PIC18F47J53-I/ML - 8-bit MCU 48MHz 128KB Flash USB QFN-44 | Microchip
MPN: PIC18F47J53-I/ML ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $7.95 | $7.95 |
| 10 | $7.18 | $71.80 |
| 100 | $6.42 | $642.00 |
| 500 | $5.81 | $2,905.00 |
| 1,000 | $5.2 | $5,200.00 |
PIC18F47J53-I/ML Overview
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, volatile and non-volatile memory, peripherals, and I/O into one package. The PIC18 family uses Microchip's enhanced RISC architecture with 16-bit opcodes and Harvard bus topology, targeting general-purpose embedded control. The PIC18F47J53 sits in the J-series sub-family which combines high peripheral integration with the nanoWatt XLP power-management extensions, designed for applications balancing connectivity, mixed-signal sensing, and battery life.
Key features include an integrated full-speed USB 2.0 device/host/OTG transceiver (eliminates external USB PHY), 12-bit ADC with up to 13 input channels, two analog comparators, four 16-bit timers, two MSSP (SPI/I2C) modules, two enhanced USARTs, and an mTouch capacitive-touch sensing peripheral. The deep-sleep idle mode draws currents in the nanoamp range, enabling years of battery life in maintenance-free sensor nodes. Hardware RTCC and a 31 kHz secondary oscillator support always-on calendar functions.
The IC uses a 3.3V core with internal LDO regulators supporting 2.0-3.6V VBAT operation. The 44-pin QFN (8x8 mm) package allows compact 4-layer PCB placement while the exposed thermal pad enables sustained 12 MIPS operation without throttling. Programming is supported through ICSP and JTAG, and the self-programmable Flash enables in-field firmware updates over USB, I2C, or UART.
Typical applications include USB Human Interface Devices (HID keyboards, mice, custom peripherals), industrial data loggers, USB-to-UART bridges, and consumer medical devices. The combination of full-speed USB 2.0, ample Flash/RAM, and low standby current makes it well suited to edge-of-network IoT endpoints requiring tether-powered or battery operation. Designers also leverage it in automotive aftermarket accessories and e-metering thanks to extensive I/O and cipher-friendly peripherals.
When designing with this device, ensure the 3.3V regulator has at least 1uF of low-ESR ceramic decoupling near the VCAP pin and that the USB D+/D- traces are 90 ohm differential and length-matched within 2 mm. The VUSB pin requires a 10uF+capacitor and proper ferrite bead isolation from VDD to prevent digital switching noise from degrading USB signalling. The QFN exposed pad must be soldered to a continuous ground plane for thermal dissipation and electrical performance.
Drop-in alternatives for PIC18F47J53-I/ML — 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 PIC18F47J53-I/ML (same form factor and footprint) — differing in Package, ADC, Timers, Operating Temperature, Communication.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC18F46J53-I/ML
✅ Drop-In📋 Reference alternative (not in catalog)
PIC18F46J13-I/ML
✅ Drop-In✓ In Stock
$4.38 / Unit
View Datasheet →PIC18LF46J53-I/ML
✅ Drop-In📋 Reference alternative (not in catalog)
PIC18F46K80-I/ML
