PIC16LF18345-E/P - 8-Bit 32MHz XLP MCU 14KB Flash 20-PDIP | Microchip
MPN: PIC16LF18345-E/P ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.36 | $1.36 |
| 10 | $1.2 | $12.00 |
| 100 | $1.02 | $102.00 |
| 500 | $0.89 | $445.00 |
| 1,000 | $0.8 | $800.00 |
| 3,000 | $0.74 | $2,220.00 |
PIC16LF18345-E/P Overview
A microcontroller (MCU) is a single-chip computer containing a CPU core, program and data memory, I/O peripherals, and often analog blocks such as ADC/DAC and comparators. In the broader taxonomy, the PIC16LF18345 belongs to the 8-bit PIC16 family within the PIC microcontroller hierarchy, sitting under Microchip's PIC line, which in turn falls under the broader category of embedded microcontrollers (sub-class of microprocessors). 8-bit MCUs like this one typically target cost-sensitive, low-power applications where deterministic real-time behavior and simple peripheral integration outweigh raw computational throughput.
Key features include Peripheral Pin Select (PPS) for flexible pin-function remapping, an on-chip temperature indicator, multiple communication peripherals (EUSART, I2C, SPI), and hardware CLC, NCO, and PWM peripherals that operate independently of the CPU. The XLP technology includes IDLE/DOZE power-saving modes and ultra-low-power sleep currents down to ~30 nA typical with full RAM retention, allowing battery-powered designs to run for years on a single cell. The integrated 10-bit ADC supports up to 9 channels with hardware capacitive voltage division and is paired with a 5-bit/8-bit DAC for analog stimulus generation.
Architecturally, the PIC16LF18345 uses a RISC-based enhanced mid-range core with a hardware multiplier, 49 instructions, and a single-cycle instruction decoder at 32MHz. The CIPs (CLC, NCO, PWM, COG, and CRC) let designers implement state machines, waveform generation, and communication glue logic in silicon without CPU intervention, reducing code size and improving deterministic latency. Internal oscillator options include a 32MHz HFINTOSC with PLL and a 31kHz LFINTOSC, eliminating external timing components in many designs.
Typical applications include low-power IoT sensor nodes, battery-powered remote controls, consumer appliances, industrial sensor conditioning, automotive body and lighting controllers (sub-system level), and portable medical devices. The wide -40C to +125C operating range and XLP modes suit outdoor installations and energy-harvesting designs where quiescent current dominates battery life.
When designing with this MCU, ensure VDDCORE decoupling (0.1uF + 1uF) is placed within a few millimeters of the supply pins, and that unused I/O are configured as outputs low rather than floating to minimize sleep-mode current. Use the PPS feature to route peripherals to convenient pins without redesigning the PCB layout.
This page synthesizes distributor pricing, drop-in same-package alternatives, and practical design notes not found in the manufacturer datasheet alone, giving engineers a one-stop reference for selection, sourcing, and PCB layout decisions.
Drop-in alternatives for PIC16LF18345-E/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 PIC16LF18345-E/P (same form factor and footprint) — differing in Package, ADC, DAC, I/O Pins, Mounting Type.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16F18345-E/P
✅ Drop-In✓ In Stock
$1.21 / Unit
View Datasheet →PIC16LF18345-I/P
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16LF18326-E/P
✅ Drop-In✓ In Stock
$1.02 / Unit
View Datasheet →PIC16LF18325-E/P
✅ Drop-In✓ In Stock
$1.18 / Unit
View Datasheet →PIC16LF18344-E/P
✅ Drop-In✓ In Stock
$0.81 / Unit
View Datasheet →PIC16LF18324-I/P
✅ Drop-In✓ In Stock
$1.05 / Unit
View Datasheet →PIC16LF18345-E/P Maximum Ratings & Electrical Characteristics
| Series | PIC16F (XLP 16F family) |
| Core | 8-bit PIC16 enhanced mid-range RISC |
| Program Memory (Flash) | 14 KB (8K x 14 words) |
| Data RAM | 1 KB |
| EEPROM | 256 bytes |
| Maximum CPU Speed | 32 MHz (8 MIPS) |
| Supply Voltage (VDD) | 1.8 V to 3.6 V |
| Operating Temperature | -40C to +125C (extended grade, -E) |
| ADC | 10-bit, up to 9 channels |
| DAC | 5-bit and 8-bit |
| Package | 20-pin PDIP (P) |
| Mounting Type | Through-Hole |
| I/O Pins | 18 |
| Communication Peripherals | EUSART, I2C, SPI |
| Core Independent Peripherals (CIP) | CLC, NCO, PWM, COG, DSM |
| RoHS Status | Compliant |
| Lead-Free | Yes |
