PIC18LF2220-I/SO - 8-Bit 40MHz MCU, 4KB Flash | Microchip
MPN: PIC18LF2220-I/SO ✓ सक्रियPIC18LF2220-I/SO अवलोकन
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, non-volatile program memory (Flash/ROM), volatile data memory (SRAM), digital I/O, and a rich set of on-chip peripherals such as timers, ADC, UART, and I2C/SPI. Within the broader semiconductor taxonomy, MCUs sit under microcontrollers -> embedded processors -> digital ICs. The PIC18 family is Microchip's high-performance 8-bit architecture, balancing deterministic interrupt latency with C-friendly instruction set, and has been a workhorse for cost-sensitive embedded products for over two decades.
Key features of the PIC18LF2220 include its 10-bit ADC (up to 10 channels), nanoWatt power management for sleep currents down to nanoampere levels, an enhanced 16-bit instruction set with 8-bit data path, and integrated EEPROM emulation. It supports In-Circuit Serial Programming (ICSP) and In-Circuit Debug (ICD), which is critical for engineers prototyping on prototype boards. The LF suffix indicates low-voltage operation; the non-LF PIC18F2220 is the 4.5 V-5.5 V variant.
Typical use cases include low-power sensor nodes, consumer appliance controllers, white-goods motor control, USB-to-UART bridges (when paired with an external PHY), and battery-powered handheld instruments. The wide 2.0 V-5.5 V range also makes it suitable for 2xAA/3xAA battery stacks and energy-harvesting front-ends.
Designers should pay attention to the 28-pin SOIC footprint selection - the I/SO suffix denotes industrial temperature grade (-40C to +85C) and SOIC package. Stack height and land pattern follow JEDEC SO-28W standards, making PCB layout straightforward.
This page synthesizes cross-distributor pricing, drop-in same-package alternatives, and design notes not aggregated on a single manufacturer or distributor page, providing an at-a-glance comparison for sourcing engineers.
के लिए ड्रॉप-इन विकल्प PIC18LF2220-I/SO — समान पैकेज, पिन-टू-पिन संगत। PCB रीवर्क आवश्यक करने वाले भिन्न-पैकेज पार्ट्स शामिल नहीं हैं।
इस सीरीज़ के वेरिएंट
समान श्रृंखला के मॉडल जो ड्रॉप-इन संगत हैं PIC18LF2220-I/SO (समान फॉर्म फैक्टर और फुटप्रिंट) — इसमें भिन्न Package, Communication, Core Architecture, ADC, Timers.
PIC18LF2221-I/SO
✅ ड्रॉप-इन📋 संदर्भ विकल्प (कैटलॉग में नहीं)
PIC18LF2220T-I/SO
✅ ड्रॉप-इन📋 संदर्भ विकल्प (कैटलॉग में नहीं)
PIC18LF2320-I/SO
✅ ड्रॉप-इनकीमत के लिए संपर्क करें
डेटाशीट देखें →PIC18F2220-I/SO
✅ ड्रॉप-इनकीमत के लिए संपर्क करें
डेटाशीट देखें →PIC18F2221-I/SO
✅ ड्रॉप-इन📋 संदर्भ विकल्प (कैटलॉग में नहीं)
PIC18LF14K22-I/SO
✅ ड्रॉप-इनकीमत के लिए संपर्क करें
डेटाशीट देखें →PIC18LF2220-I/SO Maximum Ratings और Electrical Characteristics
| Core Architecture | PIC18 (8-bit RISC, enhanced) |
| CPU Speed | 40 MHz (10 MIPS) |
| Program Memory | 4 KB Flash (2K x 16) |
| Data SRAM | 512 bytes |
| Data EEPROM | 256 bytes (emulated) |
| Digital I/O Pins | 25 |
| ADC | 10-bit, up to 10 channels |
| Supply Voltage Range | 2.0 V to 5.5 V (LF series) |
| ऑपरेटिंग तापमान | -40C to +85C (Industrial) |
| पैकेज | 28-SOIC (SO, 7.50 mm body) |
| माउंटिंग प्रकार | Surface Mount |
| Timers | 4 (Timer0/1/2/3) |
| Communication | UART, I2C (MSSP), SPI (MSSP) |
| Power-Saving Modes | nanoWatt Technology (Sleep, Idle, RC Run) |
| Programming/Debug | ICSP (In-Circuit Serial Programming) + ICD |
| RoHS स्थिति | Compliant |
PIC18LF2220-I/SO पिन कॉन्फ़िगरेशन
| पिन 1 | MCLR/Vpp — Master Clear (Reset) input / programming voltage |
| पिन 2 | RA0/AN0 — Digital I/O / Analog input channel 0 |
| पिन 3 | RA1/AN1 — Digital I/O / Analog input channel 1 |
| पिन 4 | RA2/AN2 — Digital I/O / Analog input channel 2 |
| पिन 5 | RA3/AN3/Vref+ — Digital I/O / Analog input / ADC positive reference |
| पिन 6 | RA4/T0CKI — Digital I/O / Timer0 clock input |
