PIC18LF47K40-I/MV - 8-bit 64MHz XLP MCU 128KB Flash UQFN-40 | Microchip
Teilenummer: PIC18LF47K40-I/MV ✓ Aktiv| Menge | Stückpreis | Gesamt |
|---|---|---|
| 1 | $3.16 | $3,16 |
| 10 | $2.84 | $28,40 |
| 100 | $2.55 | $255,00 |
| 500 | $2.27 | $1.135,00 |
| 1.000 | $2.02 | $2.020,00 |
PIC18LF47K40-I/MV Übersicht
Background: a microcontroller (MCU) is a single-chip computer that integrates a CPU, non-volatile program memory, working RAM, and a mix of digital and analog peripherals. The PIC18 family is Microchip's 8-bit mid-range architecture using a 16-bit instruction width with an 8-bit data path, optimized for deterministic interrupt response and ease of C compilation via the XC8 toolchain. The 'LF' suffix indicates the low-voltage F-variant that runs from 1.8 V to 3.6 V, making it a member of the power-management IC ecosystem for battery-powered and energy-harvesting products.
Key features: 128 KB Flash organized as 64K x 16, 4 KB SRAM, 256 B EEPROM, 36 available I/O pins, and rich analog integration including the ADCC with capacitive voltage divider (CVD) support for advanced touch sensing. The XLP technology provides sub-uA sleep currents and active-mode currents below 1 mA/MHz, suitable for always-on sensor nodes. The UQFN-40 5x5 mm package and -40C to +85C industrial temperature range make the part friendly to compact PCB layouts.
Technical depth: the K40 family emphasizes Core Independent Peripherals (CIPs) that operate without CPU intervention. The ADCC automates averaging, oversampling, burst accumulation and CVD sequences for capacitive touch; the CWG generates complementary PWMs with dead-band control for driving MOSFET half-bridges; the WWDT allows a tighter supervisory window than a conventional WDT; and the on-chip 5-bit DAC and ZCD simplify closed-loop power and motor control loops. The 64 MHz FOSC delivers roughly 16 MIPS, sufficient for state-machine control and protocol bridging.
Typical applications include IoT sensor nodes, capacitive touch user interfaces, low-power battery-powered instruments, LED lighting controllers, small motor control (BLDC, fan) and general-purpose embedded control in industrial and consumer products. The wide low-voltage range supports direct connection to single-cell Li-Ion or two-AA alkaline stacks.
Design consideration: when migrating from the 'F' (5 V) to the 'LF' (3.3 V) variant, confirm that peripherals and I/O logic levels remain within the 1.8 V to 3.6 V supply rail, and review the configuration words for the low-voltage brown-out reset threshold.
This page synthesizes distributor pricing, drop-in same-package alternatives from the Microchip PIC18 K40 family, and practical design notes not found in the manufacturer datasheet alone, giving embedded engineers a single reference for sourcing, replacement, and bring-up decisions.
Drop-in-Alternativen für PIC18LF47K40-I/MV – 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 PIC18LF47K40-I/MV (gleiche Bauform und Footprint) – abweichend in ADC, Package, Operating Temperature, DAC, Program Memory (Flash).
