PIC16F18345T-I/SS - 8-Bit XLP MCU 14KB Flash 32MHz SSOP-20 | Microchip
MPN: PIC16F18345T-I/SS β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.62 | $1.62 |
| 10 | $1.45 | $14.50 |
| 100 | $1.28 | $128.00 |
| 500 | $1.14 | $570.00 |
| 1,000 | $1.02 | $1,020.00 |
PIC16F18345T-I/SS Overview
Drop-in alternatives for PIC16F18345T-I/SS 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/SS (same form factor and footprint) β differing in ADC, Package, Core Architecture, Program Memory (Flash), Communication Peripherals.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
PIC16F18344T-I/SS
β Drop-Inπ Reference alternative (not in catalog)
PIC16F18345T-H/SSVAO
β Drop-Inβ In Stock
$1.89 / Unit
View Datasheet βPIC16F18345T-E/SSVAO
β Drop-Inπ Reference alternative (not in catalog)
PIC16F18345T-E/6NVAO
β Drop-Inβ In Stock
$1.38 / Unit
View Datasheet βPIC16F1829T-I/SS
β Drop-Inπ Reference alternative (not in catalog)
PIC16F18345T-I/SS Maximum Ratings & Electrical Characteristics
| Core Architecture | PIC16 8-bit enhanced mid-range |
| Program Flash Memory | 14 KB (8K x 14 words) |
| Data RAM | 1 KB |
| Data EEPROM | 256 B |
| Maximum CPU Speed | 32 MHz |
| Operating Voltage Range | 2.3 V to 5.5 V |
| Package | 20-pin SSOP (SS) 5.30 mm |
| Operating Temperature Range | -40 C to +85 C (Industrial) |
| ADC | 10-bit, multiple channels |
| DAC | 5-bit |
| PWM | 10-bit |
| Comparators | Yes (on-chip) |
| CCP Modules | Yes |
| CLC (Configurable Logic Cell) | Yes |
| NCO (Numerically Controlled Oscillator) | Yes |
| CWG (Complementary Waveform Generator) | Yes |
| PPS (Peripheral Pin Select) | Yes |
| EUSART | 1 |
| SPI | Yes |
| I2C | Yes |
| XLP (eXtreme Low Power) | Yes (nanoWatt) |
| Functional Safety (FuSa) | Yes |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
PIC16F18345T-I/SS Pin Configuration
| Pin 1 | VDD β Positive supply voltage (2.3V to 5.5V) |
| Pin 2 | RA5 β Digital I/O with PPS / ADC input |
| Pin 3 | RA4 β Digital I/O with PPS / ADC input |
| Pin 4 | RA3 β Digital I/O with PPS / MCLR (programming) |
| Pin 5 | RC5 β Digital I/O with PPS |
| Pin 6 | RC4 β Digital I/O with PPS |
| Pin 7 | RC3 β Digital I/O with PPS / SCL (default) |
| Pin 8 | RC2 β Digital I/O with PPS / SDA (default) |
| Pin 9 | RC1 β Digital I/O with PPS |
| Pin 10 | RC0 β Digital I/O with PPS |
| Pin 11 | VSS β Ground reference |
| Pin 12 | RC7 β Digital I/O with PPS |
| Pin 13 | RC6 β Digital I/O with PPS |
| Pin 14 | RB7 β Digital I/O with PPS / ICDCLK |
| Pin 15 | RB6 β Digital I/O with PPS / ICICD |
| Pin 16 | RB5 β Digital I/O with PPS / ADC input |
| Pin 17 | RB4 β Digital I/O with PPS / ADC input |
| Pin 18 | RB3 β Digital I/O with PPS / ADC input |
| Pin 19 | RB2 β Digital I/O with PPS / ADC input |
| Pin 20 | RB1 β Digital I/O with PPS / ADC input |
Typical Applications
PIC16F18345T-I/SS is suitable for 7 applications: Battery-Powered IoT Sensor Node, Functional Safety Sensor Conditioning, Low-Power Wireless Remote Control, White-Goods HMI Controller, LED Lighting Driver Controller, Automotive Sensor Cluster (AEC-Q100 Grade), Industrial Process Sensor Transmitter.