| पिन 7 | RA5/SS/AN4 — Digital I/O / SPI Slave Select / Analog input |
| पिन 8 | Vss — Ground reference |
| पिन 9 | OSC1/CLKI/RA7 — Oscillator crystal input / external clock |
| पिन 10 | OSC2/CLKO/RA6 — Oscillator crystal output / clock output |
| पिन 11 | RC0/T1OSO/T1CKI — Digital I/O / Timer1 oscillator output |
| पिन 12 | RC1/T1OSI/CCP2 — Digital I/O / Timer1 oscillator input / CCP2 |
| पिन 13 | RC2/CCP1 — Digital I/O / CCP1 PWM output |
| पिन 14 | RC3/SCK/SCL — Digital I/O / SPI clock / I2C clock |
| पिन 15 | RC4/SDI/SDA — Digital I/O / SPI data in / I2C data |
| पिन 16 | RC5/SDO — Digital I/O / SPI data out |
| पिन 17 | RC6/TX/CK — Digital I/O / UART TX / clock |
| पिन 18 | RC7/RX/DT — Digital I/O / UART RX / data |
| पिन 19 | Vss — Ground reference |
| पिन 20 | Vdd — Positive supply voltage (2.0 V to 5.5 V) |
| पिन 21 | RB0/INT0 — Digital I/O / External interrupt 0 |
| पिन 22 | RB1/INT1 — Digital I/O / External interrupt 1 |
| पिन 23 | RB2/INT2 — Digital I/O / External interrupt 2 |
| पिन 24 | RB3/CCP2 — Digital I/O / CCP2 PWM |
| पिन 25 | RB4 — Digital I/O with interrupt-on-change |
| पिन 26 | RB5 — Digital I/O with interrupt-on-change |
| पिन 27 | RB6/PGC — Digital I/O / ICSP clock (programming/debug) |
| पिन 28 | RB7/PGD — Digital I/O / ICSP data (programming/debug) |
सामान्य अनुप्रयोग
PIC18LF2220-I/SO के लिए उपयुक्त है 6 अनुप्रयोगs: Battery-Powered Sensor Nodes, Consumer Appliance Control Panels, USB-to-UART Bridge Dongles, Industrial Process Monitoring, Educational & Hobbyist Embedded Boards, LED Lighting & PWM Dimming Control.
Battery-Powered Sensor Nodes
The PIC18LF2220-I/SO fits battery-powered sensor nodes because its LF low-voltage core operates from 2.0 V to 5.5 V, supporting direct connection to 2-cell AA alkaline (3 V) or 3-cell NiMH (3.6 V) battery stacks without any boost converter. With nanoWatt Technology sleep current below 1 uA and 10 MIPS performance at 40 MHz, the MCU can wake on a timer interrupt, read a sensor via the 10-bit ADC, transmit, and return to sleep, achieving multi-year battery life on a 2000 mAh cell. The 4 KB Flash accommodates a small RTOS or state machine plus BLE/Zigbee application code.
अनुशंसित
Consumer Appliance Control Panels
The PIC18LF2220-I/SO is well-suited for consumer appliance front-panel controllers such as washing machines, microwave ovens, and dishwashers. Its 25 I/O pins directly drive 7-segment displays, keypads, LED indicators, and triac/MOSFET gate drivers for motor or heater loads, eliminating external I/O expanders. The 40 MHz CPU speed and 10-bit ADC handle rotary encoder inputs, temperature sensing (NTC thermistors), and capacitive touch via software libraries, while the 2.0-5.5 V range supports 3.3 V or 5 V designs.
अनुशंसित
USB-to-UART Bridge Dongles
The PIC18LF2220-I/SO can serve as the MCU in low-cost USB-to-UART converter dongles, paired with an external USB transceiver. The hardware UART (EUSART) provides reliable asynchronous serial communication up to 115.2 kbaud or higher, while the 2.0-5.5 V supply can be powered directly from USB 5 V or a 3.3 V LDO. With 4 KB Flash, the MCU has enough room for USB CDC class firmware or vendor-specific protocols, and ICSP allows in-field firmware updates over the USB lines.
अनुशंसित
Industrial Process Monitoring
In industrial 4-20 mA loop sensors, PLC input modules, and remote telemetry units, the PIC18LF2220-I/SO serves as a low-cost signal conditioner. The 10-bit ADC with up to 10 channels multiplexes thermocouple, RTD, pressure transducer, and 4-20 mA shunt inputs, while the hardware I2C/SPI peripherals communicate with external EEPROM for data logging. The industrial -40C to +85C temperature grade covers most factory environments, and the 28-SOIC package survives conformal coating and automated assembly.
