PIC18F6490T-I/PT - 8-bit 40MHz 16KB Flash LCD MCU | Microchip
Teilenummer: PIC18F6490T-I/PT ✓ Aktiv| Menge | Stückpreis | Gesamt |
|---|---|---|
| 1 | $8.2 | $8,20 |
| 10 | $7.4 | $74,00 |
| 100 | $6.6 | $660,00 |
| 500 | $5.95 | $2.975,00 |
| 1.000 | $5.4 | $5.400,00 |
PIC18F6490T-I/PT Übersicht
An 8-bit microcontroller (MCU) is a microprocessor integrated with program memory (Flash/ROM), data memory (SRAM), peripherals, and I/O on a single die; it belongs to the broader microcontroller category within microcontrollers and microprocessors under semiconductor devices. PIC18F devices sit in Microchip's enhanced mid-range 8-bit family, offering a Harvard architecture, 16-bit-wide instruction word, hardware multiplier, and C-optimized instruction set that balances code density against deterministic interrupt response. The integrated segment-LCD controller makes the PIC18F6490 part of the PIC18F "LCD" subfamily specifically targeted at human-machine-interface and metering applications.
Key features include 16KB (8K x 16) self-programmable Flash, 768-byte RAM, 256-byte EEPROM, an internal LCD driver with charge pump supporting up to 48 segments, nanoWatt power management with multiple idle/sleep modes, and industrial -40C to +85C temperature operation. The 64-TQFP pinout exposes full LCD segment pins while leaving ample GPIO for buttons, sensors, and communication buses. Built-in Enhanced Flash Cell technology supports >100k erase/write cycles and >40-year data retention, valuable for firmware-upgradable metering and field-deployed devices.
Architecturally, the PIC18F6490 uses an 8-bit data path with 16-bit instructions and a hardware 8x8 multiplier that accelerates signed/unsigned multiply in 1 instruction cycle. The nanoWatt technology tier adds real-time clock/counter operation from a 32 kHz source while drawing microamp-level current, enabling multi-year battery life in utility metering and remote sensor applications. The LCD module includes a configurable charge pump, software-controlled contrast, and direct segment drive, removing external resistor ladders and driver ICs from segment-LCD designs.
Typical applications include handheld utility meters (electric/gas/water), thermostats and HVAC controllers, home-security keypads and alarm panels, medical infusion pumps and glucose meters, point-of-sale terminals, and industrial control panels with segment-LCD readouts. The combination of on-chip LCD + nanoWatt + industrial temperature range is purpose-built for metering and panel-instrument designs where BOM cost and battery life dominate.
When designing with this device, allocate sufficient PCB area for the LCD bias network and consider using the internal charge pump when the supply drops below 3V to maintain segment contrast. Always populate the decoupling capacitors specified in the manufacturer datasheet typical-application section, and follow Microchip's recommended in-circuit serial programming (ICSP) layout for production-line firmware updates.
Drop-in-Alternativen für PIC18F6490T-I/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 PIC18F6490T-I/PT (gleiche Bauform und Footprint) – abweichend in Package, I/O Pins, Operating Temperature, Core Architecture, ADC.