Battery-Powered IoT Sensor Node
The PIC16F18345T-I/SS fits battery-powered IoT sensor nodes because its nanoWatt XLP technology delivers sub-uA sleep current (typically <1 uA with RTC running) while the 32 MHz active CPU executes wake-and-transmit cycles in milliseconds. According to the Microchip datasheet 40001795H, the CLC plus NCO pair forms a hardware timer that wakes the device without firmware overhead, achieving years of life from a CR2032 coin cell. The 14 KB Flash accommodates small TCP/IP or LoRaWAN MAC stacks, and the 10-bit ADC interfaces directly to analog sensors like thermistors, photo-diodes, or gas sensors without external signal conditioning. The PPS remapping eases layout when stacking sensor mezzanines on a single SSOP-20 footprint.
Recommended
Functional Safety Sensor Conditioning
With its Functional Safety (FuSa) qualification, the PIC16F18345T-I/SS is designed into safety sensor conditioning paths such as over-temperature shutdowns in appliance heaters, motor stall detectors in white goods, and Class B smoke detector front-ends. The 5-bit DAC and on-chip comparator form a window comparator around a sensor signal, generating a hardware interrupt when limits are exceeded. According to Microchip datasheet 40001795H, the CWG can drive safety relays with hardware dead-time insertion independent of the CPU, providing deterministic protection that survives firmware faults. The SSOP-20 industrial temperature grade -40C to +85C supports the operating envelope of typical appliance safety electronics.
Recommended
Low-Power Wireless Remote Control
The PIC16F18345T-I/SS powers low-power wireless remote controls for consumer audio, ceiling fans, and motorized blinds thanks to XLP sleep currents under 1 uA and the ability to wake on a single button press through the CLC. A typical 2.4 GHz TX-only remote wakes, transmits a packet, and returns to sleep in <10 ms, drawing less than 5 uA average from two AAA cells. According to the datasheet, the PWM module drives an IR LED directly at 38 kHz carrier without CPU intervention, freeing the CPU for higher-level protocol handling. The 20-pin SSOP allows a thin remote PCB, and PPS keeps the GPIO and RF switch lines routable on a 2-layer board.
Recommended
White-Goods HMI Controller
The PIC16F18345T-I/SS serves as the HMI controller in washing machines, dishwashers, and induction cooktops where it scans capacitive touch buttons via the on-chip comparators and drives LED or LCD indicators through PWM and CWG. The Core Independent Peripherals (CLC, NCO) implement capacitive sensing timing in hardware, freeing the CPU for rotary encoder processing and motor control hand-off. According to the Microchip datasheet 40001795H, the EUSART interfaces to a companion motor-control MCU while the I2C bus drives an LED driver IC. Industrial -40C to +85C rating handles the thermal stress of closed-enclosure appliance environments.
Recommended
LED Lighting Driver Controller
The PIC16F18345T-I/SS drives constant-current LED strings via the CWG and 10-bit PWM, generating smooth dimming curves down to 0.1 percent without flicker. The CLC can implement hardware thermal foldback that reduces output current when an NTC sensor rises above threshold, independent of the CPU. According to the datasheet, the 5-bit DAC provides an analog reference for closed-loop current control through an external op-amp. With 14 KB Flash, color-mixing RGB or tunable-white firmware fits comfortably, and XLP sleep modes enable energy-efficient standby when the luminaire is off but still responsive to wall-switch events.
Recommended
Automotive Sensor Cluster (AEC-Q100 Grade)
For automotive sensor clusters, the PIC16F18345T-E/6NVAO variant (AEC-Q100 qualified, same SSOP-20 footprint as PIC16F18345T-I/SS) reads multiple analog sensors through the 10-bit ADC and reports via CAN bus using a SPI-to-CAN bridge IC. According to Microchip datasheet 40001795H, the Functional Safety features and -40C to +125C operating range (extended grade) make this family suitable for body-control and sensor-conditioning modules in vehicles. The PPS allows flexible pin assignment for body controller PCB layouts where connector orientation may change between vehicle programs.
