PIC16F18875-E/P - 8-bit 32MHz 14KB Flash MCU | Microchip | DIP-40
MPN: PIC16F18875-E/P β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $2.65 | $2.65 |
| 10 | $2.42 | $24.20 |
| 100 | $2.18 | $218.00 |
| 500 | $1.95 | $975.00 |
| 1,000 | $1.74 | $1,740.00 |
PIC16F18875-E/P Overview
An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, RAM, non-volatile program memory, and peripherals on one die. The PIC16F18875 belongs to the Microchip PIC mid-range family: PIC microcontroller -> 8-bit MCU -> embedded controller -> semiconductor. It is optimized for deterministic, low-power control tasks where advanced DSP or 32-bit performance is unnecessary.
Key features include 1 KB of SRAM, 256 bytes of EEPROM, integrated CIP blocks such as CRC/SCAN, Hardware Limit Timer (HLT), and CWG/NCO/DSM peripherals, plus multiple communication interfaces (UART, SPI, I2C). The XLP technology delivers low sleep current, making the device suitable for battery-powered sensor and IoT applications. The 40-pin PDIP package simplifies prototyping and breadboarding while supporting a wide operating voltage range from 2.3 V to 5.5 V.
The architecture combines an 8-bit RISC-style enhanced mid-range core with a 14-bit instruction word, three 16-bit timers, and a 10-bit ADC with computation, supporting automated sensor measurements and threshold-based wake-up. The Functional Safety (FuSa) documentation package assists customers building IEC 61508 and ISO 26262 systems, allowing a single platform to serve industrial and automotive end products.
Typical applications include low-power IoT sensor nodes, battery-powered home automation, industrial control modules, LED lighting controllers, and consumer appliance interfaces. The DIP-40 form factor is especially popular in education, hobbyist, and prototype designs.
When designing with this MCU, ensure the MCLR pin is properly pulled up and decoupling capacitors (100 nF and 10 Β΅F) are placed close to VDD/AVDD/VBAT pins. For low-power operation, take advantage of the XLP sleep modes and configure peripherals to remain inactive when not needed.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone.
Drop-in alternatives for PIC16F18875-E/P 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 PIC16F18875-E/P (same form factor and footprint) β differing in Package, ADC, Program Memory (Flash), Mounting Type, Operating Temperature.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
PIC16F18875-I/P
β Drop-Inπ Reference alternative (not in catalog)
PIC16F18855-E/P
β Drop-Inπ Reference alternative (not in catalog)
PIC16F18876-E/P
β Drop-Inβ In Stock
$2.04 / Unit
View Datasheet βPIC16F18877-E/P
β Drop-Inπ Reference alternative (not in catalog)
PIC16LF18875-I/P
β Drop-Inπ Reference alternative (not in catalog)
PIC16F18875-E/MV
β Drop-Inβ In Stock
$1.05 / Unit
View Datasheet βPIC16F18875-E/P Maximum Ratings & Electrical Characteristics
| Core Processor | PIC 8-bit enhanced mid-range |
| Core Size | 8-Bit |
| Program Memory Size | 14 KB (8K x 14 words) FLASH |
| RAM Size | 1 KB |
| EEPROM Size | 256 Bytes |
| Maximum CPU Speed | 32 MHz |
| Operating Voltage Range | 2.3 V to 5.5 V |
| Number of I/O Pins | 36 |
| Package | 40-pin PDIP (DIP-40) |
| Mounting Type | Through-Hole |
| Operating Temperature | -40 C to +125 C |
| Program Memory Type | Flash |
| Connectivity | I2C, SPI, UART/USART |
| Peripherals | Brown-out Detect/Reset, POR, PWM, WDT, CIP (CRC/SCAN, HLT, CWG, NCO, DSM) |
| Functional Safety (FuSa) | Supported (documentation package) |
| Low-Power Technology | XLP (eXtreme Low Power) |
| RoHS Status | Compliant |
| Lead-Free | Yes |
PIC16F18875-E/P Pin Configuration
| Pin 1 | MCLR β Master Clear (active-low reset) - requires external pull-up |
| Pin 2 | RA0 β Port A bit 0 / analog input |
| Pin 3 | RA1 β Port A bit 1 / analog input |
| Pin 4 | RA2 β Port A bit 2 / analog input |
| Pin 5 | RA3 β Port A bit 3 / analog input |
