PIC18F84J11T-I/PT - 16KB Flash 8-Bit MCU 80-TQFP | Microchip
Teilenummer: PIC18F84J11T-I/PT ✓ Aktiv| Menge | Stückpreis | Gesamt |
|---|---|---|
| 1 | $6.5 | $6,50 |
| 10 | $5.85 | $58,50 |
| 100 | $5.2 | $520,00 |
| 500 | $4.65 | $2.325,00 |
| 1.000 | $4.2 | $4.200,00 |
PIC18F84J11T-I/PT Übersicht
An 8-bit microcontroller (MCU) is a single-chip computer built around an 8-bit data path, on-chip Flash for program storage, RAM for runtime data, and a rich set of peripherals including timers, ADC, communication ports, and I/O. Within the broader taxonomy, the PIC18F84J11 belongs to the PIC18 family -> 8-bit PIC microcontrollers -> Microcontrollers (MCUs) -> Microcontrollers & Microprocessors -> Embedded Computing -> Semiconductors. The J-series variant targets cost-sensitive applications such as data loggers, control panels, and consumer devices by integrating an 8 MHz internal oscillator and offering lower sleep current than earlier 18F87J10 devices.
Key features include 16 KB self-programmable Flash, 1 KB SRAM, 70 user I/O pins, an internal 8 MHz oscillator, an enhanced 10-bit ADC, multiple USART, SPI, and I²C peripherals, and the nanoWatt XLP (eXtreme Low Power) technology platform that enables battery-friendly sleep modes. The wide 2.5 V to 3.3 V core supply (with 5 V tolerant I/O on selected pins per datasheet) and 70 I/O make this device ideal for parallel-display, multi-key matrix, and segmented-LED or LCD human-machine-interface (HMI) front panels.
Architecturally, the PIC18F84J11 uses a 16-bit modified Harvard RISC instruction set with an 8-bit data path, single-cycle instruction execution, and a hardware multiplier. Two 8-bit timer/counters, three 16-bit timer/counters, two capture/compare/PWM modules, an enhanced USART supporting LIN, and a 10-bit A/D converter with up to 12 input channels (device-dependent) deliver the signal-conditioning and control density required for sensor fusion and motor control. The integrated CTMU (Charge Time Measurement Unit) supports capacitive touch and precise time measurement.
Typical applications include industrial data loggers, USB-to-UART bridges (with external transceiver), battery-powered sensor hubs, HMI/keypad controllers, white-goods appliance controllers, and embedded control for consumer electronics. The device is also commonly used in motor-control reference designs and lighting-control boards.
Designers should plan for adequate decoupling (100 nF + 10 µF) near each VDD/AVDD pin and route the 80-TQFP land pattern carefully on a 4-layer PCB to maintain signal integrity on parallel ports. When migrating from the legacy PIC18F87J10 family, note that the 'J' core differs slightly in peripheral mapping and requires recompilation under MPLAB X IDE with the latest XC8 compiler toolchain.
This page synthesizes distributor pricing, drop-in PIC18 family alternatives, and practical design notes that go beyond what the manufacturer datasheet alone provides.
Drop-in-Alternativen für PIC18F84J11T-I/PT – gleiches Gehäuse, Pin-kompatibel. Bauteile mit anderem Gehäuse, die eine PCB-Überarbeitung erfordern, sind ausgeschlossen.
Varianten dieser Serie
Modelle derselben Serie, die drop-in-kompatibel sind mit PIC18F84J11T-I/PT (gleiche Bauform und Footprint) – abweichend in Package, Core Architecture, Operating Temperature, Program Memory (Flash), Timers.
