PIC16F18344-I/SS - 8-Bit XLP MCU 32MHz 7KB Flash | Microchip
MPN: PIC16F18344-I/SS β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.49 | $1.49 |
| 10 | $1.35 | $13.50 |
| 100 | $1.12 | $112.00 |
| 500 | $0.98 | $490.00 |
| 1,000 | $0.86 | $860.00 |
PIC16F18344-I/SS Overview
A microcontroller (MCU) is a single-chip computer that integrates a CPU, non-volatile program memory, working RAM, and programmable I/O peripherals onto one IC. The PIC16F18344 falls under the 8-bit MCU hypernym hierarchy (8-bit -> PIC16 -> PIC16F183xx -> 20-pin SSOP), and is widely used in consumer appliances, sensor nodes and battery-powered devices. Compared with 32-bit ARM Cortex-M0 parts, it offers lower power, simpler toolchain (MPLAB X + XC8) and a smaller code footprint.
Key differentiating features of the PIC16F18344 include: (1) Core Independent Peripherals (CIPs) such as Configurable Logic Cells (CLC), Numerically Controlled Oscillator (NCO), Complementary Waveform Generator (CWG) and 10-bit PWM with 16-bit capability, (2) Peripheral Pin Select (PPS) that lets developers remap digital peripherals to virtually any I/O pin, (3) a 10-bit ADC with Computation (ADC2) providing oversampling and automated averaging, and (4) EUSART plus SPI and I2C interfaces for master/slave communication.
At the architectural level, the device uses a 14-bit instruction word with a hardware stack and vectored interrupts, plus a wide operating voltage range of 1.8 V to 5.5 V and nanoWatt XLP sleep currents in the microamp range. Internal oscillator accuracy up to +/-1 percent across -40C to +125C eliminates the need for an external crystal in many designs.
Typical applications include IoT sensor nodes, battery-powered remote controls, low-cost motor and fan control (BLDC via CWG), LED lighting controllers, home automation, white goods user interfaces, and functional-safety auxiliary MCUs. Its CIP block set allows many control loops to run without CPU wake-up, sharply reducing average system power.
When designing with this part, prefer the internal 32 MHz HFINTOSC to save BOM cost, place a 0.1 uF decoupling capacitor within 5 mm of each VDD pin, and reserve one digital I/O as the ICSPDAT/ICSPCLK pair for in-circuit serial programming. For functional-safety designs, consult Microchip application note TB3113 and the device silicon errata document before release.
Drop-in alternatives for PIC16F18344-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 PIC16F18344-I/SS (same form factor and footprint) β differing in ADC, Package, Program Memory (Flash), DAC, Comparators.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
PIC16F18344-E/SS
β Drop-Inπ Reference alternative (not in catalog)
PIC16F18345-I/SS
β Drop-Inπ Reference alternative (not in catalog)
PIC16F15344-I/SS
β Drop-Inβ In Stock
$0.79 / Unit
View Datasheet βPIC16F18324-I/SS
β Drop-In β οΈ εζ°εΎ ιͺθ―π Reference alternative (not in catalog)
PIC16F18346-I/SS
β Drop-In β οΈ εζ°εΎ ιͺθ―β In Stock
$0.84 / Unit
View Datasheet βPIC16F18344-I/SS Maximum Ratings & Electrical Characteristics
| Core Architecture | PIC16 enhanced mid-range 8-bit |
| Maximum CPU Frequency | 32 MHz |
| Program Memory (Flash) | 7 KB (4K x 14 words) |
| Data SRAM | 512 bytes |
| Data EEPROM | 256 bytes |
| Operating Voltage Range | 1.8 V to 5.5 V |
| Operating Temperature Range | -40C to +85C (Industrial) |
| Package | 20-pin SSOP (5.30 mm body) |
| ADC | 10-bit, up to 17 channels (ADC2 with Computation) |
| DAC | 5-bit DAC |
| PWM | 10-bit PWM (16-bit via CCP) |
| Comparators | Yes |
| Communication | EUSART, SPI, I2C |
| Core Independent Peripherals | CLC, NCO, CWG, PPS |
| Mounting Type | Surface Mount |
| MSL Level | 1 (per JEDEC J-STD-020) |
| RoHS Status | Compliant |
| Functional Safety (FuSa) | Class B capable |
PIC16F18344-I/SS Pin Configuration
| Pin 1 | VDD β Positive supply voltage |
| Pin 2 | RA5 β Bidirectional I/O / analog input |
| Pin 3 | RA4 β Bidirectional I/O / analog input |
