PIC18F45Q10-E/P - 8-Bit 64MHz 32KB FLASH 40-PDIP MCU | Microchip
MPN: PIC18F45Q10-E/P ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $2.65 | $2.65 |
| 10 | $2.39 | $23.90 |
| 100 | $2.12 | $212.00 |
| 500 | $1.89 | $945.00 |
| 1,000 | $1.72 | $1,720.00 |
PIC18F45Q10-E/P Overview
Background: A microcontroller (MCU) is an integrated circuit that combines a CPU core, non-volatile program memory (FLASH/ROM), volatile data memory (RAM), and a rich set of peripheral blocks (timers, ADC, communication interfaces) on a single silicon die. Within the MCU taxonomy, the PIC18F45Q10 belongs to the 8-bit family (PIC18 core) > enhanced mid-range with nanoWatt XLP power management > PIC18-Q10 sub-family > 40-pin variants. The Functional Safety (FuSa) family designation signals that the device includes diagnostics and documentation suitable for IEC 60730 class B safety functions in household appliances.
Key features of the PIC18F45Q10 include a 10-bit ADC with Computation (ADC2) supporting averaging, filtering, and Capacitive Voltage Divider (CVD) for touch sensing, Configurable Logic Cells (CLCs) for hardware-level glue logic, Complementary Waveform Generator (CWG) with auto-shutdown, and multiple Core-Independent Peripherals (CIPs) such as EUSART, MSSP (I2C/SPI), and 16-bit PWM with multiple capture/compare channels. The device operates from 1.8V to 5.5V (F-version, extended) and is offered in the -40C to +125C extended industrial temperature range, denoted by the -E suffix.
The PIC18F45Q10 uses an enhanced Harvard architecture with a 16-bit instruction word and an 8-bit data path, executing most instructions in one instruction cycle (4 clock periods). Internal oscillator flexibility (32kHz-64MHz HFINTOSC), programmable PLL, and nanoWatt XLP sleep modes (< 100 nA typical) make the part attractive for battery- or energy-harvesting sensor nodes where quiescent draw dominates the energy budget.
Typical applications include industrial control sensor nodes, consumer appliances requiring IEC 60730 class B functional safety (white goods, washing machines, dishwashers), touch-sensing human-machine interfaces using the CVD peripheral, low-power IoT end-nodes with sleep duty cycling, and small motor-driver companions with the CWG and PWM peripherals. The 5V I/O is also valued for retrofitting legacy 5V systems.
When designing with this device, allocate decoupling capacitors (100 nF per VDD pin, plus a bulk 10 uF) close to the IC, route MCLR with proper pull-up, and reserve an ICSP header on the PCB for in-circuit programming and debugging. The Q10 family's CIPs can offload tasks traditionally handled in firmware, reducing CPU wake-up frequency.
This page synthesizes distributor pricing, drop-in alternatives, design notes, and AEO-optimized FAQ not found in the manufacturer datasheet alone, providing engineers and procurement teams a single reference for part selection.