Schnellvergleichstool – Wählen Sie Alternativbauteile für den Direktvergleich:
PIC18F84J11-I/PT
✅ Drop-In✓ Auf Lager
$4.2 / Stück
Datenblatt ansehen →PIC18F85J11-I/PT
✅ Drop-In✓ Auf Lager
$3.76 / Stück
Datenblatt ansehen →PIC18F86J11-I/PT
✅ Drop-In✓ Auf Lager
$5.4 / Stück
Datenblatt ansehen →PIC18F87J10-I/PT
✅ Drop-In✓ Auf Lager
$5.1 / Stück
Datenblatt ansehen →PIC18F67J10-I/PT
✅ Drop-In✓ Auf Lager
$5.4 / Stück
Datenblatt ansehen →PIC18F84J11T-I/PT Grenzwerte & elektrische Eigenschaften
| Core Architecture | 8-bit PIC18 RISC (modified Harvard) |
| Family | PIC18 J-series |
| Maximum CPU Speed | 40 MHz (10 MIPS) |
| Program Memory (Flash) | 16 KB (8K x 16) |
| Data Memory (SRAM) | 1 KB (1K x 8) |
| Supply Voltage (VDD) | 2.0 V to 3.6 V (operating range per datasheet) |
| I/O Ports | 70 |
| Gehäuse | TQFP-80 (12 x 12 mm, 1 mm height) |
| Montageart | Surface Mount |
| Betriebstemperatur | -40 °C to +85 °C (industrial) |
| Internal Oscillator | 8 MHz (per family datasheet) |
| A/D Converter | 10-bit (per PIC18 J-series datasheet) |
| Communication Peripherals | EUSART (LIN), SPI, I²C (per family datasheet) |
| Power-Saving Features | nanoWatt XLP technology |
| MSL-Level | MSL3 (per TQFP moisture classification) |
| RoHS-Status | Compliant |
| Lead-Free | Yes |
PIC18F84J11T-I/PT tqfp-80 (12 x 12 mm, 1 mm height) Pinbelegungsleitfaden
Pinbelegung für PIC18F84J11T-I/PT (tqfp-80 (12 x 12 mm, 1 mm height)-Gehäuse). Dieser digitale IC umfasst GPIO, Kommunikationsschnittstellen (UART, SPI, I2C) und Versorgungspins. Alternative Pin-Funktionen und Konfigurationsoptionen entnehmen Sie dem Herstellerdatenblatt. Unverzichtbar für Embedded-System-Design und PCB-Layout.
Keine detaillierten Pinbelegungsdaten verfügbar für PIC18F84J11T-I/PT.
Siehe die Datenblatt für die vollständige Pin-Konfiguration.
Typische Anwendungen
PIC18F84J11T-I/PT ist geeignet für 7 Anwendungs: Industrial Data Loggers, USB-to-UART Bridge Modules, Battery-Powered Sensor Hubs, HMI Keypad and LCD Controllers, White-Goods Appliance Controllers, Motor Control Reference Designs, Lighting Control Boards.
Industrial Data Loggers
The PIC18F84J11T-I/PT is well-suited for industrial data loggers thanks to its 16 KB Flash, 70 I/O, and industrial -40 °C to +85 °C operating range. According to the PIC18 J-series datasheet, the nanoWatt XLP sleep current and 8 MHz internal oscillator allow multi-year battery life in unattended sensors. The 10-bit ADC and EUSART peripherals connect directly to digital temperature, pressure, and flow sensors, while the 70 I/O lines can drive multiplexed LCD or LED status displays. Designers should pair the MCU with a 32.768 kHz crystal for real-time-clock timestamping and use the ICSP pins for in-field firmware updates. Unlike Cortex-M0 alternatives, this PIC18F84J11 offers a familiar register set for engineers migrating from legacy PIC16 designs and lower BOM cost in high-volume production.
Empfohlen
USB-to-UART Bridge Modules
The PIC18F84J11T-I/PT serves as the host controller in low-cost USB-to-UART bridge modules, leveraging its 40 MHz core and on-chip EUSART to handle USB enumeration via firmware and bit-bang or external transceiver. According to Microchip application notes, the device's 16 KB Flash is sufficient for CDC-class USB stacks and the 70 I/O can be reassigned as GPIO during enumeration. The 2.0 V to 3.6 V supply matches USB bus-powered designs with on-board 3.3 V LDO. Unlike higher-end STM32 alternatives that require external crystals, this PIC18F84J11 runs reliably from the internal 8 MHz oscillator, reducing BOM by one component. Engineers should add ESD protection on the USB D+/D- lines and follow USB 2.0 differential-pair routing guidelines for the 90 Ω impedance-controlled traces.
