PIC16LF18345-E/GZ - 8-Bit 32MHz 14KB Flash XLP MCU | Microchip
MPN: PIC16LF18345-E/GZ ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.51 | $1.51 |
| 10 | $1.36 | $13.60 |
| 100 | $1.2 | $120.00 |
| 500 | $1.05 | $525.00 |
| 1,000 | $0.91 | $910.00 |
PIC16LF18345-E/GZ Overview
An 8-bit microcontroller (MCU) is a single-chip computer built around an 8-bit data path, optimized for deterministic real-time control, low standby power, and low system cost. PIC microcontrollers sit within the broader hierarchy: 8-bit MCU -> microcontroller -> embedded processor -> semiconductor IC. The PIC16(L)F183xx family adds Core Independent Peripherals (CIPs) such as CLC, CWG, NCO, DSM, and Configurable Logic, alongside the Peripheral Pin Select (PPS) routing engine that lets digital peripherals be remapped to almost any I/O pin.
Key features of the PIC16LF18345 include a 10-bit ADC with computation (ADC2), a 5-bit DAC, two 8-bit timers and three CCP modules supporting PWM, two I2C/SPI modules, an EUSART, up to 18 I/O pins, and Microchip's eXtreme Low Power (XLP) technology that drops the device into the nanoWatt sleep range. The integrated 32MHz internal oscillator eliminates an external crystal in most designs, reducing BOM and PCB area.
Architecturally, the PIC16LF18345 uses Microchip's enhanced mid-range 8-bit core with a hardware stack, single-cycle instruction execution, and a 14-bit instruction word. The CIP block performs logic, signal conditioning, and waveform generation in hardware without CPU intervention, freeing the core for application code and dramatically improving real-time determinism and energy efficiency.
Typical applications include battery-powered IoT sensor nodes, wearable health monitors, low-power wireless remote controls, energy-harvesting edge nodes, automotive body and lighting modules, and small home appliances where XLP standby current and on-chip CIPs reduce external component count. Industrial sensor transmitters, electronic shelf labels, and LoRa / sub-GHz companion-MCU designs also benefit from the PIC16LF18345's PPS flexibility.
When designing with this part, pay attention to the UQFN-20 exposed pad - it must be soldered to the ground pad for both thermal and electrical performance. Decouple VDD with a 1uF ceramic plus a 100nF parallel cap, place them within 3mm of the VDD pin, and reserve the MCLR pin with its typical 10k pull-up unless using the internal weak pull-up configuration.
Drop-in alternatives for PIC16LF18345-E/GZ — 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 PIC16LF18345-E/GZ (same form factor and footprint) — differing in Package, ADC, Core Architecture, Core Independent Peripherals, Program Memory (Flash).
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16LF18344-I/GZ
✅ Drop-In✓ In Stock
$1.3 / Unit
View Datasheet →PIC16F18345-E/GZ
✅ Drop-In✓ In Stock
$0.83 / Unit
View Datasheet →PIC16F15345-E/GZ
✅ Drop-In✓ In Stock
$1.45 / Unit
View Datasheet →PIC16LF18346-I/GZ
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
PIC16LF18325-E/JQVAO
✅ Drop-In✓ In Stock
$1.95 / Unit
View Datasheet →PIC16LF18345-E/GZ Maximum Ratings & Electrical Characteristics
| Core Architecture | 8-bit PIC enhanced mid-range |
| Program Memory (Flash) | 14 KB (8K x 14 words) |
| Data SRAM | 1 KB |
| Data EEPROM | 256 B |
| Maximum CPU Speed | 32 MHz |
| Supply Voltage (VDD) | 1.8 V to 3.6 V |
| Operating Temperature | -40 C to +125 C (E = extended industrial) |
| I/O Pins | 18 |
| ADC | 10-bit with Computation (ADC2) |
| DAC | 5-bit |
| Timers | 2 x 8-bit, 2 x 16-bit (via CCP/CCPTMR) |
| CCP Modules | 3 (capture / compare / PWM) |
| Communication Peripherals | 2 x I2C/SPI, 1 x EUSART |
| Core Independent Peripherals | CLC, CWG, NCO, DSM, CLC, Configurable Logic |
| Peripheral Pin Select (PPS) | Yes |
| Package | 20-pin UQFN (4x4 mm) with Exposed Pad |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
| MSL Level | 1 |
PIC16LF18345-E/GZ Pin Configuration
| Pin 1 | RA0 — Bidirectional I/O / analog input |
| Pin 2 | RA1 — Bidirectional I/O / analog input |
| Pin 3 | RA2 — Bidirectional I/O / analog input |
