PIC16F18445-E/SS - 14KB Flash 8-bit MCU 32MHz SSOP-20 | Microchip
MPN: PIC16F18445-E/SS ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.73 | $1.73 |
| 10 | $1.56 | $15.60 |
| 100 | $1.38 | $138.00 |
| 500 | $1.21 | $605.00 |
| 1,000 | $1.05 | $1,050.00 |
| 3,000 | $0.88 | $2,640.00 |
PIC16F18445-E/SS Overview
An 8-bit microcontroller (MCU) is a single-chip computer built around an 8-bit data-path CPU, integrating program memory (FLASH/ROM), data memory (SRAM), EEPROM, and a mix of analog/digital peripherals. Within the broader taxonomy, an MCU belongs to microcontrollers -> integrated circuits -> semiconductors. The PIC16F18445 is engineered for general-purpose and low-power applications where deterministic interrupt response, peripheral integration and long battery life are mandatory.
Key differentiating features include 14 KB self-programmable FLASH, 256 bytes of EEPROM, 1 KB SRAM, a 12-bit ADC with Computation (ADCC), a 5-bit DAC, two comparators with 5-bit DAC reference, two PWM modules with Complementary Waveform Generator (CWG), an Enhanced Universal Synchronous/Asynchronous Receiver/Transmitter (EUSART) and SPI/I2C. The CIPs architecture lets the peripherals (PWM, CWG, ADC, comparators, timers) operate without CPU intervention, freeing the core for low-power sleep.
The PIC16F18445-E/SS uses Microchip's enhanced mid-range 16-bit instruction set with a 49-instruction opcode set, an 8-level hardware stack, and internal oscillator selectable from 32 kHz to 32 MHz. Functional Safety (FuSa) variants exist for safety-critical applications. The 'E' temperature grade denotes -40C to +125C industrial operating range.
Typical applications include IoT sensor nodes, battery-powered instrumentation, low-power wireless modules, consumer white goods, automotive body controllers and LED lighting control. The 20-pin SSOP footprint simplifies hand-prototyping while still supporting 18 I/O lines. Compact 8-bit microcontrollers like the PIC16F18445 are widely chosen when cost, power efficiency and predictable real-time behaviour dominate design priorities.
When designing with this part, place a 0.1 uF decoupling capacitor within 3 mm of the VDD pin and a bulk capacitor on the AVDD analog rail if used. The internal oscillator is factory calibrated to +/-2% across voltage and temperature, eliminating an external crystal in most general-purpose designs. For RF-sensitive or USB-class timing accuracy, route an external 32.768 kHz crystal to the SOSC pins instead.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the standalone manufacturer datasheet, so procurement and embedded engineers can compare the PIC16F18445 against pin-compatible PIC16F184xx family members and competing 8-bit MCUs in a single view.
Drop-in alternatives for PIC16F18445-E/SS — 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 PIC16F18445-E/SS (same form factor and footprint) — differing in Operating Temperature, Package, ADC, Program Memory (Flash), I/O Pins.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16F18444-E/SO
✅ Drop-In✓ In Stock
$0.95 / Unit
View Datasheet →PIC16F18346-E/SS
✅ Drop-In✓ In Stock
$1.55 / Unit
View Datasheet →PIC16F18345-E/SS
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16F1827-E/SS
✅ Drop-In✓ In Stock
$1.55 / Unit
View Datasheet →PIC16F1829-E/SS
✅ Drop-In✓ In Stock
$0.54 / Unit
View Datasheet →PIC16F1826-I/SS
✅ Drop-In✓ In Stock
$1.18 / Unit
View Datasheet →PIC16F18445-E/SS Maximum Ratings & Electrical Characteristics
| Core Architecture | PIC16 8-bit Enhanced Mid-Range |
| Program Memory (FLASH) | 14 KB (8K x 14 words) |
| Data SRAM | 1 KB |
| Data EEPROM | 256 bytes |
| Maximum CPU Speed | 32 MHz |
| Instruction Set Width | 14-bit (49 instructions) |
| Operating Voltage (VDD) | 1.8 V to 5.5 V |
| I/O Pins | 18 |
| ADC | 12-bit ADCC (Analog-to-Digital Converter with Computation) |
| DAC | 5-bit DAC |
| Comparators | 2 |
| PWM Channels | 2 (with CWG) |
| Timers | 11 (8/16-bit selectable) |
| Communication | 1x EUSART, 2x MSSP (SPI/I2C) |
| Watchdog Timer | WWDT (Windowed) |
| Package | 20-pin SSOP (0.209 inch / 5.30 mm body width) |
| Operating Temperature | -40 C to +125 C (E = industrial grade) |
| Technology | XLP eXtreme Low-Power CMOS |
| Programming Interface | ICSP (In-Circuit Serial Programming) |
| RoHS Status | Compliant |
PIC16F18445-E/SS Pin Configuration