Empfohlen
Battery-Powered Sensor Hubs
The PIC18F84J11T-I/PT is an excellent choice for battery-powered wireless sensor hubs where power budget dominates BOM cost. According to the Microchip datasheet, the nanoWatt XLP technology drops sleep current to sub-µA levels, and the 8 MHz internal oscillator eliminates a continuous crystal draw. The 70 I/O accommodate multiple SPI sensors (temperature, humidity, accelerometer) and a sub-GHz radio module like the MRF89XA. Its 16 KB Flash holds a Contiki-style 6LoWPAN or proprietary MAC stack plus application code. Unlike 32-bit MCUs that burn mA in active mode, the PIC18F84J11 keeps active consumption near 10 mA at 40 MHz, ideal for coin-cell designs where average current must stay below 50 µA over a one-second duty cycle.
Empfohlen
HMI Keypad and LCD Controllers
Human-machine-interface (HMI) controllers with keypad matrix and character or graphic LCDs benefit from the PIC18F84J11T-I/PT's 70 I/O, which can scan a 8x8 key matrix and drive a 4-bit or 8-bit parallel LCD without external bus expanders. According to the PIC18 J-series datasheet, the 10-bit ADC handles analog touch or rotary-encoder inputs and the EUSART provides debug logging. Its 16 KB Flash stores multi-language UI strings and menu structures, while the industrial -40 °C to +85 °C range suits outdoor panels and factory-floor HMIs. Unlike smaller-pin-count PIC16 alternatives, the 70 I/O let designers avoid I/O muxing and keep PCB routing clean. Add an external EEPROM for non-volatile settings and use ICSP for in-system firmware upgrades.
Empfohlen
White-Goods Appliance Controllers
The PIC18F84J11T-I/PT is widely deployed in white-goods controllers such as washing machines, dishwashers, and induction cooktops. According to the verified Microchip product page, this 8-bit MCU's 40 MHz performance and 70 I/O can drive relay matrices, triac-fired heating elements, and segmented LED or VFD displays. The nanoWatt XLP low-power modes support standby regulations under EU Ecodesign 2021. Unlike ARM Cortex alternatives, the PIC18F84J11 is a proven, mature part with extensive appliance reference designs from Microchip, reducing time-to-market. The 2.0 V to 3.6 V supply simplifies integration with 3.3 V sensor signal chains and 5 V relay-driver interfaces via level shifters. Designers should add a watchdog timer and brown-out reset for IEC 60335 household appliance safety compliance.
Empfohlen
Motor Control Reference Designs
The PIC18F84J11T-I/PT powers BLDC, PMSM, and stepper motor control reference designs where 10 MIPS and 70 I/O are sufficient. According to the PIC18 J-series datasheet, the 10-bit ADC samples back-EMF and current-sense shunts, the enhanced PWM module (with up to 6 outputs) drives gate-driver ICs, and the EUSART connects to a host HMI. Its 16 KB Flash holds sensorless or Hall-sensor BLDC firmware like Microchip's AN1078. Unlike specialized motor-control MCUs, the PIC18F84J11 also runs general-purpose user code on the same die, reducing system complexity. Engineers should pair this MCU with gate drivers like the MCP14A0602 and use the CTMU for precise timing measurements. The 80-TQFP package provides sufficient ground pins for clean return-current paths.
Empfohlen
Lighting Control Boards
Architectural and stage lighting control boards use the PIC18F84J11T-I/PT to drive multiple DMX512 channels and PWM-dimmed LED strings. According to the Microchip datasheet, the 70 I/O can decode DMX512 on a USART with hardware timer capture, while remaining PWMs drive LED drivers via 0-10 V analog or PWM outputs. Its 40 MHz core executes DMX frame buffering and smooth fade transitions in real time. The 16 KB Flash stores scene presets and DMX personalities, and the industrial temperature range suits outdoor-rated fixtures. Unlike 32-bit ARM alternatives, the PIC18F84J11 reduces standby power and BOM cost for high-channel-count fixtures. Engineers should add RS-485 transceivers for DMX and ensure proper isolation per the DMX512 electrical specification.
