PIC16F689-E/SO

Program Memory Type:	FLASH
Base Part Number:	PIC16F689
Supplier Device Package:	20-SOIC
Package / Case:	20-SOIC (0.295", 7.50mm Width)
Operating Temperature:	-40°C ~ 125°C (TA)
Oscillator Type:	Internal
Data Converters:	A/D 12x10b
Voltage - Supply (Vcc/Vdd):	2 V ~ 5.5 V
RAM Size:	256 x 8
EEPROM Size:	256 x 8
Series:	PIC® 16F
Program Memory Size:	7KB (4K x 14)
Number of I/O:	18
Peripherals:	Brown-out Detect/Reset, POR, WDT
Connectivity:	I²C, SPI, UART/USART
Speed:	20MHz
Core Size:	8-Bit
Core Processor:	PIC
Part Status:	Active
Packaging:	Tube

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Introduction

PIC16F689-E/SO is an 8-bit microcontroller (MCU) from Microchip Technology’s PIC16 family. This tiny MCU is designed for a wide range of cost-sensitive applications including power-efficient and low-power embedded applications. It is an 8-bit Flash-based device with 18 I/O pins, an 8-bit Timer/Counter (TMR1) with an 8-level hardware stack, and USART, MSSP, and SPI communication capability.PIC16F689-E/SO MCUs are programmed with a configuration fuses, providing a high level of flexibility and control of its behavior. These configuration fuses allow the user to select a number of options, such as oscillator type, low-voltage programming (LVP) enable/disable, code protect, watchdog timer enable/disable, and interrupt enable/disable.

Application Fields

The main application fields of PIC16F689-E/SO MCUs include: 1. Automotive: PIC16F689-E/SO MCUs provide cost-efficient automotive solutions for battery management, engine control, and various safety applications.2. Consumer Electronics: PIC16F689-E/SO MCUs are widely used in consumer electronics, such as household appliances, personal digital assistants (PDAs), and toys.3. Industrial: PIC16F689-E/SO MCUs provide solutions for industrial control applications, such as factory automation, and equipment monitoring.4. Medical: PIC16F689-E/SO MCUs are used for various medical applications, such as patient monitoring, medical imaging, and medical instrumentation. 5. Telecommunications: PIC16F689-E/SO MCUs are widely used in telecommunication systems, such as cellular phones, modems and internet appliances.

Working Principle

PIC16F689-E/SO MCUs feature a 16-bit Harvard architecture, meaning it has separate instruction and data buses. This allows the device to access multiple memory locations simultaneously with both the program memory (in Flash memory) and the data memory (in either RAM or EEPROM).The PIC16F689-E/SO includes an On-Chip Oscillator block, which works in conjunction with an external crystal or resistor/capacitor (RC) circuit to provide an accurate system clock and instruction timing.PIC16F689-E/SO MCUs also feature Power-On Reset (POR) circuitry, which detects changes in the VDD level and resets the device after a power-on.The PIC16F689-E/SO includes a Voltage Reference and Comparator module, which is used to monitor the supply voltage and detect sudden changes in the power supply. The detection of a low voltage level will result in an interrupt, which can be used for critical power management functions.PIC16F689-E/SO MCUs also feature Alternate Function Input/Output (AFIO) blocks, which enable multiple pins to be used as one pin. This feature greatly reduces the cost and complexity of implementing peripherals.Finally, PIC16F689-E/SO MCUs include multiple peripheral modules, including an 8-bit Timer/Counter (TMR1) with eight-level hardware stack, USART, MSSP, and SPI communication capabilities, and essential peripherals such as Universal Synchronous Asynchronous Reception/Transmission (USART) and Master Synchronous Serial/Parallel (MSSP) support.

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