PIC16F1459T-I/GZ - 14KB Flash USB MCU 48MHz | Microchip
MPN: PIC16F1459T-I/GZ ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $2.4 | $2.40 |
| 10 | $2.18 | $21.80 |
| 100 | $1.85 | $185.00 |
| 500 | $1.62 | $810.00 |
| 1,000 | $1.52 | $1,520.00 |
PIC16F1459T-I/GZ Overview
A microcontroller (MCU) is a single-chip computer that integrates a CPU, non-volatile program memory, volatile data memory, and programmable peripherals. 8-bit MCUs like the PIC16F1459 trade raw computational throughput for low cost, deterministic instruction timing, and ultra-low power consumption. Within the broader taxonomy, the PIC16F1459 belongs to: microcontroller -> embedded controller -> digital IC -> semiconductor. Its eXtreme Low Power (XLP) technology and integrated USB make it a popular bridge between legacy 8-bit designs and modern USB-connected peripherals.
Key features include 14KB self-read/write Flash with high-endurance HEFC cells, 128 bytes of non-volatile data EEPROM, a 10-bit ADC with up to 17 channels, multiple communication peripherals (USB, SPI, I2C, UART), and ultra-low-power Sleep mode drawing as little as . The 20-pin UQFN (GZ) form factor offers a compact 4mm x 4mm footprint with an exposed thermal pad for improved thermal performance and PCB grounding. The internal 16 MHz oscillator with 4x PLL eliminates the need for an external crystal in most designs, reducing BOM cost and PCB area.
Architecturally, the PIC16F1459 uses Microchip's enhanced mid-range core with 49 instructions and 16-level hardware stack, providing a balance of code density and execution speed. The integrated USB 2.0 transceiver with on-chip clock recovery eliminates external USB components, while the Charge Time Measurement Unit (CTMU) enables touch sensing, capacitive measurement, and simple time-of-flight applications. The ICSP (In-Circuit Serial Programming) interface allows firmware updates after PCB assembly.
Typical applications include USB HID peripherals such as keyboards, mice, and custom input devices, USB-to-UART bridges, low-cost data loggers, sensor interfaces, and consumer electronics requiring USB connectivity. The XLP feature also suits battery-powered devices like remote controls, toys, and portable instruments where Sleep-mode current is critical.
When designing with this device, ensure the USB D+/D- traces are routed as a 90-ohm differential pair with controlled impedance, and that the exposed pad on the UQFN is soldered to a sufficiently large ground plane for thermal and electrical performance. The internal PLL requires proper decoupling (typically 100 nF + 1 uF) within 3 mm of the VDD pins.
This page synthesizes distributor pricing, drop-in alternative MPNs, and practical design notes that complement the manufacturer datasheet to accelerate your USB-enabled 8-bit design.
Drop-in alternatives for PIC16F1459T-I/GZ — 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 PIC16F1459T-I/GZ (same form factor and footprint) — differing in ADC, Data EEPROM, Internal Oscillator, Package, I/O Pins.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16F1459-I/SS
✅ Drop-In✓ In Stock
$1.55 / Unit
View Datasheet →PIC16F1459-E/SS
✅ Drop-In✓ In Stock
$1.78 / Unit
View Datasheet →PIC16F1455T-I/ST
✅ Drop-In ⚠️ 参数待验证✓ In Stock
$1.92 / Unit
View Datasheet →PIC16F1459T-I/GZ Maximum Ratings & Electrical Characteristics
| Core Architecture | PIC enhanced mid-range 8-bit |
| Program Memory | 14 KB Flash (8K x 14 words) |
| Data SRAM | 1024 bytes |
| Data EEPROM | 128 bytes |
| Maximum CPU Frequency | 48 MHz |
| Operating Voltage Range | 2.3 V to 5.5 V |
| USB Module | USB 2.0 Full-Speed with on-chip clock recovery |
| ADC | 10-bit, up to 17 channels |
| Timers | 3 (Timer0, Timer1, Timer2) |
| Package | 20-pin UQFN (GZ) with exposed pad |
| Operating Temperature | -40 C to +85 C (Industrial) |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
| Internal Oscillator | 16 MHz with 4x PLL (48 MHz) |
| Programming Interface | ICSP (In-Circuit Serial Programming) |
| Low-Power Technology | XLP (eXtreme Low Power) |
PIC16F1459T-I/GZ Pin Configuration
| Pin 1 | RA5 — Digital I/O / analog input |
| Pin 2 | RA4 — Digital I/O / analog input |
| Pin 3 | RA3 — Digital I/O / analog input / MCLR |
| Pin 4 | RC5 — Digital I/O / analog input |
| Pin 5 | RC4 — Digital I/O / analog input |
| Pin 6 | RC3 — Digital I/O / analog input |
| Pin 7 | RC2 — Digital I/O / analog input |
| Pin 8 | RC1 — Digital I/O / analog input / ICSPCLK |
| Pin 9 | RC0 — Digital I/O / analog input / ICSPDAT |
| Pin 10 | VSS — Ground |
| Pin 11 | VDD — Positive supply voltage |
| Pin 12 | RA2 — Digital I/O / analog input |
| Pin 13 | RA1 — Digital I/O / analog input / ICSPCLK alt |
| Pin 14 | RA0 — Digital I/O / analog input / ICSPDAT alt |
| Pin 15 | RB7 — Digital I/O |
| Pin 16 | RB6 — Digital I/O |
| Pin 17 | RB5 — Digital I/O / USB D- |
| Pin 18 | RB4 — Digital I/O / USB D+ |
| Pin 19 | RB3 — Digital I/O |
| Pin 20 | RB2 — Digital I/O |
Typical Applications
PIC16F1459T-I/GZ is suitable for 7 applications: USB HID Keyboard / Mouse, USB-to-UART Bridge, Battery-Powered Sensor Node, USB Charging Monitor / Tester, Industrial USB Data Logger, Consumer USB Audio / MIDI Device, Capacitive Touch Interface with USB.
