PIC16F18345T-E/SSVAO - 8-bit MCU, 14KB Flash, 20-SSOP | Microchip
MPN: PIC16F18345T-E/SSVAO ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $2.18 | $2.18 |
| 10 | $1.96 | $19.60 |
| 100 | $1.74 | $174.00 |
| 500 | $1.55 | $775.00 |
| 1,000 | $1.39 | $1,390.00 |
PIC16F18345T-E/SSVAO Overview
What is a PIC16 microcontroller? The PIC16F family is Microchip's mid-range 8-bit microcontroller line, sitting between the baseline PIC10/12/16F and the 16-bit dsPIC/PIC24 families. PIC16F183xx parts use an enhanced mid-range core with Peripheral Pin Select (PPS), which lets designers remap digital peripherals (CLC, CWG, CCP, PWM, communication) to almost any I/O pin. They are widely used in low-power IoT nodes, sensor interfaces, and battery-powered consumer devices where deterministic 8-bit control is sufficient.
Key features of the PIC16F18345 include Core Independent Peripherals (CIPs) such as Configurable Logic Cells (CLC), Complementary Waveform Generator (CWG), 10-bit PWM with up to 5 PWM outputs, Numerically Controlled Oscillator (NCO), and angular timer. The device also integrates a 10-bit ADC with computation (ADC2), two comparators, a 5-bit DAC, and fixed voltage reference (FVR). eXtreme Low Power (XLP) technology delivers deep sleep currents typically under 50 nA, making it ideal for battery or energy-harvesting designs.
Architecturally, the PIC16F18345 uses a 14-bit instruction word RISC core with a hardware stack and 32 MHz internal oscillator. The PPS module decouples peripheral pinout from peripheral identity, simplifying PCB routing. Memory includes 14KB self-programmable Flash with program flash shield, 256B EEPROM for non-volatile data, and 1KB SRAM. Communication peripherals cover EUSART with auto-baud detect, I2C and SPI. With 18 strong I/O capable of driving LEDs directly, the device serves as a system-on-chip for small embedded products.
Typical applications include IoT sensor badges and battery-powered wireless sensor nodes, low-power remote controls and home automation endpoints, LED lighting controllers with PWM dimming, automotive interior body and sensor nodes (PPAP available through Microchip), industrial sensor conditioning with on-chip op amps, and consumer appliance user interfaces. The wide 1.8V to 5.5V operating range and robust peripheral set make it a flexible general-purpose MCU.
When designing with this part, place decoupling capacitors (100 nF plus 1 µF bulk) close to VDD/VSS, use the PPS feature to optimize PCB routing, and select the lowest-power sleep mode (e.g., Retention Sleep) that meets wake-up latency requirements to maximize battery life.
This page synthesizes verified distributor pricing, drop-in same-package alternatives, and practical design notes to help engineers accelerate PIC16F18345 selection and sourcing.
Drop-in alternatives for PIC16F18345T-E/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 PIC16F18345T-E/SSVAO (same form factor and footprint) — differing in Package, ADC, DAC, Core Architecture, I/O Pins.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16F18345T-I/SSVAO
✅ Drop-In✓ In Stock
$1.92 / Unit
View Datasheet →PIC16F18344-I/SS
✅ Drop-In✓ In Stock
$0.86 / Unit
View Datasheet →PIC16F18344-E/SO
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$0.77 / Unit
View Datasheet →PIC16F18325-E/ST
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$0.98 / Unit
View Datasheet →PIC16F18323-E/SL
✅ Drop-In✓ In Stock
$1.05 / Unit
View Datasheet →PIC16F18313-I/SN
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$0.71 / Unit
View Datasheet →PIC16F18345T-E/SSVAO Maximum Ratings & Electrical Characteristics
| Core Architecture | 8-bit PIC enhanced mid-range |
| Program Memory (Flash) | 14 KB (8K x 14 words) |
| Data EEPROM | 256 B |
| SRAM | 1 KB |
| Maximum CPU Speed | 32 MHz |
| I/O Pins | 18 |
| Package | 20-SSOP (5.30 mm body width) |
| Operating Voltage Range | 1.8 V to 5.5 V |
| ADC | 10-bit with computation (ADC2) |
| PWM Channels | 10-bit, up to 5 outputs |
| Core Independent Peripherals | CLC, CWG, CCP, NCO, angular timer |
| Communication Peripherals | EUSART (auto-baud), I2C, SPI |
| Comparators | 2 |
| DAC | 5-bit DAC + Fixed Voltage Reference |
