PIC16F18445-E/GZ - 8-bit 32MHz 14KB Flash XLP MCU | Microchip
MPN: PIC16F18445-E/GZ ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.82 | $1.82 |
| 10 | $1.64 | $16.40 |
| 100 | $1.39 | $139.00 |
| 500 | $1.18 | $590.00 |
| 1,000 | $1.02 | $1,020.00 |
PIC16F18445-E/GZ Overview
What is an 8-bit PIC microcontroller? An 8-bit MCU is a microcontroller whose internal data path, ALU and registers are 8 bits wide; the PIC architecture (Peripheral Interface Controller) is a Harvard RISC design from Microchip widely used in low-power and cost-sensitive embedded designs. The PIC16F18445 sits in the hierarchy: MCU -> 8-bit MCU -> PIC16 family -> PIC16F184xx sub-family -> functional-safety / XLP line, combining Core Independent Peripherals (CIPs), high-resolution analog, and eXtreme Low-Power modes for general-purpose and battery-powered applications.
Key features include a 12-bit Analog-to-Digital Converter with Computation (ADCC), a 5-bit/8-bit Digital-to-Analog Converter (DAC), two PWMs, a Complementary Waveform Generator (CWG), a comparator, EUSART, SPI, and I2C communication peripherals. The device is rated for the extended -40C to +125C industrial temperature range (the trailing E in the part number indicates the extended industrial grade) and offers multiple low-power sleep modes with nanoWatt XLP technology for energy harvesting and battery applications.
The PIC16F18445-E/GZ uses the enhanced mid-range PIC16 core with 49 instructions, hardware multiply, and a 16-level hardware stack. On-chip peripherals such as the Peripheral Pin Select (PPS) allow flexible signal routing, while the Configurable Logic Cell (CLC) and Signal Measurement Timer (SMT) provide hardware-level state-machine and timing functions without CPU intervention. These CIPs reduce firmware complexity and deterministic latency.
Typical applications include low-power IoT sensor nodes, consumer appliance controls, battery-powered instruments, LED lighting controllers, functional-safety sensor interfaces, and small home-automation devices. The combination of ADCC + DAC + CWG makes the part particularly suitable for closed-loop control of LEDs, fans, and small motor drivers.
When designing with the PIC16F18445-E/GZ, ensure the exposed thermal pad is soldered to the PCB ground plane for thermal dissipation and mechanical reliability, and use MPLAB X IDE with XC8 compiler for firmware development. Programming is supported through MPLAB PICkit, ICD, or Curiosity development toolchains.
This page synthesizes distributor pricing, same-package drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
Drop-in alternatives for PIC16F18445-E/GZ — 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/GZ (same form factor and footprint) — differing in ADC, Core Architecture, DAC, Package, Operating Temperature.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16F18445-I/GZ
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$0.78 / Unit
View Datasheet →PIC16F18425-E/GZ
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
PIC16F18346-E/GZ
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$1.28 / Unit
View Datasheet →PIC16F18345-E/GZ
✅ Drop-In✓ In Stock
$0.83 / Unit
View Datasheet →PIC16F15345-E/GZ
✅ Drop-In✓ In Stock
$1.45 / Unit
View Datasheet →PIC16F18445-E/GZ Maximum Ratings & Electrical Characteristics
| Core Architecture | PIC 8-bit enhanced mid-range |
| Family | PIC16F184xx (XLP, Functional Safety) |
| Program Memory (Flash) | 14 KB (8K x 14 words) |
| Data RAM | 1 KB |
| Maximum CPU Frequency | 32 MHz |
| ADC | 12-bit ADCC (Analog-to-Digital Converter with Computation) |
| DAC | 5-bit / 8-bit DAC |
| PWM Channels | 2x PWMs |
| Other Analog | Comparator, CWG (Complementary Waveform Generator) |
| Communication | EUSART, SPI, I2C |
| Core Independent Peripherals (CIPs) | CLC, SMT, PPS, CWG, NCO |
| Package | 20-pin UQFN (4x4 mm) with exposed pad |
| Mounting Type | Surface Mount |
| Temperature Grade (E suffix) | Extended Industrial -40C to +125C |
| Low-Power Technology | eXtreme Low-Power (XLP) nanoWatt |
| RoHS Status | Compliant |
| Lead-Free | Yes |