Schnellvergleichstool – Wählen Sie Alternativbauteile für den Direktvergleich:
PIC18F6490-I/PT
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
PIC18F8410-I/PT
✅ Drop-In✓ Auf Lager
$6.85 / Stück
Datenblatt ansehen →PIC18F8490-I/PT
✅ Drop-In✓ Auf Lager
$5.55 / Stück
Datenblatt ansehen →PIC18LF6490T-I/PT
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
PIC18F8490T-I/PT
✅ Drop-In✓ Auf Lager
$6.05 / Stück
Datenblatt ansehen →PIC18F6410-I/PT
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
PIC18F6490T-I/PT Grenzwerte & elektrische Eigenschaften
| Core Architecture | PIC 8-bit (Enhanced Mid-range) |
| Family | PIC18F LCD series |
| Program Memory (Flash) | 16 KB (8K x 16) |
| Data Memory (SRAM) | 768 bytes |
| EEPROM | 256 bytes |
| Maximum CPU Clock | 40 MHz |
| Supply Voltage (VDD) | 4.2 V to 5.5 V |
| I/O Pins | 54 |
| LCD Segments | Up to 48 segments with on-chip charge pump |
| ADC | 10-bit, multi-channel |
| Communication | EUSART, SPI, I2C (MSSP) |
| Timers | Multiple 8-bit and 16-bit timers |
| Gehäuse | 64-pin TQFP (10x10 mm), 1.0 mm height, plastic MS-026 |
| Betriebstemperatur | -40 C to +85 C (Industrial) |
| Montageart | Surface Mount (Gull Wing) |
| Power-Saving Modes | nanoWatt technology (Idle, Sleep, RTCC) |
| RoHS-Status | Compliant |
| Lifecycle Stage | Active |
PIC18F6490T-I/PT Pin-Konfiguration
| Pin 1 | SEG0 — LCD segment 0 / RA0 digital I/O |
| Pin 2 | SEG1 — LCD segment 1 / RA1 digital I/O |
| Pin 3 | SEG2 — LCD segment 2 / RA2 digital I/O |
| Pin 4 | SEG3 — LCD segment 3 / RA3 digital I/O |
| Pin 5 | SEG4 — LCD segment 4 / RA4 digital I/O |
| Pin 6 | SEG5 — LCD segment 5 / RA5 digital I/O |
| Pin 7 | SEG6 — LCD segment 6 / RA6 digital I/O |
| Pin 8 | SEG7 — LCD segment 7 / RA7 digital I/O |
| Pin 9 | SEG8 — LCD segment 8 / RA7 digital I/O |
| Pin 10 | VDD — Positive supply voltage (4.2V to 5.5V) |
| Pin 11 | VSS — Ground reference |
| Pin 12 | OSC1 — External clock/oscillator input |
| Pin 13 | OSC2 — External clock/oscillator output |
| Pin 14 | MCLR — Master clear reset input (active-low) |
| Pin 15 | LCDBIAS0 — LCD bias voltage node 0 |
| Pin 16 | LCDBIAS1 — LCD bias voltage node 1 |
| Pin 17 | LCDBIAS2 — LCD bias voltage node 2 |
| Pin 18 | LCDBIAS3 — LCD bias voltage node 3 |
| Pin 19 | VLCD — LCD supply voltage input |
| Pin 20 | C1+ — Charge-pump flying capacitor positive |
| Pin 21 | C1- — Charge-pump flying capacitor negative |
| Pin 22 | C2+ — Charge-pump flying capacitor positive |
| Pin 23 | C2- — Charge-pump flying capacitor negative |
| Pin 24 | AN0 — Analog input 0 / digital I/O |
| Pin 25 | AN1 — Analog input 1 / digital I/O |
| Pin 26 | AN2 — Analog input 2 / digital I/O |
| Pin 27 | AN3 — Analog input 3 / digital I/O |
| Pin 28 | AN4 — Analog input 4 / digital I/O |
| Pin 29 | AN5 — Analog input 5 / digital I/O |
| Pin 30 | AN6 — Analog input 6 / digital I/O |
| Pin 31 | AN7 — Analog input 7 / digital I/O |
| Pin 32 | AN8 — Analog input 8 / digital I/O |
| Pin 33 | AN9 — Analog input 9 / digital I/O |
| Pin 34 | AN10 — Analog input 10 / digital I/O |
| Pin 35 | AN11 — Analog input 11 / digital I/O |
| Pin 36 | VDD — Positive supply voltage |
| Pin 37 | VSS — Ground reference |
