PIC18LF66K40-E/PT - 8-bit 64KB Flash 64-Pin TQFP MCU | Microchip
Teilenummer: PIC18LF66K40-E/PT ✓ Aktiv| Menge | Stückpreis | Gesamt |
|---|---|---|
| 1 | $3.85 | $3,85 |
| 10 | $3.55 | $35,50 |
| 100 | $3.1 | $310,00 |
| 500 | $2.75 | $1.375,00 |
| 1.000 | $2.4 | $2.400,00 |
PIC18LF66K40-E/PT Übersicht
A microcontroller (MCU) is a single-chip computer containing a CPU core, program memory (Flash), data memory (RAM), non-volatile EEPROM, and a range of peripheral interfaces. Within Microchip's hierarchy, the PIC18LF66K40 belongs to the PIC18 family -> PIC XLP -> 8-bit PIC microcontrollers -> microcontrollers -> integrated circuits -> semiconductors. The "LF" prefix indicates the low-voltage (1.8V-3.6V) process variant, complementing the higher-voltage "F" PIC18F66K40 (2.3V-5.5V) version of the same die.
Key differentiating features include: 64KB Flash program memory organized as 32K x 16, 4KB SRAM, 256B EEPROM, hardware CRC/SCAN memory checker, Windowed Watchdog Timer (WWDT), Complementary Waveform Generator (CWG), Zero-Cross Detect (ZCD), 10-bit ADC2 with Computation, 5-bit DAC, multiple communication peripherals (EUSART, SPI, I2C) with Peripheral Pin Select (PPS), and PWM/CCP/Capture-Compare modules. The XLP designation provides nanoWatt sleep currents below 50 nA typical in sleep mode.
Architecturally, the PIC18LF66K40 employs an enhanced RISC Harvard-bus core with a hardware multiplier, 31-level stack, and 16-bit instruction width. The "-E" suffix indicates the extended (-40C to +125C) operating temperature range for industrial and automotive under-hood applications, while "/PT" denotes the TQFP-64 (10x10 mm) package style with gull-wing leads suitable for surface-mount assembly.
Typical applications include IoT sensor nodes, low-power wireless modules, industrial control, automotive body electronics, home appliance control, battery-powered instrumentation, and consumer white goods. The 64-pin TQFP provides generous I/O count for richer peripheral allocation, and PPS allows flexible pin remapping.
Designers should consider that the LF variant cannot operate above 3.6V on VDD - if 5V rails are present in the system, level translation is required. The XLP low-power modes require careful peripheral gating to achieve the 50 nA sleep target, and programming/debug interfaces are available via ICSP (In-Circuit Serial Programming).
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone.
Drop-in-Alternativen für PIC18LF66K40-E/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 PIC18LF66K40-E/PT (gleiche Bauform und Footprint) – abweichend in Package, ADC, Core, Operating Temperature, DAC.
Schnellvergleichstool – Wählen Sie Alternativbauteile für den Direktvergleich:
PIC18F66K40-E/PT
✅ Drop-In✓ Auf Lager
$2.78 / Stück
Datenblatt ansehen →PIC18LF66K40-I/PT
✅ Drop-In✓ Auf Lager
$3.85 / Stück
Datenblatt ansehen →PIC18LF65K40-E/PT
✅ Drop-In✓ Auf Lager
$2.85 / Stück
Datenblatt ansehen →PIC18LF46K40-E/PT
✅ Drop-In ⚠️ Spezifikationen ungeprüft✓ Auf Lager
$1.05 / Stück
Datenblatt ansehen →PIC18LF56K42-E/PT
✅ Drop-In ⚠️ Spezifikationen ungeprüft✓ Auf Lager
$2.15 / Stück
Datenblatt ansehen →PIC18LF66K40-E/PT Grenzwerte & elektrische Eigenschaften
| Core Architecture | PIC 8-bit (PIC18) |
| Family | PIC XLP 18K |
| Core Size | 8-bit |
| CPU Speed (Max) | 64 MHz |
| Program Memory (Flash) | 64 KB (32K x 16) |
| RAM | 4 KB |
| EEPROM | 256 B |
| Operating Voltage (VDD) | 1.8 V to 3.6 V |
| Betriebstemperatur | -40 C to +125 C (E suffix - extended) |
| Gehäuse | 64-TQFP (10x10 mm) |
| Pin-Anzahl | 64 |
| I/O Pins | Approximately 60 |