PIC16F18445-E/GZ Pin Configuration
| Pin 1 | RA5 — GPIO / OSC2 / CLKOUT |
| Pin 2 | RA4 — GPIO / OSC1 / CLKIN |
| Pin 3 | RA3 — GPIO / MCLR / VPP |
| Pin 4 | RA2 — GPIO / DAC / analog |
| Pin 5 | RA1 — GPIO / ICSPCLK |
| Pin 6 | RA0 — GPIO / ICSPDAT |
| Pin 7 | VDD — Positive supply |
| Pin 8 | VSS — Ground |
| Pin 9 | RC0 — GPIO / analog |
| Pin 10 | RC1 — GPIO / analog |
| Pin 11 | RC2 — GPIO / analog |
| Pin 12 | RC3 — GPIO / analog / SCL |
| Pin 13 | RC4 — GPIO / analog / SDA |
| Pin 14 | RC5 — GPIO / analog |
| Pin 15 | RC6 — GPIO / TX/CK |
| Pin 16 | RC7 — GPIO / RX/DT |
| Pin 17 | RB7 — GPIO |
| Pin 18 | RB6 — GPIO / ICSPCLK |
| Pin 19 | RB5 — GPIO / analog |
| Pin 20 | RB4 — GPIO / analog |
| Pin 21 | EP — Exposed thermal pad (connect to VSS/GND) |
Typical Applications
PIC16F18445-E/GZ is suitable for 6 applications: Battery-Powered IoT Sensor Nodes, Consumer Appliance User Interface Controllers, LED Lighting Drivers and Dimming Controllers, Functional-Safety Sensor Interfaces, Small Fan and DC Motor Speed Controllers, Portable Medical and Wellness Devices.
Battery-Powered IoT Sensor Nodes
The PIC16F18445-E/GZ is well suited for battery-powered IoT sensor nodes because its eXtreme Low-Power (XLP) technology delivers sub-microamp sleep currents while the integrated 12-bit ADCC performs accurate sensor measurements without waking the CPU heavily. The 14 KB Flash and 1 KB RAM accommodate sensor-fusion firmware plus a small RF or LoRa driver. With the extended industrial -40C to +125C temperature grade, the device operates reliably in outdoor enclosures and is placed between the coin-cell battery and the sensor load with hardware CIPs handling timing and thresholding autonomously.
Recommended
Consumer Appliance User Interface Controllers
The PIC16F18445-E/GZ fits consumer appliance user interface controllers because the CWG peripheral drives LEDs and piezo buzzers with deterministic hardware timing, while the 12-bit ADCC reads capacitive touch or rotary encoder inputs. The 32 MHz CPU and 14 KB Flash support graphical menu firmware, and the extended -40C to +125C rating handles kitchen and laundry environments. Designers place the MCU between the appliance's 5V rail and the keypad/display with the CLC peripheral implementing glue logic in hardware, eliminating external gates.
Recommended
LED Lighting Drivers and Dimming Controllers
The PIC16F18445-E/GZ is ideal for LED lighting drivers because the Complementary Waveform Generator (CWG) produces complementary PWM outputs with dead-band control, perfect for synchronous buck or boost LED driver topologies. The 12-bit ADCC reads ambient light sensors for closed-loop dimming, and the 5/8-bit DAC provides analog reference levels for constant-current driver ICs. The 32 MHz CPU runs lighting control algorithms at high refresh rates, and the XLP sleep modes reduce standby power in dimmer switches to nanoamp levels for Energy Star compliance.
Recommended
Functional-Safety Sensor Interfaces
The PIC16F18445-E/GZ supports functional-safety sensor interfaces because the PIC16F184xx family includes FuSa features such as a Windowed Watchdog Timer, Deadman Timer, hardware CRC, and Memory Built-In Self-Test (MBIST) for diagnostic coverage. The 12-bit ADCC with computation provides oversampling and averaging for redundant sensor readings, while the comparator enables hardware-level threshold detection independent of the CPU. This makes the part suitable for safety-related accessory functions in industrial equipment.
Recommended
Small Fan and DC Motor Speed Controllers
The PIC16F18445-E/GZ is well matched to small fan and DC motor speed controllers because the CWG generates complementary drive signals for half-bridge FET drivers with programmable dead-band, and the 12-bit ADCC samples back-EMF or tachometer feedback for closed-loop RPM regulation. The 32 MIPS CPU executes PID control loops comfortably, and the extended -40C to +125C rating handles the thermal environment near motor housings. XLP sleep modes cut standby current to a few microamps for always-on appliance controllers.
