PIC18F1330-I/SO - 8-bit 40MHz MCU, 8KB Flash, 18-SOIC | Microchip
MPN: PIC18F1330-I/SO ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $4.1 | $4.10 |
| 10 | $3.62 | $36.20 |
| 100 | $2.85 | $285.00 |
| 500 | $2.34 | $1,170.00 |
| 1,000 | $1.95 | $1,950.00 |
PIC18F1330-I/SO Overview
What is a PIC18F Microcontroller? PIC18F microcontrollers are 8-bit Harvard-architecture MCUs from Microchip Technology that combine a rich peripheral set with Flash program memory. They sit within the broader 8-bit MCU hierarchy as a high-performance step above the PIC16F baseline, competing with other 8-bit families from NXP, STMicroelectronics, and Renesas. PIC18F parts are widely used in motor control, sensor conditioning, and cost-sensitive embedded designs where deterministic 8-bit performance and mature toolchain support outweigh the need for 32-bit compute.
Key features of the PIC18F1330 include 8 KB Flash (4K x 16 words), 256 bytes of SRAM, 16 I/O pins, integrated high-performance PWM modules, a 10-bit A/D converter, and nanoWatt sleep modes that drop supply current into the microamp range. The device operates across 4.2 V to 5.5 V, supports in-circuit serial programming (ICSP), and ships in a -40 C to +85 C industrial temperature grade. The 18-SOIC package keeps the part within a compact through-hole-compatible footprint.
The PIC18F1330 architecture combines a 16-bit instruction word with an 8-bit data path, allowing single-cycle accesses on Flash, RAM, and EEPROM buses. The enhanced core supports interrupt prioritisation, hardware multiply, and a C-friendly instruction set, enabling efficient code generation under the MPLAB XC8 toolchain. The integrated PWM and 10-bit ADC make the part well suited to closed-loop control.
Typical applications include brushless DC (BLDC) motor control, sensor interface boards, industrial control with PWM-driven actuators, LED lighting controllers, small home appliances, and battery-powered instruments leveraging nanoWatt sleep. The combination of high-performance PWM and nanoWatt technology is what makes this part particularly well matched to low-cost variable-speed motor drives.
When designing with the PIC18F1330-I/SO, place a 100 nF decoupling capacitor as close as possible to the VDD pin and tie all unused I/O pins to defined logic levels to minimise current leakage. For motor control, ensure the PWM outputs are routed away from sensitive analog traces to reduce switching noise coupling into the ADC input. The 18-SOIC package is well supported on hand-solderable prototypes and standard reflow profiles.
This page synthesises distributor pricing, drop-in same-package alternatives, and practical design notes compiled from the Microchip PIC18F1230/1330 datasheet family. It is intended to give engineers an at-a-glance view of where the PIC18F1330-I/SO fits within the 8-bit MCU landscape and which footprint-compatible parts can be substituted without a PCB rework.
Drop-in alternatives for PIC18F1330-I/SO — 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 PIC18F1330-I/SO (same form factor and footprint) — differing in Package, Operating Temperature, I/O Pins, A/D Converter, ADC.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC18F1230-I/SO
✅ Drop-In✓ In Stock
$2.05 / Unit
View Datasheet →PIC18F1330T-I/SO
✅ Drop-In✓ In Stock
$2.15 / Unit
View Datasheet →PIC18F1320-I/SO
✅ Drop-In✓ In Stock
$2.85 / Unit
View Datasheet →PIC18F1320T-I/SO
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$4.21 / Unit
View Datasheet →PIC18F14K50-I/SO
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$1.45 / Unit
View Datasheet →PIC18F1330-I/SO Maximum Ratings & Electrical Characteristics
| Core | PIC18 8-bit Enhanced RISC |
| Clock Speed | 40 MHz (10 MIPS) |
| Program Memory (Flash) | 8 KB (4K x 16 words) |
| RAM | 256 bytes |
| Supply Voltage | 4.2 V to 5.5 V |
| I/O Pins | 16 |
| ADC | 10-bit |
| PWM | High-performance PWM modules, integrated |