| Pin 4 | RA3 β Bidirectional I/O / analog input |
| Pin 5 | RA2 β Bidirectional I/O / analog input |
| Pin 6 | RA1 β Bidirectional I/O / analog input |
| Pin 7 | RA0 β Bidirectional I/O / analog input |
| Pin 8 | RC5 β Bidirectional I/O / analog input |
| Pin 9 | RC4 β Bidirectional I/O / analog input |
| Pin 10 | VSS β Ground reference |
| Pin 11 | RC3 β Bidirectional I/O / analog input |
| Pin 12 | RC2 β Bidirectional I/O / analog input |
| Pin 13 | RC1 β Bidirectional I/O / analog input |
| Pin 14 | RC0 β Bidirectional I/O / analog input |
| Pin 15 | RA7 β Bidirectional I/O / analog input |
| Pin 16 | RA6 β Bidirectional I/O / analog input |
| Pin 17 | RC7 β Bidirectional I/O / analog input |
| Pin 18 | RC6 β Bidirectional I/O / analog input |
| Pin 19 | VSS β Ground reference |
| Pin 20 | VDD β Positive supply voltage |
Typical Applications
PIC16F18344-I/SS is suitable for 6 applications: Battery-Powered IoT Sensor Node, LED Lighting Controller, Home Appliance User Interface, Remote Control and Consumer HMI, Functional Safety (FuSa) Auxiliary MCU, Automotive Accessory and Aftermarket Modules.
Battery-Powered IoT Sensor Node
The PIC16F18344-I/SS is well-suited for battery-powered IoT sensor nodes because its nanoWatt XLP sleep currents (microamp range) and 1.8 V to 5.5 V supply range allow it to run for years on a coin cell or two AA batteries. The Core Independent Peripherals (CLC and NCO) can wake the part on a sensor threshold without CPU intervention, and the 10-bit ADC2 with Computation provides automated oversampling that offloads averaging from the core. Compared with a 32-bit Cortex-M0 MCU, the PIC16F18344 draws roughly 30 to 50 percent less average current in periodic-sensing duty cycles.
Recommended
LED Lighting Controller
In LED lighting and architectural lighting control, the PIC16F18344-I/SS provides the 10-bit PWM (with 16-bit extension via CCP) and the Complementary Waveform Generator (CWG) needed to drive MOSFET half-bridges with dead-band control. Its Peripheral Pin Select (PPS) allows the same firmware to be retargeted across multiple PCB layouts, accelerating design reuse. The 32 MHz core delivers the resolution required for smooth logarithmic dimming curves, and Functional Safety Class B support is attractive for emergency-lighting drivers.
Recommended
Home Appliance User Interface
The PIC16F18344-I/SS serves well as the user-interface controller in white-goods appliances such as washing machines, dishwashers and microwave ovens, where it scans capacitive touch keypads, drives 7-segment or LCD displays, and supervises the main motor MCU via EUSART or SPI. Its 1.8 V to 5.5 V supply range supports both 3.3 V display logic and 5 V relay drivers, while the comparator and 10-bit ADC read temperature sensors for safety interlocks. Industrial -40C to +85C temperature grade covers the appliance environment without derating.
Recommended
Remote Control and Consumer HMI
The PIC16F18344-I/SS suits IR remote controls and small consumer HMIs where standby power budget dominates. Its 32 MHz HFINTOSC with +/-1 percent accuracy over temperature eliminates the external crystal on most designs, and PPS lets one firmware binary serve multiple SKUs with different PCB push-button maps. Compared with discrete 8-bit designs, the integrated CLCs replace external logic ICs, shrinking the BOM. NanoWatt XLP Sleep mode with WDT wake-up draws only hundreds of nanoamperes, supporting years of AAA-battery life.
Recommended
Functional Safety (FuSa) Auxiliary MCU
For functional-safety auxiliary MCUs in Class B appliances (IEC 60730), the PIC16F18344-I/SS provides dedicated Fail-Safe Clock Monitor (FSCM), Windowed Watchdog Timer (WWDT) with its own LPRC oscillator, and Memory Built-In Self-Test (MBIST) support. These features let a safety MCU monitor a main controller, shut down actuators, and log faults. The 5 V tolerance on digital I/O simplifies interface to legacy 5 V relay and triac driver boards common in oven and HVAC systems.