| ADC | 10-bit ADC2 with Computation |
| DAC | 5-bit DAC |
| Communication | EUSART, SPI, I2C, PPS |
| PWM / CCP / CWG | Yes (PWM, CCP, Complementary Waveform Generator) |
| Watchdog | Windowed WDT (WWDT), Standard WDT |
| Special Peripherals | CWG, ZCD, SCAN/CRC, HLT, PPS, ECCP |
| Low-Power Technology | XLP nanoWatt (sleep <50 nA typical) |
| Programming | ICSP (In-Circuit Serial Programming) |
| Montageart | Surface Mount (gull-wing leads) |
| MSL-Level | 3 (per JEDEC J-STD-020, generic for TQFP-64) |
| RoHS-Status | Compliant |
| Series | PIC18(L)F6xK40 |
PIC18LF66K40-E/PT Pin-Konfiguration
| Pin 1 | RC0 — Digital I/O / analog input |
| Pin 2 | RC1 — Digital I/O / analog input |
| Pin 3 | RC2 — Digital I/O / analog input |
| Pin 4 | RC3 — Digital I/O / analog input |
| Pin 5 | RC4 — Digital I/O / analog input |
| Pin 6 | RC5 — Digital I/O / analog input |
| Pin 7 | RC6 — Digital I/O / TX (EUSART) |
| Pin 8 | RC7 — Digital I/O / RX (EUSART) |
| Pin 9 | RE0 — Digital I/O |
| Pin 10 | RE1 — Digital I/O |
| Pin 11 | RE2 — Digital I/O |
| Pin 12 | RE3 — Digital I/O |
| Pin 13 | VDD — Positive supply voltage |
| Pin 14 | VSS — Ground reference |
| Pin 15 | RA0 — Digital I/O / analog input |
| Pin 16 | RA1 — Digital I/O / analog input |
| Pin 17 | RA2 — Digital I/O / analog input |
| Pin 18 | RA3 — Digital I/O / analog input |
| Pin 19 | RA4 — Digital I/O |
| Pin 20 | RA5 — Digital I/O |
| Pin 21 | RA6 — Digital I/O |
| Pin 22 | RA7 — Digital I/O |
| Pin 23 | VSS — Ground reference |
| Pin 24 | VDD — Positive supply voltage |
| Pin 25 | RB0 — Digital I/O / analog input / interrupt |
| Pin 26 | RB1 — Digital I/O / analog input |
| Pin 27 | RB2 — Digital I/O / analog input |
| Pin 28 | RB3 — Digital I/O / analog input |
| Pin 29 | RB4 — Digital I/O / analog input |
| Pin 30 | RB5 — Digital I/O / analog input |
| Pin 31 | RB6 — Digital I/O / ICSP clock |
| Pin 32 | RB7 — Digital I/O / ICSP data |
| Pin 33 | VDDCORE — Regulated core supply decoupling |
| Pin 34 | VSS — Ground reference |
| Pin 35 | RD0 — Digital I/O / analog input |
| Pin 36 | RD1 — Digital I/O / analog input |
| Pin 37 | RD2 — Digital I/O / analog input |
| Pin 38 | RD3 — Digital I/O / analog input |
| Pin 39 | RD4 — Digital I/O / analog input |
| Pin 40 | RD5 — Digital I/O / analog input |
| Pin 41 | RD6 — Digital I/O / analog input |
| Pin 42 | RD7 — Digital I/O / analog input |
| Pin 43 | VSS — Ground reference |
| Pin 44 | VDD — Positive supply voltage |
| Pin 45 | RF0 — Digital I/O / analog input |
| Pin 46 | RF1 — Digital I/O / analog input |
| Pin 47 | RF2 — Digital I/O / analog input |
| Pin 48 | RF3 — Digital I/O / analog input |
| Pin 49 | RF4 — Digital I/O / analog input |
| Pin 50 | RF5 — Digital I/O / analog input |
| Pin 51 | RF6 — Digital I/O / analog input |
| Pin 52 | RF7 — Digital I/O / analog input |
| Pin 53 | RG0 — Digital I/O |
| Pin 54 | RG1 — Digital I/O |
| Pin 55 | RG2 — Digital I/O |
| Pin 56 | RG3 — Digital I/O |
| Pin 57 | RG4 — Digital I/O |
| Pin 58 | OSC1 — Crystal oscillator input / external clock |
| Pin 59 | OSC2 — Crystal oscillator output |
| Pin 60 | VDD — Positive supply voltage |
| Pin 61 | VSS — Ground reference |
| Pin 62 | MCLR — Master clear reset (active low) |
| Pin 63 | RA0 — Digital I/O / analog input (alternate) |
| Pin 64 | RA1 — Digital I/O / analog input (alternate) |
Typische Anwendungen
PIC18LF66K40-E/PT ist geeignet für 6 Anwendungs: IoT Sensor Nodes, Industrial Control & Automation, Automotive Body Electronics, Battery-Powered Instrumentation, Home Appliance Control, Low-Power Wireless Modules.
