PIC16F1455-I/ST - 14KB Flash USB MCU 48MHz TSSOP-14 | Microchip
N.º da peça: PIC16F1455-I/ST ✓ Ativo| Qtd. | Preço unitário | Total |
|---|---|---|
| 1 | $2.2163 | $2,22 |
| 10 | $1.98 | $19,80 |
| 100 | $1.74 | $174,00 |
| 500 | $1.52 | $760,00 |
| 1.000 | $1.31 | $1.310,00 |
PIC16F1455-I/ST Visão geral
A PIC microcontroller (MCU) is a compact, programmable processor that combines a CPU, non-volatile Flash memory for code storage, SRAM for data, and configurable peripherals on a single silicon die. The PIC16F14xx family belongs to the Microchip 8-bit enhanced mid-range core category (PIC16F -> 8-bit MCU -> microcontroller -> embedded IC) and is widely used as a low-cost, deterministic controller for embedded designs that require USB connectivity without the overhead of a 32-bit core.
Key features of the PIC16F1455-I/ST include 14 KB self-read/write Flash with high-endurance HEF cells, 128 bytes of non-volatile data storage, a 16-level hardware stack, 49 base instructions, and a Universal Serial Bus 2.0 module that supports full-speed (12 Mbps) device mode with internal clock recovery - eliminating the need for an external crystal on USB applications. Additional peripherals include a 10-bit ADC with up to 9 channels, two 8-bit timers, one 16-bit timer, enhanced PWM, I2C/SPI/EUSART, and an on-chip 3.3V LDO that lets the MCU draw power directly from a 5V USB VBUS rail.
The architecture uses an 8-bit data path with a Harvard-style memory map, allowing simultaneous access to program Flash and data SRAM in a single clock cycle. The 48 MHz internal oscillator drives an instruction clock of 12 MIPS (4:1 divider), giving deterministic interrupt latency suited to real-time control loops. The on-chip 3.3V regulator supplies up to ~30 mA to external circuitry, simplifying USB bus-powered designs by powering both the MCU core and small analog loads from a single rail.
Typical applications include low-speed USB human-interface devices (HID), CDC virtual COM ports, USB-to-UART bridges, USB keyboard/mouse controllers, USB sensor nodes, USB LED controllers, and any embedded system that needs a 5V-tolerant USB device interface with low-power sleep modes. The 14-pin footprint keeps the design compact for dongles and cable-mounted electronics.
When designing with this part, ensure the D+ line pull-up resistor is connected to the internally regulated 3.3V rail (rather than VDD) so that the device correctly signals full-speed connection to the host. Place the VBUS decoupling capacitor within a few millimeters of the VBUS pin to meet USB inrush-current requirements.
This page synthesizes current distributor pricing, validated drop-in alternatives from the PIC16F145x family, and practical design notes for USB bring-up that go beyond the manufacturer datasheet summary.
Alternativas drop-in para PIC16F1455-I/ST — mesmo encapsulamento, compatível pino a pino. Peças de encapsulamento diferente que exigem retrabalho na PCB são excluídas.
Variantes desta série
Modelos da mesma série compatíveis como drop-in com PIC16F1455-I/ST (mesmo formato e footprint) — diferindo em Package, Operating Temperature, ADC, I/O Pins, MSL Level.