USB HID Keyboard / Mouse
The PIC16F1459T-I/GZ is ideal for USB HID keyboard and mouse designs thanks to its integrated USB 2.0 full-speed transceiver with on-chip clock recovery, eliminating the external crystal and reducing BOM cost. With 14KB Flash, the device comfortably fits HID report descriptors, matrix-scanning logic, and N-key rollover routines without external memory expansion. Microchip's free USB stack in MPLAB X further accelerates firmware bring-up. The 20-pin UQFN (GZ) footprint fits inside a compact mouse PCB and the 2.3V-5.5V supply range supports both 3.3V and 5V USB rails directly.
Recommended
USB-to-UART Bridge
The PIC16F1459T-I/GZ serves as a low-cost USB-to-UART bridge for legacy serial devices, replacing dedicated bridge ICs. Its integrated USB peripheral and on-chip clock recovery allow direct USB-to-ASCII conversion without external crystals, while the 14KB Flash accommodates Microchip's CDC class firmware plus user-defined protocol handling. Operating from 2.3V to 5.5V, it interfaces with both 3.3V and 5V UART rails. The 20-pin UQFN package keeps the bridge dongle footprint under 4mm x 4mm, ideal for compact debug tools and industrial adapters.
Recommended
Battery-Powered Sensor Node
The PIC16F1459T-I/GZ is well suited for battery-powered sensor nodes thanks to its XLP (eXtreme Low Power) technology, which drops Sleep-mode current into the nanoampere range to extend coin-cell life. The integrated 10-bit ADC with up to 17 channels digitizes analog sensors without external signal conditioning, while the 48 MHz internal oscillator supports on-demand high-speed acquisition bursts. The 14KB Flash is sufficient for sensor-fusion code and USB-based configuration, and the 2.3V-5.5V range covers lithium and alkaline chemistries directly.
Recommended
USB Charging Monitor / Tester
The PIC16F1459T-I/GZ provides a low-cost USB charging monitor and protocol-tester platform, leveraging its USB 2.0 full-speed peripheral to enumerate on the host bus while its 10-bit ADC measures VBUS voltage and current sense amplifier output. The 1024-byte SRAM is enough to buffer USB descriptor exchanges during enumeration, and 14KB Flash accommodates protocol-decoding logic for BC1.2, USB-PD advertisements, or vendor-specific handshakes. The compact UQFN-20 package fits inline between a USB cable and a device under test.
Recommended
Industrial USB Data Logger
The PIC16F1459T-I/GZ is a strong fit for industrial USB data loggers thanks to its 128-byte EEPROM for non-volatile configuration storage, 14KB Flash for time-stamping and event-handling code, and USB 2.0 interface for tethered data offload to a host PC. The 2.3V-5.5V operating range accepts 3.3V or 5V supply rails common in industrial cabinets, and the -40C to +85C industrial temperature range covers most factory-floor environments. The 20-pin UQFN (GZ) with exposed pad provides excellent thermal performance for continuous-logging deployments.
Recommended
Consumer USB Audio / MIDI Device
The PIC16F1459T-I/GZ supports low-cost consumer USB audio and MIDI peripherals such as headphone DACs, MIDI controllers, and USB microphones. Its USB 2.0 full-speed peripheral plus on-chip clock recovery handles audio-class enumeration, while the 48 MHz instruction rate sustains interrupt-driven USB isochronous transfers. The 14KB Flash is sufficient for USB-MIDI event parsing plus simple audio-mixing routines, and the UQFN-20 footprint keeps the BOM and PCB small. The 2.3V-5.5V supply range suits bus-powered designs drawing up to 100 mA from the USB rail.
