PIC16F18345-I/P - 8-Bit 32MHz XLP MCU 14KB Flash | Microchip
MPN: PIC16F18345-I/P ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $2.35 | $2.35 |
| 10 | $2.12 | $21.20 |
| 100 | $1.88 | $188.00 |
| 500 | $1.72 | $860.00 |
| 1,000 | $1.55 | $1,550.00 |
PIC16F18345-I/P Overview
An 8-bit microcontroller (MCU) is a single-chip processor with an 8-bit data path, integrating CPU, Flash, RAM, EEPROM, and peripherals on one die. Within the PIC hierarchy: PIC16F18345 sits under PIC16 -> 8-bit PIC microcontrollers -> microcontrollers -> microcontrollers and processors -> semiconductors. PIC MCUs are widely used in cost-sensitive embedded designs where deterministic behavior, low power, and rich analog integration matter more than raw compute.
Key differentiating features include the Peripheral Pin Select (PPS) mapper that remaps digital peripheral I/O to user-selected pins, the Functional Safety (FuSa) classification for IEC 61508 SIL-capable applications, and four 16-bit timers with hardware PWM. The 12-bit ADC with Computation automates averaging, oversampling, and threshold comparison without CPU intervention, offloading real-time signal processing.
Architecturally, the device uses a RISC-based PIC16 core with a 32 MHz internal oscillator and a 31 kHz LFINTOSC for low-power modes. The device operates across -40C to +85C industrial temperature range with on-board debugging via ICD, supporting in-circuit serial programming (ICSP). A rich interrupt controller and 18-level hardware stack simplify real-time firmware design.
Typical applications include IoT sensor nodes, battery-powered instrumentation, automotive body electronics, consumer appliances, and Function Safety (FuSa) industrial control loops. PPS flexibility suits pin-constrained PCB layouts while the 256-byte EEPROM enables nonvolatile parameter storage without external memory.
When designing, place a 100 nF decoupling capacitor on VDD within 3 mm of the pin and add a 10 uF bulk capacitor near the IC. Use ICSP pins (RB6/ICSPDAT, RB7/ICSPCLK) for production programming and route MCLR with a 10 kohm pull-up to VDD.
This page synthesizes distributor pricing, drop-in same-family alternatives, and practical design notes not found in the manufacturer datasheet, helping engineers make sourcing and design decisions faster.
Drop-in alternatives for PIC16F18345-I/P — 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 PIC16F18345-I/P (same form factor and footprint) — differing in Package, ADC, Program Memory (Flash), I/O Pins, Communication.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16F18345-E/P
✅ Drop-In✓ In Stock
$1.21 / Unit
View Datasheet →PIC16F18344-I/SS
✅ Drop-In✓ In Stock
$0.86 / Unit
View Datasheet →PIC16F18325-I/P
✅ Drop-In ⚠️ 参数待验证📋 Reference alternative (not in catalog)
PIC16F18313-I/P
✅ Drop-In✓ In Stock
$0.79 / Unit
View Datasheet →PIC16F1829-I/P
✅ Drop-In ⚠️ 参数待验证✓ In Stock
$1.25 / Unit
View Datasheet →PIC16F1825-I/P
✅ Drop-In ⚠️ 参数待验证✓ In Stock
$1.23 / Unit
View Datasheet →PIC16F18345-I/P Maximum Ratings & Electrical Characteristics
| Core | PIC16 8-bit RISC |
| Program Memory (Flash) | 14 KB (8K x 14 words) |
| Data RAM | 1 KB |
| EEPROM | 256 bytes |
| Maximum CPU Speed | 32 MHz |
| Operating Voltage Range | 2.3 V to 5.5 V |
| I/O Pins | 18 |
| ADC | 12-bit with Computation (ADC^2) |
| DAC | 10-bit |
| Comparators | 2 |
| PWM Channels | 4 (16-bit) |
| Timers | 4 x 16-bit + 2 x 8-bit |
| Communication | I2C, SPI, EUSART, RS-232, RS-485 |
| Package | 20-pin PDIP (300 mil) |
| Operating Temperature | -40C to +85C (Industrial) |
| Peripheral Pin Select (PPS) | Yes |
| Functional Safety (FuSa) | Yes - IEC 61508 SIL-capable |
| RoHS Status | Compliant |
| MSL Level | 1 (unlimited) |
