PIC18F252-E/SO - 8-Bit 40MHz 32KB Flash MCU 28-SOIC | Microchip
MPN: PIC18F252-E/SO ✓ فعالPIC18F252-E/SO جائزہ
An 8-bit microcontroller (MCU) is a single-chip computer built around an 8-bit data-path CPU with on-chip program memory, data memory and peripheral interfaces. Within the broader taxonomy, the PIC18F252 sits in the PIC18 family of high-performance 8-bit MCUs, which itself belongs to Microchip's PIC microcontroller line, the embedded microcontroller category, and finally the semiconductor integrated-circuit hierarchy. The PIC18 family's enhanced instruction set, hardware multiplier and 16-bit-wide instruction word place it above legacy PIC16C5X/PIC16CXX architectures while remaining source-compatible with them.
Key features of the PIC18F252-E/SO include an extended (-40C to +125C) operating temperature range, a wide 2.0 V to 5.5 V supply range, self-programmability for in-field firmware updates, an ICD (In-Circuit Debugger) interface, and nanoWatt power-management technology. Five channels of 10-bit ADC, a USART with addressable addressing, and the Master Synchronous Serial Port (MSSP) deliver rich analog and digital connectivity for cost-sensitive designs.
The device uses a 16-bit Harvard architecture with separate program and data buses, enabling single-cycle instruction fetch plus single-cycle ALU operations. The CMOS FLASH process grants low active and sleep currents while retaining in-application re-programmability. Hardware multiplication (8x8 in one cycle) accelerates arithmetic in motor and signal-processing code paths.
Typical applications include consumer appliances, low-end motor control (small DC and stepper drivers), sensor-conditioning nodes, industrial control panels, and any 5V-tolerant embedded product that needs 32 KB of code space and a stable 8-bit platform. Pair the MCU with a bootloader over M-USB or RS-232 and you have a complete low-density control solution.
When designing with the PIC18F252-E/SO, observe the supply-voltage window of 2.0-5.5 V (4.2-5.5 V is typical for -E parts in industrial applications). Place a 0.1 uF decoupling capacitor close to each VDD pin and a bulk capacitor near the IC. Reserve the MCLR pin for a proper reset circuit (typically 10 kohm pull-up to VDD plus a diode to VDD) to ensure clean in-circuit debugging.
This page synthesizes distributor pricing, drop-in alternatives and practical design notes not found in the manufacturer datasheet alone, and is structured for AI search engines (AEO/GEO) so engineers can find answers in the FAQ and application sections without scrolling through full documents.
کے لیے ڈراپ اِن متبادل PIC18F252-E/SO — یکساں پیکیج، پن سے پن مطابقت پذیر۔ مختلف پیکیج والے پرزے جن کے لیے PCB دوبارہ کام درکار ہو، شامل نہیں ہیں۔
اس سیریز میں مختلف ورژن
اسی سیریز کے ماڈلز جو ڈراپ اِن مطابقت رکھتے ہیں PIC18F252-E/SO (یکساں فارم فیکٹر اور فٹ پرنٹ) — میں مختلف Package, ADC, Timers, Operating Temperature, Core Architecture.
PIC18F252-I/SO
✅ ڈراپ-اِنقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →PIC18F2420-E/SO
✅ ڈراپ-اِنقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →PIC18F2520-E/SO
✅ ڈراپ-اِنقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →PIC18F2423-E/SO
✅ ڈراپ-اِنقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →PIC18F2480-E/SO
✅ ڈراپ-اِنقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →PIC18F24K20-E/SO
✅ ڈراپ-اِنقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →PIC18F252-E/SO زیادہ سے زیادہ ریٹنگز اور برقی خصوصیات
| Core | PIC18 (8-bit) |
| Instruction Set Architecture | RISC, 16-bit instructions |
| Maximum CPU Frequency | 40 MHz (10 MIPS) |
| Program Memory (Flash) | 32 KB (16K x 16) |
| Data RAM | 1.5 KB (1536 bytes) |
| EEPROM | 256 bytes |
| I/O Pins | 23 |
| Timers | 4 |
| CCP/PWM Channels | 2 |
| ADC | 10-bit, 5 channels |
| Serial Interfaces | SPI, I2C (MSSP), USART |
| سپلائی وولٹیج | 2.0 V to 5.5 V (4.2 V to 5.5 V typical for -E) |
| آپریٹنگ درجہ حرارت | -40C to +125C (Extended, -E suffix) |
| پیکیج | 28-pin SOIC (0.295 inch / 7.50 mm width) |
| Self-Programming | Yes (Flash) |
| In-Circuit Debug | Yes (ICD) |
| Hardware Multiplier | 8x8 single-cycle |
| RoHS اسٹیٹس | Compliant |
PIC18F252-E/SO پن کنفیگریشن
| پن 1 | MCLR — Master Clear (Reset) input, active low |
| پن 2 | RA0/AN0 — Digital I/O / Analog input channel 0 |
| پن 3 | RA1/AN1 — Digital I/O / Analog input channel 1 |
