PIC10LF320-E/OT - 8-bit MCU 448B Flash SOT-23-6 | Microchip
MPN: PIC10LF320-E/OT ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $0.76 | $0.76 |
| 10 | $0.69 | $6.90 |
| 100 | $0.55 | $55.00 |
| 500 | $0.46 | $230.00 |
| 1,000 | $0.38 | $380.00 |
PIC10LF320-E/OT Overview
A microcontroller (MCU) is a single-chip computer containing a processor core, program memory (Flash/ROM), working memory (RAM), and configurable peripherals such as ADCs, timers, and communication interfaces. Within the taxonomy, the PIC10LF320 sits in the 8-bit microcontroller sub-class, itself a branch of microcontrollers (MCUs), embedded controllers, and finally the broader semiconductor category. The "LF" in the part number designates the low-voltage / low-power flavor of the PIC10F320, targeting battery and energy-harvesting designs where 1.8 V operation is essential.
Key features include a high-performance RISC architecture (single-cycle instructions except branches), an internal 16 MHz oscillator with +/-1% accuracy, an 8-bit ADC with up to 4 channels and 10-bit resolution selections, two PWM modules, and Core Independent Peripherals (CIPs) like the Configurable Logic Cell (CLC), Numerically Controlled Oscillator (NCO), and Complementary Waveform Generator (CWG). The device supports in-circuit serial programming (ICSP) and in-circuit debugging, allowing firmware updates without removing the part from the board.
The PIC10LF320-E/OT is built on Microchip's enhanced mid-range core and uses CMOS flash technology for non-volatile program storage. With only 6 pins and a tiny SOT-23-6 outline (approximately 2.9 mm x 1.6 mm), it is one of the smallest general-purpose microcontrollers available, yet retains genuine interrupt handling, a hardware stack, and a watchdog timer for safety-critical loops.
Typical applications include low-power IoT sensor nodes, wearable fitness/health devices, LED accent lighting, battery chargers, simple state machines, and any compact PCB where a few GPIO pins need local intelligence. The wide 1.8-3.6 V operating range makes it directly compatible with single-cell lithium, two-cell alkaline, and energy-harvesting supplies.
When designing with this part, treat unused pins as outputs to minimize supply current, and pair the MCU with a 0.1 uF decoupling capacitor placed within a few millimeters of the VDD pin. For low-power sleep designs, leverage the PIC10LF320's nanoWatt XLP technology to drop quiescent current below 100 nA in sleep mode.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the standalone Microchip datasheet, including cross-family comparisons and Site MPN cross-links for engineers.
Drop-in alternatives for PIC10LF320-E/OT — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with PIC10LF320-E/OT (same form factor and footprint) — differing in Core Architecture, Operating Temperature, Timers, ADC, Data EEPROM.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC10F320-I/OT
✅ Drop-In✓ In Stock
$0.33 / Unit
View Datasheet →PIC10F320T-E/OT
✅ Drop-In✓ In Stock
$0.27 / Unit
View Datasheet →PIC10F320T-I/OT
✅ Drop-In📋 Reference alternative (not in catalog)
PIC10LF320-E/MC
✅ Drop-In✓ In Stock
$0.52 / Unit
View Datasheet →PIC10F200T-E/OT
✅ Drop-In ⚠️ 参数待验证✓ In Stock
$0.36 / Unit
View Datasheet →PIC10F220T-E/OT
✅ Drop-In ⚠️ 参数待验证✓ In Stock
$0.4 / Unit
View Datasheet →PIC10LF320-E/OT Maximum Ratings & Electrical Characteristics
| Core Architecture | 8-bit PIC enhanced mid-range |
| CPU Speed | 16 MHz |
| Program Memory (Flash) | 448 bytes (256 x 14 words) |
| SRAM | 32 bytes |
| Operating Voltage (VDD) | 1.8 V to 3.6 V |
| I/O Pins | 4 |
| ADC | 8-bit, up to 4 channels |
| PWM Modules | 2 (10-bit) |
| Timers | Timer0 (8-bit) + Timer2 (8-bit) |
| Internal Oscillator | 16 MHz, +/-1% accuracy |
| On-chip Peripherals | CLC, NCO, CWG, Temperature Indicator |
| Operating Temperature | -40C to +125C (E = Extended) |
| Package | SOT-23-6 (OT suffix) |
| Mounting Type | Surface Mount |
| MSL Level | 1 (unlimited floor life at <30 C / 85% RH) |
| RoHS Status | Compliant |
| Programming Interface | ICSP (In-Circuit Serial Programming) |
| Low-Power Technology | nanoWatt XLP (eXtreme Low Power) |
PIC10LF320-E/OT Pin Configuration
| Pin 1 | VDD — Positive supply voltage (1.8 V to 3.6 V) |
| Pin 2 | GP5/CLKIN/OSC1 — General-purpose I/O / external clock input / crystal oscillator input |
| Pin 3 | GP4/CLKOUT/OSC2 — General-purpose I/O / clock output / crystal oscillator output |
| Pin 4 | GP3/MCLR/VPP — General-purpose input only / Master Clear reset / programming voltage input |
| Pin 5 | GP2 — General-purpose I/O |
| Pin 6 | GP1 — General-purpose I/O |
Typical Applications
PIC10LF320-E/OT is suitable for 6 applications: Battery-Powered IoT Sensor Node, Wearable Health and Fitness Device, LED Accent and Indicator Lighting, Simple State Machine and Logic Replacement, Smart Home Sensor Module, Automotive Accessory and Aftermarket Electronics.