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
PIC16F1455-E/ST
✅ Drop-In✓ Em estoque
$0.95 / unidade
Ver ficha técnica →PIC16F1454-I/ST
✅ Drop-In✓ Em estoque
$1.02 / unidade
Ver ficha técnica →PIC16F1455-I/ST Classificações máximas e características elétricas
| Core Architecture | PIC16 Enhanced Mid-Range 8-bit |
| Instruction Set | 49 base instructions |
| Program Memory (Flash) | 14 KB (8K x 14 words) |
| Data SRAM | 1024 bytes |
| Non-Volatile Data Storage (HEF) | 128 bytes |
| Hardware Stack Levels | 16 |
| Maximum CPU Frequency | 48 MHz |
| Instruction Throughput | 12 MIPS |
| Operating Voltage (VDD) | 2.5 V to 5.5 V |
| USB Module | USB 2.0 Full-Speed Device (12 Mbps) with internal clock recovery |
| On-Chip LDO Regulator | 3.3 V output for USB transceiver supply |
| ADC | 10-bit, up to 9 channels |
| Timers | 2 x 8-bit, 1 x 16-bit |
| PWM Modules | Enhanced PWM, 3 channels |
| Communication Peripherals | I2C, SPI, EUSART (UART) |
| I/O Pins | 12 (14-pin package) |
| Temperatura de operação | -40 C to +85 C (industrial, -I) |
| Encapsulamento | TSSOP-14 (ST) |
| Tipo de montagem | Surface Mount |
| Nível MSL | MSL1 |
| Status RoHS | Compliant |
Configuração de pinos do PIC16F1455-I/ST
| Pino 1 | VBUS — USB VBUS sense input (5V) |
| Pino 2 | D- — USB D- line |
| Pino 3 | D+ — USB D+ line; pull-up to internal 3V3 for full-speed enumeration |
| Pino 4 | RA0 — Bidirectional I/O / ICSPDAT |
| Pino 5 | RA1 — Bidirectional I/O / ICSPCLK |
| Pino 6 | RA3 — Bidirectional I/O / MCLR (reset) |
| Pino 7 | RA4 — Bidirectional I/O / SOSC |
| Pino 8 | VSS — Ground reference |
| Pino 9 | RC0 — Bidirectional I/O / SOSCO |
| Pino 10 | RC1 — Bidirectional I/O / SOSCI |
| Pino 11 | RC2 — Bidirectional I/O |
| Pino 12 | RC3 — Bidirectional I/O |
| Pino 13 | VDD — Positive supply (2.5 V to 5.5 V) |
| Pino 14 | RA5 — Bidirectional I/O |
Aplicações típicas
PIC16F1455-I/ST é adequado para 7 aplicaçãos: USB HID Keyboard / Mouse Controller, USB CDC Virtual COM Port Bridge, USB LED Lighting Controller, USB Sensor Dongle (Temperature / Humidity), USB Bootloader Host for 8-bit PIC Products, USB Security Token / Authenticator, Industrial USB Data Acquisition Module.
USB HID Keyboard / Mouse Controller
The PIC16F1455-I/ST is an ideal USB HID device controller because it integrates a USB 2.0 full-speed transceiver, internal 48 MHz oscillator with clock recovery, and the XLP low-power core in a 14-pin TSSOP. No external crystal or precision resistor network is required for USB enumeration, which keeps the BOM cost near $1 for the MCU plus passives. With 14 KB Flash, designers can comfortably fit a USB HID bootloader plus a small HID descriptor and key matrix scanner. Place a 1uF ceramic on VBUS, attach D+ to pin 3 with the internal 3.3V pull-up, and route D- to pin 2. The 12 MIPS throughput guarantees sub-millisecond HID report latency, and the XLP sleep current below 1 uA makes it suitable for battery-powered wireless dongles.
Recomendado
USB CDC Virtual COM Port Bridge
Use the PIC16F1455-I/ST as a bus-powered USB-to-UART bridge (CDC class) to add a virtual COM port to any embedded design. The 14 KB Flash fits the Microchip USB CDC stack with a small command interpreter, and 1024 B RAM provides ample buffer space for high-speed serial traffic. The integrated 3.3V LDO and full-speed USB module let you enumerate directly from a 5V VBUS rail with no external regulator or crystal. Tie D+ to the internal 3.3V rail via 1.5k pull-up, and the firmware enumerates as a CDC ACM device without any host driver on modern operating systems.
Recomendado
USB LED Lighting Controller
Drive addressable LED strips or matrix panels from a USB host using the PIC16F1455-I/ST. The 14 KB Flash holds an WS2812B/APA102 timing library plus a USB command parser, and the 48 MHz instruction clock provides deterministic bit-banged timing at 800 kbps or 1 MHz. The enhanced PWM outputs (3 channels) can additionally drive high-current MOSFETs for analog dimming or fan control. The 14-pin TSSOP footprint fits easily into a small dongle housing, and the XLP sleep current below 1 uA is sufficient for a USB-suspended lighting controller that draws less than the USB suspend budget.
Recomendado
USB Sensor Dongle (Temperature / Humidity)
Implement a low-cost USB sensor dongle (HID or CDC) using the PIC16F1455-I/ST plus an external I2C sensor such as an SHT30 or TMP117. The 10-bit ADC and I2C peripheral let the MCU poll sensors every few hundred milliseconds and emit HID input reports, while the 14 KB Flash supports a USB stack plus a sensor calibration table. Bus-powered operation means no batteries or external regulators; the on-chip 3.3V LDO also supplies the sensor. Low XLP sleep current allows the dongle to enter USB suspend cleanly between host polls.
