PIC18F1330-E/SO - 8KB Flash 25MHz 8-bit MCU | Microchip SOIC-18
MPN: PIC18F1330-E/SO ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $3.18 | $3.18 |
| 10 | $2.86 | $28.60 |
| 100 | $2.42 | $242.00 |
| 500 | $2.1 | $1,050.00 |
| 1,000 | $1.84 | $1,840.00 |
PIC18F1330-E/SO Overview
A microcontroller is an integrated circuit that combines a CPU, program memory, data memory, and programmable peripherals on a single die. The PIC18F1330 sits in the 8-bit microcontroller segment of Microchip's product taxonomy (PIC18F family -> PIC microcontroller family -> microcontroller -> embedded computing -> semiconductor). It is built on an Enhanced Harvard architecture with a 16-bit instruction word and 8-bit data path, allowing single-cycle ALU operations on the internal data bus while fetching the next instruction in parallel.
Key features include enhanced Flash program memory that supports in-circuit serial programming (ICSP) and in-circuit debugging via two pins, a 10-bit A/D converter with multiple input channels, a 10-bit Pulse-Width Modulation (PWM) module optimized for motor control and power conversion, and nanoWatt Technology dynamic power management modes. Internal oscillator options and a wide operating temperature range of -40C to +125C (the "-E" suffix denotes the extended industrial temperature grade) suit battery-powered and automotive-grade designs.
The device combines a precision 8 MHz internal RC oscillator selectable in software, hardware multiplier, watchdog timer with its own on-chip RC oscillator for reliable operation, and dual analog comparators. Designers can use ICSP to reprogram the Flash in-circuit, eliminating the need for an external socket or programmer.
Typical applications include BLDC motor control in small appliances, sensor signal conditioning, lighting control, general-purpose 8-bit embedded control, and digital power conversion where the high-resolution PWM is used to drive MOSFETs. Its combination of Flash memory, ICSP, and nanoWatt Technology also makes it a popular choice for low-power industrial sensor nodes.
When designing with this part, allocate an extra pin pair for ICSP (typically RB6/RB7) and ensure the MCLR reset pin has the correct pull-up configuration to enter programming or normal operation reliably across temperature. Use decoupling capacitors within a few millimeters of VDD/VSS to suppress digital switching noise from disturbing the A/D converter.
This page combines manufacturer specifications, distributor pricing, drop-in alternatives, and practical design notes that go beyond a single datasheet revision to help engineers evaluate the PIC18F1330-E/SO for new designs.
Drop-in alternatives for PIC18F1330-E/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-E/SO (same form factor and footprint) — differing in I/O Pins, Operating Temperature, Package, RoHS Status.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC18F1330-I/SO
✅ Drop-In✓ In Stock
$1.95 / Unit
View Datasheet →PIC18F1230-I/SO
✅ Drop-In✓ In Stock
$2.05 / Unit
View Datasheet →PIC18F1320-I/SO
✅ Drop-In✓ In Stock
$2.85 / Unit
View Datasheet →PIC18F1330-E/SP
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
PIC18F1230-E/SO
✅ Drop-In✓ In Stock
$3.05 / Unit
View Datasheet →PIC18F1330-E/SO Maximum Ratings & Electrical Characteristics
| Product Family | PIC18F Microcontroller |
| Core Architecture | 8-bit PIC Enhanced Harvard |
| Program Memory Type | Enhanced Flash |
| Program Memory Size | 8 KB (4K x 16 words) |
| RAM Size | 256 bytes |
| Data EEPROM | 256 bytes (per PIC18F1230/1330 datasheet) |
| Maximum CPU Frequency | 25 MHz (10 MIPS) |
| Supply Voltage (VDD) | 2.0 V to 5.5 V |
| Operating Temperature | -40 C to +125 C (E grade) |
| A/D Converter | 10-bit, multi-channel |
| PWM Modules | 10-bit enhanced PWM |
| Comparators | 2 analog comparators |
| I/O Pins | 16 (in 18-pin SOIC) |
| Package | 18-SOIC (0.295" / 7.50 mm body width) |
| Mounting Type | Surface Mount |
| In-Circuit Programming | ICSP (2-wire) |
| Watchdog Timer | Yes, with dedicated on-chip RC oscillator |
| RoHS Status | Compliant (per Microchip product page) |
PIC18F1330-E/SO Pin Configuration
| Pin 1 | RA0/AN0 — Digital I/O / analog channel 0 input |
| Pin 2 | RA1/AN1 — Digital I/O / analog channel 1 input |
| Pin 3 | RA2/AN2 — Digital I/O / analog channel 2 input |
| Pin 4 | RA3/AN3/VREF+/MCLR — Digital I/O / analog channel 3 / ADC Vref+ / Master Clear reset (input) |
| Pin 5 | RA4/T0CKI/C1OUT — Digital I/O / Timer0 clock input / Comparator 1 output |
| Pin 6 | RA5/AN4/C2IN+ — Digital I/O / analog channel 4 / Comparator 2 non-inverting input |
| Pin 7 | RA6/OSC2/CLKO — Digital I/O / crystal oscillator output / clock output |
| Pin 8 | RA7/OSC1/CLKI — Digital I/O / crystal oscillator input / clock input |
| Pin 9 | VSS — Ground reference |
| Pin 10 | VDD — Positive supply voltage (2.0V to 5.5V) |
| Pin 11 | RB0/INT0/CCP1 — Digital I/O / external interrupt 0 / CCP1 PWM output |
| Pin 12 | RB1/INT1 — Digital I/O / external interrupt 1 |
| Pin 13 | RB2/CCP2 — Digital I/O / CCP2 PWM output |
| Pin 14 | RB3/C2OUT — Digital I/O / Comparator 2 output |
| Pin 15 | RB4 — Digital I/O |
| Pin 16 | RB5/P1A — Digital I/O / Enhanced PWM output channel A |
| Pin 17 | RB6/P1B/ICSPCLK — Digital I/O / Enhanced PWM output B / ICSP clock |
| Pin 18 | RB7/P1C/ICSPDAT — Digital I/O / Enhanced PWM output C / ICSP data |
Typical Applications
PIC18F1330-E/SO is suitable for 6 applications: BLDC and DC Motor Control, LED Lighting and Color Control, Industrial Sensor Signal Conditioning, Small Appliance Control Boards, Battery-Powered Sensor Nodes, Switch-Mode Power Supply (SMPS) Digital Control.