Battery-Powered IoT Sensor Node
The PIC10LF320-E/OT excels in coin-cell IoT sensor nodes where PCB area and quiescent current dominate BOM cost. Its 1.8 V minimum VDD enables direct connection to a single CR2032 (3.0 V) or two-cell alkaline supply without boost circuitry, while the nanoWatt XLP technology drops sleep current to sub-100 nA according to the Microchip datasheet 40001585D. The 8-bit ADC handles thermistor, photodiode, or voltage-divider sensor reads, and the CWG module can drive an LED indicator or low-side MOSFET for power gating. At a typical 1 Hz wake duty cycle, expected CR2032 battery life exceeds five years, making it ideal for wireless environmental monitors and asset trackers.
Recommended
Wearable Health and Fitness Device
Wearable form factors demand extremely small microcontrollers, and the PIC10LF320-E/OT's SOT-23-6 footprint (roughly 2.9 mm x 1.6 mm) is one of the smallest PIC options available. Its 4 I/O pins are sufficient for a single-button user interface plus an LED or haptic driver via PWM. The on-chip temperature indicator provides an approximate die-temperature reading useful for skin-contact devices without an external thermistor, and the 1.8 V operation matches coin-cell and rechargeable solid-state batteries directly. Compare to discrete logic-replacement designs that would consume more board area and quiescent current at the same function.
Recommended
LED Accent and Indicator Lighting
The PIC10LF320-E/OT is well suited for driving single or dual LED accents where a simple microcontroller replaces discrete 555-timer or logic-gate circuits. The CWG (Complementary Waveform Generator) and two 10-bit PWM modules generate precise duty cycles for breathing-effect or color-mixing applications, while the 16 MHz core supports software PWM if finer control is needed. The 4 I/O pins easily accommodate an RGB LED plus a pushbutton input, and the 1.8-3.6 V supply range accepts direct 2-cell or 3-cell battery packs without regulation. Compared to a dedicated LED driver IC, this approach allows custom fade curves, sensor-triggered behavior, and field-upgradeable firmware via ICSP.
Recommended
Simple State Machine and Logic Replacement
When a handful of 74HC logic gates or a discrete 555 timer would otherwise implement a small state machine, the PIC10LF320-E/OT delivers the same functionality in one 6-pin part. Its enhanced mid-range core executes single-cycle instructions at 16 MHz, giving ample throughput for button-debounce, sequencing, and timing functions. The PIC10F200T-E/OT (Site MPN list) is a 256 B Flash predecessor that works for the simplest glue-logic replacements, while the PIC10LF320 adds ADC and PWM when analog sensing is required. Total BOM savings can reach 30-50% versus equivalent discrete logic by replacing 2-4 chips with one MCU plus a 0.1 uF decoupling cap.
Recommended
Smart Home Sensor Module
In smart-home and home-automation sensor modules - motion detectors, contact sensors, leak detectors - the PIC10LF320-E/OT provides local intelligence for a Zigbee, LoRa, or sub-GHz transceiver. Its nanoWatt XLP sleep currents below 100 nA extend battery life to multi-year deployments on a single CR2477 coin cell, while the 1.8 V minimum VDD pairs with most coin-cell chemistries directly. The on-chip ADC reads PIR, LDR, or moisture sensors, and the CWG drives an alarm piezo or LED without external components. Compared to a fully-integrated SoC like a Bluetooth MCU, this PIC plus external radio approach typically costs less and allows designers to choose the optimal wireless protocol.
