PIC18LF6490-I/PT - 16KB Flash 8-bit MCU with LCD Driver | Microchip
Référence : PIC18LF6490-I/PT ✓ Actif| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $7.2 | $7,20 |
| 10 | $6.45 | $64,50 |
| 100 | $5.68 | $568,00 |
| 500 | $5.1 | $2 550,00 |
| 1 000 | $4.62 | $4 620,00 |
PIC18LF6490-I/PT Présentation
A PIC microcontroller (MCU) is a compact programmable processor that integrates a CPU core, Flash program memory, SRAM, peripherals, and I/O into a single chip. The PIC18 family uses an enhanced 16-bit instruction set with 8-bit data path, balancing code density with computational throughput. The PIC18LF6490 sits within the power-management hierarchy as a general-purpose MCU with integrated LCD driving and nanoWatt sleep modes, making it part of Microchip's ultra-low-power embedded controller family.
Key features include an integrated LCD driver supporting up to 48 segments with software-selectable multiplexing (static, 1/2, 1/3, 1/4) and bias configurations (static, 1/2, 1/3); nanoWatt power-management with multiple idle and sleep modes; 68 I/O pins; and a 10-bit ADC with up to 12 channels. The 64-pin TQFP package exposes nearly all available I/O, simplifying PCB routing for dense HMI front panels.
Architecturally, the PIC18LF6490 uses a RISC Harvard-bus core with hardware multiply, 32-level stack, and dual oscillator options (HS, XT, LP, RC). The integrated LCD driver can operate while the core is in Sleep, preserving battery life in metering and thermostat applications. The nanoWatt technology dynamically scales clock and peripheral power consumption based on activity, allowing average currents in the microampere range.
Typical applications include industrial control panels with LCD displays, electronic metering (electricity, gas, water), medical infusion pumps, point-of-sale terminals, automotive instrument clusters, white goods with HMI, and battery-powered sensor readouts. Designers value this MCU for its ability to drive segment LCDs directly, eliminating external driver ICs and reducing both BOM cost and PCB area.
When designing with this part, ensure the supply rail includes a 0.1 uF decoupling capacitor within 5 mm of VDD, and configure the LCD charge-pump or resistor-ladder bias network per the manufacturer's reference design. The wide operating voltage range allows direct connection to 3.3V or 5V rails, simplifying integration into mixed-voltage systems.
This page synthesizes distributor pricing across DigiKey, Mouser and Octopart, pin-compatible drop-in alternatives from the PIC18F family, and practical design notes not aggregated elsewhere on the open web.
Alternatives de remplacement direct pour PIC18LF6490-I/PT — même boîtier, compatible broche à broche. Les références à boîtier différent nécessitant une retouche du PCB sont exclues.
Variantes de cette série
Modèles de la même série directement compatibles avec PIC18LF6490-I/PT (même facteur de forme et même empreinte) — différant par Package, I/O Pins, Operating Temperature, Power-Saving Modes, ADC.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
PIC18F6490-I/PT
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
PIC18F8490-I/PT
✅ Remplacement direct✓ En stock
$5.55 / unité
Voir la fiche technique →PIC18LF8390-I/PT
✅ Remplacement direct✓ En stock
$2.1 / unité
Voir la fiche technique →PIC18LF6490T-I/PT
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
PIC18F6490T-I/PT
✅ Remplacement direct✓ En stock
$5.4 / unité
Voir la fiche technique →PIC18LF4480-I/PT
✅ Remplacement direct✓ En stock
$5.2 / unité
Voir la fiche technique →PIC18LF6490-I/PT Valeurs maximales et caractéristiques électriques
| Core Architecture | PIC18 (8-bit) |
| Program Memory (Flash) | 16 KB (8K x 16 words) |
| RAM | 768 bytes |
| Maximum CPU Speed | 40 MHz |