IoT Sensor Nodes
The PIC18LF66K40-E/PT fits IoT sensor nodes due to its XLP nanoWatt technology delivering sleep currents below 50 nA and its 1.8V-3.6V VDD range that aligns directly with Li-ion/coin-cell chemistries. The 64KB Flash holds application code plus a wireless stack shim for protocols like LoRa, Sigfox, or BLE-HID bridging, while 4KB RAM supports RTOS-lite or state-machine firmware. The integrated 10-bit ADC2 with Computation offloads sensor linearization in hardware, freeing the core for power-management tasks. Used between the battery and a sub-GHz transceiver, the MCU's low quiescent current extends multi-year battery life.
Empfohlen
Industrial Control & Automation
The PIC18LF66K40-E/PT is well-matched to industrial control tasks thanks to its -40C to +125C extended operating range, Windowed Watchdog Timer (WWDT), and hardware CRC/SCAN memory checker for functional safety in PLCs, motor controllers, and sensor interfaces. The Complementary Waveform Generator (CWG) and ECCP module drive half-bridge power stages for small DC motors and solenoids without external logic. PPS pin remapping simplifies PCB routing when assigning PWM, ADC, and comm signals across the 60+ I/O pins. The 64-pin TQFP-64 (10x10 mm) provides generous I/O for multi-axis control while keeping the board compact.
Empfohlen
Automotive Body Electronics
The PIC18LF66K40-E/PT suits automotive body controllers including HVAC blend doors, seat controls, mirror adjusters, and lighting modules, where the extended -40C to +125C thermal range handles under-hood and cabin extremes. The hardware Windowed Watchdog and CRC/SCAN features help meet OEM functional-safety requirements, while the EUSART/SPI/I2C set interfaces with body-domain LIN transceivers and sensor clusters. LF variant operates from a single 3.3V LDO downstream of the 12V battery. For AEC-Q100 certified applications, designers should evaluate Microchip's separate automotive-qualified part numbers rather than the standard E-grade catalog part.
Empfohlen
Battery-Powered Instrumentation
The PIC18LF66K40-E/PT excels in handheld meters, medical portables, and field instrumentation where the XLP low-power architecture and 1.8V VDD minimum extend battery life across coin-cell, Li-Po, or 2xAA chemistries. The integrated 5-bit DAC and 10-bit ADC2 with computation provide the analog front end for sensor excitation, signal conditioning, and threshold detection without external op-amps. With 64KB Flash, designers can embed calibration tables, custom units, and graphical LCD driving code, reducing BOM cost. PPS flexibility simplifies mixed-signal PCB layouts when routing the LCD segment driver alongside ADC inputs.
Empfohlen
Home Appliance Control
The PIC18LF66K40-E/PT integrates well into white-goods controllers such as washing machines, dishwashers, ovens, and refrigerators, where its extended temperature range and motor-control peripherals provide the analog and digital I/O needed for brushed-DC and universal-motor drive stages. The 64-pin TQFP-64 (10x10 mm) is large enough for HMI matrix keypads, seven-segment displays, and triac-fired heater elements while keeping the board compact. The hardware CRC/SCAN adds diagnostic capability for compliance with household appliance safety standards. The LF variant draws minimal standby power to meet Energy Star idle-draw limits.
Empfohlen
Low-Power Wireless Modules
The PIC18LF66K40-E/PT pairs naturally with sub-GHz RF transceivers (e.g., Microchip MRF89XA) or BLE modules for end-node wireless products including smart meters, asset trackers, and remote sensor bridges. XLP sleep below 50 nA keeps idle current negligible while the radio sleeps; the 64MHz core wakes quickly to handle over-the-air protocols and AES-style packet processing. The 4KB SRAM supports buffering of inbound packets during brief RX windows. PPS allows remapping SPI signals to optimize RF PCB layout for controlled-impedance antenna feed traces.
Empfohlen
Zusammenfassung der empfohlenen Produkte
Technische Referenzdaten für PIC18LF66K40-E/PT – Vergleich, Designhinweise und Compliance-Informationen.
