PIC18F4550 Flash 40-pin 32kB 48MHz Microcontroller (Microchip)

Specifications of PIC18F4550 USB Micro Controller 

1. 40-pin Low Power Microcontroller
2. Flash Program Memory: 32 kbytes
3. EEPROM Data Memory: 256 bytes
4. SRAM Data Memory: 2048 bytes
5. I/O Pins: 35
6. Timers: One 8-bit / Three 16-Bit
7. A/D Converter: 10-bit Thirteen Channels
8. PWM: 10-bit Two Modules
9. Enhanced USART: Addressable with RS-485, RS-232 and LIN Support
10. MSSP: SPI and I²C Master and Slave Support
11. External Oscillator: up to 48MHz
12. Internal Oscillator: 8MHz

Feature of PIC18F4550 USB Micro Controller 

1. Power Management Features

   1. Run: CPU on, Peripherals on
   2. Idle: CPU off, Peripherals on
   3. Sleep: CPU off, Peripherals off
   4. Idle mode Currents Down to 5.8 μA Typical
   5. Sleep mode Current Down to 0.1 μA Typical
   6. Timer1 Oscillator: 1.1 μA, 32 kHz, 2V
   7. Watchdog Timer: 2.1 μA,32 kHz, 2V Typical
   8. Two-Speed Oscillator Start-up

2. Flexible Oscillator Structure:

   1. Four Crystal modes, up to 48 MHz
   2. Internal Oscillator Block:
      1. 8 user-selectable frequencies, from 31 kHz to 8 MHz
      2. User-tunable to compensate for frequency drift
   3. Secondary Oscillator using Timer1 @ 32 kHz
   4. Fail-Safe Clock Monitor:
      1. Allows for a safe shutdown if the peripheral clock stops

3. Peripheral Highlights:

   1. High-Current Sink/Source 25 mA/25 mA
   2. Three Programmable External Interrupts
   3. Four Input Change Interrupts
   4. Up to 2 Capture/Compare/PWM (CCP) modules, one with Auto-Shutdown (28-pin devices)
   5. Enhanced Capture/Compare/PWM (ECCP) module (40/44-pin devices only):
      1. One, two or four PWM outputs
      2. Selectable polarity
      3. Programmable dead time
      4. Auto-shutdown and auto-restart

4. Peripheral Highlights (Continued):

   1. Master Synchronous Serial Port (MSSP) module Supporting 3-Wire SPI (all 4 modes) and I2C™ Master and Slave modes
   2. Enhanced Addressable USART module:
      1. Supports RS-485, RS-232 and LIN/J2602
      2. RS-232 operation using internal oscillator block (no external crystal required)
      3. Auto-wake-up on Start bit
      4. Auto-Baud Detect
   3. 10-Bit, up to 13-Channel Analog-to-Digital (A/D)
   4. Converter module:
      1. Auto-acquisition capability
      2. Conversion available during Sleep
   5. Dual Analog Comparators with Input Multiplexing
   6. Programmable 16-Level High/Low-Voltage
   7. Detection (HLVD) module:
      1. Supports interrupt on High/Low-Voltage Detection

5. Special Microcontroller Features:

   1. C Compiler Optimized Architecture:
      1. Optional extended instruction set designed to optimize re-entrant code
   2. 100,000 Erase/Write Cycle Enhanced Flash Program Memory Typical
   3. 1,000,000 Erase/Write Cycle Data EEPROM Memory Typical
   4. Flash/Data EEPROM Retention: 100 Years Typical
   5. Self-Programmable under Software Control

   6. Priority Levels for Interrupts

   7. 8 x 8 Single-Cycle Hardware Multiplier

   8. Extended Watchdog Timer (WDT):

      1. Programmable period from 4 ms to 131s

   9. Single-Supply 5V In-Circuit Serial Programming™ (ICSP™) via Two Pins

   10. In-Circuit Debug (ICD) via Two Pins

   11. Wide Operating Voltage Range: 2.0V to 5.5V

   12. Programmable Brown-out Reset (BOR) with Software Enable Option

Package includes:

1 x PIC18F4550 USB Micro Controller

The focus keyphrase is the phrase that you want your post or page to be found for in search engines. Sometimes, it is a single word, but it usually consists of a few words. That’s why we call it a keyphrase. For example, if you want your blog post to rank for ‘healthy snacks’, then optimize your post for that term. Your focus keyphrase can also be longer. For instance, you could write an article about healthy snacks specifically made for kids and optimize for ‘healthy snacks for kids’. Or a post about healthy snacks to eat after a workout, and optimize for ‘healthy snacks after workout’.

You can also choose to optimize for a longer, more specific keyphrase, represented by the tail in the image above. These longer keyphrases are also called long-tail keyphrases. They get less search traffic, but they usually have a higher conversion value. That is because they focus more on a specific product or topic. For example, a lot of people would probably search for the generic term ‘snacks’. And, fewer people would search for the long tail keyphrase – ‘healthy snacks for children’. Still, there’s a higher chance that the people who use the long tail keyphrase will find what they are looking for because they used a more specific term.

Back to the length of your keyphrase. In Yoast SEO, we’ll check how long we’ll provide you wgsite structure guide] more often in your copy. Even if you don’t have to write those exact words in the same order, this will probably r

Back to the length of your keyphrase. In Yoast SEO, we’ll chse ’ll provide you with feedback if i

h engines. Sometimes, it is a single word, but it usually consists of a few words. That’s why we call it a keyphrase. For example, if you want your blog post to rank for ‘healthy snacks’, then optimize your post for that term. Your focus keyphrase can also be longer. For instance, you could write an article about healthy snacks specifically made for kids and optimize for ‘healthy snacks for kids’. Or a post about healthy snacks to eat after a workout, and optimize for ‘healthy snacks after workout’.h engines. Sometimes, it is a single word, but it usually consists of a few words. That’s why we call it a keyphrase. For example, if you want your blog post to rank for ‘healthy snacks’, then optimize your post for that term. Your focus keyphrase can also be longer. For instance, you could write an article about healthy snacks specifically made for kids and optimize for ‘healthy snacks for kids’. Or a post about healthy snacks to eat after a workout, and optimize for ‘healthy snacks after workout’.