| Pin 1 | VDD — Positive power supply |
| Pin 2 | RA5 — Bidirectional I/O / analog input |
| Pin 3 | RA4 — Bidirectional I/O |
| Pin 4 | RA3/MCLR — Bidirectional I/O / Master Clear (reset) |
| Pin 5 | RA2 — Bidirectional I/O / analog input |
| Pin 6 | RA1 — Bidirectional I/O / analog input |
| Pin 7 | RA0 — Bidirectional I/O / analog input |
| Pin 8 | RC0 — Bidirectional I/O / analog input |
| Pin 9 | RC1 — Bidirectional I/O / analog input |
| Pin 10 | RC2 — Bidirectional I/O / analog input |
| Pin 11 | RC3 — Bidirectional I/O / analog input |
| Pin 12 | RC4 — Bidirectional I/O / analog input |
| Pin 13 | RC5 — Bidirectional I/O / analog input |
| Pin 14 | RC6 — Bidirectional I/O / TX/CK (EUSART) |
| Pin 15 | RC7 — Bidirectional I/O / RX/DT (EUSART) |
| Pin 16 | RB7 — Bidirectional I/O / ICSPCLK |
| Pin 17 | RB6 — Bidirectional I/O / ICSPDAT |
| Pin 18 | RB5 — Bidirectional I/O / analog input |
| Pin 19 | RB4 — Bidirectional I/O / analog input |
| Pin 20 | VSS — Ground reference |
Typical Applications
PIC16F18445-E/SS is suitable for 6 applications: Battery-Powered IoT Sensor Node, Industrial Sensor Transmitter (4-20 mA / 0-10 V), Consumer White Goods Control Board, Automotive Body Electronics (Lighting / Wipers), Smart LED Lighting and Signage Controller, Portable Medical and Wellness Devices.
Battery-Powered IoT Sensor Node
The PIC16F18445-E/SS suits battery-powered IoT sensor nodes because its XLP architecture draws roughly 50 uA/MHz active and sub-50 nA in sleep with RTCC running, extending coin-cell life into multi-year ranges. Its 12-bit ADCC samples analog sensors (temperature, light, soil moisture) at up to 300 ksps while hardware accumulation averages multiple conversions without waking the CPU. The EUSART handles UART-linked radios like LoRa or Sub-GHz transceivers; MSSP drives I2C/SPI sensors directly. Operating from 1.8-5.5 V makes the device compatible with single-cell Li-Ion, 2xAA alkaline, or energy-harvested supplies, and the 32 MHz HFINTOSC eliminates an external crystal, shrinking BOM cost and PCB area.
Recommended
Industrial Sensor Transmitter (4-20 mA / 0-10 V)
The PIC16F18445-E/SS fits industrial 4-20 mA / 0-10 V transmitters because its 12-bit ADCC with hardware averaging produces stable, low-noise measurements from bridge and RTD sensors. The 5-bit DAC and 32 MHz core implement linearization and PID compensation, while the 1.8-5.5 V range supports both 3.3 V logic and 5 V analog signal chains. The 20-pin SSOP footprint is mechanically robust for industrial enclosures, and the -40 C to +125 C operating range meets IEC 60068 environmental stress. The XLP sleep modes keep total module power below 5 mW for loop-powered 4-20 mA designs, and the integrated EUSART supports HART or Modbus RTU communication.
Recommended
Consumer White Goods Control Board
The PIC16F18445-E/SS is ideal for white-goods control boards (washing machines, dishwashers, microwave ovens) where the 12-bit ADCC reads temperature probes, water level sensors and motor current. Its two PWMs with Complementary Waveform Generator (CWG) drive induction-cooktop and motor-control power stages directly, while hardware comparators implement overcurrent protection without CPU intervention. With 14 KB FLASH it absorbs entire state-machine control programs, and the SSOP-20 footprint fits compact appliance PCAs. The device operates from 1.8-5.5 V, accommodating 5 V motor drivers and 3.3 V digital logic on the same board. CIPs peripherals shorten development cycles for appliance engineers.
Recommended
Automotive Body Electronics (Lighting / Wipers)
The PIC16F18445-E/SS handles automotive body modules such as interior lighting, wiper controllers and seat-position drivers because its -40 C to +125 C industrial grade survives under-dash thermal stress. The 32 MHz core and CWG deliver flicker-free PWM dimming at 20 kHz above the audible band. The 12-bit ADCC monitors current-sense shunts for short-circuit detection, while the integrated EUSART supports LIN bus stacks commonly used in body control networks. Operating from 1.8-5.5 V lets the device tolerate crank-drop events down to 4.5 V on a 12 V battery rail, and the SSOP-20 footprint simplifies hand-rework for service technicians. PIC16F184xx devices are widely used for AEC-Q100 style applications when Q-grade variants are selected.