PIC16LF18345-E/P Pin Configuration
| Pin 1 | RA5 — General-purpose I/O with PPS; analog capable |
| Pin 2 | RA4 — General-purpose I/O with PPS |
| Pin 3 | RA3 — General-purpose I/O; MCLR/VPP on some variants |
| Pin 4 | RC5 — General-purpose I/O with PPS |
| Pin 5 | RC4 — General-purpose I/O with PPS |
| Pin 6 | RC3 — General-purpose I/O with PPS; SCL capable |
| Pin 7 | RC2 — General-purpose I/O with PPS |
| Pin 8 | RC1 — General-purpose I/O with PPS |
| Pin 9 | RC0 — General-purpose I/O with PPS |
| Pin 10 | VSS — Ground reference |
| Pin 11 | RA2 — General-purpose I/O with PPS; DAC output capable |
| Pin 12 | RA1 — General-purpose I/O with PPS; ICSPCLK |
| Pin 13 | RA0 — General-purpose I/O with PPS; ICSPDAT |
| Pin 14 | VDD — Positive supply voltage 1.8-3.6V |
| Pin 15 | RA7 — General-purpose I/O with PPS; CLKIN capable |
| Pin 16 | RA6 — General-purpose I/O with PPS; CLKOUT capable |
| Pin 17 | RB7 — General-purpose I/O with PPS |
| Pin 18 | RB6 — General-purpose I/O with PPS; ICD PGC |
| Pin 19 | RB5 — General-purpose I/O with PPS; ICD PGD |
| Pin 20 | RB4 — General-purpose I/O with PPS |
Typical Applications
PIC16LF18345-E/P is suitable for 6 applications: Battery-Powered IoT Sensor Nodes, Industrial Sensor Conditioning and Control, Consumer Appliance Interface Boards, Portable Medical and Wellness Devices, Automotive Body and Lighting Subsystems, Remote Control and IR/RF Transmitter Systems.
Battery-Powered IoT Sensor Nodes
The PIC16LF18345-E/P is well suited for battery-powered wireless sensor nodes operating from a 3.3V or 2xAA supply, where its 1.8-3.6V VDD range covers both alkaline and Li-ion chemistries directly. The XLP nanoWatt sleep currents as low as ~30 nA typical with RAM retention let a node wake briefly to measure and transmit, then return to sleep for years of battery life. The 14KB Flash accommodates small BLE/Zigbee host stacks or LoRaWAN MAC drivers alongside application logic. Peripheral Pin Select (PPS) allows the SPI, I2C, or UART to be routed to any convenient pin, simplifying PCB routing when interfacing multiple sensors. The -40 to +125C extended temperature grade also supports outdoor and industrial deployments without thermal concerns.
Recommended
Industrial Sensor Conditioning and Control
In factory and process-control environments, the PIC16LF18345-E/P handles analog sensor input via its 10-bit ADC (up to 9 channels) and generates actuator drive signals through the CLC, COG, and PWM Core Independent Peripherals (CIPs). The CIPs offload waveform generation, peak current limiting, and watchdog logic into silicon, allowing the CPU to remain in low-power sleep until a threshold event occurs. The 14KB Flash and 1KB RAM easily fit state-machine control code plus calibration tables. The -40 to +125C extended temperature grade and industrial EMI robustness suit motor-control and HVAC subsystems where temperature swings and electrical noise are routine.
Recommended
Consumer Appliance Interface Boards
Home appliances such as washing machines, dishwashers, and ovens integrate the PIC16LF18345-E/P as a user-interface or sub-system controller, where the 20-pin PDIP through-hole package supports hand-soldering and rework during prototyping. The on-chip 5-bit and 8-bit DACs drive analog bias points or LED brightness references, while the comparators and CLCs handle capacitive touch sensing or rotary encoder decoding without CPU load. The wide 1.8-3.6V supply range simplifies integration with 3.3V or 2-cell alkaline battery backup. PPS lets the same firmware image adapt to different PCB revisions by remapping peripheral functions at runtime, shortening development cycles.
Recommended
Portable Medical and Wellness Devices
Battery-powered medical and wellness devices such as glucose meters, pulse oximeters, and wearable patches benefit from the PIC16LF18345-E/P's XLP nanoWatt sleep currents and deterministic interrupt latency. The 14KB Flash and 256-byte EEPROM store patient profiles and calibration constants persistently, while the 10-bit ADC digitizes sensor electrodes at low sample rates with hardware averaging. The extended -40 to +125C temperature grade ensures reliable operation across body-temperature and storage conditions. The 20-pin PDIP package is convenient for low-volume medical device prototyping and pre-clinical engineering builds where through-hole replacement is preferred over fine-pitch SMD rework.