| Pin 38 | PGC — In-circuit debugger clock (ICSP) |
| Pin 39 | PGD — In-circuit debugger data (ICSP) |
| Pin 40 | RB0 — PORTB bit 0 (digital I/O, INT0) |
| Pin 41 | RB1 — PORTB bit 1 (digital I/O, INT1) |
| Pin 42 | RB2 — PORTB bit 2 (digital I/O) |
| Pin 43 | RB3 — PORTB bit 3 (digital I/O) |
| Pin 44 | RB4 — PORTB bit 4 (digital I/O) |
| Pin 45 | RB5 — PORTB bit 5 (digital I/O, PG-IOC) |
| Pin 46 | RB6 — PORTB bit 6 (digital I/O, PGC) |
| Pin 47 | RB7 — PORTB bit 7 (digital I/O, PGD) |
| Pin 48 | RC0 — PORTC bit 0 (digital I/O) |
| Pin 49 | RC1 — PORTC bit 1 (digital I/O, T1OSI) |
| Pin 50 | RC2 — PORTC bit 2 (digital I/O, CCP1) |
| Pin 51 | RC3 — PORTC bit 3 (digital I/O, SCL) |
| Pin 52 | RC4 — PORTC bit 4 (digital I/O, SDA) |
| Pin 53 | RC5 — PORTC bit 5 (digital I/O, SDO) |
| Pin 54 | RC6 — PORTC bit 6 (digital I/O, TX) |
| Pin 55 | RC7 — PORTC bit 7 (digital I/O, RX) |
| Pin 56 | RD0 — PORTD bit 0 (digital I/O) |
| Pin 57 | RD1 — PORTD bit 1 (digital I/O) |
| Pin 58 | RD2 — PORTD bit 2 (digital I/O) |
| Pin 59 | RD3 — PORTD bit 3 (digital I/O) |
| Pin 60 | RD4 — PORTD bit 4 (digital I/O) |
| Pin 61 | RD5 — PORTD bit 5 (digital I/O, P1B) |
| Pin 62 | RD6 — PORTD bit 6 (digital I/O, P1C) |
| Pin 63 | RD7 — PORTD bit 7 (digital I/O, P1D) |
| Pin 64 | RE0 — PORTE bit 0 (digital I/O) |
Typische Anwendungen
PIC18F6490T-I/PT ist geeignet für 6 Anwendungs: Handheld Electric/Gas/Water Utility Meters, Thermostats and HVAC Controllers, Home-Security Keypads and Alarm Panels, Medical Infusion Pumps and Glucose Meters, Point-of-Sale Terminals and Card Readers, Industrial Control Panels with Segment-LCD Readout.
Handheld Electric/Gas/Water Utility Meters
The PIC18F6490T-I/PT is purpose-built for battery-powered utility meters thanks to its integrated segment-LCD driver with charge pump, 16 KB self-programmable Flash for metrology firmware, 256-byte EEPROM for tariff/log storage, and nanoWatt sleep modes that drop quiescent current to the microamp range from a 32 kHz time base. The 54 GPIO and 10-bit ADC easily handle pulse counting from mechanical or Hall-effect flow sensors, optical tamper detection, and keypad entry. The on-chip LCD removes the external HT1621-class driver IC that competing designs still require, reducing BOM cost by roughly $0.30-$0.50 per meter. Pin-compatible migration to PIC18LF6490T-I/PT enables 2.0 V operation for lithium-thionyl-chloride primary cells rated for 10+ year field life.
Empfohlen
Thermostats and HVAC Controllers
The PIC18F6490T-I/PT fits wall-mount thermostats where a 7-segment-style LCD shows temperature setpoint and system status. The internal LCD charge pump maintains contrast down to 2 V, so the design runs directly from 2x AA cells without a boost converter. Five timers handle triac zero-crossing for AC load control, the 10-bit ADC reads NTC thermistors, and the EUSART plus I2C support Wi-Fi or sub-GHz module add-on for smart-thermostat variants. The -40C to +85C industrial temperature grade covers unheated equipment rooms and outdoor installations. Compared with PIC16F designs, the PIC18F6490 adds C-compiler efficiency and an 8x8 hardware multiplier, which speeds floating-point conversion of NTC resistance to temperature.
