PIC18F1330T-I/SO - 8KB Flash 40MHz 8-bit MCU | Microchip | 18-SOIC
MPN: PIC18F1330T-I/SO ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $3.45 | $3.45 |
| 10 | $3.1 | $31.00 |
| 100 | $2.78 | $278.00 |
| 500 | $2.45 | $1,225.00 |
| 1,000 | $2.15 | $2,150.00 |
PIC18F1330T-I/SO Overview
An 8-bit microcontroller (MCU) is a small, self-contained computer-on-a-chip that combines a CPU, non-volatile program memory (Flash), volatile data memory (RAM), and a set of mixed-signal peripherals (ADC, PWM, timers, communication ports) onto a single die. Within the broader taxonomy, PIC18 belongs to Microchip's enhanced mid-range 8-bit family, which sits below the 16-bit dsPIC/PIC24 and 32-bit PIC32 families, and is widely deployed in cost- and power-sensitive embedded designs where deterministic interrupt response and simple programming models outweigh raw computational throughput.
Key specifications of the PIC18F1330T-I/SO include 8 KB Flash, 256 bytes RAM, 16 general-purpose I/O pins, an integrated 10-bit ADC, a Power Control PWM module with up to 6 PWM channels, and operating voltage of 2.0 V to 5.5 V. The 40 MHz internal oscillator and 200 ns instruction execution allow deterministic loop control, while the SOIC-18 industrial-temperature (-40C to +85C) package supports surface-mount assembly for production volumes.
Architecturally, the PIC18F1330T-I/SO implements Microchip's enhanced Harvard RISC core with a 16-bit instruction word and 8-bit data path, providing high code density in C and assembly. The on-chip Power Control PWM (PCPWM), 10-bit ADC, and configurable peripherals enable fully digital closed-loop control of brushed DC, brushless DC, and switched-reluctance motors without external driver ICs, which simplifies BOM and reduces board area.
Typical applications include motor control (BLDC, PMSM, brushed DC), sensorless fan control, switched-mode power supply (SMPS) digital control loops, LED lighting drivers with dimming, and small appliance control boards. The integrated high-resolution PWM and ADC pairs make this MCU especially well-suited to closed-loop current/voltage regulation.
A critical design consideration is choosing between internal and external oscillator modes for noise-sensitive analog measurements; for motor-control designs the 40 MHz Fosc with PLL can introduce switching noise on ADC channels and may require careful grounding and filter selection. The 18-pin SOIC package leaves only 16 GPIO pins, so design reuse from larger PIC18F variants requires careful peripheral remapping.
This page synthesizes distributor pricing, parametric proximity scores for drop-in alternatives, and PCB-layout guidance specific to the PIC18F1330T-I/SO - engineering context not consolidated in the manufacturer datasheet alone.
Drop-in alternatives for PIC18F1330T-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 PIC18F1330T-I/SO (same form factor and footprint) — differing in Package, ADC, Operating Temperature, Core, MSL Level.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC18F1330-I/SO
✅ Drop-In✓ In Stock
$1.95 / Unit
View Datasheet →PIC18F1320T-I/SO
✅ Drop-In✓ In Stock
$4.21 / Unit
View Datasheet →PIC18F1220-I/SO
✅ Drop-In📋 Reference alternative (not in catalog)
PIC18F1330T-I/SO Maximum Ratings & Electrical Characteristics
| Core | PIC 8-bit enhanced Harvard RISC |
| Program Memory | 8 KB Flash (4K x 16) |
| Data Memory (RAM) | 256 bytes |
| Maximum CPU Frequency | 40 MHz |
| Instruction Execution | 200 ns at 40 MHz |
| Operating Voltage | 2.0 V to 5.5 V |
| I/O Pins | 16 |
| ADC | 10-bit, 5 channels |