| Low-Power Feature | eXtreme Low Power (XLP) |
| Peripheral Pin Select (PPS) | Yes |
| Functional Safety (FuSa) | Yes |
| Operating Temperature (E suffix) | -40C to +125C (Extended) |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
PIC16F18345T-E/SSVAO Pin Configuration
| Pin 1 | RA5 — Bidirectional I/O with interrupt-on-change; analog capable |
| Pin 2 | RA4 — Bidirectional I/O; analog capable |
| Pin 3 | RA3/MCLR — Bidirectional I/O or Master Clear (reset) input |
| Pin 4 | RA2 — Bidirectional I/O; analog capable |
| Pin 5 | RA1 — Bidirectional I/O; analog capable |
| Pin 6 | RA0 — Bidirectional I/O; analog capable |
| Pin 7 | VDD — Positive power supply (1.8 V to 5.5 V) |
| Pin 8 | VSS — Ground reference |
| Pin 9 | RA7 — Bidirectional I/O; analog capable |
| Pin 10 | RA6 — Bidirectional I/O; analog capable |
| Pin 11 | RC5 — Bidirectional I/O; analog capable |
| Pin 12 | RC4 — Bidirectional I/O; analog capable |
| Pin 13 | RC3 — Bidirectional I/O; analog capable |
| Pin 14 | RC2 — Bidirectional I/O; analog capable |
| Pin 15 | RC1 — Bidirectional I/O; analog capable |
| Pin 16 | RC0 — Bidirectional I/O; analog capable |
| Pin 17 | OSC1/RA7 — Crystal input or I/O |
| Pin 18 | OSC2/RA6 — Crystal output or I/O |
| Pin 19 | RB7 — Bidirectional I/O |
| Pin 20 | RB6 — Bidirectional I/O |
Typical Applications
PIC16F18345T-E/SSVAO is suitable for 6 applications: IoT Sensor Badge / Battery Sensor Node, Battery-Powered Remote Control / Home Automation, LED Lighting Controller with PWM Dimming, Automotive Interior Sensor Node, Industrial Sensor Signal Conditioning, Consumer Appliance User Interface.
IoT Sensor Badge / Battery Sensor Node
The PIC16F18345T-E/SSVAO is ideal for IoT sensor badges and wireless sensor nodes because of its eXtreme Low Power (XLP) sleep currents under 50 nA, 14 KB Flash for small protocol stacks, and 10-bit ADC2 with computation for direct sensor conditioning. With 32 MHz CPU clock, it can run Microchip's 8-bit LoRa/BLE stack fragments while drawing negligible current during deep sleep. The 1.8-5.5 V range also supports direct operation from a single CR2032 or two-AA cells, eliminating the need for a boost regulator. Place the MCU in Retention Sleep between sensor reads to extend battery life to multi-year targets.
Recommended
Battery-Powered Remote Control / Home Automation
Remote controls and home automation endpoints benefit from the PIC16F18345T-E/SSVAO's combination of PPS flexibility, low active current, and integrated CIPs. The CWG (Complementary Waveform Generator) produces non-overlapping complementary PWM outputs for half-bridge or full-bridge IR LED drivers without CPU load. With 18 I/O pins, the same MCU can scan a 4x5 key matrix, drive an IR LED, monitor battery voltage through the ADC2, and wake on a GPIO interrupt. The 1.8 V minimum supply supports direct operation from 2x alkaline or a single lithium coin cell across its full discharge curve.
Recommended
LED Lighting Controller with PWM Dimming
For LED lighting controllers the PIC16F18345T-E/SSVAO delivers up to 5 hardware 10-bit PWM channels with up/down counting and dead-band control, ideal for RGBW color mixing or warm-dimming CCT strips. The integrated 5-bit DAC and fixed voltage reference (FVR) provide precise current-setpoint references for constant-current LED drivers. PPS lets the designer route PWM outputs to any I/O pin, simplifying PCB routing for multi-zone fixtures. Combined with EUSART auto-baud detect, the MCU easily handles DMX-512, 0-10 V, or wireless dimming interfaces.
Recommended
Automotive Interior Sensor Node
Automotive interior sensor nodes such as ambient light sensors, HVAC controls, and door modules benefit from the PIC16F18345T-E/SSVAO's -40C to +125C extended temperature range, robust ESD protection, and 32 MHz performance. The Functional Safety (FuSa) classification makes it suitable for non-safety-critical body electronics, and Microchip's PPAP documentation is available for OEM programs. The integrated comparators and ADC2 support direct thermistor and photodiode conditioning, while CWG can drive small MOSFETs for backlight or fan control without external logic.
