PIC18LF1220T-I/ML - 8-Bit 40MHz 4KB Flash MCU | Microchip
Référence : PIC18LF1220T-I/ML ✓ Actif| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $2.4 | $2,40 |
| 10 | $2.16 | $21,60 |
| 100 | $1.92 | $192,00 |
| 500 | $1.71 | $855,00 |
| 1 000 | $1.52 | $1 520,00 |
PIC18LF1220T-I/ML Présentation
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory, data memory, and programmable peripherals. The PIC18F architecture is an 8-bit enhanced Harvard RISC family from Microchip featuring 200 ns instruction execution at 40 MHz, 16-bit instructions, a hardware multiplier, and a rich peripheral set. Within the broader taxonomy, the PIC18F sits in the hierarchy MCU -> 8-bit microcontroller -> embedded controller -> semiconductor. The 'LF' prefix denotes the low-voltage PIC18 family variant, supporting operation down to 2.0 V, while the '1220' sub-family provides 4 KB Flash in the entry-level PIC18 lineup.
Key features of the PIC18LF1220T-I/ML include 4 KB of self-programmable Flash, 256 bytes of SRAM, hardware USART, MSSP (SPI/I2C), a 10-bit ADC with up to 7 channels, nanoWatt Technology for ultra-low-power sleep, and an industrial temperature grade of -40C to +85C. The 28-QFN package integrates an exposed thermal pad that simultaneously serves as the package ground and a heat-spreading path, enabling compact PCB designs with strong thermal dissipation for the LF voltage range.
The PIC18LF1220T-I/ML uses Microchip's enhanced Harvard RISC architecture with separate code and data buses, a 16-bit instruction word, and 32-level hardware stack. Its nanoWatt technology combines multiple idle/sleep states, oscillator switching, and peripheral disabling to achieve quiescent currents under 1 uA in deep sleep, making it well-suited for battery-powered systems that wake periodically to perform short sensor-acquisition or communication tasks.
Typical applications include low-power IoT sensor nodes, battery-operated industrial sensors, consumer remote controls, HVAC thermostats, white goods and appliance controls, and portable medical accessories. The wide 2.0-5.5 V supply range simplifies designs powered from single-cell Li-ion (3.7 V nominal), two-cell alkaline (3 V), or regulated 5 V rails, and the integrated 10-bit ADC eases analog-sensor interfacing without external converters.
Designers should budget flash and RAM size for 4 KB / 256 bytes, leverage the QFN exposed pad as the main ground return, place a 100 nF decoupling capacitor within 2 mm of VDD, and use MPLAB X IDE + XC8 compiler for code development. Programming is supported via ICSP (In-Circuit Serial Programming) using PGD/PGC lines. The 'T' suffix indicates tape-and-reel packaging, while 'I' indicates the industrial -40C to +85C operating temperature grade.
This page synthesizes distributor pricing, drop-in same-family alternatives, and practical design notes beyond the manufacturer datasheet summary, providing trade-off context for engineers evaluating the PIC18LF1220T-I/ML against PIC18F1220 and PIC18LF1320 alternatives.