| PWM Channels | Up to 6 (Power Control PWM) |
| Timers | Timer0/1/2/3 |
| Package | 18-SOIC (7.50 mm body width, 0.295 inch) |
| Operating Temperature | -40C to +85C (Industrial) |
| Mounting Type | Surface Mount |
| MSL Level | 1 |
| RoHS Status | Compliant |
PIC18F1330T-I/SO Pin Configuration
| Pin 1 | MCLR/RA3 — Master Clear (reset) input or GPIO RA3 |
| Pin 2 | OSC1/RA0 — Crystal oscillator input or GPIO RA0 |
| Pin 3 | OSC2/RA1 — Crystal oscillator output or GPIO RA1 |
| Pin 4 | RA2 — GPIO RA2 |
| Pin 5 | RA5 — GPIO RA5 / analog input |
| Pin 6 | VSS — Ground reference |
| Pin 7 | VDD — Positive supply voltage (2.0-5.5 V) |
| Pin 8 | RB0 — GPIO RB0 / INT0 external interrupt |
| Pin 9 | RB1 — GPIO RB1 |
| Pin 10 | RB2 — GPIO RB2 |
| Pin 11 | RB3 — GPIO RB3 |
| Pin 12 | RB4 — GPIO RB4 |
| Pin 13 | RB5 — GPIO RB5 / PWM output |
| Pin 14 | RB6 — GPIO RB6 / PWM output / ICSP clock |
| Pin 15 | RB7 — GPIO RB7 / PWM output / ICSP data |
| Pin 16 | RA6 — GPIO RA6 / analog input |
| Pin 17 | RA7 — GPIO RA7 / analog input |
| Pin 18 | VSS — Ground reference (secondary) |
Typical Applications
PIC18F1330T-I/SO is suitable for 6 applications: BLDC and PMSM Motor Control, Sensorless Fan and Pump Speed Control, Switched-Mode Power Supply (SMPS) Digital Control, LED Lighting Drivers with Dimming, Small Appliance Control Boards, Industrial Sensor Signal Conditioning.
BLDC and PMSM Motor Control
The PIC18F1330T-I/SO suits small BLDC and PMSM motor drives where the integrated Power Control PWM module eliminates external gate-driver ICs. Its 6 PWM channels support complementary drive with programmable dead-band, while the 10-bit ADC samples phase currents for sensorless back-EMF control loops. Compared with discrete analog motor-control solutions, this MCU reduces BOM count by 5-8 components and provides firmware-driven commutation tuning over the full operating envelope from 2-5.5 V supply.
Recommended
Sensorless Fan and Pump Speed Control
For sensorless cooling fans and small liquid pumps, the PIC18F1330T-I/SO provides back-EMF zero-crossing detection and closed-loop RPM control without an external Hall sensor. The 40 MHz CPU executes the commutation algorithm and PID loop within microseconds, while the 256-byte RAM holds state variables and the 8 KB Flash stores the full sensorless algorithm. Operating from 3.3 V or 5 V fan rails, this MCU replaces legacy analog fan-control ICs with digital accuracy and quieter acoustics.
Recommended
Switched-Mode Power Supply (SMPS) Digital Control
The PIC18F1330T-I/SO can implement digital control loops for small isolated and non-isolated SMPS topologies up to roughly 100 W output. Its 40 MHz Fosc and 10-bit ADC with fast conversion enable voltage-mode and peak-current-mode control at 100-500 kHz switching frequencies. Compared with analog UC3842-style controllers, the MCU-based approach adds adaptive over-current protection, soft-start sequencing, and digital telemetry via UART or I2C. Use the high-resolution Power Control PWM to drive a digital optocoupler or gate-driver transformer.
Recommended
LED Lighting Drivers with Dimming
Architectural and industrial LED drivers benefit from the PIC18F1330T-I/SO's 6 PWM channels for multi-channel RGBW or tunable-white dimming. The MCU provides logarithmic dimming curves, color-temperature compensation, and DALI or 0-10 V dimming protocol decoding without external DSP. With 8 KB Flash, designers can store multiple lighting scenes and smooth-fade algorithms. The integrated ADC monitors LED current for thermal foldback, extending luminaire lifetime in enclosed fixtures.