| Pin 6 | RA4 β Port A bit 4 / analog input |
| Pin 7 | RA5 β Port A bit 5 / analog input |
| Pin 8 | RA6 β Port A bit 6 / oscillator |
| Pin 9 | RA7 β Port A bit 7 / oscillator |
| Pin 10 | RE0 β Port E bit 0 |
| Pin 11 | VDD β Positive supply voltage (2.3V to 5.5V) |
| Pin 12 | VSS β Ground reference |
| Pin 13 | OSC1 β Oscillator input / external clock |
| Pin 14 | OSC2 β Oscillator output |
| Pin 15 | RC0 β Port C bit 0 |
| Pin 16 | RC1 β Port C bit 1 |
| Pin 17 | RC2 β Port C bit 2 |
| Pin 18 | RC3 β Port C bit 3 / SCL |
| Pin 19 | RC4 β Port C bit 4 / SDA |
| Pin 20 | RC5 β Port C bit 5 |
| Pin 21 | RC6 β Port C bit 6 / TX |
| Pin 22 | RC7 β Port C bit 7 / RX |
| Pin 23 | RD0 β Port D bit 0 |
| Pin 24 | RD1 β Port D bit 1 |
| Pin 25 | RD2 β Port D bit 2 |
| Pin 26 | RD3 β Port D bit 3 |
| Pin 27 | RD4 β Port D bit 4 |
| Pin 28 | RD5 β Port D bit 5 |
| Pin 29 | RD6 β Port D bit 6 |
| Pin 30 | RD7 β Port D bit 7 |
| Pin 31 | VSS β Ground reference |
| Pin 32 | VDD β Positive supply voltage (2.3V to 5.5V) |
| Pin 33 | RB0 β Port B bit 0 / interrupt-on-change |
| Pin 34 | RB1 β Port B bit 1 / interrupt-on-change |
| Pin 35 | RB2 β Port B bit 2 / interrupt-on-change |
| Pin 36 | RB3 β Port B bit 3 / interrupt-on-change |
| Pin 37 | RB4 β Port B bit 4 / interrupt-on-change |
| Pin 38 | RB5 β Port B bit 5 / interrupt-on-change |
| Pin 39 | RB6 β Port B bit 6 / ICSCLK |
| Pin 40 | RB7 β Port B bit 7 / ICSDAT |
Typical Applications
PIC16F18875-E/P is suitable for 6 applications: Low-Power IoT Sensor Node, Industrial Control Module, LED Lighting Controller, Consumer Appliance Interface, Educational & Hobbyist Prototyping, Automotive Body Electronics.
Low-Power IoT Sensor Node
The PIC16F18875-E/P is ideal for battery-powered IoT sensor nodes thanks to its eXtreme Low Power (XLP) technology with sub-Β΅A sleep current and 14 KB Flash for application code. With 32 MHz CPU speed and integrated 10-bit ADC with computation (ADC2), it can directly interface analog sensors such as temperature, humidity, and gas detectors. The on-chip CIP peripherals (CRC/SCAN, HLT) enable autonomous threshold detection and event-driven wake-up without CPU intervention, dramatically extending battery life on a single coin cell to years.
Recommended
Industrial Control Module
For industrial control modules, the PIC16F18875-E/P provides 36 GPIO pins, multiple communication interfaces (UART, SPI, I2C), and Functional Safety (FuSa) documentation supporting IEC 61508 SIL 2 designs. The 40-pin PDIP package simplifies field serviceability and replacement. With 2.3V-5.5V operation and -40C to +125C temperature range, the device handles factory-floor environments and 24V industrial bus systems when paired with appropriate isolation. The CRC/SCAN peripheral ensures memory integrity for safety-critical firmware.
Recommended
LED Lighting Controller
The PIC16F18875-E/P excels in LED lighting controllers thanks to its on-chip Complementary Waveform Generator (CWG), Numerically Controlled Oscillator (NCO), and DSM peripherals that enable high-resolution PWM dimming without CPU overhead. The 14-bit PWM resolution and 32 MHz clock deliver smooth dimming curves down to 0.01% intensity, suitable for architectural and horticultural lighting. With XLP technology, battery-powered portable LED fixtures achieve weeks of runtime per charge cycle.
Recommended
Consumer Appliance Interface
For consumer appliance interfaces (washing machines, microwaves, coffee makers), the PIC16F18875-E/P offers the right balance of compute performance, I/O count, and low cost. Its 36 GPIO pins directly drive 7-segment displays, keypads, and relays without external expanders. The on-chip EUSART supports LIN bus for appliance networking, while XLP modes reduce standby power below 0.1 W to meet energy efficiency regulations. EEPROM emulation supports user setting retention without external memory.