Alternatives de remplacement direct pour PIC18LF1220T-I/ML — 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 PIC18LF1220T-I/ML (même facteur de forme et même empreinte) — différant par Operating Temperature, Core Architecture, Operating Voltage Range, Package, ADC.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
PIC18LF1220T-I/SS
✅ Remplacement direct✓ En stock
$2.18 / unité
Voir la fiche technique →PIC18LF1220T-I/SO
✅ Remplacement direct✓ En stock
$1.38 / unité
Voir la fiche technique →PIC18LF1220T-I/SP
✅ Remplacement direct ⚠️ Spécifications non vérifiées📋 Alternative de référence (hors catalogue)
PIC18LF1220-I/ML
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
PIC18LF1320T-I/ML
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
PIC18LF1220T-I/ML Valeurs maximales et caractéristiques électriques
| Core Architecture | PIC18F 8-bit enhanced RISC Harvard |
| Maximum CPU Frequency | 40 MHz |
| Instruction Cycle Time | 200 ns at 40 MHz |
| Program Memory (Flash) | 4 KB (2K x 16 instructions) |
| Data Memory (SRAM) | 256 bytes |
| I/O Pins | 16 |
| Operating Voltage Range | 2.0 V to 5.5 V (LF: 2.5/3.3/5 V) |
| Communication | 1x USART (EUSART), 1x MSSP (SPI / I2C) |
| Température de fonctionnement | -40C to +85C (Industrial, 'I') |
| Boîtier | 28-QFN 6x6 mm with exposed pad (ML) |
| Packaging Form | Tape & Reel ('T' suffix) |
| Type de montage | Surface Mount |
| Statut RoHS | Compliant |
| Low-Power Features | nanoWatt Technology (idle/sleep, oscillator switching) |
| Programming Interface | ICSP (In-Circuit Serial Programming) |
Configuration des broches de PIC18LF1220T-I/ML
| Broche 1 | MCLR/VPP/AN0 — Master Clear (reset) input / ICSP programming voltage / analog input 0 |
| Broche 2 | RA0/AN0 — Digital I/O / analog input 0 (note: pin 1 is MCLR/VPP; pin 2 is RA0) |
| Broche 3 | RA1/AN1 — Digital I/O / analog input 1 |
| Broche 4 | RA2/AN2/VREF- — Digital I/O / analog input 2 / ADC negative reference |
| Broche 5 | RA3/AN3/VREF+ — Digital I/O / analog input 3 / ADC positive reference |
| Broche 6 | RA4/T0CKI — Digital I/O / Timer0 clock input |
| Broche 7 | RA5/AN4/SS — Digital I/O / analog input 4 / SPI slave select |
| Broche 8 | VSS — Ground reference |
| Broche 9 | OSC1/RA7/CLKI — Oscillator input / digital I/O / external clock input |
| Broche 10 | OSC2/RA6/CLKO — Oscillator output / digital I/O / clock output |
| Broche 11 | RC0/T1OSO/T13CKI — Digital I/O / Timer1 oscillator output / Timer1/Timer3 clock input |
| Broche 12 | RC1/T1OSI/CCP2 — Digital I/O / Timer1 oscillator input / CCP2 output |
| Broche 13 | RC2/CCP1 — Digital I/O / CCP1 output |
| Broche 14 | RC3/SCK/SCL — Digital I/O / SPI clock / I2C clock |
| Broche 15 | RC4/SDI/SDA — Digital I/O / SPI data in / I2C data |
| Broche 16 | RC5/SDO — Digital I/O / SPI data out |
| Broche 17 | RC6/TX/CK — Digital I/O / EUSART TX / clock |
| Broche 18 | RC7/RX/DT — Digital I/O / EUSART RX / data |
| Broche 19 | VSS — Ground reference |
| Broche 20 | VDD — Positive supply voltage (2.0-5.5 V) |
| Broche 21 | RB0/INT0/AN12 — Digital I/O / external interrupt 0 / analog input 12 |
| Broche 22 | RB1/INT1/AN10 — Digital I/O / external interrupt 1 / analog input 10 |
| Broche 23 | RB2/INT2/AN8 — Digital I/O / external interrupt 2 / analog input 8 |
| Broche 24 | RB3/AN9/CCP2 — Digital I/O / analog input 9 / CCP2 output (alt) |
| Broche 25 | RB4/AN11 — Digital I/O / analog input 11 |
| Broche 26 | RB5/PGM/AN13 — Digital I/O / LVP programming / analog input 13 |
| Broche 27 | RB6/PGC — Digital I/O / ICSP clock |
| Broche 28 | RB7/PGD — Digital I/O / ICSP data |
| Broche 29 | EP — Exposed thermal pad - tie to VSS (ground) for thermal dissipation |
Applications typiques
PIC18LF1220T-I/ML convient pour 7 applications: Battery-Powered IoT Sensor Node, Consumer Remote Control, HVAC Thermostat Controller, White Goods Appliance Control, Portable Medical Accessory, Industrial Sensor Transmitter, LED Lighting Controller.
Battery-Powered IoT Sensor Node
The PIC18LF1220T-I/ML is a strong fit for battery-powered IoT sensor nodes because its LF (low-voltage) family extends operation down to 2.0 V, allowing deeper discharge of single-cell Li-ion (3.7 V nominal) and 2x alkaline (3 V) batteries. The 4 KB Flash and 256 B SRAM handle small firmware workloads such as periodic sensor sampling, threshold logic, and LoRa/Sigfox TX buffers, while nanoWatt Technology drops quiescent current under 1 uA in deep sleep. Placed between the battery and a sensor front-end (e.g., temperature/humidity), it wakes via watchdog or external interrupt, takes a 10-bit ADC reading, transmits, and sleeps. Compared to a PIC18F1220, the LF variant is the right choice when the rail sags below 4.2 V.
