PIC18F452-E/PT - 8-Bit 40MHz Flash MCU | Microchip
MPN: PIC18F452-E/PT ✓ פעילPIC18F452-E/PT סקירה
A PIC microcontroller is a programmable integrated circuit that combines a CPU core, nonvolatile program memory, data memory, and peripherals on one semiconductor device. PIC18F452 belongs to the PIC18 high-performance, enhanced-Flash family and combines a RISC-like instruction set with integrated timers, serial interfaces, interrupt handling, and analog conversion. This MCU can also execute its own Flash program memory, allowing supported in-circuit programming and bootloader-style operations.
The device provides 10 MIPS instruction throughput, with a 100 ns instruction-cycle figure cited for the PIC18FXX2 family. Its instruction set contains 77 single-word instructions, reducing program-memory consumption for common control tasks. The integrated peripherals include eight 10-bit analog-to-digital converter channels, two capture/compare/PWM functions, and a synchronous serial port configurable for either three-wire SPI or two-wire I2C communication. A 256-byte EEPROM provides nonvolatile parameter storage separate from the main Flash program area.
PIC18F452-E/PT operates from a 4.2 V to 5.5 V supply and is designed for embedded control systems that combine event timing, serial communications, and modest analog measurement. Its 34 I/O pins allow digital interfaces to coexist with analog channels in industrial equipment, instrumentation, communications modules, and educational control platforms. The 10-bit ADC supports sensor conditioning and process monitoring, while the timer and PWM resources suit motor, lighting, and repetitive actuator control.
The 44-pin TQFP package is suitable for automated surface-mount assembly and provides a practical pin density for laboratory boards, embedded controllers, and production control products. When designing the PCB, route decoupling capacitors close to the supply pins, keep analog inputs away from high-current switching traces, and use the manufacturer pin-description table to assign every signal. The MCU has no dedicated USB or Ethernet interface, so network-connected designs require suitable external communication hardware.
Programming normally uses the PIC18 instruction set through a compatible compiler, assembler, programmer, and debug interface. Verify the exact configuration words, oscillator settings, peripheral pin assignments, and programming requirements against the manufacturer datasheet before releasing firmware. The self-programming capability can support applications that update their own code, but production firmware should include rollback and power-failure safeguards.
This product page consolidates the verified PIC18F452-E/PT specifications, package details, source links, drop-in comparison options, and practical design guidance. The comparison is intentionally limited to same-footprint candidates because package and pin compatibility are prerequisites for a true drop-in replacement.
חלופות תחליף ישיר עבור PIC18F452-E/PT — אותו מארז, תואם פין-לפין. חלקים במארז שונה הדורשים עיבוד מחדש של ה-PCB אינם נכללים.
וריאנטים בסדרה זו
דגמים מאותה סדרה התואמים Drop-in עם PIC18F452-E/PT (אותו גורם צורה וטביעת רגל) — שונים ב Package, Serial Interfaces, I/O Pins, Program Memory (Flash), Timers.
PIC18F452-I/PT
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←PIC18F452T-I/PT
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←PIC18F452-E/PT דירוגים מרביים ומאפיינים חשמליים
| Architecture | 8-bit PIC18 enhanced-Flash microcontroller |
| תדר שעון מקסימלי | 40 MHz |
| Instruction Throughput | 10 MIPS |
| Instruction Cycle Time | 100 ns |
| Program Memory | 32 KB Flash |
| Program Memory Organization | 16K x 16 words |
| Data RAM | 1536 bytes |
| Data EEPROM | 256 bytes |
| I/O Pins | 34 |
| ADC Resolution | 10 bits |
| ADC Channels | 8 |
| Capture/Compare/PWM Functions | 2 |
| מתח אספקה פעיל | 4.2 V to 5.5 V |
| Serial Interface | SPI or I2C |
| Self-Programming | Supported |
| מארז | 44-pin TQFP, 10 x 10 mm |
| סוג הרכבה | Surface Mount |
| Temperature Grade | Extended temperature |
| Instruction Set Size | 77 single-word instructions |
מדריך תצורת פינים של PIC18F452-E/PT 44-pin tqfp, 10 x 10 mm
תצורת פינים עבור PIC18F452-E/PT (מארזת 44-pin tqfp, 10 x 10 mm). מעגל משולב דיגיטלי זה כולל GPIO, ממשקי תקשורת (UART, SPI, I2C) ופיני מתח. יש לעיין בגיליון הנתונים של היצרן לפונקציות פינים חלופיות ולאפשרויות תצורה. חיוני לתכנון מערכות משובצות ולפריסת PCB.
אין נתוני פריסת פינים מפורטים עבור PIC18F452-E/PT.
עיינו ב- גיליון נתונים עבור תצורת פינים מלאה.
יישומים טיפוסיים
PIC18F452-E/PT מתאים עבור 6 יישוםs: Industrial Sensor and Control Module, Data Acquisition Front End, Motor and PWM Controller, Serial Gateway and Protocol Bridge, Instrumentation Control Panel, Educational Robotics Controller.
Industrial Sensor and Control Module
PIC18F452-E/PT fits compact industrial sensing modules because it combines 34 I/O pins with eight 10-bit ADC channels in a surface-mount 44-pin TQFP. The microcontroller can sample analog sensor inputs, operate digital interlocks, and manage actuator signals while running from a 4.2 V to 5.5 V supply. Its 32 KB Flash provides room for a bootloader or application firmware, while 1,536 bytes of RAM and 256 bytes of EEPROM support working variables and persistent calibration data. Use the industrial PIC18F452-I/PT ordering option only when its temperature rating satisfies the enclosure environment.