Recomendado
USB Bootloader Host for 8-bit PIC Products
Use the PIC16F1455-I/ST as a USB bootloader programmer for factory or field firmware updates on a downstream PIC16F1xxx target. The host MCU runs a custom HID bootloader tool with a 14 KB Flash image, while the target MCU exposes its ICSPCLK/ICSPDAT pins. This eliminates the need for an external programmer in field-replaceable modules and reduces total BOM cost. The PIC16F1455's USB stack and 48 MHz throughput let a 14 KB image flash in under two seconds.
Recomendado
USB Security Token / Authenticator
Build a compact USB security token (FIDO2-style authenticator or simple challenge-response fob) using the PIC16F1455-I/ST. The 14 KB Flash accommodates a small crypto library and HID FIDO descriptor, while 1024 B RAM is sufficient for challenge buffers. The 14-pin TSSOP footprint fits inside a low-profile USB Type-A plug. The on-chip 3.3V LDO lets the token be bus-powered without any external regulator, and the XLP sleep current supports USB suspend for extended idle periods without draining the host.
Recomendado
Industrial USB Data Acquisition Module
Deploy a 14-pin TSSOP USB data acquisition front-end using the PIC16F1455-I/ST. The 10-bit ADC (up to 9 channels) reads analog sensors, while the USB module streams samples to a host application at up to 1 kSps. With industrial-grade -I temperature rating (-40C to +85C), the part suits factory-floor deployments. For harsher environments the extended -E variant (PIC16F1455-E/ST) is a drop-in replacement. No external crystal or LDO is required, so a 4-layer PCB with two analog input connectors, an ADC front-end, and the MCU fits in a 25 mm x 25 mm module.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para PIC16F1455-I/ST — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | PIC16F1455-E/ST | PIC16F1454-I/ST |
|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | TSSOP-14 | TSSOP-14 - same | TSSOP-14 - same |
| Program Flash | 14 KB | 14 KB | 7 KB |
| Data SRAM | 1024 B | 1024 B | 512 B |
| USB Module | USB 2.0 Full-Speed with internal clock recovery | USB 2.0 Full-Speed with internal clock recovery | USB 2.0 Full-Speed with internal clock recovery |
| Maximum CPU Frequency | 48 MHz | 48 MHz | 48 MHz |
| Operating Temperature | -40C to +85C (industrial) | -40C to +125C (extended) | -40C to +85C (industrial) |
Principais diferenciais
- Lowest-cost 14-pin TSSOP USB MCU from Microchip with internal 48 MHz oscillator and clock recovery (vs PIC18F14K50-I/ST)
- Doubled Flash and RAM versus the lower-cost sibling (vs PIC16F1454-I/ST)
- Industrial temperature grade at the same price as the extended part on lower volumes (vs PIC16F1455-E/ST)
Notas de projeto
Place a 1 uF X7R ceramic capacitor within 3 mm of the VBUS pin (pin 1) and a 100 nF X7R within 3 mm of the VDD pin (pin 13). The VBUS pin is also a sense input, so keep its trace short and isolated from switching nodes. A 4-layer PCB with a solid ground plane under the MCU is recommended to meet USB-IF full-speed signal-integrity requirements; the D+/D- traces should be 45-ohm impedance-matched and kept under 50 mm in length to stay below the 4 ns rise-time budget.
The D+ pull-up resistor (typically 1.5 kOhm to 3.3V) MUST connect to the on-chip regulated 3V3 rail (not VDD). Pulling D+ to VDD will not produce a valid full-speed chirp at enumeration on hosts that probe 3.3V logic levels. Also avoid enabling the on-chip 3.3V regulator as a general-purpose supply for high-current loads - it is sized for the USB transceiver plus a small analog front-end, not for downstream 3.3V rails drawing > 30 mA.
Enable the internal 3.3V LDO via CONFIG settings in MPLAB X (CONFIG3L.VREGPM = 1 for active-on, 0 for always-on). When bus-powered, the MCU draws approximately 8 mA in active mode and below 1 uA in XLP sleep mode, which is well below the USB 2.0 suspend budget of 2.5 mA. For battery-backed designs, switch to the HFINTOSC source before entering sleep and disable the USB module to minimize idle current.
TSSOP-14 thermal pad is not present on this package, so no central exposed pad needs to be soldered. However, do not route noisy digital traces (PWM, SPI clock) directly under the MCU body to avoid coupling into the analog ADC inputs. Keep the analog AVSS / VDD pair bypassed with a 10 uF + 100 nF pair if your design routes any analog channels to RA0-RA5.
Informações de conformidade
RoHS and REACH compliant per Microchip product page; lead-free reflow-compatible TSSOP-14 package. Not AEC-Q100 qualified - for automotive designs evaluate the PIC16F1459 with the Q-prefix ordering code.
