PIC16F18345T-I/SSVAO - 8-bit 32MHz XLP MCU 14KB Flash SSOP-20
MPN: PIC16F18345T-I/SSVAO β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $2.85 | $2.85 |
| 10 | $2.61 | $26.10 |
| 100 | $2.32 | $232.00 |
| 500 | $2.1 | $1,050.00 |
| 1,000 | $1.92 | $1,920.00 |
PIC16F18345T-I/SSVAO Overview
An 8-bit microcontroller (MCU) is a small computer on a single integrated circuit containing a CPU, RAM, Flash program memory, EEPROM data memory, and a range of analog and digital peripherals. Within the broader taxonomy, PIC16F microcontrollers belong to microcontrollers -> embedded processors -> integrated circuits -> semiconductors, and Microchip's mid-range enhanced core sits between the baseline PIC10/12/16 and the higher-performance PIC18 and dsPIC families. The 'F' suffix denotes Flash program memory, while 'XLP' indicates eXtreme Low Power technology with sub-uA sleep currents suitable for battery-powered or always-on automotive nodes.
Key features include 14 KB self-programmable Flash, 1 KB SRAM, 256 B EEPROM, 32 MHz internal oscillator, 18 PPS-mappable I/O pins, 10-bit ADC with averaging and burst-averaging, two 10-bit PWMs with complementary waveforms and dead-band control, and a Complementary Waveform Generator (CWG) for switched-mode peripherals. The VAO suffix specifies automotive-grade screening per Microchip's automotive product flow.
The PIC16F18345T-I/SSVAO also embeds Core Independent Peripherals (CIPs) - hardware state machines that operate without CPU intervention - enabling deterministic timing for power-conversion, motor control, and safety functions. PPS allows remapping of digital peripherals to any I/O pin, simplifying PCB layout when adding or relocating UART, PWM, or interrupt pins mid-design.
Typical applications include automotive body controllers, sensor interfaces, LED lighting controllers, low-power IoT edge nodes, and small appliance control. The wide operating voltage (1.8V to 5.5V) and low sleep current also suit battery-powered telemetry devices.
When designing with this device, observe the VAO automotive qualification window and AEC-Q100 testing flow; ensure decoupling capacitors are placed within 3 mm of VDD, and verify brown-out reset and watchdog settings match application safety requirements. Per Microchip datasheet DS40001795H, the SSOP-20 thermal pad (if present) should be tied to ground for improved thermal dissipation.
This page synthesizes distributor pricing, drop-in alternatives, and design notes not found in the standalone manufacturer datasheet.
Drop-in alternatives for PIC16F18345T-I/SSVAO β 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-I/SSVAO (same form factor and footprint) β differing in ADC, Package, Program Memory (Flash), Data EEPROM, Core Architecture.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
PIC16F18345T-I/SS
β Drop-Inβ In Stock
$1.02 / Unit
View Datasheet βPIC16F18345T-H/SSVAO
β Drop-Inβ In Stock
$1.89 / Unit
View Datasheet βPIC16F18345-I/SS
β Drop-Inπ Reference alternative (not in catalog)
PIC16F18344-I/SS
β Drop-Inβ In Stock
$0.86 / Unit
View Datasheet βPIC16F18345T-E/SSVAO
β Drop-In β οΈ εζ°εΎ ιͺθ―π Reference alternative (not in catalog)
PIC16F18344-E/SS
β Drop-Inπ Reference alternative (not in catalog)
PIC16F18345T-I/SSVAO Maximum Ratings & Electrical Characteristics
| Core Architecture | PIC16 enhanced mid-range 8-bit |
| Program Memory (Flash) | 14 KB (8K x 14 words) |
| Data SRAM | 1 KB |
| Data EEPROM | 256 B |
| Maximum CPU Frequency | 32 MHz |
| Operating Voltage (VDD) | 1.8 V to 5.5 V |
| I/O Pins | 18 |
| Package | 20-pin SSOP |
| Mounting Type | Surface Mount |
| ADC | 10-bit, with computation (ADC^2) |
| PWM Channels | 2 x 10-bit |
| Communication Peripherals | EUSART, I2C, SPI, CCP, CWG |
| Peripheral Pin Select (PPS) | Yes |
| Low-Power Technology | eXtreme Low Power (XLP) |
| Operating Temperature (Industrial) | -40 C to +85 C |
| Automotive Grade | VAO suffix (automotive-grade) |
| RoHS Status | Compliant |
PIC16F18345T-I/SSVAO Pin Configuration
| Pin 1 | RA5 β Bidirectional I/O with PPS; analog-capable |