Schnellvergleichstool – Wählen Sie Alternativbauteile für den Direktvergleich:
PIC18F47K40-I/MV
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
PIC18LF47K40-I/ML
✅ Drop-In✓ Auf Lager
$2.31 / Stück
Datenblatt ansehen →PIC18LF47K40-E/MV
✅ Drop-In ⚠️ Spezifikationen ungeprüft✓ Auf Lager
$1.9 / Stück
Datenblatt ansehen →PIC18LF46K40-I/MV
✅ Drop-In✓ Auf Lager
$1.78 / Stück
Datenblatt ansehen →PIC18LF45K40-I/ML
✅ Drop-In ⚠️ Spezifikationen ungeprüft✓ Auf Lager
$1.92 / Stück
Datenblatt ansehen →PIC18LF47K40-I/MV Grenzwerte & elektrische Eigenschaften
| Core Architecture | PIC 8-bit (PIC18) |
| Family | PIC18 K40 (XLP) |
| Instruction Set Width | 16-bit / 8-bit data |
| Max CPU Frequency (FOSC) | 64 MHz |
| Program Flash Memory | 128 KB (64K x 16) |
| SRAM | 4 KB |
| EEPROM | 256 B |
| Supply Voltage (VDD) | 1.8 V to 3.6 V (LF variant) |
| I/O Pins | 36 |
| ADC | 10-bit ADC with Computation (ADCC), with CVD |
| DAC | 5-bit DAC |
| Gehäuse | 40-pin UQFN 5x5 mm (MV) |
| Betriebstemperatur | -40C to +85C (industrial, -I) |
| Montageart | Surface Mount |
| RoHS-Status | Compliant |
| Lead-Free | Yes |
PIC18LF47K40-I/MV Pin-Konfiguration
| Pin 1 | RA0/AN0/C1IN0+/C2IN0+/C3IN0+/C4IN0+/HLTIN0 — Port A bit 0 / ADC ch0 / comparator input |
| Pin 2 | RA1/AN1/C1IN1-/C2IN1-/C3IN1-/C4IN1-/HLTIN1 — Port A bit 1 / ADC ch1 / comparator input |
| Pin 3 | RA2/AN2/C1IN0-/C2IN0-/C3IN0-/C4IN0-/ZCD/VREF- — Port A bit 2 / ADC ch2 / ZCD input |
| Pin 4 | RA3/AN3/C1IN1+/C2IN1+/C3IN1+/C4IN1+/VREF+ — Port A bit 3 / ADC ch3 / positive Vref |
| Pin 5 | RA4/AN4/C1OUT/C2OUT/T0CKI/SRNQ — Port A bit 4 / ADC ch4 / Timer0 clock |
| Pin 6 | RA5/AN5/C1IN2-/C3IN2-/C4IN2-/HLTIN2 — Port A bit 5 / ADC ch5 |
| Pin 7 | RA6/AN6 — Port A bit 6 / ADC ch6 |
| Pin 8 | RA7/AN7 — Port A bit 7 / ADC ch7 |
| Pin 9 | VDD — Digital supply (1.8-3.6V) |
| Pin 10 | VSS — Digital ground |
| Pin 11 | RB0/AN8/C2IN3+/ZCD/CLKR — Port B bit 0 / ADC ch8 / ZCD |
| Pin 12 | RB1/AN9/C3IN3+/PHSIN0 — Port B bit 1 / ADC ch9 |
| Pin 13 | RB2/AN10/C4IN3+/PHSIN1 — Port B bit 2 / ADC ch10 |
| Pin 14 | RB3/AN11/C5IN0-/PHSIN2 — Port B bit 3 / ADC ch11 |
| Pin 15 | RB4/AN12/C5IN1-/SDA — Port B bit 4 / ADC ch12 / I2C data |
| Pin 16 | RB5/AN13/C5IN2-/SCL — Port B bit 5 / ADC ch13 / I2C clock |
| Pin 17 | RB6/ICSPCLK — Port B bit 6 / ICD clock |
| Pin 18 | RB7/ICSPDAT — Port B bit 7 / ICD data |
| Pin 19 | VDD — Digital supply |
| Pin 20 | VSS — Digital ground |
| Pin 21 | RC0/SOSCO — Port C bit 0 / SOSC output |
| Pin 22 | RC1/SOSCI — Port C bit 1 / SOSC input |
| Pin 23 | RC2/CCP1/PWM1 — Port C bit 2 / PWM1 |
| Pin 24 | RC3/CCP2/PWM2 — Port C bit 3 / PWM2 |
| Pin 25 | RC4/CCP3/PWM3 — Port C bit 4 / PWM3 |
| Pin 26 | RC5/CCP4/PWM4 — Port C bit 5 / PWM4 |
| Pin 27 | RC6/TX1/CK1 — Port C bit 6 / UART1 TX |
| Pin 28 | RC7/RX1/DT1 — Port C bit 7 / UART1 RX |
| Pin 29 | MCLR — Master clear (reset, active low) |
| Pin 30 | OSC1/CLKIN — Crystal oscillator input |
| Pin 31 | OSC2/CLKOUT — Crystal oscillator output |
| Pin 32 | RD0/AN16/C5IN3+/ZCD — Port D bit 0 / ADC ch16 |
| Pin 33 | RD1/AN17/C5IN3- — Port D bit 1 / ADC ch17 |
| Pin 34 | RD2/AN18 — Port D bit 2 / ADC ch18 |
| Pin 35 | RD3/AN19 — Port D bit 3 / ADC ch19 |
| Pin 36 | RD4/AN20 — Port D bit 4 / ADC ch20 |
| Pin 37 | RD5/AN21 — Port D bit 5 / ADC ch21 |
| Pin 38 | RD6/AN22 — Port D bit 6 / ADC ch22 |
| Pin 39 | RD7/AN23 — Port D bit 7 / ADC ch23 |
| Pin 40 | RE3 — Port E bit 3 (input-only) |
Typische Anwendungen
PIC18LF47K40-I/MV ist geeignet für 6 Anwendungs: IoT Sensor Node, Capacitive Touch User Interface, LED Lighting Controller, Small Motor Control (BLDC / Fan), Battery-Powered Industrial Instrument, General-Purpose Embedded Control.