| Operating Voltage Range | 2.0 V to 5.5 V |
| I/O Pins | 68 |
| ADC | 10-bit, multi-channel |
| Integrated LCD Driver | Yes, up to 48 segments |
| LCD Multiplex Modes | Static, 1/2, 1/3, 1/4 MUX |
| nanoWatt Power Management | Yes (LF variant) |
| Boîtier | 64-pin TQFP (PT), 10x10 mm |
| Type de montage | Surface Mount |
| Température de fonctionnement | -40 C to +85 C (Industrial, "I") |
| Statut RoHS | Compliant |
Configuration des broches de PIC18LF6490-I/PT
| Broche 1 | RC0 — Digital I/O / LCD segment driver |
| Broche 2 | RC1 — Digital I/O / LCD segment driver |
| Broche 3 | RC2 — Digital I/O / LCD segment driver |
| Broche 4 | RC3 — Digital I/O / LCD segment driver |
| Broche 5 | RC4 — Digital I/O / LCD segment driver |
| Broche 6 | RC5 — Digital I/O / LCD segment driver |
| Broche 7 | RC6 — Digital I/O / TX/CK |
| Broche 8 | RC7 — Digital I/O / RX/DT |
| Broche 9 | RD0 — Digital I/O / LCD segment driver |
| Broche 10 | RD1 — Digital I/O / LCD segment driver |
| Broche 11 | RD2 — Digital I/O / LCD segment driver |
| Broche 12 | RD3 — Digital I/O / LCD segment driver |
| Broche 13 | RD4 — Digital I/O / LCD segment driver |
| Broche 14 | RD5 — Digital I/O / LCD segment driver |
| Broche 15 | RD6 — Digital I/O / LCD segment driver |
| Broche 16 | RD7 — Digital I/O / LCD segment driver |
| Broche 17 | VSS — Ground reference |
| Broche 18 | VDD — Positive supply voltage (2.0-5.5 V) |
| Broche 19 | RE0 — Digital I/O |
| Broche 20 | RE1 — Digital I/O |
| Broche 21 | RE2 — Digital I/O |
| Broche 22 | RE3 — Digital I/O |
| Broche 23 | RE4 — Digital I/O |
| Broche 24 | RE5 — Digital I/O |
| Broche 25 | RE6 — Digital I/O |
| Broche 26 | RE7 — Digital I/O |
| Broche 27 | RA0 — Digital I/O / analog input AN0 |
| Broche 28 | RA1 — Digital I/O / analog input AN1 |
| Broche 29 | RA2 — Digital I/O / analog input AN2 |
| Broche 30 | RA3 — Digital I/O / analog input AN3 / VREF+ |
| Broche 31 | RA4 — Digital I/O / T0CKI |
| Broche 32 | RA5 — Digital I/O / analog input AN4 |
| Broche 33 | RA6 — Digital I/O / oscillator |
| Broche 34 | RA7 — Digital I/O / oscillator |
| Broche 35 | VSS — Ground reference |
| Broche 36 | VDD — Positive supply voltage |
| Broche 37 | RF0 — Digital I/O |
| Broche 38 | RF1 — Digital I/O |
| Broche 39 | RF2 — Digital I/O |
| Broche 40 | RF3 — Digital I/O |
| Broche 41 | RF4 — Digital I/O |
| Broche 42 | RF5 — Digital I/O |
| Broche 43 | RF6 — Digital I/O |
| Broche 44 | RF7 — Digital I/O |
| Broche 45 | RG0 — Digital I/O / LCD segment driver |
| Broche 46 | RG1 — Digital I/O / LCD segment driver |
| Broche 47 | RG2 — Digital I/O / LCD segment driver |
| Broche 48 | RG3 — Digital I/O / LCD segment driver |
| Broche 49 | RG4 — Digital I/O / LCD segment driver |
| Broche 50 | MCLR — Master clear reset (active low) |
| Broche 51 | RG5 — Digital I/O / LCD segment driver |
| Broche 52 | RG6 — Digital I/O / LCD segment driver |
| Broche 53 | RG7 — Digital I/O / LCD segment driver |
| Broche 54 | RB0 — Digital I/O / interrupt |
| Broche 55 | RB1 — Digital I/O / interrupt |
| Broche 56 | RB2 — Digital I/O / interrupt |
| Broche 57 | RB3 — Digital I/O / interrupt |
| Broche 58 | RB4 — Digital I/O / interrupt |
| Broche 59 | RB5 — Digital I/O / interrupt |
| Broche 60 | RB6 — Digital I/O / interrupt / ICP |
| Broche 61 | RB7 — Digital I/O / interrupt / PGM |
| Broche 62 | VSS — Ground reference |
| Broche 63 | VDD — Positive supply voltage |
| Broche 64 | OSC1 — Oscillator crystal input |
Applications typiques
PIC18LF6490-I/PT convient pour 6 applications: Industrial Control Panels with LCD HMI, Electronic Metering (Electricity, Gas, Water), Medical Infusion Pumps and Portable Diagnostics, Point-of-Sale Terminals and Card Readers, White Goods and Home Appliance HMIs, Automotive Instrument Cluster Sub-Displays.