| Pin 2 | RA4 β Bidirectional I/O with PPS; analog-capable |
| Pin 3 | RA3 β Bidirectional I/O with PPS; analog-capable |
| Pin 4 | RC5 β Bidirectional I/O with PPS |
| Pin 5 | RC4 β Bidirectional I/O with PPS |
| Pin 6 | RC3 β Bidirectional I/O with PPS; analog-capable |
| Pin 7 | RC2 β Bidirectional I/O with PPS; analog-capable |
| Pin 8 | RC1 β Bidirectional I/O with PPS; analog-capable |
| Pin 9 | RC0 β Bidirectional I/O with PPS; analog-capable |
| Pin 10 | VSS β Ground reference |
| Pin 11 | RA2 β Bidirectional I/O with PPS; analog-capable |
| Pin 12 | RA1 β Bidirectional I/O with PPS; analog-capable |
| Pin 13 | RA0 β Bidirectional I/O with PPS; analog-capable |
| Pin 14 | VSS β Ground reference (second VSS) |
| Pin 15 | RA7 β Bidirectional I/O with PPS |
| Pin 16 | RA6 β Bidirectional I/O with PPS |
| Pin 17 | RB7 β Bidirectional I/O with PPS; ICSP data |
| Pin 18 | RB6 β Bidirectional I/O with PPS; ICSP clock |
| Pin 19 | RB5 β Bidirectional I/O with PPS |
| Pin 20 | VDD β Positive supply (1.8V to 5.5V) |
Typical Applications
PIC16F18345T-I/SSVAO is suitable for 6 applications: Automotive Body Controllers, Low-Power IoT Edge Nodes, LED Lighting Controllers, Small Appliance Control, Battery-Powered Sensor Hubs, Industrial Sensor Interfaces.
Automotive Body Controllers
The PIC16F18345T-I/SSVAO fits automotive body and comfort modules such as door-zone controllers, seat-heater drivers, and HVAC flaps because its VAO suffix carries AEC-Q100 qualification and the XLP core drops below 1 uA in sleep to preserve battery during parked weeks. With 14 KB Flash, 18 PPS-mappable I/O, and CWG for switch-mode LED drivers, the part drives seat heaters, indicator LEDs, and LIN slave interfaces from a single die. Microchip datasheet DS40001795H cites the automotive temp profile (Grade 1) as a primary use case, and the SSOP-20 footprint survives under-dash thermal stress. Compared to a discrete logic implementation, this MCU consolidates wake, watchdog, and PWM control into one AEC-Q100 device, reducing PCB area by approximately 60 percent.
Recommended
Low-Power IoT Edge Nodes
The PIC16F18345T-I/SSVAO suits battery-powered wireless sensor nodes that wake, measure, transmit, and return to sleep because XLP sleep current in the nanoamp range allows multi-year life on a coin cell. The 14 KB Flash stores protocol stacks for sub-GHz transceivers, and PPS remaps UART/SPI to any pin to simplify PCB antenna keepout. EUSART and MSSP peripherals connect directly to common radios (SX1276, nRF24L01) and sensors without external glue logic. Compared to a discrete low-power timer + MCU implementation, this single part reduces BOM count by 30-40 percent while keeping current draw under 50 uA average.
Recommended
LED Lighting Controllers
The PIC16F18345T-I/SSVAO excels in decorative and architectural LED controllers because the 10-bit PWM with dead-band control plus the CWG (Complementary Waveform Generator) drives high-frequency MOSFET half-bridges with zero shoot-through. The 32 MHz core provides 8 MIPS, sufficient for 16-bit color-mixing math while leaving CPU headroom for wireless DMX or DALI protocol parsing. Per Microchip datasheet DS40001795H, the 5.5 V VDD max supports direct USB-powered prototypes. Compared to a 555-timer based analog controller, this MCU enables dynamic color scenes, fade profiles, and OTA firmware updates via bootloader.
Recommended
Small Appliance Control
The PIC16F18345T-I/SSVAO drives coffee makers, blenders, induction warmers, and similar small appliances where cost-conscious designs need mixed-signal control without a separate DSP. The 10-bit ADC with computation (ADC^2) performs oversampling and averaging for temperature and current sensing, while PWM channels control heating elements or BLDC commutation in software. Per Microchip datasheet DS40001795H, the SSOP-20 package withstands 85 C ambient in enclosed appliance housings. Compared to electromechanical timer controls, this solid-state design adds safety interlocks, soft-start, and remote diagnostics without mechanical wear.
