PIC16LF18345T-I/SSVAO - 8-Bit XLP MCU 32MHz 14KB Flash SSOP-20 | Microchip
MPN: PIC16LF18345T-I/SSVAO ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.65 | $1.65 |
| 10 | $1.49 | $14.90 |
| 100 | $1.32 | $132.00 |
| 500 | $1.18 | $590.00 |
| 1,000 | $1.05 | $1,050.00 |
PIC16LF18345T-I/SSVAO Overview
An 8-bit PIC microcontroller (MCU) is a self-contained computing subsystem that integrates a CPU, non-volatile program memory, working RAM, data EEPROM, and a rich set of analog and digital peripherals onto a single CMOS die. PIC MCUs sit in the broader hierarchy of microcontroller -> embedded processor -> semiconductor IC, and the 'LF' prefix in this part designates the low-voltage (1.8V-3.6V) variant of the PIC16F family. The XLP designation signals that the silicon implements deep-sleep and nanoWatt technology currents that compete with the lowest-power 8-bit cores on the market.
Key features of this part include a 10-bit ADC with up to 17 channels, two 8-bit timers plus a 16-bit timer, Configurable Logic Cells, Complementary Waveform Generators, multiple PWM/CCP modules, and Microchip's Peripheral Pin Select (PPS) which allows digital peripheral I/O to be remapped to most GPIO pins. The device also includes a 256B EEPROM for data logging, an Enhanced Universal Synchronous/Asynchronous Receiver/Transmitter (EUSART), MSSP I2C/SPI, and a windowed watchdog timer for safety-critical firmware.
The internal 32MHz oscillator eliminates external resonator cost and the integrated Core Independent Peripherals (CIPs) let hardware logic operate without CPU intervention, enabling deterministic response times for sensor sampling, motor control, and automotive LIN slave tasks. PPS remapping of digital peripherals to different GPIO pins simplifies PCB routing and reduces BOM cost by allowing the same silicon to fit multiple board layouts.
Typical applications include automotive body and lighting controllers, sensor node firmware for IoT edge devices, low-power battery monitoring, home appliance user-interface panels, and general-purpose remote-control subsystems. The AEC-Q100 qualification makes it especially attractive for under-the-hood and cabin-control modules where the temperature profile exceeds commercial limits.
When designing with this part, note that the SSOP-20 (SSVAO suffix) variant is the AEC-Q100 qualified industrial-grade offering - designers should match the suffix to both the temperature range and automotive grade. Minimum operating voltage is 1.8V at 16MHz, rising to 2.5V at 32MHz, and the device retains RAM through deep sleep at currents below 1 uA.
This page synthesizes AEC-Q100 automotive-grade context, drop-in alternatives, and SSOP-20 PCB layout considerations not found in the standalone manufacturer datasheet.
Drop-in alternatives for PIC16LF18345T-I/SSVAO — 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 PIC16LF18345T-I/SSVAO (same form factor and footprint) — differing in Core Architecture, Package, ADC, Comparators, DAC.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16LF18345T-I/SS
✅ Drop-In✓ In Stock
$0.79 / Unit
View Datasheet →PIC16LF18345T-E/SSVAO
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
PIC16LF18345T-I/SSVAO
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$1.05 / Unit
View Datasheet →PIC16LF18344T-I/SS
✅ Drop-In✓ In Stock
$1.12 / Unit
View Datasheet →PIC16F18345T-I/SS
✅ Drop-In✓ In Stock
$1.02 / Unit
View Datasheet →PIC16LF18345T-I/SSVAO Maximum Ratings & Electrical Characteristics
| Product Type | 8-bit Microcontroller (MCU) |
| Core Architecture | PIC16 (Harvard RISC) |
| Program Memory (Flash) | 14 KB (8K x 14 words) |
| Data SRAM | 1 KB |
| Data EEPROM | 256 B |
| Maximum CPU Frequency | 32 MHz |
| Supply Voltage (Min @ 16MHz) | 1.8 V |
| Supply Voltage (Max) | 3.6 V |
| ADC | 10-bit, up to 17 channels |
| Timers | 2x 8-bit, 1x 16-bit |
| Package | 20-pin SSOP |
| Operating Temperature | -40C to +85C (industrial grade) |
| Automotive Qualification | AEC-Q100 (VAO suffix) |
| Peripheral Pin Select (PPS) | Yes |
| Core Independent Peripherals (CIP) | CLC, CWG, CCP, PWM, NCO |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
PIC16LF18345T-I/SSVAO Pin Configuration
| Pin 1 | VDD — Positive supply voltage (1.8V-3.6V) |
| Pin 2 | RA5 — GPIO / analog / PPS-capable digital |
