PIC18F47Q43-E/P - 8-bit 64MHz 128KB FLASH XLP MCU | Microchip
MPN: PIC18F47Q43-E/P ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $4.16 | $4.16 |
| 10 | $3.74 | $37.40 |
| 100 | $3.21 | $321.00 |
| 500 | $2.85 | $1,425.00 |
| 1,000 | $2.62 | $2,620.00 |
PIC18F47Q43-E/P Overview
What is a PIC18 microcontroller? A PIC18 microcontroller is a high-performance 8-bit Harvard-architecture MCU from Microchip Technology, built on enhanced instruction set with hardware multiply and 31-level stack. It belongs to the broader category of 8-bit microcontrollers within the embedded computing hierarchy: microcontroller -> embedded processor -> semiconductor. The PIC18 family bridges legacy 8-bit designs and modern peripherals, offering DMA, configurable logic cells (CLCs), 16-bit PWMs, and an Analog-to-Digital Converter with Computation (ADCC) for sophisticated hardware customization with reduced firmware load.
The PIC18F47Q43-E/P features 128 KB FLASH, 8192 bytes RAM, 1024 bytes EEPROM, an 8-bit instruction word, and operates from 2.3V to 5.5V. It integrates six DMA controllers, three 16-bit dual PWMs (six PWM outputs total), CLCs, an ADCC, multiple UART/SPI/I2C peripherals, a Zero-Cross Detect module, and a 1.024V/2.048V/4.096V Fixed Voltage Reference. Its nanoWatt XLP technology provides ultra-low sleep current for battery-powered designs.
Typical applications include IoT sensor nodes, motor control, LED lighting controllers, and human-machine interface (HMI) panels. The Q43 family's CIPs allow designers to offload tasks such as signal conditioning, waveform generation, and inter-peripheral triggers from the CPU, enabling deterministic real-time response.
When designing with this part, ensure decoupling with 100 nF ceramic capacitors on each VDD pin and a 10 µF bulk capacitor near the IC. Use the on-chip debugger (ICD) for in-circuit firmware development, and select the appropriate Configuration Words (CONFIG) for oscillator, watchdog, and code protection settings per the datasheet.
This page synthesizes distributor pricing, drop-in alternatives from the same PIC18-Q43 family, and practical design notes not collected in any single manufacturer PDF.
Drop-in alternatives for PIC18F47Q43-E/P — 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 PIC18F47Q43-E/P (same form factor and footprint) — differing in Package, ADC, DAC, Program Memory (Flash), Core Architecture.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC18F47Q43-I/P
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$2.95 / Unit
View Datasheet →PIC18F46Q43-I/P
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$1.52 / Unit
View Datasheet →PIC18F45Q43-I/P
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$2.62 / Unit
View Datasheet →PIC18F47Q10-E/P
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$2.18 / Unit
View Datasheet →PIC18F47K42-E/P
✅ Drop-In✓ In Stock
$5.2 / Unit
View Datasheet →PIC18F47K40-E/PT
✅ Drop-In✓ In Stock
$2.1 / Unit
View Datasheet →PIC18F47Q43-E/P Maximum Ratings & Electrical Characteristics
| Core Architecture | PIC18 (8-bit) |
| Program Memory (FLASH) | 128 KB (128K x 8) |
| RAM | 8192 bytes |
| Data EEPROM | 1024 bytes |
| Operating Frequency | 64 MHz maximum |
| Operating Voltage Range | 2.3 V to 5.5 V |
| Instruction Word Width | 16-bit (8-bit data path) |
| Pin Count | 40 |
| Package | 40-pin PDIP (P) |
| Mounting Type | Through-Hole (DIP) |
| Temperature Range (operating) | -40 C to +125 C (E = Extended) |
| I/O Pins | 36 |
| DMA Controllers | 6 |
| 16-bit PWM Channels | 3 (6 outputs) |
| UART Peripherals | 5 (one supports LIN/DMX/DALI) |
| Fixed Voltage Reference | 1.024 V / 2.048 V / 4.096 V |
| Low-Power Technology | nanoWatt XLP |
| Functional Safety (FuSa) | Yes |
| RoHS Status | Compliant |
PIC18F47Q43-E/P Pin Configuration
| Pin 1 | RE3/MCLR — Digital I/O / Master Clear (Reset) |
| Pin 2 | RA0 — Digital I/O port A bit 0 |
| Pin 3 | RA1 — Digital I/O port A bit 1 |
| Pin 4 | RA2 — Digital I/O port A bit 2 |
| Pin 5 | RA3 — Digital I/O port A bit 3 |
| Pin 6 | RA4 — Digital I/O port A bit 4 |