Empfohlen
Home-Security Keypads and Alarm Panels
The PIC18F6490T-I/PT powers wall-mounted security keypads with a 16x2 or 4x20 segment-LCD showing zone status and a 4x4 matrix-scanned keypad. The 54 GPIO drive keypad scanning, LED status indicators, piezo buzzer PWM, and the encrypted bus to the main alarm panel. The 16 KB Flash accommodates custom zone-naming strings and small custom fonts, while 256-byte EEPROM stores installer configuration. The integrated LCD charge pump maintains readable contrast across battery backup when mains power drops. The PIC18F6490T-I/PT's enhanced 16-bit instruction set runs AES-128 keypad-to-panel encryption at acceptable speed without offloading to a coprocessor.
Empfohlen
Medical Infusion Pumps and Glucose Meters
The PIC18F6490T-I/PT fits portable medical devices such as insulin pumps and blood-glucose meters that require a small monochrome segment LCD, low power consumption, and reliable industrial-temperature operation. The on-chip LCD driver displays glucose readings, battery status, and time/date without external bias resistors. The 10-bit ADC reads the electrochemically-amplified glucose test strip with adequate resolution for clinical use. nanoWatt sleep modes extend battery life between daily tests, and the 256-byte EEPROM stores up to 100 measurement history records with timestamps. The integrated watchdog timer and BOR circuit support IEC 60730 Class B functional-safety requirements when paired with a proper firmware self-test library.
Empfohlen
Point-of-Sale Terminals and Card Readers
The PIC18F6490T-I/PT drives small point-of-sale (POS) terminals with a 2-line by 16-character segment-LCD showing transaction amount and PIN-prompt status. The 54 GPIO handle the 4x4 PIN-pad matrix, EMV smartcard contacts via external TDA8026, magnetic-stripe reader via SPI, and a piezo buzzer for keystroke feedback. The 16 KB Flash runs the EMV kernel stack and the 768-byte SRAM handles PIN-block assembly before encryption. The integrated segment LCD removes the typical $0.40 external HT1621 cost. The -40C to +85C industrial range and IEC 61000-4-2 ESD immunity allow the terminal to survive retail-floor handling without additional protection.
Empfohlen
Industrial Control Panels with Segment-LCD Readout
The PIC18F6490T-I/PT serves factory-floor HMI panels where a small segment-LCD displays motor speed, temperature setpoint, or fault code. The 40 MHz core executes PID loops on a 1 ms cycle while the EUSART streams Modbus-RTU commands to a master PLC. The on-chip LCD shows operating status without an external display driver, and the 10-bit ADC reads 4-20 mA loop-powered sensor inputs directly. Industrial -40C to +85C operation and >100k Flash erase cycles make the device suitable for field-reprogrammable machinery. The 64-TQFP (10x10 mm) package fits a 1.6 mm PCB, enabling compact IP65-sealed control enclosures.
Empfohlen
Zusammenfassung der empfohlenen Produkte
Technische Referenzdaten für PIC18F6490T-I/PT – Vergleich, Designhinweise und Compliance-Informationen.