Recommended
Industrial Sensor Signal Conditioning
Industrial sensor signal conditioning applications use the PIC16F18345T-E/SSVAO to digitize analog sensor outputs through its 10-bit ADC2 with computation (oversampling, averaging, threshold compare) and drive 4-20 mA or 0-10 V analog outputs through the 5-bit DAC and PWM-filtered channels. The two on-chip comparators enable window-discriminator or threshold-trip functions without external op-amps. The 32 MHz CPU speed handles small Modbus RTU framing, and the 256 B EEPROM stores calibration coefficients. With 1.8-5.5 V operation, the MCU is directly compatible with 3.3 V and 5 V industrial sensor boards.
Recommended
Consumer Appliance User Interface
Consumer appliance user interfaces (coffee machines, washing machines, microwaves, smart thermostats) rely on the PIC16F18345T-E/SSVAO for capacitive touch sensing through the CLC and CTMU peripherals, LED matrix driving through CWG/PWM, and rotary encoder decoding through the CCP. The 18 I/O pins comfortably support a 7-segment display, a keypad, a buzzer, and relay control outputs. The internal 32 MHz oscillator eliminates the need for an external crystal, reducing BOM cost and PCB area. XLP deep sleep modes drop quiescent current below 50 nA in standby, meeting Energy Star standby requirements.
Recommended
Recommended Products Summary
Engineering reference data for PIC16F18345T-E/SSVAO — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16F18345T-I/SSVAO | PIC16F18344-I/SS | PIC16F18325-E/ST | PIC16F18323-E/SL | PIC16F18313-I/SN |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 20-SSOP | 20-SSOP - same | 20-SSOP - same | 20-TSSOP - same 20-pin footprint | 20-SSOP (SO-20 wide) - same | 20-SSOP (SO-20 narrow) - same |
| Program Flash | 14 KB | 14 KB | 7 KB | 14 KB | 7 KB | 4 KB |
| SRAM | 1 KB | 1 KB | 1 KB | 1 KB | 512 B | 256 B |
| EEPROM | 256 B | 256 B | 256 B | 256 B | 256 B | 256 B |
| Maximum CPU Clock | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz |
| Operating Voltage | 1.8 V to 5.5 V | 1.8 V to 5.5 V | 1.8 V to 5.5 V | 1.8 V to 5.5 V | 1.8 V to 5.5 V | 1.8 V to 5.5 V |
| Operating Temperature | -40C to +125C (Extended) | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +125C (Extended) | -40C to +125C (Extended) | -40C to +85C (Industrial) |
| I/O Pins | 18 | 18 | 18 | 18 | 18 | 18 |
| Peripheral Pin Select (PPS) | Yes | Yes | Yes | Yes | Yes | Yes |
Key Differentiators
- Extended temperature grade for automotive and industrial (vs PIC16F18345T-I/SSVAO)
- Maximum Flash in the PIC16F183xx 20-SSOP family (vs PIC16F18344-I/SS)
- Largest SRAM in the 20-SSOP PIC16F183xx family (vs PIC16F18313-I/SN)
Design Notes
Place a 100 nF ceramic decoupling capacitor as close as possible to the VDD/VSS pins (pins 7 and 8 on the 20-SSOP), and add a bulk 1 µF to 10 µF capacitor near the supply input. For battery-powered designs, enable the PIC16F18345's eXtreme Low Power (XLP) Retention Sleep mode and use the RTC with a 32.768 kHz external crystal to keep current draw below 1 µA in standby while maintaining wake-up timing accuracy.
The 20-SSOP package has a 0.65 mm pitch and 5.30 mm body width. Use 0.4 mm-wide traces with 0.2 mm spacing into the pads, and reserve a continuous ground pour beneath the MCU for thermal dissipation and EMI suppression. Keep the analog inputs (RA0-RA2, RA4-RA5, RC0-RC5) routed away from PWM and switching signals to avoid ADC2 noise coupling; use a separate analog ground island if mixed-signal accuracy is required.
Do not leave unused I/O pins floating on the PIC16F18345T-E/SSVAO; configure them as outputs driving low or enable the internal weak pull-up. Floating inputs can draw microamps of leakage current and may trigger spurious interrupts that wake the MCU from sleep. Also confirm the MCLR pin (pin 3) has the correct pull-up configuration in your CONFIG words - disabling MCLR saves one I/O pin but requires the ICSP programmer to drive reset.
When using the internal 32 MHz HFINTOSC, keep the OSC1/OSC2 pins free of capacitive loading; if an external crystal is required, place the crystal within 5 mm of pins 17 and 18 with a guard ring tied to ground. For PPS-routed peripherals, group the assigned pins together on the PCB to minimize routing congestion and signal cross-talk, and document the PPS mapping table in firmware comments for future maintenance.
Compliance Information
RoHS compliant per Microchip product page. AEC-Q100 grade not formally qualified - the E temp grade supports automotive interior use but safety-critical systems require ISO 26262-qualified parts.
