PIC18F4520-E/PT Microchip Integrated Circuit (Quad Flat Packages) In Stock
The PIC18F4520-E/PT is an 8-bit PIC18 microcontroller with 32 KB flash, 1536 bytes RAM, 36 I/O pins, a 10-bit ADC, and a maximum 40 MHz clock in a 44-pin TQFP package. It supports USART, SPI, I2C, and CCP peripherals for embedded control applications. Available from stock with worldwide shipping.
- Manufacturer
- Microchip
- Package
- Quad Flat Packages
- Pin Count
- 44
- Lifecycle
- ACTIVE
- Datasheet
- PIC18F4520-E/PT Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $5.1600(MOQ 1)
- Temp Range
- -40.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 32 KB self-programmable flash with 100,000 erase/write cycle endurance supports field firmware updates via UART bootloader without a separate programming connector in production
- 10-bit ADC with up to 13 channels allows direct connection of multiple analog sensors — temperature, pressure, or current — to a single MCU without external ADC ICs
- PIC18 enhanced instruction set with 8×8 hardware multiplier executes control algorithms up to 40 MHz, delivering 10 MIPS throughput in a compact 44-pin TQFP footprint
Applications
The PIC18F4520-E/PT is widely used in embedded control applications including industrial sensor data loggers, motor speed controllers, and building automation nodes where a capable 8-bit core with on-chip peripherals reduces external component count. Its 36 I/O pins and multi-protocol serial interfaces (USART, SPI, I2C) allow direct connection to LCD modules, EEPROM, wireless transceivers, and RS-485 transceivers within a single-chip solution. The extended temperature range (-40°C to +125°C for the E variant) also makes it suitable for outdoor environmental monitoring, HVAC controllers, and agricultural sensor nodes exposed to wide temperature swings.
Specifications
| Pbfree Code | Yes |
| Manufacturer Package Code | TQFP-44 |
| Factory Lead Time | 6Weeks |
| YTEOL | 9 |
| Has ADC | YES |
| Bit Size | 8 |
| Boundary Scan | NO |
| CPU Family | PIC18 |
| Clock Frequency-Max | 40MHz |
| DAC Channels | NO |
| DMA Channels | NO |
| Format | FIXED POINT |
| Integrated Cache | NO |
| JESD-30 Code | S-PQFP-G44 |
| JESD-609 Code | e3 |
| Low Power Mode | YES |
| Number of External Interrupts | 3 |
| Number of I/O Lines | 36 |
| Number of Serial I/Os | 1 |
| Number of Timers | 4 |
| On Chip Data RAM Width | 8 |
| On Chip Program ROM Width | 8 |
| PWM Channels | YES |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | TQFP44,.39SQ,31 |
| Package Shape | SQUARE |
| Package Style | FLATPACK, THIN PROFILE |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| RAM (bytes) | 1536 |
| ROM (words) | 32768 |
| ROM Programmability | FLASH |
| Speed | 40MHz |
| Supply Current-Max | 3.5mA |
| Supply Voltage-Max | 5.5V |
| Supply Voltage-Min | 4.2V |
| Supply Voltage-Nom | 5V |
| Surface Mount | YES |
| Technology | CMOS |
| Temperature Grade | AUTOMOTIVE |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.8mm |
| Terminal Position | QUAD |
| Time@Peak Reflow Temperature-Max (s) | 40 |
| uPs/uCs/Peripheral ICs Type | MICROCONTROLLER, RISC |
| ## PIC18F4520-E/PT Alternates Showing results | Image |
| Package | Quad Flat Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 3 |
| ECCN | 3A991.A.2 |
| HTS Code | 8542.31.00.01 |
| Country of Origin | Philippines, Thailand |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for PIC18F4520-E/PT:
suggested
suggested
suggested
suggested
RISC Microcontroller, 8-Bit, FLASH, PIC18 CPU, 40MHz, CMOS, PQFP44
RISC Microcontroller, 8-Bit, FLASH, PIC18 CPU, 40MHz, CMOS, PQFP44
RISC Microcontroller, 8-Bit, FLASH, PIC18 CPU, 40MHz, CMOS, PQFP44
RISC Microcontroller, 8-Bit, FLASH, PIC18 CPU, 40MHz, CMOS, PQFP44
RISC Microcontroller, 8-Bit, FLASH, PIC18 CPU, 40MHz, CMOS, PQFP44
Frequently Asked Questions
How many analog input channels does the PIC18F4520-E/PT ADC support, and what resolution does it offer?
The PIC18F4520-E/PT integrates a 10-bit successive-approximation ADC with up to 13 multiplexed analog input channels, delivering a resolution of 1 part in 1024 (approximately 4.88 mV per LSB at 5 V reference). This is sufficient for measuring temperature sensors (LM35 output of 10 mV/°C), potentiometer positions, and resistive bridge outputs without an external ADC chip, keeping the BOM to the MCU and passive components only.
What is the maximum clock speed of the PIC18F4520-E/PT, and how many instructions per second does that deliver?
The PIC18F4520-E/PT operates up to 40 MHz with an external crystal or resonator. The PIC18 core executes most instructions in a single 4-clock cycle (one instruction cycle), yielding a throughput of 10 MIPS at 40 MHz. For time-critical control loops such as a 10 kHz PID motor controller requiring 1000 instruction cycles per loop iteration, this leaves 90% of the CPU bandwidth available for communication, display update, and sensor sampling tasks.
For a battery-powered data logger requiring long field deployment, which PIC18F4520-E/PT sleep mode reduces current consumption most effectively?
In Sleep mode with the primary oscillator stopped, the PIC18F4520-E/PT typically consumes less than 100 nA to 1 µA at 2 V supply (from the internal low-power RC oscillator off). Waking on a Timer1 interrupt from a 32.768 kHz watch crystal every 30 seconds, the MCU can sample sensors, write to EEPROM, and return to sleep in under 5 ms per cycle. At a 3 V lithium coin cell with 225 mAh capacity, this duty cycle extends battery life to several years in a low-traffic environmental sensor application.
How does the PIC18F4520-E/PT -E variant temperature rating affect suitability for outdoor industrial installations?
The -E suffix indicates an extended industrial temperature grade with guaranteed operation from -40°C to +125°C junction temperature, compared to the commercial grade that covers only 0°C to +70°C. For outdoor weather stations, pipeline monitoring RTUs, or agricultural control nodes that may experience -30°C winter nights and +85°C enclosure temperatures in summer sun, the -E variant provides the necessary specification margin. Using the standard commercial grade in these environments risks out-of-specification ADC accuracy, oscillator frequency drift, and potential latch-up or logic errors, making the -E variant the correct selection despite its slightly higher unit cost.
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