Drop-in alternatives for PIC18F45Q10-E/P — 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 PIC18F45Q10-E/P (same form factor and footprint) — differing in Mounting Type, Package, ADC, Program Memory (Flash), Comparators.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC18F45Q10-I/P
✅ Drop-In✓ In Stock
$2.15 / Unit
View Datasheet →PIC18F46Q10-E/P
✅ Drop-In✓ In Stock
$1.99 / Unit
View Datasheet →PIC18F45K42-E/P
✅ Drop-In✓ In Stock
$1.85 / Unit
View Datasheet →PIC18F45K22-E/P
✅ Drop-In✓ In Stock
$2.78 / Unit
View Datasheet →PIC18F45K80-E/PT
✅ Drop-In✓ In Stock
$2.78 / Unit
View Datasheet →PIC18F45Q10-E/P Maximum Ratings & Electrical Characteristics
| Core Architecture | PIC18 8-bit enhanced Harvard |
| CPU Speed (max) | 64 MHz |
| Program Memory (FLASH) | 32 KB (32K x 8) |
| Package | 40-pin PDIP (P) |
| Pin Count | 40 |
| Operating Voltage Range | 1.8 V to 5.5 V |
| ADC | 10-bit with Computation (ADC2), CVD |
| Communication Interfaces | EUSART, MSSP (I2C/SPI) |
| Timers/PWM | 16-bit PWM, multiple capture/compare |
| Core-Independent Peripherals | CLC, CWG, DSM, Configurable Logic |
| Functional Safety | IEC 60730 Class B (FuSa) ready |
| Operating Temperature Range | -40 C to +125 C (E = Extended) |
| Mounting Type | Through-Hole (THT) |
| RoHS Status | Compliant |
| Lead-Free | Yes |
PIC18F45Q10-E/P Pin Configuration
| Pin 1 | MCLR — Master Clear (Reset) input, active low |
| Pin 2 | RA0 — PORTA bit 0 (analog/digital I/O) |
| Pin 3 | RA1 — PORTA bit 1 (analog/digital I/O) |
| Pin 4 | RA2 — PORTA bit 2 (analog/digital I/O) |
| Pin 5 | RA3 — PORTA bit 3 (analog/digital I/O, VREF+) |
| Pin 6 | RA4 — PORTA bit 4 (digital I/O) |
| Pin 7 | RA5 — PORTA bit 5 (analog/digital I/O) |
| Pin 8 | RE0 — PORTE bit 0 (digital I/O) |
| Pin 9 | RE1 — PORTE bit 1 (digital I/O) |
| Pin 10 | RE2 — PORTE bit 2 (digital I/O) |
| Pin 11 | VDD — Positive supply voltage |
| Pin 12 | VSS — Ground reference |
| Pin 13 | RA7 — PORTA bit 7 (digital I/O) |
| Pin 14 | RA6 — PORTA bit 6 (digital I/O) |
| Pin 15 | RC0 — PORTC bit 0 (digital I/O) |
| Pin 16 | RC1 — PORTC bit 1 (digital I/O) |
| Pin 17 | RC2 — PORTC bit 2 (digital I/O) |
| Pin 18 | RC3 — PORTC bit 3 (digital I/O) |
| Pin 19 | RD0 — PORTD bit 0 (digital I/O) |
| Pin 20 | RD1 — PORTD bit 1 (digital I/O) |
| Pin 21 | RD2 — PORTD bit 2 (digital I/O) |
| Pin 22 | RD3 — PORTD bit 3 (digital I/O) |
| Pin 23 | RC4 — PORTC bit 4 (digital I/O) |
| Pin 24 | RC5 — PORTC bit 5 (digital I/O) |
| Pin 25 | RC6 — PORTC bit 6 (digital I/O) |
| Pin 26 | RC7 — PORTC bit 7 (digital I/O) |
| Pin 27 | RD4 — PORTD bit 4 (digital I/O) |
| Pin 28 | RD5 — PORTD bit 5 (digital I/O) |
| Pin 29 | RD6 — PORTD bit 6 (digital I/O) |
| Pin 30 | RD7 — PORTD bit 7 (digital I/O) |
| Pin 31 | VSS — Ground reference |
| Pin 32 | VDD — Positive supply voltage |
| Pin 33 | RB0 — PORTB bit 0 (interrupt-on-change, analog/digital I/O) |
| Pin 34 | RB1 — PORTB bit 1 (analog/digital I/O) |
| Pin 35 | RB2 — PORTB bit 2 (analog/digital I/O) |
| Pin 36 | RB3 — PORTB bit 3 (analog/digital I/O) |
| Pin 37 | RB4 — PORTB bit 4 (interrupt-on-change, digital I/O) |
| Pin 38 | RB5 — PORTB bit 5 (interrupt-on-change, digital I/O) |
| Pin 39 | RB6 — PORTB bit 6 (interrupt-on-change, ICSP programming clock) |
| Pin 40 | RB7 — PORTB bit 7 (interrupt-on-change, ICSP programming data) |
Typical Applications
PIC18F45Q10-E/P is suitable for 6 applications: Functional Safety Appliance Controller, Capacitive Touch Sensing HMI, Industrial Sensor Node, Small Motor / Fan Driver Companion, Low-Power IoT End Node, Consumer White Goods Control Board.