BLDC and DC Motor Control
The PIC18F1330-E/SO fits small-form-factor BLDC and brushed DC motor drives because its integrated 10-bit enhanced PWM module provides hardware generation of complementary or edge-aligned PWM signals directly to gate drivers, eliminating the need for an external PWM controller IC. With 8KB of Enhanced Flash it can store lookup tables for sinusoidal commutation, PI speed-control loops, and start-up ramp profiles. The 25MHz/10 MIPS CPU closes the ADC-to-PWM control loop in well under 100 microseconds, supporting up to several kHz of switching frequency while leaving headroom for housekeeping tasks. Two on-chip analog comparators can implement hardware overcurrent protection that bypasses software latency, and the 10-bit A/D samples back-EMF or shunt current synchronously with the PWM cycle. The wide 2.0V-5.5V supply range lets the MCU share the motor bus, and nanoWatt Technology modes reduce idle current in standby. The 18-SOIC footprint fits in tight PCB areas inside appliances and consumer power tools.
Recommended
LED Lighting and Color Control
Architectural and decorative LED lighting designs benefit from the PIC18F1330-E/SO's 10-bit PWM channels, which drive high-brightness LED strings via constant-current sinks with 1024-step dimming resolution. The 8-bit core can run DMX-512 or DALI receive firmware at low CPU cost, while the 8KB Flash accommodates multi-scene presets and fade tables. The 10-bit A/D monitors LED string current and temperature via NTC thermistors for thermal foldback, protecting the LEDs without an external MCU. nanoWatt Technology sleep modes drop quiescent current to microamp levels, helping mains-powered lighting controllers meet ENERGY STAR standby budgets. The 18-SOIC package fits inside a small fixture enclosure, and the E temperature grade supports hot outdoor fixtures where ambient may exceed 70C inside the housing.
Recommended
Industrial Sensor Signal Conditioning
The PIC18F1330-E/SO's 10-bit A/D converter combined with the 10-bit PWM and analog comparators makes it a compact digital replacement for legacy analog sensor-signal-conditioning circuits. It digitizes inputs from thermocouples, RTDs, strain gauges, or 4-20 mA loops, applies linearization in firmware, and outputs a calibrated 4-20 mA or 0-10V signal via PWM plus a precision output filter. The 256-byte EEPROM stores per-unit calibration coefficients, while the E temperature grade ensures accuracy across the -40C to +125C industrial range. Two analog comparators provide hardware alarm thresholds that force a deterministic safe-state output even if the firmware locks up. With 8KB Flash the MCU can host MODBUS or IO-Link slave protocol stacks alongside the signal-processing code, eliminating a separate communications ASIC.
Recommended
Small Appliance Control Boards
Coffee machines, kitchen robots, washing machines, and similar small appliances use the PIC18F1330-E/SO as the single-chip controller that reads user keypads, drives pumps and triac-controlled heaters, and times washing or brewing cycles. The 16 I/O pins in the 18-SOIC package are sufficient for a 4x4 matrix keypad, an LCD or LED display, two triac optocoupler isolators, and a buzzer. The PWM module can be firmware-reconfigured to drive a low-side MOSFET for variable-speed pumps or to implement zero-cross switching for quiet heater control. ICSP allows the appliance manufacturer to apply firmware updates on the production line and to field-upgrade devices via a service connector, all without removing the MCU. The 8KB Flash holds both the operating system and the user-customizable cycle library, and the E temperature grade suits the hot, humid interior of a dishwasher or dryer.