Recommended
Capacitive Touch Interface with USB
The PIC16F1459T-I/GZ enables compact capacitive touch interfaces (keypads, sliders, proximity sensors) with USB output thanks to its integrated Charge Time Measurement Unit (CTMU), which provides hardware-based capacitance measurement without external timing components. Combined with the USB 2.0 peripheral, this creates a single-chip touch-to-USB bridge, reducing BOM cost and PCB area. The 14KB Flash accommodates touch decoding firmware plus USB HID reporting, and the 20-pin UQFN fits beneath a touch-pad overlay on a compact USB dongle.
Recommended
Recommended Products Summary
Engineering reference data for PIC16F1459T-I/GZ — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16F1459-I/SS | PIC16F1459-E/SS | PIC16F1455T-I/ST | PIC16F1455-I/SL | PIC16F1455T-I/ST (UQFN-20) |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 20-pin UQFN (GZ) | 20-pin SSOP - different footprint | 20-pin SSOP - different footprint | 28-pin TSSOP - different footprint | 28-pin SOIC - different footprint | 20-pin UQFN (GZ) - same |
| Core | PIC enhanced mid-range 8-bit | PIC enhanced mid-range 8-bit | PIC enhanced mid-range 8-bit | PIC enhanced mid-range 8-bit | PIC enhanced mid-range 8-bit | PIC enhanced mid-range 8-bit |
| Program Memory | 14 KB Flash | 14 KB Flash | 14 KB Flash | 14 KB Flash | 14 KB Flash | 14 KB Flash |
| RAM | 1024 bytes | 1024 bytes | 1024 bytes | 1024 bytes | 1024 bytes | 1024 bytes |
| USB Module | USB 2.0 FS with clock recovery | USB 2.0 FS with clock recovery | USB 2.0 FS with clock recovery | USB 2.0 FS with clock recovery | USB 2.0 FS with clock recovery | USB 2.0 FS with clock recovery |
| Operating Voltage | 2.3 V to 5.5 V | 2.3 V to 5.5 V | 2.3 V to 5.5 V | 2.3 V to 5.5 V | 2.3 V to 5.5 V | 2.3 V to 5.5 V |
| Temperature Range | -40 C to +85 C (Industrial) | -40 C to +85 C (Industrial) | -40 C to +125 C (Extended) | -40 C to +85 C (Industrial) | -40 C to +85 C (Industrial) | -40 C to +85 C (Industrial) |
| Max CPU Frequency | 48 MHz | 48 MHz | 48 MHz | 48 MHz | 48 MHz | 48 MHz |
Key Differentiators
- Compact UQFN-20 (GZ) footprint with exposed thermal pad (vs PIC16F1459-I/SS)
- Industrial -40 C to +85 C temperature range standard (vs PIC16F1459-E/SS)
- 14 KB Flash and 1024-byte RAM within 20 pins (vs PIC16F1455T-I/ST)
- On-chip USB clock recovery eliminates external crystal (vs PIC16F1454T-I/ST)
Design Notes
Route the USB D+ (RB4) and D- (RB5) signals as a 90-ohm differential pair with controlled impedance and length matching within 150 mil. Place the USB traces on the top layer and keep them clear of switching nodes. The UQFN-20 (GZ) exposed thermal pad must be soldered to a continuous ground plane with at least 8 thermal vias for proper grounding and thermal dissipation - this pad is not optional.
Place a 100 nF ceramic decoupling capacitor within 3 mm of each VDD pin (multiple VDD pins on this package). Add a bulk 1 uF to 10 uF tantalum or ceramic capacitor on the main 3.3 V or 5 V rail. For USB bus-powered designs, include a 10 uF bulk capacitor on VBUS to satisfy the USB inrush-current specification during hot-plug events.
Configuration word settings must match the application: enable the internal oscillator with PLL for 48 MHz operation, set the MCLR pin function appropriately (RA3/MCLR pin), and disable unused peripherals to minimize current draw. Do not omit the 100 nF decoupling on VDD - the internal PLL is sensitive to supply noise. Confirm that the USB module is enabled in firmware before attempting enumeration.
Keep the 48 MHz oscillator traces short and shielded by a ground ring. Avoid routing digital switching signals (PWM, SPI clock) across the analog AVSS/AVDD region if your design uses the ADC. For SSOP-20 prototypes used as substitutes, hand-soldering is straightforward, but for UQFN-20 (GZ) production designs, plan for reflow soldering with paste stencil apertures matched to the exposed-pad geometry.
Compliance Information
RoHS and REACH compliant per Microchip product page. Not AEC-Q100 qualified - this is an industrial-grade MCU. For automotive USB applications, contact Microchip for AEC-Q100 qualified part numbers.