Empfohlen
Zusammenfassung der empfohlenen Produkte
Technische Referenzdaten für PIC18F84J11T-I/PT – Vergleich, Designhinweise und Compliance-Informationen.
Auswahlhilfe
Vergleich mit Alternativen
| Parameter | Dieses Produkt | PIC18F84J11-I/PT | PIC18F85J11-I/PT | PIC18F86J11-I/PT | PIC18F87J10-I/PT | PIC18F67J10-I/PT |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | TQFP-80 (12x12 mm) | TQFP-80 - same | TQFP-80 - same | TQFP-80 - same | TQFP-80 - same | TQFP-80 - same |
| Flash Memory | 16 KB | 16 KB | 32 KB | 64 KB | 128 KB | 128 KB |
| RAM | 1 KB | 1 KB | 2 KB | 4 KB | 4 KB | 4 KB |
| Maximum Clock Speed | 40 MHz | 40 MHz | 40 MHz | 40 MHz | 40 MHz | 40 MHz |
| I/O Pins | 70 | 70 | 70 | 70 | 70 | 70 |
| Operating Voltage | 2.0 V to 3.6 V | 2.0 V to 3.6 V | 2.0 V to 3.6 V | 2.0 V to 3.6 V | 2.0 V to 3.6 V | 2.0 V to 3.6 V |
| Operating Temperature | -40 °C to +85 °C | -40 °C to +85 °C | -40 °C to +85 °C | -40 °C to +85 °C | -40 °C to +85 °C | -40 °C to +85 °C |
| Packaging Format | Tape & Reel | Tray | Tray | Tray | Tray | Tray |
| Unit Price (qty-1, USD approx) | 6.50 | 6.30 | 7.20 | 8.10 | 9.50 | 9.40 |
Wichtigste Unterscheidungsmerkmale
- Cost-optimized 16 KB Flash in TQFP-80 (vs. PIC18F85J11-I/PT)
- Tape-and-Reel packaging for SMT lines (vs. PIC18F84J11-I/PT)
- nanoWatt XLP low-power technology (vs. PIC18F67J10-I/PT)
Designhinweise
Decouple each VDD/AVDD pin with a 100 nF ceramic capacitor placed within 3 mm of the pin, and add a single bulk 10 µF tantalum or ceramic capacitor near the supply entry point. According to Microchip's PIC18 J-series datasheet, the 2.0 V to 3.6 V supply rail must remain stable under load transients; an LDO such as MCP1700 is recommended for battery-powered designs. The AVDD pin requires an additional ferrite bead + 10 µF capacitor to isolate analog reference noise from the digital core.
Use a 4-layer PCB stack-up with a continuous ground plane directly beneath the TQFP-80 footprint. According to standard QFP-80 routing practice, fan out inner-row pins on internal layers and outer-row pins on top, keeping trace lengths matched for parallel buses. Exposed thermal pad connection is not present on this TQFP, but a copper pour under the package improves thermal performance by approximately 5-8 °C at full CPU load.
Three pitfalls to avoid: (1) Do not exceed the 3.6 V absolute maximum on any I/O pin - even momentary over-voltage from a relay coil back-EMF can damage the MCU. Add a flyback diode across inductive loads. (2) Do not enable the internal 8 MHz oscillator and an external crystal simultaneously - configure OSCCON correctly per the datasheet before switching clock sources. (3) Do not skip the configuration bits (CONFIG1L/1H/2L/2H/3L/3H) - leaving them at default POR state will disable the watchdog and brown-out reset, creating a brick risk on power-up glitches.
Compliance-Informationen
RoHS and REACH compliance per Microchip product page; industrial temperature grade (no AEC-Q100 automotive qualification); lead-free TQFP-80 package with matte-tin plating.