✅ Drop-In📋 Reference alternative (not in catalog)
PIC18F47J53-I/PT
✅ Drop-In✓ In Stock
$3.65 / Unit
View Datasheet →PIC18F46J53-I/PT
✅ Drop-In📋 Reference alternative (not in catalog)
PIC18F4550-I/ML
✅ Drop-In📋 Reference alternative (not in catalog)
PIC18F47J53-I/ML Maximum Ratings & Electrical Characteristics
| Series | PIC18F J-series, nanoWatt XLP |
| Core | PIC18 8-bit RISC, 16-bit opcode, Harvard |
| Max CPU Frequency | 48 MHz (12 MIPS) |
| Flash Program Memory | 128 KB (64K x 16) |
| RAM | 4 KB |
| USB | USB 2.0 Full-Speed Device/Host/OTG, internal transceiver |
| Supply Voltage (VDD) | 2.0 V to 3.6 V |
| I/O Pins | 36 |
| ADC | 12-bit, 13 input channels |
| Comparators | 2 analog comparators |
| Timers | 4 x 16-bit, 1 x 8-bit |
| Communication | 2x MSSP (SPI/I2C), 2x EUSART, USB |
| Operating Temperature | -40C to +85C (Industrial) |
| Package | 44-QFN (8x8 mm) with EP |
| Mounting Type | Surface Mount |
| MSL Level | 3 (168 hours) |
| RoHS Status | Compliant |
| Programming | ICSP, JTAG, Self-programmable Flash |
| Capacitive Touch | mTouch peripheral included |
| Internal Regulator | 3.3V core LDO from VBAT |
PIC18F47J53-I/ML Pin Configuration
| Pin 1 | RP21/RGND/AN6 — I/O, analog input 6 |
| Pin 2 | RP22/AN7 — I/O, analog input 7 |
| Pin 3 | RB5/KBI1/AN11 — I/O, analog input 11 |
| Pin 4 | RB4/KBI0/AN10 — I/O, analog input 10 |
| Pin 5 | RB3/AN9/CCP2 — I/O, analog input 9, CCP2 |
| Pin 6 | RB2/AN8 — I/O, analog input 8 |
| Pin 7 | RB1/AN10/RTCC — I/O, RTCC output |
| Pin 8 | RB0/AN12/INT0 — I/O, external interrupt 0 |
| Pin 9 | RC1/RP9 — I/O |
| Pin 10 | RC0 — I/O |
| Pin 11 | RC6/RP17/TX1 — I/O, UART1 TX |
| Pin 12 | VUSB/VDD — USB transceiver supply |
| Pin 13 | D- — USB D- data line |
| Pin 14 | D+ — USB D+ data line |
| Pin 15 | VSS — Ground |
| Pin 16 | VDD — Digital supply 2.0-3.6 V |
| Pin 17 | VCAP — Internal regulator output - 1uF cap to VSS |
| Pin 18 | RA0/AN0 — I/O, analog input 0 |
| Pin 19 | RA1/AN1 — I/O, analog input 1 |
| Pin 20 | RA2/AN2 — I/O, analog input 2 |
| Pin 21 | RA3/AN3 — I/O, analog input 3 |
| Pin 22 | RA5/AN4 — I/O, analog input 4 |
| Pin 23 | RA4/AN5 — I/O, analog input 5 |
| Pin 24 | RA7/OSC1 — I/O or crystal oscillator input |
| Pin 25 | RA6/OSC2 — I/O or crystal oscillator output |
| Pin 26 | RC2/CCP1 — I/O, CCP1 |
| Pin 27 | RC3/SCL1 — I/O, I2C1 clock |
| Pin 28 | RC4/SDA1 — I/O, I2C1 data |
| Pin 29 | RC5/RP19 — I/O |
| Pin 30 | RC7/RP23/RX1 — I/O, UART1 RX |
| Pin 31 | RE0/RP0 — I/O |
| Pin 32 | RE1/RP1 — I/O |
| Pin 33 | RE2/RP2 — I/O |
| Pin 34 | RD0/RP8 — I/O |
| Pin 35 | RD1/RP10 — I/O |
| Pin 36 | RD2/RP11 — I/O |
| Pin 37 | RD3/RP12 — I/O |
| Pin 38 | RD4/RP13 — I/O |
| Pin 39 | RD5/RP14 — I/O |
| Pin 40 | RD6/RP15 — I/O |
| Pin 41 | RD7/RP16 — I/O |
| Pin 42 | RF7/RP31 — I/O |
| Pin 43 | RF6/RP30 — I/O |
| Pin 44 | RF5/RP29 — I/O |
Typical Applications
PIC18F47J53-I/ML is suitable for 6 applications: USB Human Interface Devices (HID), USB-to-UART/I2C/SPI Bridge, Industrial Data Logger with USB Stick Interface, mTouch Capacitive Sensing Control Panels, Handheld Medical Point-of-Care Devices, Automotive Aftermarket and Tethered Accessories.