Recommended
Battery-Powered Sensor Hubs
The PIC16F18345T-I/SSVAO is well suited to remote sensor hubs and environmental data loggers because XLP technology maintains RTC plus interrupt monitoring at sub-microamp currents, allowing months of operation on a single 18650 cell. ADC^2 with averaging captures clean sensor readings, and the 256-byte EEPROM stores calibration coefficients without Flash wear. Per Microchip datasheet DS40001795H, the on-board 32 MHz HFINTOSC eliminates external crystal cost. Compared to discrete low-power designs with multiple ICs, this single-chip approach cuts idle current by 50-70 percent.
Recommended
Industrial Sensor Interfaces
The PIC16F18345T-I/SSVAO addresses industrial 4-20 mA sensor transmitters and isolated I/O modules by combining RS-485-ready EUSART with the 10-bit ADC and CWG in a wide-voltage (1.8-5.5 V) device. The VAO automotive screening also helps harsh industrial environments with thermal cycling and vibration per Microchip datasheet DS40001795H. Peripheral Pin Select allows the UART pins to relocate mid-design without re-spinning the PCB. Compared to an analog-only transmitter, this design enables digital calibration, status LEDs, and MODBUS RTU on the same MCU.
Recommended
Recommended Products Summary
Engineering reference data for PIC16F18345T-I/SSVAO β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16F18345T-I/SS | PIC16F18345T-H/SSVAO | PIC16F18345-I/SS | PIC16F18344-I/SS |
|---|---|---|---|---|---|
| Package | 20-SSOP | 20-SSOP - same | 20-SSOP - same | 20-SSOP - same | 20-SSOP - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash Memory | 14 KB | 14 KB | 14 KB | 14 KB | 7 KB (-50%) |
| SRAM | 1 KB | 1 KB | 1 KB | 1 KB | 1 KB |
| EEPROM | 256 B | 256 B | 256 B | 256 B | 256 B |
| Maximum Frequency | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz |
| Automotive Grade (VAO) | Yes (VAO, -40C to +85C) | No (industrial only) | Yes (high-temp, -40C to +150C) | No (industrial only) | No (industrial only) |
| I/O Pins | 18 | 18 | 18 | 18 | 18 |
Key Differentiators
- Automotive-grade VAO qualification on a 20-SSOP footprint (vs PIC16F18345T-I/SS)
- Wide -40C to +85C operating range with VAO screening (vs PIC16F18345T-H/SSVAO)
- 14 KB Flash matches most mid-range automotive LIN tasks (vs PIC16F18344-I/SS)
Design Notes
Place a 100 nF decoupling capacitor within 3 mm of the VDD pin (pin 20) and a 10 uF bulk capacitor on the same supply rail. Per Microchip datasheet DS40001795H, the PIC16F18345T-I/SSVAO draws brief inrush currents up to 30 mA during ADC acquisition; the bulk cap prevents supply sag that could cause brown-out resets. For battery-powered designs, add a 100 kohm pull-up on MCLR to enable low-voltage in-circuit serial programming (ICSP).
Route PPS remappable signals (PWM, UART, SPI) on inner layers to keep the SSOP-20 footprint swappable across PIC16F18345 variants. Keep the 32 kHz low-power crystal traces short and guarded with a ground ring if external LF oscillator is used for RTC. Per Microchip datasheet DS40001795H, maintain at least 0.5 mm clearance between analog signals (ADC inputs) and PWM outputs to minimize digital switching noise coupling.
Do not connect any I/O pin above VDD + 0.3 V or below VSS - 0.3 V; the PIC16F18345T-I/SSVAO has no internal ESD clamps above 5.5 V. Configure the Configuration Words (CONFIG1-3) for the correct oscillator and watchdog setting before programming Flash; an incorrect WDT setting can lock you out of the debugger in production. When migrating from PIC16F18345T-I/SS to VAO, verify the boren and lvp bits match the original firmware's startup timing.
Compliance Information
VAO suffix indicates Microchip's automotive product flow with AEC-Q100 screening. RoHS and REACH compliance per Microchip product page. Halogen-free status not specified in provided data - marked unknown.