| Programming/Debug | ICSP (2-wire) via RB6/RB7 |
PIC16F18345-I/P Pin Configuration
| Pin 1 | VDD — Positive power supply |
| Pin 2 | RA5 — Digital I/O / analog input / PWM |
| Pin 3 | RA4 — Digital I/O / analog input |
| Pin 4 | MCLR/VPP/RA3 — Reset (active low) / programming voltage / digital I/O |
| Pin 5 | RC5 — Digital I/O / analog input |
| Pin 6 | RC4 — Digital I/O / analog input |
| Pin 7 | RC3 — Digital I/O / analog input / SCL |
| Pin 8 | RC2 — Digital I/O / analog input |
| Pin 9 | RC1 — Digital I/O / analog input / SDA |
| Pin 10 | RC0 — Digital I/O / analog input |
| Pin 11 | RA2 — Digital I/O / analog input / DAC output |
| Pin 12 | RA1 — Digital I/O / analog input / DAC reference |
| Pin 13 | RA0 — Digital I/O / analog input |
| Pin 14 | VSS — Ground reference |
| Pin 15 | RA7 — Digital I/O / oscillator input |
| Pin 16 | RA6 — Digital I/O / oscillator output |
| Pin 17 | RC7 — Digital I/O / analog input |
| Pin 18 | RC6 — Digital I/O / analog input |
| Pin 19 | RB7 — Digital I/O / ICSPCLK (programming clock) |
| Pin 20 | RB6 — Digital I/O / ICSPDAT (programming data) |
Typical Applications
PIC16F18345-I/P is suitable for 7 applications: IoT Sensor Nodes, Battery-Powered Instrumentation, Automotive Body Electronics, Consumer Appliance Control, Functional Safety (FuSa) Industrial Control, LED Lighting Controllers, Smart Home Sensor Hubs.
IoT Sensor Nodes
The PIC16F18345-I/P fits IoT sensor nodes due to its 32 MHz PIC16 core, 14 KB Flash, 12-bit ADC^2 with built-in averaging, and XLP sub-1 uA sleep current. With PPS the same firmware scales across multiple sensor daughterboards. Place between a sensor and a LoRa/BLE module; ADC^2 hardware oversampling improves measurement SNR while the MCU sleeps at <1 uA, enabling multi-year coin-cell battery life in remote deployments.
Recommended
Battery-Powered Instrumentation
The PIC16F18345-I/P is suited for handheld meters and battery-powered instruments thanks to its 2.3V-5.5V operating range, XLP sleep currents, and 256-byte EEPROM for nonvolatile calibration storage. ADC^2 automates sensor linearization, offloading the CPU during data acquisition. Power is dominated by the sensor, not the MCU, so two AA batteries can power a continuous-logging instrument for 6-12 months without replacement.
Recommended
Automotive Body Electronics
The PIC16F18345-I/P works in body-control modules, lighting controllers, and HVAC auxiliaries because its industrial -40C to +85C range covers most cabin environments, and PIC MCUs are AEC-Q100-qualified in the same family. The 4 PWM channels drive LED dimmers or small motors; the EUSART handles LIN bus; ADC^2 reads thermistor/resistive sensors. For under-hood applications, upgrade to PIC16F18345-E/P (extended temperature) on the same footprint.
Recommended
Consumer Appliance Control
The PIC16F18345-I/P is ideal for white-goods and small-appliance controllers (coffee makers, blenders, washing-machine user interfaces) where 14 KB Flash accommodates rich state machines and the 4 PWM channels drive loads like pumps, valves, or heaters. The Peripheral Pin Select (PPS) allows layout flexibility across product variants. ADC^2 reads multiple analog sensors (temperature, water level, motor current) while the MCU stays in low-power Idle during standby.
Recommended
Functional Safety (FuSa) Industrial Control
The PIC16F18345-I/P suits IEC 61508 SIL-capable industrial loops because Microchip classifies the PIC16F18345 in the Functional Safety (FuSa) family with FMEDA reports and safety manuals available. Hardware diagnostics include windowed watchdog, oscillator fail detect, and ADC^2 self-test. Use in safety interlocks, sensor aggregation modules, and redundant shutdown paths where documentation matters as much as silicon.