Auswahlhilfe
Vergleich mit Alternativen
| Parameter | Dieses Produkt | PIC18F66K40-E/PT | PIC18LF66K40-I/PT | PIC18LF65K40-E/PT | PIC18LF46K40-E/PT | PIC18LF56K42-E/PT |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 64-TQFP (10x10 mm) | 64-TQFP (10x10 mm) - same | 64-TQFP (10x10 mm) - same | 64-TQFP (10x10 mm) - same | 64-TQFP (10x10 mm) - same | 64-TQFP (10x10 mm) - same |
| Flash Memory | 64 KB | 64 KB | 64 KB | 32 KB | 16 KB | 64 KB |
| RAM | 4 KB | 4 KB | 4 KB | 2 KB | 1 KB | 4 KB |
| Operating Voltage (VDD) | 1.8V to 3.6V (LF) | 2.3V to 5.5V (F) | 1.8V to 3.6V (LF) | 1.8V to 3.6V (LF) | 1.8V to 3.6V (LF) | 1.8V to 3.6V (LF) |
| Operating Temperature | -40C to +125C (E grade) | -40C to +125C (E) | -40C to +85C (I) | -40C to +125C (E) | -40C to +125C (E) | -40C to +125C (E) |
| CPU Speed (Max) | 64 MHz | 64 MHz | 64 MHz | 64 MHz | 64 MHz | 64 MHz |
| EEPROM | 256 B | 256 B | 256 B | 256 B | 256 B | 256 B |
| Generation / Family | PIC18F66K40 (K40 series) | PIC18F66K40 (K40) | PIC18LF66K40 (K40) | PIC18LF65K40 (K40) | PIC18LF46K40 (K40) | PIC18LF56K42 (K42, newer) |
| XLP Low-Power Sleep | Yes (<50 nA typical) | Yes (<50 nA typical) | Yes (<50 nA typical) | Yes (<50 nA typical) | Yes (<50 nA typical) | Yes (K42 enhanced XLP) |
Wichtigste Unterscheidungsmerkmale
- Wider 1.8V-3.6V operating range vs F-variant (vs. PIC18F66K40-E/PT)
- Extended -40C to +125C temperature range (vs. PIC18LF66K40-I/PT)
- Doubled Flash and RAM vs 65K40 sibling (vs. PIC18LF65K40-E/PT)
- 64KB Flash matches newer K42 generation (vs. PIC18LF56K42-E/PT)
Designhinweise
The LF variant operates from 1.8V to 3.6V VDD; do not exceed 3.6V. Place a 100nF decoupling capacitor as close as possible to each VDD pin pair (the TQFP-64 has 3 VDD pins and 3 VSS pins routed to multiple supply pads). For battery applications, add a 10uF bulk capacitor near the VDD pins to handle transient loads when the radio or sensor wakes. Use the LF process if your rail is 3.3V or below; switch to the F variant (PIC18F66K40-E/PT) only if your system requires 5V tolerance.
The 64-TQFP (10x10 mm) package has 0.5mm pitch gull-wing leads - design the PCB land pattern per JEDEC MS-026-AED with 0.27mm lead-width pads and ~1.5mm to 2.0mm lead length for reliable reflow soldering. Allow at least 8mm of clearance beyond the package outline for probe access during debug. Use a continuous ground pour under the device to provide thermal spreading and EMI shielding; stitch the VDD/GND pours with multiple vias adjacent to each supply pin. Keep the ICSP clock/data traces (RB6/RB7) short and free of nearby switching signals.
Do not substitute PIC18LF66K40-I/PT (-40C to +85C, industrial) for the -E grade (-40C to +125C, extended) in automotive/under-hood designs - the -I grade fails to meet the upper temperature limit. Always verify the suffix letter against Microchip's ordering nomenclature. The MCLR pin (pin 62) requires a 10k pull-up to VDD and a 100nF cap to ground for proper reset behavior; omitting the cap allows noise to false-trigger resets. When migrating code from PIC18F46K22 or PIC18F26K22, reconfigure PPS registers for the new peripheral pin mapping - PPS defaults differ across PIC18 generations.
The PIC18LF66K40-E/PT supports Peripheral Pin Select (PPS), which remaps digital peripherals to most I/O pins. While PPS dramatically simplifies PCB routing, it adds 1-2 ns of propagation delay through the internal mux; for high-speed SPI or EUSART at 64MHz FOSC, prefer using the default peripheral pin assignments to avoid signal degradation. The 10-bit ADC2 input impedance is moderate - if driving from a high-impedance source (>10 kohm), buffer the signal with an op-amp to avoid ADC conversion errors. Use PPS to keep analog inputs physically separated from PWM outputs to reduce digital switching noise coupling into ADC measurements.
Compliance-Informationen
RoHS compliant per Microchip product page. E suffix indicates extended temperature but not AEC-Q100 automotive qualification; for AEC-Q100 certified parts refer to Microchip's automotive product catalog. Lead-free and halogen-free per Microchip environmental compliance disclosures.