| Pin 7 | RA5 — Digital I/O port A bit 5 |
| Pin 8 | RA6 — Digital I/O port A bit 6 |
| Pin 9 | RA7 — Digital I/O port A bit 7 |
| Pin 10 | VSS — Ground reference |
| Pin 11 | VDD — Positive supply voltage |
| Pin 12 | RB0 — Digital I/O port B bit 0 |
| Pin 13 | RB1 — Digital I/O port B bit 1 |
| Pin 14 | RB2 — Digital I/O port B bit 2 |
| Pin 15 | RB3 — Digital I/O port B bit 3 |
| Pin 16 | RB4 — Digital I/O port B bit 4 |
| Pin 17 | RB5 — Digital I/O port B bit 5 |
| Pin 18 | RB6 — Digital I/O port B bit 6 / ICSP programming clock |
| Pin 19 | RB7 — Digital I/O port B bit 7 / ICSP programming data |
| Pin 20 | VSS — Ground reference |
| Pin 21 | VDD — Positive supply voltage |
| Pin 22 | RC0 — Digital I/O port C bit 0 |
| Pin 23 | RC1 — Digital I/O port C bit 1 |
| Pin 24 | RC2 — Digital I/O port C bit 2 |
| Pin 25 | RC3 — Digital I/O port C bit 3 |
| Pin 26 | RC4 — Digital I/O port C bit 4 |
| Pin 27 | RC5 — Digital I/O port C bit 5 |
| Pin 28 | RC6 — Digital I/O port C bit 6 |
| Pin 29 | RC7 — Digital I/O port C bit 7 |
| Pin 30 | VSS — Ground reference |
| Pin 31 | VDD — Positive supply voltage |
| Pin 32 | RD0 — Digital I/O port D bit 0 |
| Pin 33 | RD1 — Digital I/O port D bit 1 |
| Pin 34 | RD2 — Digital I/O port D bit 2 |
| Pin 35 | RD3 — Digital I/O port D bit 3 |
| Pin 36 | RD4 — Digital I/O port D bit 4 |
| Pin 37 | RD5 — Digital I/O port D bit 5 |
| Pin 38 | RD6 — Digital I/O port D bit 6 |
| Pin 39 | RD7 — Digital I/O port D bit 7 |
| Pin 40 | VSS — Ground reference |
Typical Applications
PIC18F47Q43-E/P is suitable for 6 applications: IoT Sensor Nodes, Motor Control and BLDC Drives, LED Lighting Controllers, Human-Machine Interface (HMI) Panels, Functional Safety Appliances, Automotive Body Electronics.
IoT Sensor Nodes
The PIC18F47Q43-E/P is well-suited for IoT sensor node firmware, where 128 KB FLASH and 8 KB RAM support application code plus connectivity stacks. The nanoWatt XLP technology provides sub-microamp sleep currents with peripheral retention, allowing the MCU to wake on sensor interrupts and run the ADC with computation (ADCC) at <1 µA average current. Combined with six DMA controllers moving ADC samples to RAM without CPU intervention, duty-cycled battery operation of 3-5 years on a single CR2032 is achievable. The 2.3-5.5 V supply range supports both 3.3 V regulated rails and direct Li-ion cells.
Recommended
Motor Control and BLDC Drives
The PIC18F47Q43-E/P excels in BLDC and stepper motor control due to its three 16-bit dual PWMs providing six complementary PWM outputs with programmable dead time, plus DMA-driven ADCC sampling for current feedback. Vectored interrupt latency of three instruction cycles ensures deterministic commutation timing, critical for sensorless FOC algorithms. The 64 MHz CPU delivers 16 MIPS, sufficient for inner-loop control loops running at 20-50 kHz. The Functional Safety (FuSa) feature set also supports safety-related motor control functions per IEC 60730 class B.
Recommended
LED Lighting Controllers
For addressable LED lighting and dimming controllers, the PIC18F47Q43-E/P's three 16-bit PWMs drive high-resolution 16-bit dimming without CPU load, while the CLCs combine PWM signals and zero-cross detect inputs for TRIAC phase-control dimming. DMA moves color data into PWM registers autonomously, freeing the CPU for animation logic over UART or SPI from a host controller. With 5 UARTs (one supports DMX), the same MCU can act as a DMX-512 slave or DALI bridge for professional lighting fixtures.
Recommended
Human-Machine Interface (HMI) Panels
The PIC18F47Q43-E/P powers HMI panels with up to 36 I/O pins for direct matrix keypad and 7-segment LED drive, plus SPI/I2C interfaces for LCD or TFT display controllers. The 128 KB FLASH supports graphical menu structures, while the ADCC with averaging handles analog keypad or slider inputs. Five UARTs enable simultaneous connections to multiple industrial buses (RS-232, RS-485), making this MCU a viable controller for low-cost industrial touch interfaces where a more powerful ARM Cortex-M is overkill.