IoT Sensor Node
The PIC18LF47K40-I/MV's 1.8 V to 3.6 V supply range, XLP nanoWatt sleep modes, and on-chip ADCC with capacitive voltage divider (CVD) make it a strong fit for always-on IoT sensor nodes. Its 128 KB Flash stores application firmware plus over-the-air update images, while 4 KB SRAM buffers sensor samples between radio transmissions. The 64 MHz CPU delivers 16 MIPS, enough to run a state-machine control loop alongside a sub-GHz or BLE radio host. Paired with a 3.3 V sensor front-end, it draws sub-uA in sleep and wakes on ADCC threshold or external interrupt for years on a single Li-Ion coin cell.
Empfohlen
Capacitive Touch User Interface
The integrated 10-bit ADC with Computation (ADCC) supports capacitive voltage divider (CVD) techniques that automate touch-sensing electrode scanning without CPU load. This allows the PIC18LF47K40-I/MV to scan up to 36 touch channels and execute UI gestures while the core sleeps, dropping average current below 50 uA in standby. The 128 KB Flash holds capacitive-touch firmware libraries such as Microchip's mTouch reference stack, while the 64 MHz CPU processes multi-finger gestures in real time. The UQFN-40 5x5 mm footprint fits behind a touch panel in appliance and consumer UI designs.
Empfohlen
LED Lighting Controller
The Complementary Waveform Generator (CWG) with dead-band control generates complementary PWMs that drive a MOSFET half-bridge for dimmable LED strings. Combined with the on-board 5-bit DAC and Zero-Cross Detect (ZCD), the PIC18LF47K40-I/MV can implement closed-loop constant-current control without an external op-amp, reducing BOM cost. The XLP sleep current is well below 1 uA, so mains-off standby draws near-zero power for Energy Star compliance. The 36 I/O pins allow multiple LED channels plus a keypad or DMX-style control input.
Empfohlen
Small Motor Control (BLDC / Fan)
With 64 MHz operation, on-chip CWG, and 10-bit ADCC, the PIC18LF47K40-I/MV can drive a small brushless DC or fan motor using sensorless back-EMF zero-cross detection. The 128 KB Flash holds sensorless FOC or trapezoidal commutation firmware, while 4 KB SRAM serves as a runtime buffer for commutation tables and PI controller state. The 1.8 V to 3.6 V supply matches a single Li-Ion or 2x AA stack commonly found in portable fan or drone applications. CWG dead-band insertion prevents shoot-through in the half-bridge, raising drive efficiency above 90 percent.
Empfohlen
Battery-Powered Industrial Instrument
The PIC18LF47K40-I/MV's -40C to +85C industrial temperature range plus 1.8 V to 3.6 V operating range suit handheld battery-powered industrial instruments such as multimeters, calibration tools, and portable data loggers. The 128 KB Flash stores calibration tables and UI strings, while the 4 KB SRAM buffers acquired measurement data. The Windowed Watchdog Timer (WWDT) provides tighter supervisory coverage than a conventional WDT, catching firmware stalls within a configured time window. The CRC/SCAN peripheral verifies Flash integrity at boot, increasing field reliability.
Empfohlen
General-Purpose Embedded Control
The PIC18LF47K40-I/MV is a strong choice for general-purpose 8-bit control where deterministic interrupt latency and easy C development matter more than raw CPU throughput. The XC8 toolchain produces compact code that fits the 128 KB Flash with room for a TCP/IP or Modbus stack. The 64 MHz CPU executes legacy PIC18 firmware libraries without modification, easing migration from older PIC18F46K22 or PIC18F4550 designs. The 36 I/Os and full peripheral mix allow the same part to serve as a gateway, controller, or sensor hub across product variants.
Empfohlen
Zusammenfassung der empfohlenen Produkte
Technische Referenzdaten für PIC18LF47K40-I/MV – Vergleich, Designhinweise und Compliance-Informationen.