Recommended
Small Appliance Control Boards
Coffee machines, blenders, air purifiers, and other small appliances use the PIC18F1330T-I/SO as the main control MCU for motor drive, user-interface button scanning, and LCD or LED status display. Its 18-SOIC package fits in tight enclosures, and 2.0-5.5 V operation accepts battery or rectified-mains-derived rails directly. The 256-byte RAM is sufficient for state-machine-based appliance logic, and 8 KB Flash holds the full user-interface firmware plus factory calibration constants.
Recommended
Industrial Sensor Signal Conditioning
Process-control sensor transmitters and 4-20 mA current-loop nodes use the PIC18F1330T-I/SO to digitize analog sensor inputs, apply linearization curves, and drive the loop-current PWM with calibrated accuracy. The 10-bit ADC provides sufficient resolution for temperature, pressure, and flow sensors in non-precision applications, while the 6 PWM channels can drive H-bridge excitation for bridge-type sensors. Compared with pure analog signal chains, the MCU adds digital calibration storage in Flash and self-test routines.
Recommended
Recommended Products Summary
Engineering reference data for PIC18F1330T-I/SO — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC18F1330-I/SO | PIC18F1330-I/SS | PIC18F1320T-I/SO | PIC18F1230-I/P | PIC18F1220-I/SO |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | SOIC-18 | SOIC-18 (same) | SSOP-20 (different) | SOIC-18 (same) | PDIP-18 (different) | SOIC-18 (same) |
| Flash Memory | 8 KB | 8 KB | 8 KB | 8 KB | 8 KB | 2 KB |
| RAM | 256 bytes | 256 bytes | 256 bytes | 256 bytes | 256 bytes | 256 bytes |
| Maximum Frequency | 40 MHz | 40 MHz | 40 MHz | 40 MHz | 40 MHz | 40 MHz |
| Power Control PWM | Yes (10-bit, 6 channels) | Yes (10-bit, 6 channels) | Yes (10-bit, 6 channels) | No | Yes | No |
| 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 | 2.0 V to 5.5 V |
| ADC | 10-bit, 5 channels | 10-bit, 5 channels | 10-bit, 5 channels | 10-bit, 5 channels | 10-bit, 4 channels | 10-bit, 4 channels |
Key Differentiators
- Integrated Power Control PWM peripheral for motor control (vs PIC18F1320T-I/SO)
- Higher Flash density than entry-level PIC18F1220 (vs PIC18F1220-I/SO)
- Industrial temperature range on SOIC package (vs PIC18F1330-I/SS (SSOP variant))
Design Notes
The PIC18F1330T-I/SO requires a bulk decoupling capacitor of at least 100 nF within 5 mm of the VDD pin, plus a 10 uF bulk capacitor on the main supply rail. The internal voltage regulator is sensitive to supply ripple; place the decoupling capacitor directly between VDD (pin 7) and VSS (pin 6) using short, wide PCB traces. For motor-control designs where VDD is derived from a switching regulator, add a ferrite bead or LC filter between the switching rail and the MCU VDD to prevent switching noise from coupling into the ADC reference.
The PIC18F1330T-I/SO MCLR pin (pin 1) is internally weakly pulled-up in some configurations but should always have an external pull-up of 10 kohm to VDD for reliable reset behavior. The ICSP programming pins (RB6/RB7) must not be permanently pulled low during normal operation or programming will fail. Brown-out detection must be enabled in CONFIG registers for any application where supply voltage could dip below 2.0 V momentarily.
Separate analog and digital ground planes where the PCB stack-up allows, joining them only at a single point near the MCU VSS pin (pin 6). Keep the analog reference voltage traces (AVDD/AVSS if used) routed away from PWM switching traces to minimize ADC noise pickup. The crystal or resonator on OSC1/OSC2 (pins 2/3) should be placed within 5 mm of the MCU with a ground guard ring on the PCB.
Compliance Information
RoHS and REACH compliant per Microchip product declaration. Industrial temperature grade -40C to +85C (not AEC-Q100 automotive qualified - choose AEC-Q100 qualified PIC18 variants for automotive). Lead-free and conflict-minerals compliant per Microchip supplier policy.