מומלץ
Data Acquisition Front End
PIC18F452-E/PT can serve as the control and communications hub of a low-cost data-acquisition front end. Its eight integrated 10-bit ADC channels are suitable for basic voltage, divider, and status measurements, while the 256-byte EEPROM can retain calibration constants and configuration records. SPI or I2C connectivity allows the MCU to transfer samples to an external converter, display, or host processor. The 10 MIPS execution capability supports sampling sequencing and protocol handling without requiring a higher-performance processor. Keep analog traces short, use a separate analog ground strategy where appropriate, and calibrate the ADC against the actual signal bandwidth.
מומלץ
Motor and PWM Controller
PIC18F452-E/PT is suitable for small motor-control and actuator boards because it includes two capture/compare/PWM functions alongside 34 digital I/O pins. PWM outputs can command motor drivers, solenoid drivers, valves, or lamps, while input capture can measure feedback or timing events. The 32 KB Flash memory supports structured state-machine firmware, and the 40 MHz clock provides headroom for closed-loop control calculations. Use suitable driver transistors, flyback protection, and current sensing rather than driving inductive loads directly from the microcontroller. The -E temperature option should be checked against the motor enclosure’s worst-case ambient temperature.
מומלץ
Serial Gateway and Protocol Bridge
PIC18F452-E/PT can implement a compact serial gateway between local sensors, actuators, and an upstream controller. The synchronous serial port can be configured as three-wire SPI or two-wire I2C, while the available digital I/O can handle discrete status signals. Its 1,536 bytes of RAM are adequate for packet buffering and protocol state, and 256 bytes of EEPROM can preserve addressing or configuration values. For applications requiring a higher baud rate or greater message throughput, test the chosen oscillator and peripheral configuration carefully. The same 44-pin TQFP footprint simplifies maintenance across PIC18F452 temperature variants.
מומלץ
Instrumentation Control Panel
PIC18F452-E/PT suits laboratory and process-instrument control panels that combine local buttons, indicators, analog inputs, and a serial host connection. The MCU can scan digital controls, operate the eight 10-bit ADC channels, generate timing or PWM outputs, and report status through SPI, I2C, or an external RS-232 transceiver. Its self-programming support can assist controlled firmware maintenance when paired with a robust bootloader. Separate noisy motor or relay wiring from sensitive measurement paths, provide local decoupling, and use the PIC18F452-E/PT temperature option when the panel operates beyond the industrial range.
מומלץ
Educational Robotics Controller
PIC18F452-E/PT is well suited to educational robotics because one MCU provides timing, PWM, serial communications, analog sensing, and a large set of general-purpose I/O pins. Students can implement motor routines, line sensors, encoders, communications, and finite-state logic while learning the PIC18 architecture and 10-bit ADC. The 44-pin TQFP package is appropriate for compact robot controller boards, although a development platform may be easier for first-time users. Include current limiting on motor outputs, protect analog inputs from motor transients, and avoid using self-programming in educational designs unless the update process is intentionally engineered.
מומלץ
סיכום מוצרים מומלצים
נתוני עזר הנדסיים עבור PIC18F452-E/PT — השוואה, הנחיות תכנון ומידע על תאימות.
מדריך בחירה
השוואה עם חלופות
| פרמטר | מוצר זה | PIC18F452-I/PT | PIC18F452T-I/PT |
|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 44-TQFP (10x10) | 44-TQFP (10x10) - same | 44-TQFP (10x10) - same |
| Temperature Designation | Extended temperature | Industrial temperature | Industrial temperature |
מבדילים עיקריים
- Extended-temperature ordering option in the same TQFP family (לעומתPIC18F452-I/PT)
- Verified 44-pin package and core memory configuration (לעומתPIC18F452T-I/PT)
- Integrated mixed-signal and communications resources (לעומתPIC18F452-I/PT)
הערות תכנון
Assign all 44 TQFP connections from the manufacturer pin-description table and preserve the exposed programming, reset, clock, and supply functions. Place the required supply bypass capacitors immediately adjacent to the corresponding power and ground pins, with short ground returns. Confirm the footprint dimensions, pin-one orientation, and solder-mask clearance against the 10 x 10 mm package drawing before releasing artwork.
Keep the eight ADC inputs and their reference circuitry away from relay-coil, motor-drive, and high-current switching paths. Route analog inputs as short traces over a continuous ground plane, use a quiet analog reference arrangement, and place input filtering close to the source when transient protection is needed. Differential or low-level measurements are particularly sensitive to shared supply impedance and digital switching return currents.
Design the 4.2 V to 5.5 V supply with enough decoupling and routing margin for the PIC18F452-E/PT, external communications hardware, and any attached loads. Use separate, appropriately rated paths for motors, relays, or LED drivers so their switching transients do not distort the microcontroller supply. Verify brownout behavior and power-loss conditions before enabling self-programming in deployed equipment.
Do not substitute PLCC, DIP, or another package option solely because the base PIC18F452 name matches. The -E and PT suffixes identify temperature and package choices, while the I/O count and pin names must also match the PCB. Likewise, the -E and -I variants are not automatically equivalent for every enclosure; check the ambient-temperature limits before substitution.
מידע על תאימות
The manufacturer product page and PIC18FXX2 datasheet were identified, but explicit compliance declarations were not stated for this ordering code.