Recommended
Automotive Body and Lighting Subsystems
Although not AEC-Q100 qualified, the PIC16LF18345-E/P with its -40 to +125C extended grade is widely used in non-safety-critical automotive subsystems such as interior lighting, ambient color controllers, key-fob receivers, and accessory body modules. The CIPs (CLC, COG, NCO) generate precise PWM dimming curves and LIN-style message framing in silicon, while the EUSART supports LIN-bus slave communication. The 14KB Flash accommodates LIN stack plus application code. Designers targeting safety-critical applications should select the AEC-Q100 qualified PIC16F18345-E/P variant or migrate to the dsPIC33EP family for higher performance.
Recommended
Remote Control and IR/RF Transmitter Systems
Universal remote controls, RF transmitters, and IR learning devices leverage the PIC16LF18345-E/P's low sleep current (sub-microamp typical) and on-chip CLC plus NCO peripherals to generate precise carrier frequencies and modulation patterns without CPU overhead. The 14KB Flash stores multiple IR code databases (NEC, RC5, RC6) or RF protocol templates. The 1KB RAM buffers transmit sequences, while the 10-bit ADC supports battery voltage monitoring. PPS simplifies PCB layout when routing UART, SPI for external RF modules, and PWM for IR LED drive simultaneously. The 20-pin PDIP is convenient for hobbyist and through-hole debug setups.
Recommended
Recommended Products Summary
Engineering reference data for PIC16LF18345-E/P — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16F18345-E/P | PIC16LF18345-I/P | PIC16LF18326-E/P | PIC16LF18325-E/P | PIC16LF18344-E/P | PIC16LF18324-I/P |
|---|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 20-pin PDIP | 20-pin PDIP (same) | 20-pin PDIP (same) | 20-pin PDIP (same) | 20-pin PDIP (same) | 20-pin PDIP (same) | 20-pin PDIP (same) |
| Flash Memory | 14 KB | 14 KB | 14 KB | 28 KB (+100%) | 14 KB | 7 KB (-50%) | 7 KB (-50%) |
| RAM | 1 KB | 1 KB | 1 KB | 2 KB (+100%) | 1 KB | 1 KB | 1 KB |
| Operating Voltage | 1.8V to 3.6V | 2.3V to 5.5V | 1.8V to 3.6V | 1.8V to 3.6V | 1.8V to 3.6V | 1.8V to 3.6V | 1.8V to 3.6V |
| Operating Temperature | -40C to +125C (Extended) | -40C to +125C | -40C to +85C (Industrial) | -40C to +125C | -40C to +125C | -40C to +125C | -40C to +85C |
| Max CPU Speed | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz |
| ADC Resolution | 10-bit | 10-bit | 10-bit | 10-bit | 10-bit | 10-bit | 10-bit |
Key Differentiators
- Extended -40C to +125C operating temperature grade (vs PIC16LF18345-I/P)
- Low-voltage 1.8-3.6V operation with full 32 MHz performance (vs PIC16F18345-E/P)
- Core Independent Peripherals (CLC, NCO, COG, DSM) operate without CPU (vs PIC16LF1824-E/P)
- 14KB Flash plus PPS allows in-field firmware update with pin remap flexibility (vs PIC16LF18324-I/P)
Design Notes
Estimated: at VDD=3.3V the PIC16LF18345-E/P draws approximately 5-8 mA active at 32 MHz with all peripherals enabled. Place a 0.1uF ceramic decoupling capacitor within 5 mm of pin 14 (VDD), and add a bulk 1-10uF capacitor for transient suppression. Connect pin 10 (VSS) directly to a low-impedance ground plane. For battery applications, use the on-chip FVR and LFINTOSC for sleep-mode operation with currents as low as 30 nA typical.
The 20-pin PDIP footprint has 2.54 mm pin pitch with 0.65 mm square posts. Route ICP/ICSP signals (RA0/ICSPDAT and RA1/ICSPCLK) to a 6-pin header so that MPLAB Xpress or PICkit 4 programmers can attach without flying leads. Keep the ICSP header traces short (<50 mm) and avoid routing them adjacent to high-current switching signals to minimize programming glitches during debug.
Use Peripheral Pin Select (PPS) to remap UART/I2C/SPI functions to convenient pins rather than hard-routing them. Place the external 32.768 kHz watch crystal (optional) close to RB4/RB5 if you need RTCC accuracy, with guard traces to GND. Keep analog inputs (RA0-RA5) short and use a ground plane to minimize ADC noise pickup; route analog and digital signals on different layers when possible.
Common pitfalls: (1) forgetting to set the PPS register before relying on alternate pin functions - the device boots with all peripherals on their default pins. (2) Leaving unused I/O floating increases sleep current by tens of microamps - configure as outputs low or inputs with weak pull-ups. (3) Using CLC output pin as input causes contention - check CLC routing table in datasheet 40001795H section 28.
Compliance Information
RoHS and REACH compliant per DigiKey product attributes. Not AEC-Q100 qualified; for safety-critical automotive select the PIC16F18345-E/P AEC-Q100 qualified variant. Halogen-free status not explicitly stated in the verified web data.