| Pin 4 | RA3 — Bidirectional I/O / analog input |
| Pin 5 | RA4 — Bidirectional I/O / analog input |
| Pin 6 | RA5 — Bidirectional I/O / analog input |
| Pin 7 | VSS — Ground |
| Pin 8 | RA6 — Bidirectional I/O / analog input |
| Pin 9 | RA7 — Bidirectional I/O / analog input |
| Pin 10 | RB0 — Bidirectional I/O / analog input |
| Pin 11 | RB1 — Bidirectional I/O / analog input |
| Pin 12 | RB2 — Bidirectional I/O / analog input |
| Pin 13 | RB3 — Bidirectional I/O / analog input |
| Pin 14 | RB4 — Bidirectional I/O / analog input |
| Pin 15 | RB5 — Bidirectional I/O / analog input |
| Pin 16 | RB6 — Bidirectional I/O / ICSPCLK |
| Pin 17 | RB7 — Bidirectional I/O / ICSPDAT |
| Pin 18 | VDD — Positive supply voltage (1.8V-3.6V) |
| Pin 19 | MCLR — Master Clear / reset input (active-low) |
| Pin 20 | RC0 — Bidirectional I/O / analog input |
Typical Applications
PIC16LF18345-E/GZ is suitable for 6 applications: Battery-Powered IoT Sensor Node, Wearable Health Monitor, Low-Power Wireless Remote Control, Energy-Harvesting Edge Sensor, Automotive Body and Lighting Module, Small Home Appliance Control.
Battery-Powered IoT Sensor Node
The PIC16LF18345-E/GZ is a strong fit for battery-powered IoT sensor nodes because its LF silicon delivers nanoWatt-range XLP sleep current and the on-chip 10-bit ADC2 with computation performs oversampling and threshold detection without waking the CPU. The 32MHz HFINTOSC eliminates an external crystal, reducing BOM and standby drain. With 1.8V-3.6V VDD, it runs directly from a single CR2032 or two AA cells, while the Peripheral Pin Select (PPS) routes I2C/SPI sensor interfaces to any spare pin, simplifying PCB layout in compact sensor modules.
Recommended
Wearable Health Monitor
Wearable health monitors benefit from the PIC16LF18345-E/GZ's XLP sleep modes (down to nanoWatt range) and 1.8V-3.6V operation that runs directly from small LiPo or coin-cell batteries. The on-chip 5-bit DAC and 10-bit ADC2 with computation can drive bio-impedance or pulse-oximetry front-ends, while the three CCP/PWM channels drive haptic feedback motors and LED indicators. The UQFN-20 (4x4 mm) small footprint fits wristbands and patches, and PPS lets designers remap I2C sensor and SPI display buses without PCB rework when the BOM changes.
Recommended
Low-Power Wireless Remote Control
For low-power wireless remote controls, the PIC16LF18345-E/GZ combines sub-uA sleep current with the CWG (Complementary Waveform Generator) and NCO (Numerically Controlled Oscillator) CIPs that can synthesize 38kHz IR carrier or sub-GHz OOK modulation in hardware without CPU intervention. The 32MHz core handles button-scan debouncing, RF protocol encoding, and battery-ADC monitoring, while the LF silicon extends coin-cell life well beyond typical RF remote duty cycles. PPS simplifies routing of the IR LED driver and RF module enable signals to available I/O pins.
Recommended
Energy-Harvesting Edge Sensor
Energy-harvesting edge sensor nodes leverage the PIC16LF18345-E/GZ's nanoWatt XLP sleep and 1.8V minimum VDD to operate directly from small solar cells, thermal harvesters, or vibration rectennas without an intermediate boost regulator in many cases. The Core Independent Peripherals (CLC, CWG, DSM) wake the device in response to sensor events without CPU wake-up, dramatically reducing average current. The 10-bit ADC2 with computation performs threshold detection on harvested energy levels, and PPS lets the same firmware target different sensor interfaces with zero PCB changes.
Recommended
Automotive Body and Lighting Module
Automotive body and lighting modules use the PIC16LF18345-E/GZ (extended -40C to +125C grade) for interior LED lighting, ambient color mixing via PWM, and CAN/LIN node control. The three CCP modules produce complementary PWM with hardware dead-band from the CWG, ideal for half-bridge LED drivers and small motor control. While not AEC-Q100 qualified at this part number, the extended-temperature E suffix and the 1.8V-3.6V operating range suit under-hood accessory electronics. PIC16LF18345-E/GZVAO is the AEC-Q100 equivalent variant for production automotive use.
