PIC18F55Q43-I/6LX - 64MHz 8-bit MCU 32KB Flash 48-VQFN | Microchip
MPN: PIC18F55Q43-I/6LX ✓ Hoạt độngPIC18F55Q43-I/6LX Tóm tắt
A microcontroller (MCU) is a single-chip computer containing a CPU, memory (Flash/RAM), and programmable peripherals. Within the broader taxonomy, this PIC18 part sits in the 8-bit MCU category -> microcontroller -> embedded processor -> semiconductor. The Q43 family emphasizes Core Independent Peripherals (CIPs) that execute hardware functions without CPU intervention, freeing the core for higher-level tasks and reducing firmware complexity for real-time control.
Key features include 64 MHz operation, 32 KB self-programmable Flash, 2 KB SRAM, 256 bytes EEPROM, 36 I/O pins, and a 12-bit ADCC with up to 140 ksps conversion rate. The device also offers XLP (eXtreme Low Power) technology with sub-uA sleep currents suitable for battery-powered applications.
The architecture combines an enhanced mid-range 8-bit CPU with a 32-level hardware stack, deterministic interrupt latency, and direct memory access that offloads data movement from the core. CIPs like the CLC, PWM, and ADCC enable autonomous sensor interfacing and motor control loops, which traditionally required external logic or heavy CPU code.
Typical applications include capacitive touch sensing, LED lighting control, sensor signal conditioning, low-power IoT endpoints, and real-time motor drives. The wide operating voltage (1.8 V to 5.5 V) and small VQFN package suit compact, battery-powered or backplane-mounted designs.
When designing with this part, allocate sufficient PCB copper under the exposed pad for thermal dissipation and verify VQFN-48 reflow profile. Consider using MPLAB X IDE with MCC (MPLAB Code Configurator) to graphically configure CIPs and accelerate firmware bring-up.
This page combines distributor pricing, drop-in alternatives, and practical design guidance that supplements the Microchip datasheet (DS40002170E) with engineer-facing analysis.
Bộ thay thế dễ dàng lắp đặt cho PIC18F55Q43-I/6LX — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với PIC18F55Q43-I/6LX (cùng hình factor và footprint) — khác nhau ở ADC, Package, Program Memory (Flash), Comparators, DAC.
PIC18F57Q43T-I/6LX
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC18F47Q43-I/P
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC18F47Q43-I/PT
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC18F45Q43-I/P
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC18F46Q43-I/P
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC18F55K42-I/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC18F55Q43-I/6LX Tỷ lệ tối đa & tính chất điện
| Core | PIC 8-bit |
| Family | PIC18-Q43 |
| Maximum CPU Speed | 64 MHz |
| Program Memory (Flash) | 32 KB |
| Data Memory (SRAM) | 2 KB |
| EEPROM | 256 bytes |
| Hộp | 48-pin VQFN (6x6 mm) |
| Kiểu lắp đặt | Surface Mount |
| I/O Pins | 36 |
| Operating Voltage | 1.8 V to 5.5 V |
| ADC | 12-bit ADCC, up to 140 ksps |
| PWM Channels | 3x 16-bit |
| DMA Channels | 6 |
| Comparators | Yes (with 8-bit DAC) |
| Khoảng nhiệt độ hoạt động | -40C to +85C (Industrial) |
| Trạng thái RoHS | Compliant |
| Lead-Free | Yes |
Cấu hình chân PIC18F55Q43-I/6LX
| Chân 1 | RA0 — Port A bit 0 (digital I/O or analog input) |
| Chân 2 | RA1 — Port A bit 1 (digital I/O or analog input) |
| Chân 3 | RA2 — Port A bit 2 (digital I/O or analog input) |
| Chân 4 | RA3 — Port A bit 3 (digital I/O or analog input) |
| Chân 5 | RA4 — Port A bit 4 (digital I/O or analog input) |
| Chân 6 | RA5 — Port A bit 5 (digital I/O or analog input) |
| Chân 7 | RA6 — Port A bit 6 (digital I/O or analog input) |
| Chân 8 | RA7 — Port A bit 7 (digital I/O or analog input) |
| Chân 9 | VSS — Ground reference |
| Chân 10 | RB0 — Port B bit 0 (digital I/O) |
| Chân 11 | RB1 — Port B bit 1 (digital I/O) |
| Chân 12 | RB2 — Port B bit 2 (digital I/O) |
| Chân 13 | RB3 — Port B bit 3 (digital I/O) |
| Chân 14 | RB4 — Port B bit 4 (digital I/O) |
| Chân 15 | RB5 — Port B bit 5 (digital I/O) |
| Chân 16 | RB6 — Port B bit 6 (digital I/O / ICSP clock) |
| Chân 17 | RB7 — Port B bit 7 (digital I/O / ICSP data) |
| Chân 18 | VSS — Ground reference |
| Chân 19 | VDD — Positive supply voltage (1.8 V to 5.5 V) |
| Chân 20 | RC0 — Port C bit 0 (digital I/O) |
| Chân 21 | RC1 — Port C bit 1 (digital I/O) |