Recommended
Battery-Powered Sensor Nodes
The PIC18F1330-E/SO extends battery life in remote sensor nodes thanks to its nanoWatt Technology power-management modes that drop current consumption to microamp levels during sleep. A typical duty cycle of 1% awake (sensor read, transmit, return to sleep) lets a 2x AA cell pack power the node for years. The internal 8 MHz oscillator eliminates an external crystal, shrinking the BOM to MCU plus a single decoupling capacitor and a wireless module such as the Xbee or LoRa. The 10-bit A/D reads thermistor or battery-divider voltage directly, while the wide 2.0V-5.5V supply accepts unregulated battery voltages directly. The E temperature grade ensures operation in outdoor enclosures exposed to full seasonal swing.
Recommended
Switch-Mode Power Supply (SMPS) Digital Control
Digital control loops for non-isolated DC-DC converters or LED drivers can run on the PIC18F1330-E/SO, replacing an analog UC3842-style controller with a programmable digital equivalent. The 10-bit A/D samples the output voltage through a resistive divider, the firmware computes a PID or peak-current-mode duty cycle, and the enhanced PWM module drives a low-side MOSFET gate. 25MHz / 10 MIPS throughput closes the loop in tens of microseconds, supporting switching frequencies up to several hundred kHz. The dual analog comparators provide cycle-by-cycle current limit and overvoltage protection that bypasses firmware latency, ensuring deterministic fault response. Firmware upgrades via ICSP allow designers to ship one part number and tune compensation networks in firmware rather than redesigning analog components.
Recommended
Recommended Products Summary
Engineering reference data for PIC18F1330-E/SO — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC18F1330-I/SO | PIC18F1230-I/SO | PIC18F1320-I/SO | PIC18F1230-E/SO |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 18-SOIC | 18-SOIC (same) | 18-SOIC (same) | 18-SOIC (same) | 18-SOIC (same) |
| Program Memory (Flash) | 8 KB | 8 KB | 4 KB (-50%) | 8 KB | 4 KB (-50%) |
| RAM | 256 B | 256 B | 256 B | 256 B | 256 B |
| Maximum CPU Frequency | 25 MHz (10 MIPS) | 25 MHz (10 MIPS) | 25 MHz (10 MIPS) | 20 MHz (10 MIPS) | 25 MHz (10 MIPS) |
| Supply 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 |
| Temperature Range | -40 C to +125 C (E) | -40 C to +85 C (I) | -40 C to +85 C (I) | -40 C to +85 C (I) | -40 C to +125 C (E) |
| Enhanced PWM | 10-bit, multi-output | 10-bit, multi-output (same) | 10-bit, multi-output (same) | 10-bit (older CCP-based) | 10-bit, multi-output (same) |
| A/D Converter | 10-bit, multi-channel | 10-bit, multi-channel (same) | 10-bit, multi-channel (same) | 10-bit | 10-bit, multi-channel (same) |
Key Differentiators
- Extended industrial temperature grade (-40C to +125C) in the same SOIC-18 footprint (vs PIC18F1330-I/SO)
- Doubles program memory vs the smaller sibling at the same price tier (vs PIC18F1230-I/SO)
- Enhanced 10-bit PWM module with hardware dead-band and fault inputs (vs PIC18F1320-I/SO)
Design Notes
Place a 100 nF ceramic decoupling capacitor within 5 mm of the VDD pin and a bulk 10 uF capacitor nearby to suppress switching transients from the MCU and PWM-driven loads. For battery-powered designs operating down to 2.0V, ensure the bulk capacitor's ESR stays low at the lowest operating voltage so the brown-out detector does not trip during PWM-induced load steps.
Route the ICSP lines RB6 (ICSPCLK) and RB7 (ICSPDAT) directly to a 2x3 or 1x6 header with no series resistors between the MCU and the connector, otherwise on-chip debug and field firmware updates will fail. Keep the MCLR pin trace short and provide the recommended 10 kohm pull-up to VDD with a 100 nF capacitor to ground for a clean reset slope during power-on.
The 'E' suffix denotes the extended -40C to +125C grade; using this part in a design that only needs -40C to +85C is unnecessarily expensive. Confirm that unused I/O pins are configured as outputs (not left floating) and the watchdog timer is enabled in firmware for unattended industrial installations, per the PIC18F1230/1330 datasheet reset and configuration guidance.
Estimated: at 25 MHz with 10 MIPS throughput, toggling a pin in 4 cycles (100 ns rise/fall time) produces edge currents of ~20 mA on a 5V supply. Use a ground plane under the MCU, keep analog traces (AN0-AN4) short and away from PWM outputs, and add a small RC filter on the VREF+ pin if the A/D result shows noise.
The PIC18F1330-E/SO in the 18-SOIC package dissipates well under 100 mW in typical 8-bit MCU duty cycles, so no heatsink is required. For continuous full-CPU (40 mA core + 20 mA I/O load) operation in a sealed enclosure above 70C ambient, verify junction temperature using Microchip's thermal resistance data (theta_JA around 80 C/W for 18-SOIC) to stay below the +125C maximum.
Compliance Information
RoHS compliance per Microchip product page. AEC-Q100 not applicable; for automotive safety-critical use consult Microchip's PIC18F automotive-grade portfolio separately. Halogen-free status not explicitly stated in the verified data and marked unknown.