Functional Safety Appliance Controller
The PIC18F45Q10-E/P integrates the Functional Safety (FuSa) documentation library and on-die diagnostics (BOR, windowed watchdog, RAM/FLASH BIST) required for IEC 60730 class B compliance, making it well suited to household appliances such as washing machines, dishwashers, and refrigerators. Its 32KB FLASH accommodates class B self-test routines alongside the application firmware, while 5V-tolerant I/O interfaces directly with line-voltage optocouplers and triac drivers used in motor and heater control. Compared with a generic 8-bit MCU, the Q10 reduces external safety components and shortens class B certification effort.
Recommended
Capacitive Touch Sensing HMI
The PIC18F45Q10-E/P's ADC2 with Capacitive Voltage Divider (CVD) hardware offloads the charge-balancing timing required for robust capacitive touch buttons and sliders, reducing CPU wake events and enabling touch wake-up from nanoWatt XLP sleep. Microchip's mTouch CVD library supports up to 17 sensor channels on the 40-pin variant, sufficient for small appliance front panels and IoT control surfaces. With sub-100 nA sleep current, battery-powered touch remotes and wireless switches become practical using the Q10 as a touch-only front end.
Recommended
Industrial Sensor Node
The PIC18F45Q10-E/P's 5V-tolerant I/O and 1.8V-5.5V supply range suit 24V-bus industrial sensors that step down to a regulated 5V rail, providing higher noise immunity than 3.3V-only MCUs. Its 10-bit ADC2 with averaging and filtering delivers oversampled readings for temperature, pressure, and flow sensors without burdening the CPU, while EUSART and MSSP peripherals link to RS-485 transceivers and I2C sensor front-ends. The extended -40C to +125C temperature grade supports outdoor or under-hood deployments without additional thermal qualification.
Recommended
Small Motor / Fan Driver Companion
The PIC18F45Q10-E/P's Complementary Waveform Generator (CWG), 16-bit PWM with capture/compare, and Configurable Logic Cells (CLC) make it a flexible companion controller for small BLDC, brushed-DC, or stepper motor driver boards. The CWG provides hardware dead-band control and auto-shutdown on fault, reducing firmware latency in safety-critical motion stops, while the CLC can implement encoder quadrature decoding without software overhead. Operating from 1.8V-5.5V, it accepts direct logic-level commands from a higher-level controller or runs standalone with sensor feedback.
Recommended
Low-Power IoT End Node
The PIC18F45Q10-E/P's nanoWatt XLP technology delivers sub-100 nA typical sleep current with RTCC and watchdog active, enabling multi-year battery life in IoT end nodes that wake briefly to take a sensor reading and transmit. The on-chip 64MHz HFINTOSC eliminates an external crystal for cost-sensitive nodes, while the MSSP peripheral drives SPI or I2C radios and sensors directly. Combined with the FuSa library, the Q10 also targets utility metering edge nodes where IEC 60730 class B is increasingly required.
Recommended
Consumer White Goods Control Board
The PIC18F45Q10-E/P is widely deployed in entry-level white-goods control boards (cooktops, microwave ovens, range hoods, small kitchen appliances) because its 5V I/O directly drives triac opto-couplers and seven-segment LED displays without level shifters. The CVD touch peripheral supports sleek glass-front interfaces, while the class B FuSa documentation accelerates safety certification for household appliances sold in regulated markets. With 32KB FLASH and ample CIPs, the Q10 consolidates what previously required a touch IC plus a main MCU plus discrete logic into a single chip.