Recommended
Small Home Appliance Control
Small home appliances such as coffee makers, blenders, air purifiers, and smart thermostats use the PIC16LF18345-E/GZ as a low-cost main controller. The three CCP/PWM channels drive TRIACs, MOSFET gates, and brushless DC motors, while the CLC and CWG peripherals handle zero-cross detection and synchronous rectification in hardware, offloading the 32MHz core. The 14KB Flash comfortably fits user-interface state machines plus a Modbus or BLE bootloader, and the UQFN-20 (4x4 mm) package fits inside small PCB enclosures.
Recommended
Recommended Products Summary
Engineering reference data for PIC16LF18345-E/GZ — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16LF18344-I/GZ | PIC16F18345-E/GZ | PIC16F15345-E/GZ |
|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 20-pin UQFN (4x4) | 20-pin UQFN (4x4) - same | 20-pin UQFN (4x4) - same | 20-pin UQFN (4x4) - same |
| Flash / SRAM | 14 KB / 1 KB | 7 KB / 512 B (-50%) | 14 KB / 1 KB (same) | 14 KB / 1 KB (same) |
| Operating Voltage | 1.8 V to 3.6 V (LF) | 1.8 V to 3.6 V (LF) | 1.8 V to 5.5 V (F) | 1.8 V to 5.5 V (F) |
| Max CPU Speed | 32 MHz | 32 MHz | 32 MHz | 32 MHz |
| I/O Pins | 18 | 18 | 18 | 18 |
| ADC / DAC | 10-bit ADC2 / 5-bit DAC | 10-bit ADC2 / 5-bit DAC | 10-bit ADC2 / 5-bit DAC | 10-bit ADC2 / 5-bit DAC |
| Core Independent Peripherals | CLC, CWG, NCO, DSM, CCP | CLC, CWG, NCO, DSM, CCP | CLC, CWG, NCO, DSM, CCP | CLC, CWG, NCO, DSM, CCP (improved) |
| Unit Price (qty 1, approx) | $1.51 | $1.30 | $1.55 | $1.45 |
Key Differentiators
- Larger Flash and SRAM at the same price tier as PIC16LF18344-I/GZ (vs PIC16LF18344-I/GZ)
- Lower-voltage optimized silicon for battery applications (vs PIC16F18345-E/GZ)
- Mature CIP peripheral set with PPS flexibility (vs PIC16F15345-E/GZ)
Design Notes
Decouple VDD with a 1uF X7R ceramic in parallel with a 100nF NP0/C0G placed within 3mm of the VDD pin (pin 18) and the exposed thermal pad tied to VSS. For battery-powered designs, leverage the PIC16LF18345's nanoWatt XLP sleep modes by configuring the CPU to sleep between ADC2 interrupts; this typically reduces average current to the 1-5uA range for duty-cycled sensor nodes. Avoid switching I/O pins faster than needed - slower edges cut transient current peaks and reduce EMI in the 32MHz HFINTOSC band.
The 20-pin UQFN (4x4 mm) package dissipates heat primarily through the exposed pad (EP) on the bottom. The EP MUST be soldered to a ground copper pour of at least 25mm^2 on the top layer plus thermal vias to inner/inner-bottom ground planes to keep junction temperature within the -40C to +125C extended industrial range. At 32MHz active and 3.6V VDD, typical power dissipation is 15-25mW, well within the package's thermal limits, but a missing EP solder connection can raise theta_JA above 80 C/W.
Two common pitfalls: (1) forgetting to configure PPS for digital peripherals - SPI/I2C/UART default pins must be remapped in firmware or the peripherals will not drive the expected I/O; (2) failing to disable the JTAG pins on ports that share them, which leaves the pins floating until firmware clears the JTAGEN bit. Always run Microchip's MPLAB X IDE with the latest XC8 compiler and PIC16LF18345 Device Family Pack (DFP) to avoid register-name mismatches.
Route the ICSP clock and data lines (RB6/RB7) as short, parallel traces to the programming header with no series resistors greater than 100 ohms, otherwise ICSP programming may fail at low VDD. Keep the MCLR pull-up (typically 10k) close to the IC and add a 100nF cap to ground for ESD immunity. The HFINTOSC is sufficient for most designs, but if you need a precision UART baud rate, plan for an external 32.768kHz crystal on SOSC pins (RA4/RA5) instead of using HFINTOSC trimming.
Compliance Information
RoHS and REACH compliant per Microchip product page. AEC-Q100 qualified in the -VAO variant only; standard PIC16LF18345-E/GZ is not automotive qualified.