Recommended
Functional Safety Appliances
The PIC18F47Q43-E/P's Functional Safety (FuSa) feature set simplifies compliance with IEC 60730 Class B for white goods such as washing machines, dishwashers, and ovens. Features include hardware CRC, windowed watchdog timer, oscillator fail detection, and configurable fault response. Combined with the ADCC for sensor monitoring and PWM for motor/valve control, this single-chip solution replaces multi-MCU safety architectures. The -40 to +125 C extended temperature range suits demanding appliance environments.
Recommended
Automotive Body Electronics
The PIC18F47Q43-E/P fits automotive body controllers for window lifters, mirror adjusters, and seat controllers where LIN bus connectivity and motor drive are required. One of its five UARTs supports LIN 2.x, while the ADCC reads potentiometer positions for mirror/seat memory functions. The 16-bit PWMs drive small brushed DC motors with smooth ramps. Although this part is not AEC-Q100 qualified (select the Q43 -I/SP automotive grade for that), the extended temperature rating supports under-dash body electronics positions.
Recommended
Recommended Products Summary
Engineering reference data for PIC18F47Q43-E/P — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC18F47Q43-I/P | PIC18F46Q43-I/P | PIC18F45Q43-I/P | PIC18F47Q10-E/P | PIC18F47K42-E/P | PIC18F47K40-E/PT |
|---|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 40-pin PDIP | 40-pin PDIP - same | 40-pin PDIP - same | 40-pin PDIP - same | 40-pin PDIP - same | 40-pin PDIP - same | 40-pin PDIP - same |
| FLASH Memory | 128 KB | 128 KB | 96 KB | 64 KB | 128 KB | 128 KB | 128 KB |
| RAM | 8192 bytes | 8192 bytes | 8192 bytes | 8192 bytes | 8192 bytes | 8192 bytes | 4096 bytes |
| Max Operating Frequency | 64 MHz (16 MIPS) | 64 MHz | 64 MHz | 64 MHz | 64 MHz | 64 MHz | 64 MHz |
| DMA Controllers | 6 | 6 | 6 | 6 | 0 | 0 | 0 |
| ADCC | Yes (computation) | Yes | Yes | Yes | No (basic ADC) | No | No |
| Functional Safety (FuSa) | Yes | Yes | Yes | Yes | No | No | No |
| Temperature Range | -40 to +125 C (Extended) | -40 to +85 C (Industrial) | -40 to +85 C | -40 to +85 C | -40 to +125 C | -40 to +125 C | -40 to +125 C |
Key Differentiators
- Functional Safety (FuSa) feature set integrated on-chip (vs PIC18F47K42-E/P)
- Six DMA controllers and ADCC offload CPU in real-time control (vs PIC18F47K40-E/PT)
- Configurable Logic Cells (CLCs) enable hardware state machines (vs PIC18F47Q10-E/P)
Design Notes
Place a 100 nF ceramic decoupling capacitor on every VDD pin (pins 11, 21, 31) and a single 10 µF bulk tantalum or ceramic capacitor near the device. Route the VDD/VSS pairs as wide, short traces or polygons to minimize supply inductance. For battery applications using the nanoWatt XLP sleep mode, ensure the bulk capacitor value does not exceed the inrush current rating of the source - a 10 µF ceramic is generally acceptable. Use separate analog and digital supply routing if ADCC accuracy is critical.
Place the 40-pin PDIP socket (or directly soldered device) so that the MCLR/RE3 pin (pin 1) and the ICSP pins (RB6/PGEC, RB7/PGED) are accessible for in-circuit programming and debugging. The MPLAB ICD 4 or PICkit 5 tool connects to these pins via a 6-pin ICSP header. Keep the ICSP traces short and isolated from high-current motor or PWM signals to avoid programming glitches.
Do not forget to configure the Configuration Words (CONFIG1-CONFIG5) correctly during programming - in particular the oscillator selection, watchdog timer enable, code protection, and LVP (Low-Voltage Programming) bit. Setting LVP to DISABLED on a fresh part allows RB5 to be used as a normal I/O pin; leaving LVP enabled can prevent high-voltage ICSP from working. Also verify the BOR (Brown-Out Reset) voltage threshold is appropriate for your supply rail (typically 2.85 V for 3.3 V systems or 4.35 V for 5 V systems).
The PIC18F47Q43-E/P's 16-bit PWMs output high-frequency signals (>50 kHz) with sharp edges - keep PWM traces short and avoid running them parallel to sensitive analog signals (e.g. ADCC inputs) without a ground guard trace. Place a small RC filter (10 ohm + 100 pF) at the gate of power MOSFETs driven by PWM outputs to slow the edge and reduce EMI. Use the CLC peripheral to generate hardware dead-time between complementary PWMs for motor control applications.
Compliance Information
RoHS and REACH compliant per Microchip product page. Not AEC-Q100 qualified (select Q43 -I/SP automotive grade for that). Lead-free and halogen-free. Compliant with conflict minerals regulations.