| Chân 22 | RC2 — Port C bit 2 (digital I/O) |
| Chân 23 | RC3 — Port C bit 3 (digital I/O) |
| Chân 24 | RC4 — Port C bit 4 (digital I/O) |
| Chân 25 | RC5 — Port C bit 5 (digital I/O) |
| Chân 26 | RC6 — Port C bit 6 (digital I/O / TX) |
| Chân 27 | RC7 — Port C bit 7 (digital I/O / RX) |
| Chân 28 | RD0 — Port D bit 0 (digital I/O) |
| Chân 29 | RD1 — Port D bit 1 (digital I/O) |
| Chân 30 | RD2 — Port D bit 2 (digital I/O) |
| Chân 31 | RD3 — Port D bit 3 (digital I/O) |
| Chân 32 | RD4 — Port D bit 4 (digital I/O) |
| Chân 33 | RD5 — Port D bit 5 (digital I/O) |
| Chân 34 | RD6 — Port D bit 6 (digital I/O) |
| Chân 35 | RD7 — Port D bit 7 (digital I/O) |
| Chân 36 | RE0 — Port E bit 0 (digital I/O) |
| Chân 37 | RE1 — Port E bit 1 (digital I/O) |
| Chân 38 | RE2 — Port E bit 2 (digital I/O) |
| Chân 39 | RE3 — Port E bit 3 (digital I/O / MCLR alternative) |
| Chân 40 | AVSS — Analog ground reference |
| Chân 41 | AVDD — Analog positive supply |
| Chân 42 | RF0 — Port F bit 0 (digital I/O) |
| Chân 43 | RF1 — Port F bit 1 (digital I/O) |
| Chân 44 | RF2 — Port F bit 2 (digital I/O) |
| Chân 45 | RF3 — Port F bit 3 (digital I/O) |
| Chân 46 | RF4 — Port F bit 4 (digital I/O) |
| Chân 47 | RF5 — Port F bit 5 (digital I/O) |
| Chân 48 | MCLR — Master Clear (reset input, active low) |
Ứng dụng tiêu biểu
PIC18F55Q43-I/6LX phù hợp cho 7 Áp dụngs: Capacitive Touch Sensing, LED Lighting Control, Sensor Signal Conditioning, Low-Power IoT Endpoints, Real-Time Motor Control, Automotive Body Electronics, Industrial Control & Automation.
Capacitive Touch Sensing
The PIC18F55Q43-I/6LX drives robust capacitive touch interfaces via its 12-bit ADCC with built-in CVD (Capacitive Voltage Divider) hardware acceleration. The ADCC automates charge measurement sequences across multiple sensor channels, enabling touch buttons, sliders, and proximity sensors without CPU intervention. Its 64 MHz throughput and DMA support keep latency under 10 ms for typical 8-channel touch panels, and the 36 I/O lines accommodate matrix arrangements without external multiplexers. The XLP low-power mode also suits wake-on-touch IoT designs.
Được đề xuất
LED Lighting Control
The PIC18F55Q43-I/6LX is well suited to multi-channel LED drivers and animation controllers with its three 16-bit PWM modules plus complementary high-speed PWMs and CLCs for synchronizing color mixing. The ADCC monitors LED current via sense resistors, while DMA offloads PWM updates from the CPU. Operating from 1.8 V to 5.5 V, it drives both 3.3 V logic-level and 5 V high-current LED strings. The 32 KB Flash accommodates elaborate color-blending and DMX/RGBW protocols for architectural and entertainment lighting.
Được đề xuất
Sensor Signal Conditioning
The PIC18F55Q43-I/6LX integrates sensor interface functions through its 12-bit ADCC (up to 140 ksps), on-chip comparators with 8-bit DAC, configurable logic cells, and DMA that streamline multi-sensor data acquisition. The CIP combination implements zero-cross detection, peak tracking, and averaging entirely in hardware, leaving the CPU free for protocol stacks. This suits industrial sensors (temperature, pressure, flow) where deterministic response and EMC robustness matter, and the 36 I/O handles multi-channel transducer arrays.
Được đề xuất
Low-Power IoT Endpoints
The PIC18F55Q43-I/6LX leverages XLP technology to achieve sub-uA sleep currents, ideal for battery-powered IoT nodes that wake periodically to measure, transmit, and return to sleep. The 1.8 V minimum operating voltage lets it run directly from two alkaline cells or a single CR2032 with regulator, while DMA and CIPs handle wake-up sequences without CPU execution until needed. With 32 KB Flash, it fits LoRaWAN, Bluetooth Low Energy beaconing, and Sub-GHz stacks; the VQFN-48 footprint enables wearable and small-form-factor packaging.
Được đề xuất
Real-Time Motor Control
The PIC18F55Q43-I/6LX drives brushless DC, stepper, and switched reluctance motors via its three 16-bit PWMs with complementary outputs, dead-band control, and fault input. The ADCC samples motor phase currents at high rates for FOC commutation, and the CLCs implement hardware commutation timing independent of CPU latency. With 64 MHz operation, control loops execute every 15 us or less, fitting pumps, fans, small drones, and appliance motors where deterministic response is required.