Recommandé
Consumer Remote Control
The PIC18LF1220T-I/ML suits IR/RF consumer remote controls where 4 KB Flash holds button-scan tables, IR protocol state machines (RC5, NEC, SIRC), and pairing logic, while 256 B SRAM buffers TX frames. Its 16 GPIO drive an 8x8 keypad matrix or capacitive touch buttons, and the EUSART interfaces to RF transmitters (e.g., sub-GHz OOK/FSK modules). Operating from 2-3 V coin-cell or 2x AAA, the LF family's wide VDD envelope maximizes battery life. The 28-QFN 6x6 mm footprint fits inside slim remote enclosures. Designers can reuse firmware across the PIC18LF1220T-I/SS (28-SSOP) for higher-volume reflow lines without code changes.
Recommandé
HVAC Thermostat Controller
The PIC18LF1220T-I/ML can serve as the user-interface and control MCU in residential HVAC thermostats where the 10-bit ADC reads temperature sensors (NTC or analog temp IC), the EUSART talks to a Wi-Fi module (e.g., ESP8266 via UART), and 16 GPIO drive LCD segments, buttons, and relay drivers for HVAC mode control. The 4 KB Flash holds scheduling logic and PID loops for simple on/off control. Operating from a 24 VAC transformer + rectifier + 3.3 V LDO, the LF variant's 2.0-5.5 V VDD tolerance allows direct regulation. Its industrial -40C to +85C temperature rating handles thermostat enclosure thermal stress.
Recommandé
White Goods Appliance Control
The PIC18LF1220T-I/ML fits white-goods control boards (washing machines, dishwashers, microwave ovens) where 4 KB Flash holds state-machine logic for cycles, 256 B SRAM tracks countdown variables, and the 10-bit ADC monitors motor current/voltage feedback via shunt. The 28-QFN exposed pad acts as ground return and heat-spreader, critical in appliance underhood thermal environments. The industrial -40C to +85C rating covers appliance operation. nanoWatt low-power modes drop standby consumption to meet energy-star standby budgets (<0.5 W) when the appliance is idle but plugged in.
Recommandé
Portable Medical Accessory
The PIC18LF1220T-I/ML supports portable medical accessories (e.g., pill dispensers, portable pulse-oximeter interfaces, Bluetooth bridges) where its LF voltage envelope allows 2x alkaline or single-cell Li-ion battery operation, 4 KB Flash holds simple dosing/event logic, and the EUSART links to a Bluetooth HC-05/HC-06 module or BLE SoC for smartphone pairing. The 10-bit ADC reads battery voltage for accurate fuel-gauging, supporting safer medical-device operation. Designers must validate the medical device's full regulatory path (FDA 510(k) Class I/II) - this part is not AEC-Q100 qualified and is not suited for automotive safety-critical paths.
Recommandé
Industrial Sensor Transmitter
The PIC18LF1220T-I/ML is a fit for industrial 4-20 mA loop-powered sensor transmitters, where its 2.0-5.5 V LF envelope operates directly from the 4 mA loop voltage after a regulator, and the 10-bit ADC digitizes a bridge sensor (pressure, strain gauge) signal conditioned by an external op-amp. The 4 KB Flash holds calibration coefficients, linearization, and HART or IO-Link lite protocol state machines. The industrial -40C to +85C rating meets factory-floor temperature requirements. Its nanoWatt Technology drops quiescent current so the entire transmitter stays within the 4 mA loop budget, preserving measurement accuracy.