अनुशंसित
Educational & Hobbyist Embedded Boards
The PIC18LF2220-I/SO is widely used in hobbyist kits, PICKit-compatible development boards, and university embedded systems courses. Its 28-SOIC package fits the popular 28-pin PIC development board form factor, and Microchip's MPLAB X IDE + XC8 compiler + PICKit 4 programmer toolchain provides free academic access. The PIC18 architecture's deterministic interrupts and Harvard memory model teach core MCU concepts (timers, ADC, PWM) at a price point suitable for student budgets.
अनुशंसित
LED Lighting & PWM Dimming Control
The PIC18LF2220-I/SO drives multi-channel LED lighting systems using the CCP/ECCP module for hardware PWM at up to 40 MHz, generating flicker-free dimming curves from 0% to 100% duty cycle. Each I/O pin can source/sink 25 mA, sufficient to drive logic-level MOSFETs directly for high-power LED strings. The 25 I/O pins support RGBW (4 channels) plus status indicators and button inputs. nanoWatt sleep enables standby power below 100 uA for ENERGY STAR compliance.
अनुशंसित
अनुशंसित उत्पादों का सारांश
के लिए इंजीनियरिंग संदर्भ डेटा PIC18LF2220-I/SO — तुलना, डिज़ाइन मार्गदर्शन और अनुपालन जानकारी।
चयन गाइड
विकल्पों के साथ तुलना
| पैरामीटर | यह उत्पाद | PIC18LF2221-I/SO | PIC18LF2220T-I/SO | PIC18LF2320-I/SO | PIC18F2220-I/SO | PIC18F2221-I/SO | PIC18LF14K22-I/SO |
|---|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 28-SOIC | 28-SOIC - same | 28-SOIC - same | 28-SOIC - same | 28-SOIC - same | 28-SOIC - same | 28-SOIC - same |
| Supply Voltage Range | 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 | 4.5 V to 5.5 V | 4.5 V to 5.5 V | 1.8 V to 3.6 V |
| Flash Memory | 4 KB | 8 KB | 4 KB | 8 KB | 4 KB | 8 KB | 16 KB |
| SRAM | 512 B | 512 B | 512 B | 512 B | 512 B | 512 B | 512 B |
| CPU Speed | 40 MHz / 10 MIPS | 40 MHz / 10 MIPS | 40 MHz / 10 MIPS | 40 MHz / 10 MIPS | 40 MHz / 10 MIPS | 40 MHz / 10 MIPS | 64 MHz / 16 MIPS |
| I/O Pins | 25 | 25 | 25 | 25 | 25 | 25 | 24 |
| ADC | 10-bit, 10 channels | 10-bit, 10 channels | 10-bit, 10 channels | 10-bit, 10 channels | 10-bit, 10 channels | 10-bit, 10 channels | 10-bit, 11 channels |
| Operating Temperature | -40C to +85C (Industrial) | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C |
मुख्य विशेषताएँ
- Lowest-voltage PIC18 in the family (2.0 V start, vs 4.5 V on non-LF) (बनामPIC18F2220-I/SO)
- Direct upgrade path to 8 KB Flash without PCB change (बनामPIC18LF2221-I/SO)
- Modern peripheral set vs older PIC16 baseline (बनामPIC18LF14K22-I/SO)
डिज़ाइन नोट्स
The PIC18LF2220-I/SO nanoWatt Technology supports multiple power-saving modes: Sleep (CPU off, peripherals off, <1 uA typical), Idle (CPU off, peripherals on, ~5.8 uA typical), and RC Run modes. For battery-powered designs, leverage Sleep with Watchdog Timer wake-up every few seconds to read sensors - estimated battery life on a 2000 mAh AA cell exceeds 5 years for a 0.1% duty-cycle sensor read. Always enable the Brown-out Reset (BOR) module via CONFIG register to prevent Flash corruption during voltage dips.
The 28-SOIC package follows JEDEC SO-28W (7.50 mm body width). Use a land pattern with 1.27 mm pitch, pad width 0.6 mm, and pad length 1.8 mm for reliable solder fillets. Place a 100 nF decoupling capacitor as close as possible to pin 20 (Vdd), with a second 10 uF bulk capacitor within 5 mm. Route the ICSP pins (RB6/PGC, RB7/PGD, MCLR/Vpp) to a 5-pin header on the board edge for programming/debug access without disassembling the product.
Do not confuse PIC18LF2220 (2.0-5.5 V) with PIC18F2220 (4.5-5.5 V) - using the non-LF variant below 4.5 V causes Flash programming failures and erratic ADC readings. When migrating firmware between the two, verify CONFIG register settings (especially LVP - Low-Voltage Programming) - LVP must match the toolchain's ICSP voltage levels. Always read the device ID at startup (0x1050 for LF2220, 0x1060 for LF2221) to confirm the expected die before executing peripheral-specific code.
अनुपालन जानकारी
RoHS and REACH compliant per Microchip product page. Not AEC-Q100 qualified - this is an industrial-grade part (-40C to +85C). For automotive applications, Microchip offers separate PIC18LF2220 automotive-grade variants on request.