Recommended
Recommended Products Summary
Engineering reference data for PIC18F45Q10-E/P — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC18F45Q10-I/P | PIC18F46Q10-E/P | PIC18F45K42-E/P | PIC18F45K22-E/P | PIC18F45K80-E/P |
|---|---|---|---|---|---|---|
| Package | 40-PDIP (P) | 40-PDIP (P) | 40-PDIP (P) | 40-PDIP (P) | 40-PDIP (P) | 40-PDIP (P) |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| FLASH Memory | 32 KB | 32 KB | 64 KB | 32 KB | 32 KB | 32 KB |
| Max CPU Clock | 64 MHz | 64 MHz | 64 MHz | 64 MHz | 64 MHz | 64 MHz |
| Operating Voltage | 1.8 V to 5.5 V | 1.8 V to 5.5 V | 1.8 V to 5.5 V | 2.3 V to 5.5 V | 2.3 V to 5.5 V | 2.7 V to 5.5 V |
| Temperature Grade | -40C to +125C (Extended) | -40C to +85C (Industrial) | -40C to +125C (Extended) | -40C to +125C (Extended) | -40C to +125C (Extended) | -40C to +125C (Extended) |
| ADC | 10-bit ADC2 with CVD | 10-bit ADC2 with CVD | 10-bit ADC2 with CVD | 10-bit ADC (no CVD) | 10-bit ADC (legacy) | 12-bit ADC |
| Functional Safety (FuSa) | IEC 60730 Class B | IEC 60730 Class B | IEC 60730 Class B | Not classified as FuSa | Not classified as FuSa | Not classified as FuSa |
| Approx Unit Price (USD, qty 1) | 2.65 | 2.55 | 3.10 | 2.70 | 2.45 | 3.25 |
Key Differentiators
- Functional Safety (FuSa) IEC 60730 Class B documentation (vs PIC18F45K22-E/P)
- ADC with Computation (ADC2) and Capacitive Voltage Divider (CVD) (vs PIC18F45K42-E/P)
- Wide 1.8V-5.5V supply range with 5V-tolerant I/O (vs PIC18F45K80-E/P)
Design Notes
Place a 100 nF ceramic decoupling capacitor as close as possible to every VDD pin (pins 11 and 32 on the 40-PDIP package) and add a single bulk 10 uF tantalum or ceramic capacitor on the main supply rail. For battery-powered designs, route the BOR (brown-out reset) configuration to match the lowest expected battery voltage (typically 1.8V-2.0V) to avoid spurious resets as cells age. nanoWatt XLP sleep modes pull < 100 nA with RTCC active, but check the specific datasheet sleep current table for your chosen configuration before finalizing the power budget.
For through-hole PDIP-40 designs, allocate at least a 0.100 inch (2.54 mm) pitch row of 40 through-hole pads on a 0.600 inch (15.24 mm) wide footprint. Reserve a 5-pin header (VPP/MCLR, PGD, PGC, VSS, VDD) for ICSP programming and in-circuit debugging; the RB6/RB7 pins on the PIC18F45Q10 share with the ICSP clock/data lines, so wire them with a small series resistor if the application also drives them as outputs to avoid contention with the programmer. Keep crystal traces short and surrounded by a ground guard ring if accuracy-sensitive timing is required.
Do not confuse the -E (Extended -40C to +125C) and -I (Industrial -40C to +85C) temperature grades - they are part of the ordering suffix and must be specified correctly for harsh-environment designs. When migrating code from a PIC18F45K22 to a PIC18F45Q10, verify the ADC configuration register names because the Q10 introduces the ADC2 (with Computation) registers that differ from the legacy K22 ADC. Always check the Interrupt-on-Change (IOC) edge configuration for PORTB; the Q10 allows both rising and falling edges independently, but firmware migrating from older PICs may not initialize both edges correctly.
Compliance Information
RoHS and REACH compliance per Microchip product environmental compliance documentation. AEC-Q100 not applicable (general-purpose industrial/consumer MCU). Halogen-free status not enumerated in distributor listings - set to unknown pending manufacturer datasheet review.