Recommandé
LED Lighting Controller
The PIC18LF1220T-I/ML controls entry-level LED drivers and decorative lighting controllers where the 10-bit ADC reads ambient light sensors or potentiometers for dimming, and 16 GPIO drive MOSFET gates (via gate drivers) for LED strings. The 4 KB Flash holds dimming curves, color-mixing tables for RGB, and standby/eco modes, while nanoWatt Technology keeps standby consumption low. The LF variant supports direct operation from 2-3 alkaline cells in portable LED fixtures. The 28-QFN exposed pad provides solid thermal dissipation for moderate-load applications.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour PIC18LF1220T-I/ML — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | PIC18LF1220T-I/SS | PIC18LF1220T-I/SO | PIC18LF1220-I/ML | PIC18LF1320T-I/ML |
|---|---|---|---|---|---|
| Package | 28-QFN 6x6 mm (ML) | 28-SSOP (different PCB footprint) | 28-SOIC wide (different PCB footprint) | 28-QFN ML (same footprint, tube packaging) | 28-QFN ML (same footprint, larger Flash) |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Flash | 4 KB (2K x 16) | 4 KB | 4 KB | 4 KB | 8 KB (+100%) |
| Data SRAM | 256 bytes | 256 B | 256 B | 256 B | 256 B |
| Operating Voltage | 2.0 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 | 2.0 V to 5.5 V |
| I/O Pins | 16 | 16 | 16 | 16 | 16 |
| CPU Frequency | 40 MHz | 40 MHz | 40 MHz | 40 MHz | 40 MHz |
| Packaging | Tape & Reel | Tape & Reel | Tape & Reel | Tube | Tape & Reel |
| Temperature Grade | Industrial -40C to +85C | Industrial -40C to +85C | Industrial -40C to +85C | Industrial -40C to +85C | Industrial -40C to +85C |
Principaux différenciateurs
- Wide 2.0-5.5 V low-voltage operation (vs PIC18F1220T-I/ML)
- Largest Flash in 28-QFN LF family at lowest cost point (vs PIC18LF1220T-I/SS)
- Direct Flash-upgrade path on the same 28-QFN footprint (vs PIC18LF1220T-I/ML)
Notes de conception
Decoupling: place a 100 nF ceramic capacitor (X7R, 10 V or higher rating) within 2 mm of the VDD pin (pin 20) and tie its ground lead directly to the QFN exposed pad (pin 29). Add a bulk 10 uF capacitor on the VDD rail within 10 mm to handle switching transients from peripherals like EUSART-driven RF modules. The exposed pad is the primary ground return; do not skip stitching the EP to the ground plane with at least 9 thermal vias in a 3x3 array for adequate thermal performance at 40 MHz operation.
Configuration word and ICSP: the PIC18LF1220T-I/ML is programmed via ICSP on PGC (RB6) and PGD (RB7), which doubles as GPIO. If your application uses RB6/RB7 as outputs, add 4.7 kohm pull-downs on PGC/PGD to allow in-circuit programming without contention. Do not leave the MCLR pin floating - tie it to VDD through a 10 kohm pull-up with a 100 nF cap to ground for noise immunity; floating MCLR is a leading cause of spurious resets in industrial environments.
Estimated power and thermal: at 40 MHz, 3.3 V VDD, all peripherals active, the PIC18LF1220 draws approximately 11 mA active (typical) and under 1 uA in sleep. Power dissipation is roughly 36 mW active and 3.3 uW sleep - well within the 28-QFN's thermal envelope. The 28-QFN with a properly stitched EP delivers theta_JA around 30-35 C/W on a 2-layer 1-oz board, so a 50 C ambient rise yields only 1.8 C junction rise. No external heatsink is required for the part itself, but the EP MUST be soldered to a ground plane for this thermal performance.
QFN land pattern and soldering: the 28-QFN 6x6 mm land pattern follows JEDEC HVQCCN (also called QFN-28 MLF) with a 0.5 mm pitch and a 4.1 mm x 4.1 mm center EP pad. Use NSMD (non-solder mask defined) pads with a 0.2-0.3 mm solder mask expansion to improve solder joint reliability. For hand prototyping or low-volume, use a hot plate or hot air; standard 260 C reflow per JEDEC J-STD-020 is supported (MSL3). Inspect the EP solder joint with X-ray or cross-section in high-reliability builds because a poorly wetted EP is the most common QFN reliability failure mode.
Informations de conformité
RoHS and REACH compliant per Microchip product page; not AEC-Q100 qualified (industrial grade only, not automotive). PIC18LF family parts do not include 'Q' or 'Q1' suffixes - automotive users should select PIC18F variants with /VAO suffixes or PIC18FxxQxx families.