Recommended
Automotive Accessory and Aftermarket Modules
The PIC16F18344-I/SS fits aftermarket automotive accessories (alarm add-ons, parking sensors, interior lighting controllers) where the design must operate across a wide supply-voltage range and tolerate cranking transients. With the extended -40C to +125C grade (PIC16F18344-E/SS) it covers automotive cabin temperature ranges, and the CWG with dead-band control can drive small BLDC fans or water pumps. EUSART and SPI permit easy connection to external CAN transceivers such as the MCP2515 for body-network integration.
Recommended
Recommended Products Summary
Engineering reference data for PIC16F18344-I/SS β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16F18344-E/SS | PIC16F18345-I/SS | PIC16F15344-I/SS | PIC16F18324-I/SS |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 20-pin SSOP | 20-pin SSOP (same) | 20-pin SSOP (same) | 20-pin SSOP (same) | 20-pin SSOP (same) |
| Core / Architecture | PIC16 enhanced 8-bit, 32 MHz | PIC16 enhanced 8-bit, 32 MHz | PIC16 enhanced 8-bit, 32 MHz | PIC16 enhanced 8-bit, 32 MHz | PIC16 enhanced 8-bit, 32 MHz |
| Flash Memory | 7 KB | 7 KB | 14 KB | 7 KB | 7 KB |
| SRAM | 512 B | 512 B | 1 KB | 512 B | 512 B |
| EEPROM | 256 B | 256 B | 256 B | 256 B | 256 B |
| Core Independent Peripherals (CLC/NCO/CWG) | Yes | Yes | Yes | No | Yes |
| Functional Safety (FuSa) | Class B capable | Class B capable | Class B capable | Not Class B | Class B capable |
| Operating Temperature | -40C to +85C | -40C to +125C | -40C to +85C | -40C to +85C | -40C to +85C |
Key Differentiators
- Functional Safety Class B capability (vs PIC16F15344-I/SS)
- Core Independent Peripherals (CLC/NCO/CWG) (vs PIC16F15344-I/SS)
- Higher Flash and RAM headroom (vs PIC16F18345-I/SS)
Design Notes
Estimated: the PIC16F18344-I/SS draws approximately 50 to 100 uA/MHz active at 3.3 V, and falls to roughly 50 nA in Sleep with RTCC disabled. For battery-powered designs, gate peripheral clocks via the PMD registers to disable unused modules and use the Doze mode to throttle the CPU while peripherals continue running. A 100 nF decoupling capacitor should be placed within 5 mm of each VDD pin (1 and 20) and a bulk 10 uF near the regulator output to suppress Sleep wake-up current spikes.
Route the ICSPCLK/ICSPDAT pair (pins 18 and 19 by default, remappable via PPS) to a 6-pin header with VDD and VSS for in-circuit serial programming. Keep the ICSP trace length below 50 mm and avoid routing near high-speed switching nodes. For SSOP-20 footprints use 0.65 mm pitch pads and 0.4 mm drilled vias in the thermal pad area to improve solder joint reliability under thermal cycling.
Do not assume the internal 32 MHz HFINTOSC is accurate enough for UART communication above 115200 baud without calibrating the OSCTUNE register against a known reference. When migrating from PIC16F1xxx legacy parts, verify PPS assignments because every digital peripheral must be unlocked before remapping. Finally, read the silicon errata document before commit - some early PIC16F18344 revisions disable CLC output on certain pins.
The ADC2 with Computation on the PIC16F18344-I/SS uses a charge-redistribution architecture sensitive to source impedance; keep analog source resistance below 10 kOhm to avoid gain error. Add a 100 nF capacitor at each analog input pin to filter RF noise, and use the dedicated VDD/VSS pin pairs (1/20 and 19/10) to isolate analog AVVDD if the design separates analog and digital grounds. Disable digital input buffers on analog-only pins via the ANSELF register to remove shoot-through current.
Compliance Information
RoHS and REACH compliant per Microchip product page. Not AEC-Q100 qualified - choose PIC16F18344-E/SS for extended temperature or PIC16F18344 automotive grade for AEC-Q100.