Recommended
Industrial Process Sensor Transmitter
The PIC16F18345T-I/SS integrates 4-20 mA loop-powered process transmitters by digitizing an analog sensor through its 10-bit ADC and driving a PWM-controlled loop through a single transistor. According to Microchip datasheet 40001795H, the low 2.3 V minimum supply and XLP operation enable startup and operation entirely from a 4-20 mA loop budget. The on-chip 5-bit DAC calibrates offset and the comparator watches loop integrity, generating a fault output if the loop breaks. SSOP-20 industrial temperature rating and surface-mount assembly suit modern DIN-rail transmitter enclosures.
Recommended
Recommended Products Summary
Engineering reference data for PIC16F18345T-I/SS β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16F18344T-I/SS | PIC16F18345T-H/SSVAO | PIC16F18345T-E/SSVAO | PIC16F1829T-I/SS |
|---|---|---|---|---|---|
| Package | SSOP-20 (SS) | SSOP-20 - same | SSOP-20 - same | SSOP-20 - same | SSOP-20 - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash Memory | 14 KB | 8 KB | 14 KB | 14 KB | 14 KB |
| RAM | 1 KB | 1 KB | 1 KB | 1 KB | 1 KB |
| CPU Speed | 32 MHz / 8 MIPS | 32 MHz / 8 MIPS | 32 MHz / 8 MIPS | 32 MHz / 8 MIPS | 32 MHz / 8 MIPS |
| CLC / NCO / CWG | Yes | Yes | Yes | Yes | No |
| Functional Safety (FuSa) | Yes | Yes | Yes (high-temp) | Yes (extended) | No |
| Operating Temperature | -40 C to +85 C | -40 C to +85 C | -40 C to +150 C | -40 C to +125 C | -40 C to +85 C |
| AEC-Q100 Automotive | No (industrial grade) | No | Yes (high-temp VAO) | Yes (AEC-Q100 VAO) | No |
Key Differentiators
- Core Independent Peripherals (CLC/NCO/CWG) absent on older PIC16F1829 (vs PIC16F1829T-I/SS)
- Functional Safety (FuSa) qualification (vs PIC16F1829T-I/SS)
- Same SSOP-20 footprint with double the Flash of PIC16F18344 (vs PIC16F18344T-I/SS)
Design Notes
Estimated: at 32 MHz active CPU and 5.5 V supply, core current draw is roughly 6 mA (from the datasheet 40001795H typical curves), so a decoupling strategy of 100 nF + 1 uF + 10 uF placed within 5 mm of the VDD pin is required. For XLP sleep, switch to the 32 kHz LFINTOSC before SLEEP() and disable unused peripherals via PMDx to reach sub-uA standby. Connect all unused pins to VSS or VDD through the firmware weak pull-up/down to prevent shoot-through during deep sleep recovery.
Do not rely on the default PPS mapping after a programming reset on every variant - some PIC16F18345 pin packages expose fewer PPS-mappable pins than others (e.g., SSOP-20 has fewer than UQFN-20). Always consult the I/O count table on datasheet page for the specific package. Also, the MCLR pin (RA3) is multiplexed with the device programming pin; if RA3 is used as a digital input, ensure the 10 kohm pull-up to VDD is present and that the ICSP programming header does not load the line.
For SSOP-20, route the ICSP signals (RB6/RB7) with stubs no longer than 25 mm and avoid crossing them with switching power or PWM traces. Place a 100 nF X7R bypass within 3 mm of the VDD pin and a 10 uF bulk capacitor within 10 mm. If the PCB includes a long external antenna trace (e.g., for 2.4 GHz remote control), keep it at least 5 mm away from the SSOP-20 MCU footprint to avoid radiated noise coupling into the ADC inputs.
Compliance Information
RoHS and lead-free confirmed via Microchip product page. The base PIC16F18345T-I/SS is industrial grade (not AEC-Q100); choose PIC16F18345T-E/SSVAO or PIC16F18345T-H/SSVAO for automotive or high-temperature designs.