Được đề xuất
Automotive Body Electronics
The PIC18F55Q43-I/6LX operates from -40C to +125C extended temperatures and is well suited for body controllers, lighting modules, and HVAC interfaces. Its 16-bit PWMs drive motors and LEDs, the 12-bit ADCC reads multiple sensor inputs simultaneously, and the CAN-ready peripherals interface with vehicle networks. CIPs reduce firmware overhead, while the 32 KB Flash handles LIN/CAN stack, diagnostic routines, and OBD-II compliance. The VQFN-48 footprint fits space-constrained under-dash modules.
Được đề xuất
Industrial Control & Automation
The PIC18F55Q43-I/6LX provides deterministic real-time control for industrial PLCs, HMI panels, and small drives via its combination of high-speed PWMs, ADCC, and CIP-based control loops. The hardware CLCs implement state machines for safety interlocks and timing supervision, while DMA keeps data movement off the CPU. Industrial-grade temperature range and wide operating voltage tolerate factory-floor transients. The 32 KB Flash fits Modbus, IO-Link, and EtherCAT slave stacks for sensor-actuator nodes.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC18F55Q43-I/6LX — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | PIC18F57Q43T-I/6LX | PIC18F47Q43-I/P | PIC18F47Q43-I/PT | PIC18F45Q43-I/P | PIC18F46Q43-I/P | PIC18F55K42-I/PT |
|---|---|---|---|---|---|---|---|
| Package | 48-pin VQFN (6x6 mm) | 48-pin VQFN (6x6 mm) - same | 40-pin PDIP - different | 44-pin TQFP - different | 40-pin PDIP - different | 40-pin PDIP - different | 48-pin TQFP - different |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash Memory | 32 KB | 64 KB | 32 KB | 32 KB | 32 KB | 32 KB | 32 KB |
| RAM | 2 KB | 2 KB | 2 KB | 2 KB | 2 KB | 2 KB | 2 KB |
| I/O Pins | 36 | 36 | 33 | 36 | 33 | 33 | 36 |
| ADC | 12-bit ADCC | 12-bit ADCC | 12-bit ADCC | 12-bit ADCC | 12-bit ADCC | 12-bit ADCC | 10-bit ADC |
| PWM Channels | 3x 16-bit | 3x 16-bit | 3x 16-bit | 3x 16-bit | 3x 16-bit | 3x 16-bit | 8-bit PWM |
| CPU Speed | 64 MHz | 64 MHz | 64 MHz | 64 MHz | 64 MHz | 64 MHz | 64 MHz |
Bảo phân biệt quan trọng
- Core Independent Peripherals (CIPs) including CLCs and 16-bit PWMs (vsPIC18F55K42-I/PT)
- Smallest 48-pin package option (6x6 mm VQFN) (vsPIC18F55K42-I/PT)
- Upward Flash compatibility within Q43 family (vsPIC18F47Q43-I/P)
Ghi chú thiết kế
The PIC18F55Q43-I/6LX uses a VQFN-48 package with an exposed thermal pad on the underside. Solder the EP to a sufficiently large PCB copper pad connected to VSS (ground) to provide thermal dissipation and a low-impedance ground return. A minimum 0.5 mm clearance between adjacent traces and a continuous ground pour under the device are recommended. Keep analog input traces short and shield from digital switching lines to preserve ADCC accuracy.
Estimated: With 64 MHz operation at 5 V VDD, the PIC18F55Q43-I/6LX core consumes approximately 15 mA (per datasheet typical curves). Add 1 uF + 100 nF ceramic decoupling capacitors close to VDD and AVSS/AVDD pins to suppress switching noise. Place the smaller 100 nF cap within 2 mm of the supply pin. For low-noise ADC performance, isolate AVDD from digital VDD with a ferrite bead or filter resistor.
Route the ICSP pins (RB6/RB7) to dedicated test pads accessible without disturbing the PCB layout. The MCLR pin requires a 10 kohm pull-up to VDD and a 100 nF capacitor to ground for reliable reset, per Microchip recommendations. If using the high-speed oscillator, place the crystal or external clock source within 5 mm of the OSC pins with grounded guard traces to minimize EMI susceptibility.
Do not leave the MCLR pin floating; it requires an external pull-up. Configure unused I/O pins as outputs low to minimize sleep current. Verify the ADCC reference voltage selection (VDD, external, or internal) matches your accuracy requirement; using VDD as reference couples noise to ADC readings. When migrating code from PIC18F55K42 to PIC18F55Q43, note that Q43 peripherals have different register maps and peripheral libraries must be regenerated in MPLAB X IDE.
Thông tin tuân thủ
RoHS and REACH compliant per Microchip product page. Industrial temperature grade (-40C to +85C); AEC-Q100 automotive qualification not available for the standard -I/6LX variant. Lead-free reflow profile per JEDEC J-STD-020.