| Package | 18-pin SOIC (300 mil) |
| Mounting Type | Surface Mount |
| Operating Temperature | -40 C to +85 C (Industrial) |
| Power-Saving Modes | nanoWatt technology (sleep/Idle modes) |
| Programming Interface | ICSP (In-Circuit Serial Programming) |
| RoHS Status | Compliant |
| Lead-Free / Halogen-Free | Lead-free; Halogen-free status unknown |
PIC18F1330-I/SO Pin Configuration
| Pin 1 | MCLR/RA5 — Master Clear (reset) input or general-purpose I/O RA5 |
| Pin 2 | RA0/AN0 — PORTA bit 0 / analog input 0 |
| Pin 3 | RA1/AN1 — PORTA bit 1 / analog input 1 |
| Pin 4 | RA2/AN2 — PORTA bit 2 / analog input 2 |
| Pin 5 | RA3/AN3/VREF+ — PORTA bit 3 / analog input 3 / ADC VREF+ |
| Pin 6 | RA4/AN4 — PORTA bit 4 / analog input 4 |
| Pin 7 | VSS — Ground reference |
| Pin 8 | OSC1/RA6 — Oscillator crystal input or general-purpose I/O RA6 |
| Pin 9 | OSC2/RA7 — Oscillator crystal output or general-purpose I/O RA7 |
| Pin 10 | RC0/T1OSO/T1CKI — PORTC bit 0 / Timer1 oscillator output or clock input |
| Pin 11 | RC1/PWM1 — PORTC bit 1 / PWM1 output |
| Pin 12 | RC2/PWM2 — PORTC bit 2 / PWM2 output |
| Pin 13 | RC3/PWM3 — PORTC bit 3 / PWM3 output |
| Pin 14 | RC4/PWM4 — PORTC bit 4 / PWM4 output |
| Pin 15 | RC5 — PORTC bit 5 / general-purpose I/O |
| Pin 16 | RC6 — PORTC bit 6 / general-purpose I/O |
| Pin 17 | RC7 — PORTC bit 7 / general-purpose I/O |
| Pin 18 | VDD — Positive supply voltage (4.2 V to 5.5 V) |
Typical Applications
PIC18F1330-I/SO is suitable for 6 applications: Sensor Interface Boards, BLDC Motor Control (Small Scale), Industrial PWM-Driven Actuators, Battery-Powered Instruments, LED Lighting Controllers, Small Home Appliance Controllers.
Sensor Interface Boards
The PIC18F1330-I/SO suits low-cost sensor interface boards thanks to its 10-bit ADC, 16 I/O pins, and 40 MHz (10 MIPS) throughput. With 8 KB of Flash, the part can host interrupt-driven sensor polling routines and basic calibration tables without external memory. The 4.2 V to 5.5 V supply range covers industrial 5 V sensor rails directly. NanoWatt sleep modes cut average current below 1 uA in battery-backed telemetry nodes. Recommended companions include the MCP9700 analog temperature sensor and the MCP4725 12-bit DAC for sensor signal conditioning.
Recommended
BLDC Motor Control (Small Scale)
The PIC18F1330-I/SO's integrated high-performance PWM modules make it a strong fit for small brushless DC motor drives used in fans, pumps, and appliance pumps. The PWM block supports complementary outputs with programmable dead-time insertion, critical for safe switching of half-bridges. The 40 MHz core executes field-oriented control firmware at acceptable loop rates for motors under 100 W. The 18-SOIC package keeps the BOM compact for cost-sensitive consumer designs. Use the PIC18F25K40 family for higher-performance or larger motors.
Recommended
Industrial PWM-Driven Actuators
Industrial actuator drivers benefit from the PIC18F1330-I/SO's deterministic 8-bit performance and integrated PWM with fault input support. The part can drive up to 16 I/O pins for valve control, relay drivers, and H-bridge enable logic. Its -40 C to +85 C industrial temperature grade is suitable for factory-floor environments. The 8 KB Flash accommodates IEC 61131-3 ladder logic interpreters or simple PID controllers. The 18-SOIC package is widely accepted on hand-solderable industrial control boards.
Recommended
Battery-Powered Instruments
Battery-powered instruments leverage the PIC18F1330-I/SO's nanoWatt technology to extend operating life on a single coin cell or 2xAA pack. Sleep current drops to sub-microamp levels while the part awaits an interrupt, then wakes in microseconds to full 10 MIPS operation. The 5 V supply range fits common battery chemistries through boost converters or directly from 3 V cells when using the LF variant. The 256-byte RAM is sufficient for measurement buffering before periodic transmit cycles.