Recommended
Portable Medical and Wellness Devices
The PIC16F18445-E/GZ fits portable medical and wellness devices because XLP sleep modes extend battery life to weeks while the 12-bit ADCC captures high-resolution readings from pulse oximeter, thermometer, or heart-rate sensors. The 14 KB Flash holds calibration tables and small DSP routines, while the EUSART/SPI/I2C peripherals connect to BLE modules for wireless data transfer. The extended industrial temperature rating and functional-safety peripherals support wellness applications that demand reliable measurement across varied environments.
Recommended
Recommended Products Summary
Engineering reference data for PIC16F18445-E/GZ — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16F18445-I/GZ | PIC16F18425-E/GZ | PIC16F18346-E/GZ | PIC16F18345-E/GZ | PIC16F15345-E/GZ |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 20-pin UQFN (4x4 mm) | 20-pin UQFN (4x4 mm) - same | 20-pin UQFN (4x4 mm) - same | 20-pin UQFN (4x4 mm) - same | 20-pin UQFN (4x4 mm) - same | 20-pin UQFN (4x4 mm) - same |
| Flash Memory | 14 KB | 14 KB | 14 KB | 28 KB | 14 KB | 14 KB |
| RAM | 1 KB | 1 KB | 1 KB | 2 KB | 1 KB | 1 KB |
| CPU Speed | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz |
| ADC Resolution | 12-bit ADCC | 12-bit ADCC | 12-bit ADCC | 12-bit ADCC | 10-bit ADC | 10-bit ADC |
| Temperature Grade | Extended -40C to +125C | Industrial -40C to +85C | Extended -40C to +125C | Extended -40C to +125C | Extended -40C to +125C | Extended -40C to +125C |
| Core Independent Peripherals | CLC, SMT, PPS, CWG, NCO | CLC, SMT, PPS, CWG, NCO | CLC, SMT, PPS, CWG, NCO | CLC, PPS, CWG, NCO (no SMT) | CLC, PPS, CWG, NCO (no SMT) | CLC, PPS, CWG (no SMT, no NCO) |
| Functional Safety Features | FuSa (WDT, DMT, CRC, MBIST) | FuSa (WDT, DMT, CRC, MBIST) | FuSa (WDT, DMT, CRC, MBIST) | Standard | Standard | Standard |
Key Differentiators
- Newest-generation CIPs including SMT (Signal Measurement Timer) (vs PIC16F18345-E/GZ)
- 12-bit ADCC with computation vs 10-bit ADC (vs PIC16F15345-E/GZ)
- Functional Safety (FuSa) peripherals integrated (vs PIC16F18346-E/GZ)
- Extended industrial temperature grade (-40C to +125C) (vs PIC16F18445-I/GZ)
Design Notes
The PIC16F18445-E/GZ supports a wide Vdd range (refer to datasheet for exact limits) and integrates brown-out reset (BOR) and low-voltage detect (LVD) peripherals for power-supply monitoring. For battery applications, enable the nanoWatt XLP sleep mode by configuring the空闲 peripherals off and using the SMT for periodic wake-up. Add a 100 nF decoupling capacitor on VDD as close to the pin as possible, with a 10 uF bulk capacitor on the main supply rail for transient suppression during RF transmission.
The 20-pin UQFN (4x4 mm) package uses an exposed thermal pad on the underside that must be soldered to a sufficiently large copper pour on the PCB (at least 25 mm² recommended). This pad serves both as the main thermal dissipation path and as a low-impedance ground reference. Without proper soldering, the junction temperature can rise excessively under sustained ADC sampling at 32 MHz, reducing long-term reliability in the upper end of the -40C to +125C operating range.
Use Peripheral Pin Select (PPS) to remap EUSART, SPI, I2C, and PWM outputs to convenient GPIO pins, simplifying PCB routing when the default pinout would otherwise require long traces across the board. Keep the 32 MHz crystal or external clock traces short and surrounded by a ground guard ring to minimize EMI. For ADC accuracy, route analog signals away from PWM switching traces and place the ADCC input capacitor close to the pin to reduce charge kickback noise.
Do not leave the MCLR pin floating; tie it to VDD through a 10 kΩ pull-up resistor or use the internal MCLR configuration. The ICSPDAT/ICSPCLK pins (RA0/RA1) are multiplexed with GPIO and must be considered when designing the PCB to avoid in-circuit programming conflicts. When using the 12-bit ADCC at full throughput, ensure the input source impedance is below 10 kΩ to avoid gain errors, and enable the ADCC charge pump for higher sampling rates above 200 ksps.
Compliance Information
RoHS compliant per Microchip product page; AEC-Q100 not qualified (industrial grade only - choose PIC16F18445T-E/GZVAO for automotive grade).
