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PIC16F628A-I/P

8-bit PIC MCU, 1.75KB Flash, 16 I/O, DIP-18

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جزء الشركة المصنعة ： جزء الشركة المصنعة

PIC16F628A-I/P

الحزمة ： الحزمة

PDIP-18 (23.5 x 6.35 x 5.0 mm, 300 mil)

الوصف

نظرة عامة على المنتج

The PIC16F628A-I/P from Microchip Technology is an 8-bit PIC microcontroller with 1.75KB Flash, 224B RAM, 16 I/O, dual comparator, and DIP-18 package.

المواصفات الرئيسية

النوع	8-bit PIC Microcontroller
Max Frequency	20 MHz
فلاش	1.75 KB (2048 words x 14 bits)
SRAM	224 bytes
EEPROM	128 bytes
I/O Pins	16
المؤقتات	3 (Timer0, Timer1, Timer2)
Comparators	2
التواصل	1x EUSART
Capture/Compare/PWM	1 (CCP module)
جهد الإمداد	3.0V to 5.5V
الحزمة	DIP-18 (300 mil)
درجة حرارة التشغيل	-40C to +85C (I grade)

الميزات

1.75KB Flash with 100,000 erase/write cycles
128 bytes EEPROM data memory
Internal 4 MHz oscillator (no external crystal needed)
Dual comparator with internal voltage reference
DIP-18 package for prototyping and education
Low-cost entry point for PIC development

التطبيقات

Educational and hobby projects
Simple control applications
Replacement for 555 timer circuits
Serial communication bridge

مقدمة المنتج:PIC16F628A-I/P مقدمة المنتج

The PIC16F628A-I/P from Microchip Technology is a classic 8-bit PIC microcontroller in a through-hole DIP-18 package, widely used in education, hobby electronics, and simple control applications. The 1.75KB Flash and 224 bytes SRAM provide adequate resources for small firmware projects. The 128-byte EEPROM enables non-volatile data storage. The internal 4 MHz oscillator eliminates the need for an external crystal for basic operation, while external clock options up to 20 MHz are supported. The dual comparator with an internal voltage reference enables analog monitoring without external components. The EUSART supports serial communication for debugging and data transfer. The CCP module provides capture, compare, and PWM functions for timing and motor control. The DIP-18 package makes this device ideal for breadboard prototyping, educational labs, and legacy through-hole designs.

مبدأ العمل:PIC16F628A-I/P مبدأ العمل

The PIC16F628A uses Microchip’s baseline 14-bit instruction word PIC core with an 8-level hardware stack. Most instructions execute in a single cycle at the clock rate (200 ns at 20 MHz). The 1.75KB Flash stores up to 2048 14-bit instructions. The 224 bytes of SRAM includes the special function registers (SFRs) and general-purpose registers. The internal oscillator runs at 4 MHz by default, configurable via the configuration register. The dual comparator module can compare external pin voltages against each other or against an internal 16-tap voltage reference. The CCP module can capture timer values on external events (capture mode), generate timed outputs (compare mode), or produce PWM waveforms (PWM mode). The EUSART implements asynchronous serial communication with configurable baud rate derived from the timer or oscillator. The 128-byte EEPROM uses a separate address space and requires special read/write sequences with a write completion flag.

وصف الدبوس:PIC16F628A-I/P تعريف الدبوس ووظائفه

دبوس	الاسم	النوع	الوظيفة
1	RA2/AN2/VREF	الإدخال/الإخراج	Port A bit 2 / Comparator VREF
2	RA3/AN3/CMP1	الإدخال/الإخراج	Port A bit 3 / Comparator 1 input
3	RA4/T0CKI/CMP2	الإدخال/الإخراج	Port A bit 4 / Timer0 clock / CMP2
4	RA5/MCLR/VPP	المدخلات	Master Clear (reset) / Programming
5	VSS	الطاقة	أرضي
6	RB0/INT	الإدخال/الإخراج	Port B bit 0 / External interrupt
7-13	RB1-RB7	الإدخال/الإخراج	Port B bits 1-7 (shared with serial, CCP)
14	VDD	الطاقة	Supply voltage (3.0-5.5V)
15-17	RA0-RA1/RA6	الإدخال/الإخراج	Port A bits 0-1, 6
18	RA7/OSC1	الإدخال/الإخراج	Port A bit 7 / Oscillator input

Application Scenarios:In which products and applications isPIC16F628A-I/P مستعمل

Educational lab: blinking LED, push-button debounce, and serial output on breadboard
555 timer replacement: generating timed pulses with the CCP module
Serial-to-parallel converter using EUSART and shift register output
Battery monitor using dual comparators and internal VREF

Alternative Models:What chips are recommended as replacements for PIC16F628A-I/P

الشركة المصنعة	رقم الجزء	الحزمة	الملاحظات
الرقاقة الدقيقة	PIC16F648A-I/P	DIP-18	4KB Flash upgrade, pin-compatible
الرقاقة الدقيقة	PIC16F627A-I/P	DIP-18	1KB Flash, lower cost
الرقاقة الدقيقة	PIC16F887-I/P	DIP-40	More I/O, more Flash, larger package
الرقاقة الدقيقة	ATtiny2313A-PU	DIP-20	AVR alternative, 2KB Flash
الرقاقة الدقيقة	PIC16F18426-I/P	DIP-14	Newer PIC, more features, fewer pins