| پن 4 | RA2/AN2/VREF- — Digital I/O / Analog input 2 / ADC VREF- |
| پن 5 | RA3/AN3/VREF+ — Digital I/O / Analog input 3 / ADC VREF+ |
| پن 6 | RA4/T0CKI — Digital I/O / Timer0 clock input |
| پن 7 | RA5/AN4/SS — Digital I/O / Analog input 4 / SPI Slave Select |
| پن 8 | VSS — Ground reference |
| پن 9 | OSC1/CLKI — Oscillator crystal input / external clock |
| پن 10 | OSC2/CLKO — Oscillator crystal output / clock out |
| پن 11 | RC0/T1OSO/T1CKI — Digital I/O / Timer1 oscillator output / clock input |
| پن 12 | RC1/T1OSI/CCP2 — Digital I/O / Timer1 oscillator input / CCP2 |
| پن 13 | RC2/CCP1 — Digital I/O / CCP1 (PWM output) |
| پن 14 | RC3/SCK/SCL — Digital I/O / SPI clock / I2C clock |
| پن 15 | RC4/SDI/SDA — Digital I/O / SPI data in / I2C data |
| پن 16 | RC5/SDO — Digital I/O / SPI data out |
| پن 17 | RC6/TX/CK — Digital I/O / USART TX / clock |
| پن 18 | RC7/RX/DT — Digital I/O / USART RX / data |
| پن 19 | VSS — Ground reference |
| پن 20 | VDD — Positive supply voltage |
| پن 21 | RB0/INT0 — Digital I/O / External interrupt 0 |
| پن 22 | RB1/INT1 — Digital I/O / External interrupt 1 |
| پن 23 | RB2/INT2 — Digital I/O / External interrupt 2 |
| پن 24 | RB3/CCP2 — Digital I/O / CCP2 alternate pin |
| پن 25 | RB4 — Digital I/O / interrupt-on-change |
| پن 26 | RB5/PGM — Digital I/O / LVP programming |
| پن 27 | RB6/PGC — Digital I/O / ICD clock |
| پن 28 | RB7/PGD — Digital I/O / ICD data |
عام استعمالات
PIC18F252-E/SO کے لیے موزوں ہے 6 ایپلیکیشنs: Industrial Control Panels, Small Motor and Stepper Control, Sensor Conditioning and Data Logging, Consumer Appliance Control, Automotive Aftermarket Accessories, Hobby and Educational Development.
Industrial Control Panels
The PIC18F252-E/SO is well-suited for industrial control panels thanks to its Extended -40C to +125C temperature grade and 23 programmable I/O lines. Its 32 KB Flash accommodates HMI state machines and Modbus ASCII/RTU stacks, while four timers and two CCP/PWM channels handle timing and triac/SSR drive signals. Place the MCU between the 5 V logic rail and the front-panel keypad/LED matrix; the MSSP and USART interfaces connect directly to RS-485 transceivers for field-bus communication.
تجویز کردہ
Small Motor and Stepper Control
The PIC18F252-E/SO can drive small DC brushed motors and unipolar stepper motors via its two CCP/PWM modules and four timers. The 40 MHz (10 MIPS) throughput is sufficient for trapezoidal commutation at moderate RPM, and the 5-channel 10-bit ADC samples back-EMF or current-sense signals directly. Drive the gates of an H-bridge such as the L293D from the CCP outputs; the 32 KB Flash holds the acceleration/deceleration profile and fault-handling routines in a single image.
تجویز کردہ
Sensor Conditioning and Data Logging
With five channels of 10-bit ADC, hardware 8x8 multiplier, and 1.5 KB of RAM for circular buffers, the PIC18F252-E/SO is a strong fit for sensor-conditioning and local data-logging nodes. The MSSP port reads digital sensors via SPI or I2C, while the USART streams averaged data upstream at 115200 baud. Place the MCU between the analog front-end (e.g., instrumentation amp) and a serial-to-Ethernet bridge; the 256 bytes of EEPROM store calibration constants that survive power cycles.
تجویز کردہ
Consumer Appliance Control
The PIC18F252-E/SO's Extended temperature rating and self-programming Flash make it an attractive choice for white-goods controllers such as washing-machine front panels, dishwasher timers, and microwave user interfaces. The 32 KB Flash handles user-interface state machines plus safety logic, while four timers drive triac phase-control firmware. Place the MCU near the user keypad and run the triac optocouplers from the CCP/PWM pins; the nanoWatt sleep mode keeps standby power below regulatory thresholds.
تجویز کردہ
Automotive Aftermarket Accessories
Although not -AEC-Q100 qualified, the PIC18F252-E/SO's Extended -40C to +125C temperature range and robust Flash allow it to serve in aftermarket automotive accessories such as gauge controllers, lighting sequencers, and alarm interfaces. The two CCP/PWM channels drive LED current sinks and buzzer tones, while the USART links to OBD-II adapters for telemetry display. Mount the MCU on the accessory PCB with a 5 V regulator; ensure ESD protection on external connectors since the part lacks automotive EMI hardening.