Recommended
LED Lighting Controllers
The PIC18F1330-I/SO is well matched to dimmable LED lighting controllers thanks to its PWM resolution and ADC for analog dim inputs. The 10-bit ADC accepts 0-10 V dimming signals or potentiometer inputs, while the PWM drives constant-current LED drivers via opto-isolated MOSFET gates. The 8-bit enhanced core supports DMX-512 or DALI receive routines in under 4 KB of Flash, leaving room for fade tables and color-mixing logic. The compact 18-SOIC footprint enables small inline dimmer modules.
Recommended
Small Home Appliance Controllers
Small home appliances such as coffee makers, blenders, and humidifiers use the PIC18F1330-I/SO for cost-effective user-interface control. The 16 I/O pins can drive 7-segment displays, button matrices, and buzzer outputs without external logic. The 10-bit ADC reads temperature sensors and motor current for closed-loop control. The enhanced PIC18 instruction set supports a small RTOS or simple state machine for multi-mode appliances. The 18-SOIC package keeps the PCB cost low in volume production.
Recommended
Recommended Products Summary
Engineering reference data for PIC18F1330-I/SO — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC18F1230-I/SO | PIC18F1320-I/SO | PIC18F14K50-I/SO |
|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 18-SOIC | 18-SOIC (same) | 18-SOIC (same) | 18-SOIC (same) |
| Program Memory (Flash) | 8 KB | 4 KB (-50%) | 8 KB (same) | 14 KB (+75%) |
| RAM | 256 bytes | 256 bytes (same) | 256 bytes (same) | 768 bytes (+200%) |
| Clock Speed | 40 MHz | 40 MHz (same) | 40 MHz (same) | 48 MHz (+20%) |
| ADC Resolution | 10-bit | 10-bit (same) | 10-bit (same) | 10-bit (same) |
| I/O Pins | 16 | 16 (same) | 16 (same) | 14 (-12%) |
| USB | No | No | No | Yes (USB 2.0 FS) |
| Supply Voltage | 4.2 V to 5.5 V | 4.2 V to 5.5 V | 4.2 V to 5.5 V | 2.0 V to 5.5 V (wider) |
| Operating Temperature | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C |
Key Differentiators
- Integrated high-performance PWM module in 18-SOIC footprint (vs PIC18F1230-I/SO)
- More Flash than PIC18F1230 sibling at the same price tier (vs PIC18F1230-I/SO)
- USB 2.0 Full-Speed option without changing PCB footprint (vs PIC18F14K50-I/SO)
Design Notes
Place a 100 nF (0.1 uF) decoupling capacitor as close as possible to the VDD pin (pin 18 on 18-SOIC). Add a bulk 10 uF tantalum or ceramic capacitor on the same supply rail near the MCU for transient load support. The PIC18F1330's nanoWatt sleep current drops below 1 uA only when all peripherals are disabled and the MCLR is held high; verify by measuring the actual quiescent current in your application, since peripheral modules left enabled can dominate sleep current.
The 18-SOIC package has 0.050 inch (1.27 mm) pin pitch. Reserve at least 6 mm of PCB length under the part for through-hole assembly if hand-soldering. Route the oscillator traces (OSC1/OSC2) on the top layer, keep them short, and surround them with a ground pour to minimise radiated EMI. For motor-control applications, isolate analog traces (ADC inputs) from PWM output traces on separate PCB layers to reduce switching noise coupling into measurements.
The PIC18F1330 is a 5 V part; operating below 4.2 V can cause Flash read errors and brown-out resets even if the part appears to run. Do not tie unused I/O pins floating; configure them as outputs or inputs with the internal weak pull-up enabled to minimise supply leakage. ICSP programming requires the PGD/PGC pins to be accessible; if you place series resistors on these lines, keep them below 100 ohm to avoid programming failures.
Compliance Information
RoHS and REACH compliance per Microchip product page. Lead-free matte-tin plating compatible with JEDEC J-STD-020 reflow profiles. Halogen-free status not stated explicitly in public data. Not AEC-Q100 qualified; choose AEC-Q100 K-series parts for automotive.