Industrial Control Panels with LCD HMI
The PIC18LF6490-I/PT is ideal for industrial control panels with segment LCD displays because its integrated LCD driver supports up to 48 segments with software-selectable multiplexing (Static, 1/2, 1/3, 1/4 MUX) and bias, eliminating the need for an external LCD driver IC. The 2.0 V to 5.5 V operating range lets the MCU run directly from a 24 V industrial bus stepped down to 3.3 V or 5 V. Its 16 KB Flash accommodates menu-driven state machines for parameter entry, and the 768 byte RAM is sufficient for keypad debouncing and LCD refresh buffers. The nanoWatt technology reduces idle current to microampere levels between user interactions, extending service life in always-on control cabinets.
Recommandé
Electronic Metering (Electricity, Gas, Water)
Electronic meters benefit from the PIC18LF6490-I/PT's combination of segment LCD driving and nanoWatt sleep modes. The integrated LCD controller refreshes the meter readout while the CPU core sleeps, drawing less than 5 uA total - critical for sealed battery-powered meters that must operate 10+ years on a single lithium cell. The 10-bit ADC digitizes sensor inputs (current transformers, pulse counters, flow meters) with sufficient resolution for utility-grade metering. The wide 2.0-5.5 V supply range accommodates single-cell lithium, two-AA, or 3.6 V lithium-thionyl chemistries without external boost regulators.
Recommandé
Medical Infusion Pumps and Portable Diagnostics
Portable medical devices such as infusion pumps, glucose meters, and handheld diagnostics rely on the PIC18LF6490-I/PT's low-voltage operation and integrated LCD. The MCU drives the segment display of dosing readouts directly, allowing medical engineers to implement IEC 62304-compliant firmware within 16 KB Flash. The 2.0 V minimum VDD supports direct operation from two AA alkaline cells, while the industrial temperature range (-40 C to +85 C) accommodates refrigerated pharmaceutical storage. The nanoWatt sleep mode extends battery life between treatments, and the 68 I/O pins simplify keypad, sensor, and buzzer integration.
Recommandé
Point-of-Sale Terminals and Card Readers
Point-of-sale terminals use the PIC18LF6490-I/PT as a low-power auxiliary controller for keypad scanning, LCD status indication, and secure input handling. The integrated LCD driver supports the segment displays used for amount entry and transaction status without external hardware. With 40 MHz performance, the MCU handles encrypted PIN-pad protocols, while 768 byte RAM is sufficient for transaction buffers. The 64-pin TQFP package provides ample I/O for magstripe readers, smart-card interfaces, and tamper-detection switches. The wide operating voltage range supports both battery-backed and USB-powered terminal designs.
Recommandé
White Goods and Home Appliance HMIs
Washing machines, dishwashers, ovens, and refrigerators commonly use the PIC18LF6490-I/PT to drive segment-LCD user interfaces with wash-cycle indicators and timer displays. The integrated segment LCD driver simplifies BOM by replacing dedicated LCD controller ICs, while the 16 KB Flash stores firmware for cycle programming, error diagnostics, and user-interface state machines. The 2.0-5.5 V supply range allows direct connection to rectified 5 V rails or step-down 3.3 V supplies. nanoWatt technology reduces standby power to meet EU eco-design regulations for household appliances.