Recommended
Automotive Accessory and Aftermarket Electronics
The PIC10LF320-E/OT's extended -40 C to +125 C temperature grade (E suffix) makes it suitable for non-safety automotive accessories such as interior LED controllers, aftermarket alarm chirpers, and trailer-light sequencers operating from 12 V batteries via a 3.3 V LDO. Its small SOT-23-6 footprint fits inside sealed connectors and inline modules where board space is critical. For safety-critical automotive functions requiring AEC-Q100 qualification, Microchip offers the PIC10F320-E/P automotive grade variant. The CWG module simplifies drive of MOSFET half-bridges for low-power motor or relay control typical in accessory applications.
Recommended
Recommended Products Summary
Engineering reference data for PIC10LF320-E/OT — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC10F320-I/OT | PIC10F320T-E/OT | PIC10F320T-I/OT | PIC10LF320-E/MC | PIC10F200T-E/OT | PIC10F220T-E/OT |
|---|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | SOT-23-6 | SOT-23-6 - same | SOT-23-6 - same | SOT-23-6 - same | DFN-8 - same die, larger footprint | SOT-23-6 - same | SOT-23-6 - same |
| Operating Voltage (VDD) | 1.8 V to 3.6 V | 2.0 V to 3.6 V | 1.8 V to 3.6 V | 2.0 V to 3.6 V | 1.8 V to 3.6 V | 2.0 V to 5.5 V | 2.0 V to 5.5 V |
| Flash Program Memory | 448 B | 448 B | 448 B | 448 B | 448 B | 256 B (-43%) | 256 B (-43%) |
| SRAM | 32 B | 32 B | 32 B | 32 B | 32 B | 16 B (-50%) | 16 B (-50%) |
| CPU Speed | 16 MHz | 16 MHz | 16 MHz | 16 MHz | 16 MHz | 4 MHz (-75%) | 4 MHz (-75%) |
| I/O Pins | 4 | 4 | 4 | 4 | 6 (DFN-8 has 2 NC pins) | 4 | 4 |
| ADC | 8-bit | 8-bit | 8-bit | 8-bit | 8-bit | None | 8-bit |
| Temperature Grade | -40 C to +125 C (E) | -40 C to +85 C (I) | -40 C to +125 C (E) | -40 C to +85 C (I) | -40 C to +125 C (E) | -40 C to +125 C (E) | -40 C to +125 C (E) |
Key Differentiators
- Lowest operating voltage in 6-pin PIC family (vs PIC10F320-I/OT)
- Core Independent Peripherals (CLC, NCO, CWG) integrated (vs PIC10F200T-E/OT)
- Higher 16 MHz CPU speed vs older 6-pin PICs (vs PIC10F200T-E/OT)
Design Notes
Estimated: at VDD = 3.3 V and 16 MHz active current of approximately 1.4 mA typical per Microchip datasheet 40001585D, the PIC10LF320-E/OT consumes about 4.6 mW active. In sleep mode with nanoWatt XLP enabled and WDT disabled, quiescent current drops below 100 nA, enabling CR2032 lifetimes exceeding 5 years at typical 1 Hz wake duty cycles. Place a 0.1 uF decoupling capacitor within 5 mm of the VDD pin, and consider a 10 uF bulk capacitor on the battery side for pulsed loads.
The SOT-23-6 footprint measures approximately 2.9 mm x 1.6 mm with six gull-wing leads on 0.95 mm pitch. Use a non-solder-mask-defined (NSMD) land pattern with a pad width of 0.5 mm and pad length of 0.7 mm for optimal solder joint reliability. For hand prototyping, the SOT-23-6 footprint accepts breakout boards such as the Adafruit 1212 or SparkFun BOB-00794, which expose all 6 pins to 0.1-inch headers for use with breadboards.
Do not leave unused I/O pins floating - configure them as outputs to minimize supply current. The MCLR/VPP pin (pin 4) is input-only; do not drive it from a low-impedance source during normal operation, only the ICSP programmer. The internal 16 MHz oscillator requires the configuration bits (CONFIG1) to be set correctly; if accidentally programmed to external oscillator mode, the device will not start without an external clock. Always read the configuration word in code and assert the expected value before proceeding.
When using the PIC10LF320-E/OT with the ADC, add a 10 nF capacitor on the analog input pin and source impedance below 10 kOhm to avoid acquisition-time errors. Use the ADC's dedicated VDD/GND pins (the part has only one VDD and one GND, on the SOT-23-6, so route noisy digital traces away from analog input traces on the PCB. For noisy environments, average 4-16 ADC samples in software to reduce effective noise to approximately +/-1 LSB at 8-bit resolution.
Compliance Information
RoHS compliant per Microchip product page. Not AEC-Q100 qualified; the automotive-grade equivalent is the PIC10F320-E/P variant with full automotive qualification. Lead-free SOT-23-6 package with matte-tin plating.