Recommended
LED Lighting Controllers
The PIC16F18345-I/P drives multi-channel LED lighting because it integrates 4 hardware PWM channels with 16-bit resolution, supports I2C for digital LED drivers like PCA9685 expansion, and runs from 2.3V-5.5V for direct Li-ion or USB bus power. ADC^2 reads ambient light sensors for closed-loop dimming, while the CLC (Configurable Logic Cell) implements hardware PWM blanking without CPU overhead, enabling flicker-free dimming to 0.1%.
Recommended
Smart Home Sensor Hubs
The PIC16F18345-I/P works in low-cost smart-home sensor hubs (PIR, door/window, water leak) thanks to sub-1 uA XLP sleep, ADC^2 with auto-threshold for digital event outputs, and battery-friendly 32 kHz LFINTOSC operation. PPS lets the same PCB support PIR, magnetic-reed, and water-leak variants by remapping interrupts. With a sub-GHz or BLE companion module, the node wakes on event, transmits, and returns to sleep for multi-year battery life.
Recommended
Recommended Products Summary
Engineering reference data for PIC16F18345-I/P — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16F18345-E/P | PIC16F18344-I/SS | PIC16F18325-I/P | PIC16F18313-I/P | PIC16F1829-I/P | PIC16F1825-I/P |
|---|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 20-pin PDIP | 20-pin PDIP | 20-pin PDIP | 20-pin PDIP | 20-pin PDIP | 20-pin PDIP | 20-pin PDIP |
| Flash Memory | 14 KB | 14 KB | 14 KB | 14 KB | 7 KB | 14 KB | 14 KB |
| RAM | 1 KB | 1 KB | 1 KB | 1 KB | 256 B | 1 KB | 1 KB |
| EEPROM | 256 B | 256 B | 256 B | 256 B | 256 B | 256 B | 256 B |
| Max Frequency | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz |
| ADC | 12-bit ADC^2 | 12-bit ADC^2 | 10-bit ADC | 12-bit ADC^2 | 10-bit ADC | 10-bit ADC | 10-bit ADC |
| Functional Safety (FuSa) | Yes (IEC 61508) | Yes (IEC 61508) | No | No | No | No | No |
| Operating Temperature | -40C to +85C | -40C to +125C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C |
| Unit Price (qty 1) | $2.35 | $2.60 | $2.10 | $2.05 | $1.85 | $2.40 | $2.20 |
Key Differentiators
- Functional Safety (FuSa) classification for IEC 61508 SIL (vs PIC16F18344-I/SS)
- ADC^2 hardware computation offload (vs PIC16F1825-I/P)
- Extended temperature option in same package (vs PIC16F18345-E/P)
- Memory density advantage (vs PIC16F18313-I/P)
Design Notes
Place a 100 nF ceramic decoupling capacitor within 3 mm of each VDD pin (pin 1 and pin 20) and add a single 10 uF bulk capacitor near the MCU. For battery-powered designs, route the MCLR pull-up through a 10 kohm resistor to VDD and add a 100 nF cap on MCLR for noise immunity. The XLP Sleep mode draws less than 1 uA with LFINTOSC, suitable for coin-cell applications.
Route ICSP lines (RB6/ICSPDAT and RB7/ICSPCLK) as short, parallel traces to a 2x3 0.1 inch header for in-circuit serial programming. Avoid routing high-frequency signals across the ICSP lines to prevent programming glitches. Place a 10 kohm pull-up on MCLR. Reserve a footprint for a 4-pin or 5-pin ICD header if production debugging is expected.
Do not enable the internal HFINTOSC at full 32 MHz without verifying VDD is above 2.7V - at lower voltages the device can become unstable. Do not skip the configuration bits (CONFIG1/2/3/4) in firmware - leaving them blanked will result in default MCLR-disabled behavior and the MCU will appear dead. Always use a fresh XC8 compiler version compatible with PIC16F18345 (1.40 or later).
For ADC^2 measurements above 12-bit effective resolution, add a 100 nF + 10 uF RC network on the analog VDD rail (separate from digital VDD via ferrite bead). Use shortest possible traces for analog inputs and route digital signals away. Enable ADC^2 hardware oversampling for noisy environments - the integrated averaging eliminates most sensor noise without CPU overhead.
Compliance Information
RoHS and REACH compliant per Microchip product page. The PIC16F18345 family is IEC 61508 SIL-capable (FuSa) but not AEC-Q100 automotive certified at the PIC16F18345-I/P industrial temperature grade - for AEC-Q100 applications, consult Microchip for AEC-Q100-qualified variants.