Recommended
Smart LED Lighting and Signage Controller
The PIC16F18445-E/SS fits smart LED lighting controllers because its two PWMs with CWG and 32 MHz clock produce smooth high-frequency dimming free of audible noise, while the 5-bit DAC and comparators generate constant-current analog loops for LED strings. The MSSP ports drive SPI daisy-chain addressable LEDs (WS2812 / APA102) without external glue logic. Operating from 1.8-5.5 V supports both 3.3 V digital logic and 5 V analog dimming, and the XLP sleep current below 50 nA makes the device attractive for battery-backup emergency luminaires. The 14 KB FLASH supports DMX-512 / DALI protocol stacks, easing integration into architectural lighting fixtures.
Recommended
Portable Medical and Wellness Devices
The PIC16F18445-E/SS suits portable medical and wellness devices such as pulse oximeters, blood-pressure cuffs and connected thermometers because its XLP low-power technology keeps continuous-monitoring devices running on small Li-Ion batteries for weeks. The 12-bit ADCC samples photoplethysmography (PPG) and temperature signals with hardware averaging, while the integrated DAC drives bias currents for analog front-ends. Functional Safety (FuSa) variants of the PIC16F18445 family are available for safety-critical medical applications per IEC 60730. The device's 14 KB FLASH supports algorithm storage for heart-rate calculation, and the EUSART links to Bluetooth / BLE modules for smartphone connectivity. The SSOP-20 footprint supports compact wearable form factors.
Recommended
Recommended Products Summary
Engineering reference data for PIC16F18445-E/SS — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16F18444-E/SO | PIC16F18346-E/SS | PIC16F18345-E/SS | PIC16F1827-E/SS |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 20-pin SSOP | 20-pin SOIC | 20-pin SSOP - same | 20-pin SSOP - same | 20-pin SSOP - same |
| Core Architecture | PIC16 8-bit Enhanced Mid-Range | PIC16 8-bit Enhanced Mid-Range | PIC16 8-bit Enhanced Mid-Range | PIC16 8-bit Enhanced Mid-Range | PIC16 Enhanced Mid-Range (older CIP) |
| FLASH Program Memory | 14 KB | 14 KB | 14 KB | 14 KB | 7 KB |
| Data SRAM | 1 KB | 1 KB | 1 KB | 1 KB | 384 B |
| Data EEPROM | 256 bytes | 256 bytes | 256 bytes | 256 bytes | 256 bytes |
| Maximum CPU Speed | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz |
| ADC | 12-bit ADCC | 12-bit ADCC | 12-bit ADCC | 12-bit ADC | 10-bit ADC |
| EUSART | Yes | No | Yes | Yes | No (EUSART not present) |
| 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 |
Key Differentiators
- Doubles FLASH over the legacy PIC16F1827 family (vs PIC16F1827-E/SS)
- Adds EUSART for asynchronous/RS-485 communication (vs PIC16F18444-E/SO)
- 12-bit ADCC with hardware averaging (vs PIC16F18345-E/SS)
Design Notes
Place a 100 nF decoupling capacitor within 3 mm of the VDD pin (pin 1) and a bulk 1-10 uF electrolytic/tantalum on the same VDD trace. The PIC16F18445-E/SS has separate analog (AVDD/AVSS) and digital supplies on larger variants; on the SSOP-20 they share the same pins. According to the PIC16F184xx datasheet, AVDD must be tied to VDD if the ADC is unused. A series ferrite bead between digital and analog rails reduces ADC noise coupling in mixed-signal designs.
Route the ICSP clock and data lines (RB6/ICSPDAT, RB7/ICSPCLK) directly to a 2x3 or 1x6 header with series 100 ohm termination near the connector to keep debug/programming reliable. The internal HFINTOSC is factory calibrated to +/-2% across voltage and temperature, so an external crystal is not required for general-purpose designs; if USB or RF timing is needed, add a 32.768 kHz crystal to the SOSC pins (RA4/RA5) for RTC reference. Keep RC6/RC7 (EUSART TX/RX) traces short and impedance-matched when driving long cables.
Avoid the common pitfall of leaving RA3/MCLR floating - on the PIC16F18445-E/SS this pin defaults to MCLR mode and must be tied to VDD through a 10 kohm pull-up resistor, or used as a reset input. Confirmed in the PIC16F184xx datasheet: disabling MCLR requires the MCLRE configuration bit to be cleared. Also note that pin 1 is VDD (not VSS as on some legacy 20-pin PICs); reversing supply polarity on SSOP-20 may destroy the device.
Compliance Information
RoHS compliant per Microchip product page. -E temperature grade denotes industrial -40C to +125C range; AEC-Q100 qualification requires selection of automotive-grade PIC16F18445 variants (not in the SSOP-20 -E/SS suffix).