تجویز کردہ
Hobby and Educational Development
The PIC18F252-E/SO is widely adopted in hobbyist and university curricula because its 77-instruction set, in-circuit debugger, and 32 KB Flash let students prototype real embedded systems without a steep learning curve. Combined with a PICkit 3/4 programmer, students can program, debug, and self-reprogram the device directly on the breadboard. Use the 28-SOIC breakout board or DIP-socket adapter and you have a reusable platform for robotics, sensor-fusion demos, and capstone projects.
تجویز کردہ
تجویز کردہ پروڈکٹس کا خلاصہ
کے لیے انجینئرنگ ریفرنس ڈیٹا PIC18F252-E/SO — موازنہ، ڈیزائن رہنمائی، اور تعمیل کی معلومات۔
انتخاب کی گائیڈ
متبادلات کے ساتھ موازنہ
| پیرامیٹر | یہ پروڈکٹ | PIC18F252-I/SO | PIC18F2420-E/SO | PIC18F2520-E/SO | PIC18F2423-E/SO | PIC18F2480-E/SO | PIC18F24K20-E/SO |
|---|---|---|---|---|---|---|---|
| Package | 28-SOIC (0.295 inch) | 28-SOIC (0.295 inch) - same | 28-SOIC (0.295 inch) - same | 28-SOIC (0.295 inch) - same | 28-SOIC (0.295 inch) - same | 28-SOIC (0.295 inch) - same | 28-SOIC (0.295 inch) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash Memory | 32 KB | 32 KB | 16 KB | 16 KB | 16 KB | 16 KB | 16 KB |
| RAM | 1.5 KB | 1.5 KB | 768 B | 768 B | 768 B | 768 B | 768 B |
| Max Clock Frequency | 40 MHz | 40 MHz | 40 MHz | 40 MHz | 40 MHz | 40 MHz | 64 MHz |
| Operating Temperature | -40C to +125C (Extended) | -40C to +85C (Industrial) | -40C to +125C (Extended) | -40C to +125C (Extended) | -40C to +125C (Extended) | -40C to +125C (Extended) | -40C to +125C (Extended) |
| I/O Pins | 23 | 23 | 23 | 23 | 23 | 23 | 23 |
| Special Features | ICD, self-programming Flash | ICD, self-programming Flash | nanoWatt, ICD, self-programming | nanoWatt, ICD, self-programming | nanoWatt, internal 32 kHz OSC | CAN bus, ICD, self-programming | nanoWatt XLP, 64 MHz FOSC |
| Unit Price (qty 1) | $9.76 | approx. $9.00 | approx. $8.20 | approx. $7.60 | approx. $7.90 | approx. $8.80 | approx. $7.20 |
اہم امتیازی خصوصیات
- Extended -40C to +125C temperature grade (بمقابلہPIC18F252-I/SO)
- Larger Flash and RAM than K-series siblings (بمقابلہPIC18F24K20-E/SO)
- CAN-bus-capable drop-in not required for non-CAN designs (بمقابلہPIC18F2480-E/SO)
ڈیزائن نوٹس
Power the PIC18F252-E/SO from a regulated 5.0 V or 3.3 V rail with a 100 nF decoupling capacitor within 5 mm of each VDD/VSS pair, plus a 10 uF bulk capacitor near the IC. According to the PIC18FXX2 datasheet, the part draws approximately 1.8 mA per MHz in active mode and falls to under 1 uA in sleep mode; size the regulator to handle at least 2x the active current to absorb inrush during Flash programming.
Place the 28-SOIC package so that pin 1 (MCLR) is at the top-left when the notch is up. Route the crystal traces (OSC1/OSC2) short and symmetric, with the load capacitors within 4 mm of the pins and a ground pour underneath. Keep the analog AVCC/AVSS traces (where present) short and isolated from digital switching lines, and surround the SOIC with a continuous ground plane for EMI suppression.
Do not leave the MCLR pin floating - a 10 kohm pull-up to VDD plus a diode to VDD is required for reliable reset. When using LVP (low-voltage programming) mode, ensure the PGM/ RB5 pin is not driven low at power-up, or the device will enter programming mode unintentionally. Always verify the configuration bits (oscillator, watchdog, brown-out) match your firmware startup sequence before locking the part.
For SPI buses above 5 MHz, add 33 ohm series resistors close to the SCK/SDO/SDI pins of the PIC18F252-E/SO to dampen ringing on long traces. Keep the SPI bus shorter than 100 mm or use a ground-shielded twisted pair. If the I2C bus exceeds 400 kHz, reduce the pull-up resistor value to 1 kohm and verify the rise time is below the spec to avoid intermittent NACKs.
تعمیل کی معلومات
RoHS and REACH compliant per Microchip product page. Not AEC-Q100 qualified; for AEC-Q100 automotive applications select PIC18F4520-I/PT or PIC18F46K22-I/P from Microchip's automotive line.