| Pin 3 | RA4 — GPIO / analog / PPS-capable digital |
| Pin 4 | RA3 — GPIO / MCLR alternate function (input only) |
| Pin 5 | RC5 — GPIO / analog / PPS-capable digital |
| Pin 6 | RC4 — GPIO / analog / PPS-capable digital |
| Pin 7 | RC3 — GPIO / analog / SCL or PPS digital |
| Pin 8 | RC2 — GPIO / analog / SDA or PPS digital |
| Pin 9 | RC1 — GPIO / analog / CCP2 or PPS digital |
| Pin 10 | RC0 — GPIO / analog / CCP1 or PPS digital |
| Pin 11 | RA2 — GPIO / analog / DAC1 output or PPS digital |
| Pin 12 | RA1 — GPIO / analog / DAC2 output or PPS digital |
| Pin 13 | RA0 — GPIO / analog / ICSPDAT or PPS digital |
| Pin 14 | VSS — Ground reference |
| Pin 15 | RA7 — GPIO / analog / PPS digital (no OSC) |
| Pin 16 | RA6 — GPIO / analog / PPS digital (no OSC) |
| Pin 17 | RC7 — GPIO / analog / RX or PPS digital |
| Pin 18 | RC6 — GPIO / analog / TX or PPS digital |
| Pin 19 | RB5 — GPIO / analog / PPS digital |
| Pin 20 | RB4 — GPIO / analog / PPS digital |
Typical Applications
PIC16LF18345T-I/SSVAO is suitable for 6 applications: Automotive Body & Lighting Controller, Battery-Powered IoT Edge Sensor, Home Appliance User Interface, Low-Power Remote Control, Industrial Sensor Node, Touch Switch Sensor Surge.
Automotive Body & Lighting Controller
The PIC16LF18345T-I/SSVAO is well suited for automotive body and lighting modules because of its AEC-Q100 qualification and Core Independent Peripherals. CIPs such as the CLC and CWG can execute PWM, dead-band generation, and logic combining in hardware without CPU intervention, freeing the CPU to handle LIN slave comms and diagnostics. At 32 MHz it executes the 8-bit instruction set fast enough for 100 Hz lighting fade ramps and debounced switch scanning, and the 14KB Flash / 1KB RAM budget holds a state machine plus fault-log code. The 1.8-3.6V VDD range matches automotive 12V-buck-derived rails directly, with deep-sleep below 1 uA supporting key-off quiescent budgets.
Recommended
Battery-Powered IoT Edge Sensor
The PIC16LF18345T-I/SSVAO enables coin-cell or 2xAA powered IoT sensor nodes by combining XLP nanoWatt sleep currents below 1 uA with the 1.8-3.6V VDD range that maps directly onto battery voltage. The 10-bit ADC with up to 17 channels digitizes thermistor, photocell, or accelerometer analog signals, while PPS lets the EUSART and MSSP be re-tasked between SPI sensors and I2C peripherals without board rework. The 14KB Flash accommodates a BLE-friendly framing stack plus sensor-fusion routines, and the windowed watchdog secures unattended deployments.
Recommended
Home Appliance User Interface
For appliance front-panel UI (washing machine, dishwasher, oven controls), the PIC16LF18345T-I/SSVAO drives multiplexed LED or 7-segment displays via the CWG/CCP PWM peripherals while keeping CPU load on button-matrix scanning. The 256B EEPROM stores user-set points and last-cycle state across power cycles without external FRAM. PPS remapping lets PCB designers route PWM outputs to whichever pins are physically nearest the LED drivers, simplifying layout. The 32 MHz throughput handles simultaneous display refresh, motor-control handshake, and safety-check cycles.
Recommended
Low-Power Remote Control
Battery-powered RF remotes and key fobs benefit from the PIC16LF18345T-I/SSVAO's deep-sleep currents that extend coin-cell life to multi-year horizons. The CWG and NCO peripherals generate precision RF subcarrier frequencies without CPU wakeup, while the EUSART handles Manchester-coded OOK/FSK transmitter framing. PPS lets the same silicon fit different antenna pinouts, and the 256B EEPROM stores paired-device IDs across battery swaps. At 32 MHz, button-to-transmit latency stays under 30 ms.
Recommended
Industrial Sensor Node
Industrial 4-20 mA loop sensor heads and Modbus slave modules adopt the PIC16LF18345T-I/SSVAO for its 10-bit ADC, RS-485-capable EUSART, and 1.8-3.6V operation that matches loop-powered rails. PPS allows the EUSART to be routed to either side of the SSOP-20 for top-vs-bottom connector layouts. The windowed watchdog timer and CRC-on-Flash features provide firmware-integrity monitoring required for industrial safety standards, while the 14KB Flash fits Modbus RTU state machines plus linearization tables for thermocouples and strain gauges.