Recommended
Educational & Hobbyist Prototyping
The PIC16F18875-E/P in 40-pin PDIP is purpose-built for educational and hobbyist prototyping on breadboards and through-hole PCBs. Its wide 2.3V-5.5V range tolerates imperfect lab power supplies, while the 14 KB Flash holds complete projects including bootloader and application. Microchip's MPLAB X IDE with XC8 compiler provides a free development environment, and the PICkit 4 programmer supports in-circuit debugging for student projects. The DIP-40 package is forgiving of wiring errors and easy to socket.
Recommended
Automotive Body Electronics
In automotive body electronics such as lighting modules, seat controllers, and climate panels, the PIC16F18875-E/P offers FuSa documentation and an extended temperature range up to +125C. The PWM, CWG, and NCO peripherals enable motor control and LED dimming, while EUSART and SPI connect to body-domain networks. For full AEC-Q100 compliance in under-hood applications, Microchip offers the PIC16F18875T-I/PT automotive-qualified variant in TQFP-44 packaging with the same peripheral set.
Recommended
Recommended Products Summary
Engineering reference data for PIC16F18875-E/P β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16F18875-I/P | PIC16F18855-E/P | PIC16F18876-E/P | PIC16F18877-E/P | PIC16LF18875-I/P |
|---|---|---|---|---|---|---|
| Package | PDIP-40 | PDIP-40 - same | PDIP-40 - same | PDIP-40 - same | PDIP-40 - same | PDIP-40 - same |
| Brand | Microchip Technology | Microchip Technology - same | Microchip Technology - same | Microchip Technology - same | Microchip Technology - same | Microchip Technology - same |
| Flash Memory | 14 KB | 14 KB | 14 KB | 28 KB | 56 KB | 14 KB |
| RAM | 1 KB | 1 KB | 1 KB | 2 KB | 4 KB | 1 KB |
| CPU Speed | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz |
| Operating Voltage | 2.3V to 5.5V | 2.3V to 5.5V | 2.3V to 5.5V | 2.3V to 5.5V | 2.3V to 5.5V | 1.8V to 3.6V |
| Temperature Grade | -40C to +125C (E) | -40C to +85C (I) | -40C to +125C (E) | -40C to +125C (E) | -40C to +125C (E) | -40C to +85C (I) |
| Number of I/O Pins | 36 | 36 | 36 | 36 | 36 | 36 |
| Unit Price (1pc) | $2.65 | $2.50 | $2.40 | $2.85 | $3.10 | $2.55 |
Key Differentiators
- Highest Flash density in PDIP-40 family at lowest price (vs PIC16F18855-E/P)
- Optimal balance of cost and memory (vs PIC16F18877-E/P)
- Standard voltage range vs LF variant (vs PIC16LF18875-I/P)
Design Notes
Place a 100 nF decoupling capacitor as close as possible to each VDD pin (11 and 32) and a 10 Β΅F bulk capacitor at the MCU power entry point. For battery applications, add a 10 Β΅F reservoir capacitor at VBAT if used. The PIC16F18875-E/P draws under 1 Β΅A in XLP sleep mode with RTCC running, but peak current during 32 MHz operation can reach 8 mA, so the decoupling network must supply instantaneous current without VDD droop.
The 40-pin PDIP package has 0.600 inch (15.24 mm) row spacing for through-hole mounting. Ensure adequate clearance around the MCU for ICSP programming header (pin 1 MCLR, pin 39 ICSCLK, pin 40 ICSDAT, VDD, VSS). Route analog signals (RAx, RE0) away from digital switching traces, and place the AVDD/VSS analog supply pins with their own ferrite-bead-isolated supply if precision ADC readings are required.
Do not leave the MCLR pin floating - it requires an external 10 kΞ© pull-up to VDD, otherwise spurious resets may occur. Configure unused I/O pins as outputs low to minimize current leakage. When migrating from PIC16F877A to PIC16F18875-E/P, note that the peripheral register map differs significantly; use MCC (MPLAB Code Configurator) to regenerate initialization code rather than copying legacy configuration bits.
When using the EUSART at 115200 baud or higher, route the TX/RX traces as short as possible with ground reference on adjacent layers. For SPI communication above 4 MHz, add 22-33 Ξ© series resistors near the source to dampen reflections. The I2C bus requires pull-up resistors (typically 4.7 kΞ© at 100 kHz, 2.2 kΞ© at 400 kHz) on SCL/SDA, calculated based on total bus capacitance.
Compliance Information
RoHS and lead-free compliance per Microchip product page. AEC-Q100 not qualified for this industrial-grade variant; Microchip offers PIC16F18875T-I/PT (AEC-Q100) for automotive applications. Halogen-free status not explicitly stated in the verified web data.