Recommandé
Automotive Instrument Cluster Sub-Displays
While the -I (industrial) grade PIC18LF6490-I/PT targets non-automotive applications, its integrated segment LCD driver and nanoWatt technology suit secondary automotive displays such as HVAC control readouts, trip-computer sub-panels, and battery-management status indicators. The 40 MHz CPU processes CAN/LIN message handling alongside display refresh, and the 10-bit ADC reads temperature, voltage, and rotary encoder inputs. Designers targeting AEC-Q100 qualification should evaluate Microchip's automotive-grade PIC18F equivalents or use the industrial-grade part in non-safety-critical sub-displays with appropriate environmental sealing.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour PIC18LF6490-I/PT — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | PIC18F6490-I/PT | PIC18F8490-I/PT | PIC18LF8390-I/PT | PIC18LF6490T-I/PT | PIC18LF4480-I/PT |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 64-pin TQFP (PT) 10x10 mm | 64-pin TQFP (PT) 10x10 mm - same | 64-pin TQFP (PT) 10x10 mm - same | 64-pin TQFP (PT) 10x10 mm - same | 64-pin TQFP (PT) 10x10 mm - same | 64-pin TQFP (PT) 10x10 mm - same |
| Program Memory (Flash) | 16 KB | 16 KB | 16 KB | 16 KB | 16 KB | 16 KB |
| RAM | 768 bytes | 768 bytes | 768 bytes | 768 bytes | 768 bytes | 768 bytes |
| Operating Voltage Range | 2.0 V to 5.5 V (LF) | 4.2 V to 5.5 V | 4.2 V to 5.5 V | 2.0 V to 5.5 V | 2.0 V to 5.5 V | 2.0 V to 5.5 V |
| Integrated LCD Driver | Yes, up to 48 segments | Yes, up to 48 segments | Yes, up to 48 segments | Yes, up to 48 segments | Yes, up to 48 segments | No |
| Maximum CPU Speed | 40 MHz | 40 MHz | 40 MHz | 40 MHz | 40 MHz | 40 MHz |
| nanoWatt Power Management | Yes (LF variant) | Limited | Limited | Yes (LF) | Yes (LF) | Yes (LF) |
| I/O Pins | 68 | 68 | 68 | 68 | 68 | 68 |
| Operating Temperature | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C |
Principaux différenciateurs
- Lowest operating voltage in 6490 family (vs PIC18F6490-I/PT)
- Integrated LCD driver eliminates external IC (vs PIC18LF4480-I/PT)
- True nanoWatt sleep with LCD active (vs PIC18F8490-I/PT)
Notes de conception
Place a 0.1 uF decoupling capacitor within 5 mm of each VDD pin (the 64-pin TQFP has multiple VDD pins at 18, 36, and 63) and a single 10 uF bulk capacitor near the MCU. The PIC18LF6490's nanoWatt sleep current can drop below 1 uA with the LCD driver and peripherals disabled, so any leakage path from floating pins or insufficient bulk capacitance will dominate standby power. Estimated: at VDD=3.3V and Sleep mode with LCD off, supply current is approximately 0.1-1 uA per the datasheet DC characteristics table.
Route the LCD segment and common signals on inner PCB layers with ground shielding to minimize crosstalk into adjacent analog inputs. The integrated segment LCD driver outputs are multiplexed, so physical proximity between COM and SEG lines can cause ghost segments if traces run parallel for more than 20 mm. Keep the LCD bias network (resistor ladder or charge pump capacitors) within 10 mm of the VLCD pins to maintain display contrast across the operating temperature range.
Do not leave unused I/O pins floating - configure them as outputs or enable internal weak pull-ups to prevent parasitic current draw in sleep mode. The PIC18LF6490's nanoWatt sleep current assumes all peripherals are disabled and pins are not floating. Failure to configure unused pins can increase sleep current by 10-100x, ruining battery-life projections in metering applications. Also verify the MCLR pin has a 10 kohm pull-up to VDD; leaving MCLR floating causes erratic resets.
When using the 10-bit ADC for sensor measurements, place a 0.1 uF bypass capacitor at the VREF+ pin (RA3) and add a 100 ohm series resistor with 100 nF cap on analog input traces to form an RC anti-aliasing filter. The ADC reference stability directly affects measurement accuracy, so use a low-noise LDO or dedicated reference for VDD when measuring sub-millivolt signals. Estimated: with 10-bit resolution and 5 V VREF, the ADC quantizes to 4.88 mV per LSB - adequate for most HMI sensor readings.
Informations de conformité
RoHS and REACH compliant per Microchip product page. Industrial grade (-I suffix) only - not AEC-Q100 qualified for automotive safety-critical applications.
