USB D+ (RC4) and D- (RC5) pair as a 90-ohm differential trace with 0.8 mm to 1.0 mm width on a 0.2 mm-space stack-up, matching lengths within 0.5 mm. Place the VBUS 27 Ohm/100 nF RC network within 5 mm of pin 17 (RC6) and tie VBUS to a 5 V-tolerant pin through a 10 kOhm/1 kOhm divider; this keeps VBUS sensing inside the absolute maximum ratings of the PIC16F1458-E/SO during hot-plug events.
Place a 100 nF ceramic decoupling capacitor within 3 mm of pin 20 (VDD) and a 4.7 uF bulk capacitor on the same net to stabilize the on-chip 3.3V regulator during USB suspend/resume. Add a 100 nF cap on the VCORE pin if exposed, and tie unused pins (RA6/OSC2 if running from internal HFINTOSC) to defined logic levels to avoid phantom current draws. XLP sleep currents drop below 1 uA only when all peripherals are disabled in firmware.
Do not enable both the USB module and an external 48 MHz crystal at the same time - the 3x PLL already synthesizes 48 MHz from HFINTOSC and a second clock source will cause PLL instability. Always set the active clock source bit in OSCCON BEFORE configuring the USB peripheral, and clear the USBPUE bit when not attached to a host. When using ICSP, ensure the PGM/DATA pins are not loaded by external pull-ups stronger than 10 kOhm, or programming will fail intermittently.
Estimated: for a 20-pin SOIC layout, reserve 0.5 mm pitch pads with 8.4 mm body length and 7.5 mm width per JEDEC MS-013. Keep the exposed pad (if any) solder-mask-defined to avoid tombstoning during reflow. The SOIC's 0.295 in (7.50 mm) width differs from the TSSOP-20's 4.40 mm body and the UQFN-20's 4 mm pad array, so verifying the PCB land pattern matches the chosen package variant is critical for second-source compatibility.
Compliance Information
RoHS compliant per Microchip material declaration. -E suffix denotes extended -40C to +125C industrial temperature grade. Not AEC-Q100 qualified; for AEC-Q100 automotive applications use PIC16F1458T-E/SO or contact Microchip for Q-grade variants.