USB Human Interface Devices (HID)
The PIC18F47J53-I/ML is well-suited for USB HID peripherals because of its integrated full-speed USB 2.0 transceiver (no external PHY required) and 128 KB Flash for USB stack plus application code. The 4 KB RAM comfortably fits HID class drivers and consumer-report buffers, while the 12 MIPS CPU sustains polling at the 1 ms USB-frame interval. Designers connect D+/D- with 90 ohm differential, length-matched traces, and rely on the internal 1.5 kohm pull-up on D+ for bus-powered enumeration. Microchip's USB Framework supports HID composite classes, allowing keyboards, mice, and vendor-defined reports without external drivers.
Recommended
USB-to-UART/I2C/SPI Bridge
The PIC18F47J53-I/ML's USB 2.0 full-speed plus two MSSP (SPI/I2C) and two EUSART modules enable a single-chip USB-class bridge mapping any PC-side port to embedded serial buses. The 128 KB Flash hosts CDC/I2C-over-USB class drivers, while the 12 MIPS throughput handles 1 Mbaud UART and 400 kHz I2C without CPU saturation. Industrial users pair it with external RS-485 transceivers (e.g. MAX485) or optocouplers for isolated debug channels. The 44-QFN footprint keeps the bridge under 10 mm x 10 mm, ideal for cable-end dongles.
Recommended
Industrial Data Logger with USB Stick Interface
Industrial data loggers benefit from the PIC18F47J53-I/ML's 128 KB Flash (firmware plus file-system compression), USB 2.0 FS (mass-storage class to removable FAT-formatted flash), and 4 KB RAM (page buffers). The 12-bit ADC at 100 ksps captures analog sensor channels, while the 36 I/O lines drive SD-card interfaces, keypad scanning, and 4-20 mA front-ends. The nanoWatt XLP deep-sleep mode drops quiescent current to a few uA between samples - critical for remote or battery telemetry nodes. The industrial -40C to +85C rating supports outdoor cabinet deployment.
Recommended
mTouch Capacitive Sensing Control Panels
Consumer and appliance control panels leverage the PIC18F47J53-I/ML's mTouch peripheral for up to 13 capacitive buttons or sliders with zero external components beyond PCB traces. The 48 MHz core debounces, implements scrolling gestures, and updates an LED or e-ink display via the integrated EUSART modules. The 128 KB Flash holds Ziegler-Nichols-style tuning graphs and noise-immunity lookup tables, while the 4 KB RAM supports concurrent scanning on multiple ports. The 36 I/O drive multiplexed LED matrices or LCD segments without level shifters.
Recommended
Handheld Medical Point-of-Care Devices
Portable medical devices benefit from the PIC18F47J53-I/ML's USB 2.0 (for charging, data export, and firmware updates), low-power nanoWatt XLP modes (extending battery life between charges), and 12-bit ADC for sensor signal conditioning. The 128 KB Flash stores patient logs, calibration curves, and on-display graphics, while the 4 KB RAM is sufficient for waveform capture and sliding-window analysis. The 44-QFN footprint suits handheld form factors and the -40C to +85C range covers consumer-environment temperature stress. Microchip's Class B safety library supports IEC 60730 firmware-check routines.
Recommended
Automotive Aftermarket and Tethered Accessories
The PIC18F47J53-I/ML powers automotive aftermarket accessories via 12V-to-3.3V regulation; non-automotive (-I) commercial grade supports -40C to +85C for cabin-area modules. Integrated USB 2.0 FS provides device and charging port for infotainment tethering, while the 12-bit ADC and two analog comparators read fuel/pressure sensors. The 36 I/O control relays, LED drivers, and CAN side-cars; designers add CAN through PIC18F46K80-I/ML when the on-chip ADC + USB combination is required alongside CAN. Note: for AEC-Q100 applications select the automotive variant.