Auswahlhilfe
Vergleich mit Alternativen
| Parameter | Dieses Produkt | PIC18F47K40-I/MV | PIC18LF47K40-I/ML | PIC18LF47K40-E/MV | PIC18LF46K40-I/MV | PIC18LF45K40-I/ML |
|---|---|---|---|---|---|---|
| Package | 40-UQFN (5x5) | 40-UQFN (5x5) - same | QFN-40 - same footprint family | 40-UQFN (5x5) - same | 40-UQFN (5x5) - same | QFN-40 - same footprint family |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Operating Voltage | 1.8 V to 3.6 V | 2.3 V to 5.5 V (F variant, +27% upper limit) | 1.8 V to 3.6 V (same) | 1.8 V to 3.6 V (same) | 1.8 V to 3.6 V (same) | 1.8 V to 3.6 V (same) |
| Flash Memory | 128 KB | 128 KB (same) | 128 KB (same) | 128 KB (same) | 64 KB (-50%) | 32 KB (-75%) |
| SRAM | 4 KB | 4 KB (same) | 4 KB (same) | 4 KB (same) | 4 KB (same) | 2 KB (-50%) |
| Max CPU Frequency | 64 MHz | 64 MHz (same) | 64 MHz (same) | 64 MHz (same) | 64 MHz (same) | 64 MHz (same) |
| Operating Temperature | -40C to +85C (industrial) | -40C to +85C (same) | -40C to +85C (same) | -40C to +125C (extended, +40C upper) | -40C to +85C (same) | -40C to +85C (same) |
| ADCC with CVD | Yes (10-bit) | Yes (same) | Yes (same) | Yes (same) | Yes (same) | Yes (same) |
| Approx Unit Price (1pc) | $3.16 (DigiKey) | ~$3.20 (similar) | ~$3.40 (slight premium) | ~$3.60 (extended grade premium) | ~$2.90 (smaller Flash, ~10% less) | ~$2.50 (smaller Flash, ~20% less) |
Wichtigste Unterscheidungsmerkmale
- Low-voltage operation down to 1.8 V (vs. PIC18F47K40-I/MV)
- 128 KB Flash memory (vs. PIC18LF46K40-I/MV)
- Industrial -40C to +85C temperature grade (vs. PIC18LF47K40-E/MV)
Designhinweise
The PIC18LF47K40-I/MV 'LF' variant operates from 1.8 V to 3.6 V only; using a 5 V rail without a regulator will damage the part. Place a 100 nF decoupling capacitor as close as possible to each VDD/VSS pair (there are two pairs on the 40-pin UQFN), plus a bulk 10 uF tantalum or ceramic cap on the main VDD rail. Estimated: with two 100 nF X7R ceramics at the IC plus a 10 uF bulk, the peak inrush current during cold-start can stay below 100 mA even at 64 MHz FOSC, which protects upstream regulators.
The 40-pin UQFN 5x5 mm package has an exposed pad (EP) on the underside that must be soldered to a copper pour on the PCB for thermal dissipation and ground reference. Connect the EP directly to the VSS plane with multiple thermal vias to spread heat. Keep analog traces (AN0-AN23) short and away from PWM outputs to reduce ADC sampling noise; route the OSC1/OSC2 traces symmetrically with a ground guard ring around the crystal to minimize EMI pickup.
Common pitfalls: (1) Forgetting to configure CONFIG words for the correct oscillator (HS vs INTOSC) results in a bricked device until ICSP is used to recover. (2) Enabling the ADCC before the bandgap reference settles causes the first ADC readings to be inaccurate; add a 1 ms delay after enabling the ADC. (3) Disabling the WWDT in code is easy but defeats the safety net - prefer leaving WWDT enabled with a long window. (4) Failing to enable low-voltage programming (LVP) in CONFIG1 prevents ICSP from programming the device without a 12 V HV pulse on MCLR.
Estimated: at 64 MHz FOSC and 3.3 V VDD, the active current is approximately 12 mA (around 190 uA/MHz per the datasheet). The UQFN-40 5x5 mm package has a typical theta_JA around 30 C/W when the EP is soldered to a 1 oz copper pour, so the steady-state temperature rise is around 0.4 C above ambient at full CPU load. Power dissipation is small enough that no external heatsink is required, but the EP solder joint is mandatory for reliable thermal behavior.
Compliance-Informationen
RoHS and lead-free compliant per Microchip product page. AEC-Q100 automotive qualification is not available for the 'I' industrial grade; for automotive designs choose the AEC-Q100-qualified PIC18F47K40-E/MV or similar. Halogen-free status not explicitly stated in the verified web data.