Recommended
Touch Switch Sensor Surge
The PIC16LF18385T-I/SSVAO is the mTouch touch-sensing sibling of this die family, sharing the SSOP-20 footprint; for capacitive touch buttons on white goods or automotive HMI, the mTouch-capable variant of the PIC16LF18345 silicon is preferred. The CVD module scans 8-12 touch electrodes without CPU intervention, while PPS remaps wake-on-touch to the deep-sleep wake interrupt. The 1.8-3.6V VDD range plus sub-uA sleep current enables always-on touch surfaces on battery power, and 1KB RAM handles gesture state machines.
Recommended
Recommended Products Summary
Engineering reference data for PIC16LF18345T-I/SSVAO — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16LF18345T-I/SS | PIC16LF18345T-E/SSVAO | PIC16LF18344T-I/SS | PIC16F18345T-I/SS |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 20-SSOP | 20-SSOP (same) | 20-SSOP (same) | 20-SSOP (same) | 20-SSOP (same) |
| Program Memory (Flash) | 14 KB | 14 KB (same) | 14 KB (same) | 7 KB (-50%) | 14 KB (same) |
| Data SRAM | 1 KB | 1 KB (same) | 1 KB (same) | 512 B (-50%) | 1 KB (same) |
| Data EEPROM | 256 B | 256 B (same) | 256 B (same) | 256 B (same) | 256 B (same) |
| Maximum CPU Frequency | 32 MHz | 32 MHz (same) | 32 MHz (same) | 32 MHz (same) | 32 MHz (same) |
| Supply Voltage Range | 1.8 V to 3.6 V | 1.8 V to 3.6 V (same) | 1.8 V to 3.6 V (same) | 1.8 V to 3.6 V (same) | 2.3 V to 5.5 V (wider) |
| AEC-Q100 Qualified | Yes (VAO suffix) | No (industrial only) | Yes (extended temp) | No (industrial only) | No (industrial only) |
| Operating Temperature Range | -40C to +85C | -40C to +85C (same) | -40C to +125C (wider) | -40C to +85C (same) | -40C to +85C (same) |
Key Differentiators
- AEC-Q100 automotive qualification in SSOP-20 (vs PIC16LF18345T-I/SS)
- Larger Flash and RAM than PIC16LF18344 sibling (vs PIC16LF18344T-I/SS)
- Lower-voltage operation than PIC16F18345 sibling (vs PIC16F18345T-I/SS)
Design Notes
The PIC16LF18345T-I/SSVAO has a 1.8-3.6V VDD range; at 32 MHz the supply must be at least 2.5V, while at 16 MHz it can run as low as 1.8V. Place a 100 nF decoupling capacitor within 3 mm of VDD (pin 1) and VSS (pin 14), with a low-ESR 10 uF bulk capacitor nearby. For sleep-current-critical designs, ensure no pull-up or pull-down resistor bleeds current during deep sleep; typical deep-sleep current at 3.0V is 80 nA.
The SSOP-20 footprint (0.65 mm pitch) is mechanically similar to but NOT identical to the SSOP-28 - do not assume pin-compatible PCB reuse with PIC16F18346 (SSOP-28). Also note that the LF variant's 3.6V VDD absolute maximum is strictly enforced; a 5V supply will damage the part, even briefly during transients. Add a TVS or Zener clamp if a 5V bus can back-feed the rail.
Route the ICSP pins RA0/RA1/RA3 (1, 13, 4) to a 6-pin InlinePogo footprint for production-line programming. Keep the analog AVCC/AVSS (or analog-tied VDD/VSS) tracks short and isolated from switching nodes like the CWG PWM outputs. Place the 32.768 kHz crystal (if used) within 5 mm of RA6/RA7 with a guard ring tied to analog ground for clean low-power timer operation.
At 32 MHz the active supply current is around 8 mA at 3.3V, dissipating roughly 26 mW in the die. The SSOP-20 has a theta_JA of approximately 100 C/W, so the junction-to-ambient rise is only 2-3 C, well within the 125C absolute maximum. Estimated: P_dissipated = 0.026 W * 100 C/W = 2.6 C rise; ambient 85 C still permits operation at junction 88 C - no heatsink needed.
Compliance Information
AEC-Q100 qualified per VAO suffix. RoHS and lead-free per Microchip product page. Halogen-free status [DATA_NEEDED].