Recommended
Recommended Products Summary
Engineering reference data for PIC18F47J53-I/ML — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC18F46J53-I/ML | PIC18F46J13-I/ML | PIC18LF46J53-I/ML | PIC18F46K80-I/ML | PIC18F47J53-I/PT |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 44-QFN (8x8 mm) EP | 44-QFN (8x8 mm) EP - same | 44-QFN (8x8 mm) EP - same | 44-QFN (8x8 mm) EP - same | 44-QFN (8x8 mm) EP - same | 44-TQFP (10x10 mm) - different package |
| Flash Memory | 128 KB (64K x 16) | 64 KB | 64 KB | 64 KB | 64 KB | 128 KB (same) |
| RAM | 4 KB | 4 KB | 3.7 KB | 4 KB | 3.6 KB | 4 KB |
| CPU Frequency | 48 MHz / 12 MIPS | 48 MHz / 12 MIPS | 48 MHz / 12 MIPS | 48 MHz / 12 MIPS | 64 MHz / 16 MIPS | 48 MHz / 12 MIPS |
| USB Interface | USB 2.0 FS Device/Host/OTG | USB 2.0 FS Device/Host/OTG | USB 2.0 FS Device | USB 2.0 FS Device/Host/OTG | USB 2.0 FS Device only | USB 2.0 FS Device/Host/OTG |
| CAN Interface | No | No | No | No | Yes (ECAN) | No |
| Operating Voltage | 2.0 V to 3.6 V | 2.0 V to 3.6 V | 2.0 V to 3.6 V | 1.8 V to 3.6 V | 1.8 V to 5.5 V | 2.0 V to 3.6 V |
| Operating Temperature | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C |
| I/O Pins | 36 | 36 | 36 | 36 | 36 | 36 |
Key Differentiators
- Highest flash density in 44-QFN PIC18F USB family (vs PIC18F46J53-I/ML)
- Full USB 2.0 OTG with internal transceiver (vs PIC18F46K80-I/ML)
- Native 2.0 V minimum supply for primary cells (vs PIC18F46J53-I/ML)
- Same die with QFN package option (vs PIC18F47J53-I/PT)
Design Notes
The PIC18F47J53-I/ML 44-QFN exposed pad (EP) MUST be soldered to a continuous ground plane for thermal sinking and electrical performance. Per the datasheet 30009964C, an unsoldered EP leads to thermal runaway and channel-shift on the analog inputs. Recommended PCB layout: 4-layer stack-up with 1 oz copper on outer layers and a 2 oz thermal pour directly under the EP, with at least 9 thermal vias stitching the EP to internal ground.
Place a 1uF+ low-ESR ceramic capacitor (X7R) on the VCAP pin (pin 17) as close as physically possible (within 1-2 mm). Place 100 nF decoupling caps adjacent to each VDD/VSS pair. USB-supplied VDD applications should add a ferrite bead between VUSB (pin 12) and VDD to prevent USB noise folding back into the analog rail. Estimated: at 48 MHz and 70% peripheral activity, ICC peaks at 25 mA; reserve 3x margin for bulk-cap sizing.
USB D+ and D- (pins 13 and 14) must be routed as a 90 ohm differential pair on the top layer (or inner with stripline), length-matched to within 2 mm and kept away from switching signals for at least 5x the trace spacing. Place the 90 ohm differential termination on the connector side; the internal USB pull-up (default 1.5 kohm from VDD) handles bus-power detection. Add ESD protection (e.g. USBLC6-2SC6) right at the connector.
Common pitfalls: (1) enabling JTAG/ICSP prevents RB5/RB6/RB7 from working as GPIO - reconfigure CONFIG3L accordingly; (2) running at 48 MHz requires HFINTOSC source selection and CPUDIV=1:1 - keep PLL block disabled if not used; (3) self-programming Flash requires unlocking the write-protected areas via the NVMCON register sequence; (4) VUSB and VDD must be tied to the same 3.3 V rail - powering VUSB alone does not energise I/O pins.
Compliance Information
RoHS compliant per Microchip product page. Industrial temperature grade only; AEC-Q100 not qualified for this part. Use automotive-prefixed variants for AEC-Q100 applications.