Auswahlhilfe
Vergleich mit Alternativen
| Parameter | Dieses Produkt | PIC18F6490-I/PT | PIC18F8410-I/PT | PIC18F8490-I/PT | PIC18LF6490T-I/PT | PIC18F6410-I/PT |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | TQFP-64 (10x10 mm) | TQFP-64 (10x10 mm) - same | TQFP-64 (10x10 mm) - same | TQFP-64 (10x10 mm) - same | TQFP-64 (10x10 mm) - same | TQFP-64 (10x10 mm) - same |
| CPU Clock | 40 MHz | 40 MHz (identical) | 40 MHz | 40 MHz | 40 MHz (identical) | 40 MHz |
| Supply Voltage | 4.2 V to 5.5 V | 4.2 V to 5.5 V (identical) | 4.2 V to 5.5 V | 4.2 V to 5.5 V | 2.0 V to 5.5 V (wider range) | 4.2 V to 5.5 V |
| Integrated LCD Driver | Yes (up to 48 segments + charge pump) | Yes (identical) | Yes (same family) | Yes (same family) | Yes (identical) | Yes (same family) |
| Operating Temperature | -40 C to +85 C (Industrial) | -40 C to +85 C (identical) | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C (identical) | -40 C to +85 C |
| RoHS Compliance | Yes (Pb-free) | Yes | Yes | Yes | Yes | Yes |
Wichtigste Unterscheidungsmerkmale
- Integrated segment-LCD driver with charge pump on the same die (vs. PIC18F46K22-I/P)
- Tape-and-reel factory packaging for high-volume SMT (vs. PIC18F6490-I/PT)
- Industrial -40C to +85C operating range (vs. PIC18F6490-E/PT)
- nanoWatt power-management tier with RTCC (vs. PIC18F6490T-E/PT)
Designhinweise
Decouple every VDD/VSS pair with a 100 nF X7R ceramic placed within 3 mm of the IC pin; add a single 10 uF bulk capacitor near the VDD rail entry. For battery-powered designs that rely on the internal LCD charge pump, ensure the VLCD pin has a 1 uF bypass capacitor (per the manufacturer datasheet typical-application circuit) and that the pump is enabled only after the MCU enters Run mode to avoid inrush current dips. In nanoWatt Sleep mode, configure the MCLR pin with the internal weak pull-up enabled to prevent spurious wake events; this typically saves 5-10 uA of quiescent current in metering applications.
Route the ICSP signals (PGC/PGD/MCLR/VPP) to a 6-pin header with 100 mil pitch, keeping the trace length below 50 mm to avoid programming failures. Place the 32.768 kHz crystal (if used for RTCC) within 5 mm of OSC1/OSC2 and guard it with a ground ring to minimize coupling from switching traces. The 64-TQFP (10x10 mm) package has a 0.5 mm lead pitch - follow JEDEC IPC-7351 land pattern recommendations and use NSMD pads for reliable lead-free reflow. Expose a copper pour under the IC tied to VSS for thermal spreading, although at 40 MHz / 3.3 V the dissipation stays well below 100 mW.
The "T" suffix indicates tape-and-reel packaging only - do not confuse it with a temperature grade marker (the industrial -40C to +85C range is denoted by the "I" between the part number and the package code). When migrating to the PIC18LF6490T-I/PT for 2.0 V operation, verify the analog peripheral specifications: the ADC reference range scales with VDD and the brown-out reset thresholds must be reconfigured via CONFIG registers. A frequent failure mode is leaving the LCD charge pump enabled while the MCU is in Sleep, which can draw 50-100 uA and defeat the purpose of nanoWatt operation; disable the LCD module in the firmware before entering Sleep unless the display must remain visible.
Although the 40 MHz core is moderate-speed, the MSSP peripheral driving I2C/SPI to external sensors can generate fast edges; place 33 ohm series resistors on SCL/SDA/MOSI/MISO lines when bus length exceeds 50 mm. The 10-bit ADC inputs are not 5V-tolerant on 5V VDD designs when the corresponding digital I/O is configured as output; use ANx pins only as analog inputs or configure them as digital outputs with care to avoid ADC channel crosstalk. For metrology designs, average 16-64 ADC samples in firmware to improve effective resolution by 1-2 bits without external filtering.
Compliance-Informationen
RoHS and REACH compliant per Microchip product page and Abacus Technologies cross-reference listing. Industrial temperature grade -40C to +85C; not AEC-Q100 qualified (this is a general-purpose MCU, not automotive). Lead-free reflow profile to 260 C peak per JEDEC J-STD-020.
