PIC16F819 microcontroller in Pakistan

The PIC16F818/819 belongs to the Mid-Range family of the PICmicro® devices. The devices differ from each other in the amount of Flash program memory, data memory and data EEPROM (see Table 1-1). A block diagram of the devices is shown in Figure 1-1. These devices contain features that are new to the PIC16 product line: • Internal RC oscillator with eight selectable frequencies, including 31.25 kHz, 125 kHz, 250 kHz, 500 kHz, 1 MHz, 2 MHz, 4 MHz and 8 MHz. The INTRC can be configured as the system clock via the configuration bits. Refer to Section 4.5 “Internal Oscillator Block” and Section 12.1 “Configuration Bits” for further details. • The Timer1 module current consumption has been greatly reduced from 20 μA (previous PIC16 devices) to 1.8 μA typical (32 kHz at 2V), which is ideal for real-time clock applications. Refer to Section 6.0 “Timer0 Module” for further details. • The amount of oscillator selections has increased. The RC and INTRC modes can be selected with an I/O pin configured as an I/O or a clock output (FOSC/4). An external clock can be configured with an I/O pin. Refer to Section 4.0 “Oscillator Configurations” for further details.

Special Microcontroller Features: • 100,000 erase/write cycles Enhanced Flash program memory typical • 1,000,000 typical erase/write cycles EEPROM data memory typical • EEPROM Data Retention: > 40 years • In-Circuit Serial ProgrammingTM (ICSPTM) via two pins • Processor read/write access to program memory • Low-Voltage Programming • In-Circuit Debugging via two pins

Peripheral Features: • 16 I/O pins with individual direction control • High sink/source current: 25 mA • Timer0: 8-bit timer/counter with 8-bit prescaler • Timer1: 16-bit timer/counter with prescaler, can be incremented during Sleep via external crystal/clock • Timer2: 8-bit timer/counter with 8-bit period register, prescaler and postscaler • Capture, Compare, PWM (CCP) module: - Capture is 16-bit, max. resolution is 12.5 ns - Compare is 16-bit, max. resolution is 200 ns - PWM max. resolution is 10-bit • 10-bit, 5-channel Analog-to-Digital converter • Synchronous Serial Port (SSP) with SPI™ (Master/Slave) and I2C™ (Slave)

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