Flash 9 Click Board™

Product Code: MIKROE-4987

How Does The Flash 9 Click Board™ Work? The Flash 9 Click Board™ is based on the the W25Q02JV, a highly reliable serial Flash memory solution offering flexibility and performance well beyond ordinary Serial Flash devices from Winbond Electronics. The W25Q02JV represents a four 512Mb stack die where only one can be active at any given time to communicate with the external SPI controller. It supports linear addressing for the full 2Gb memory address range (continuously-read accessible only into four separate 512Mb address memory segments). The W25Q02JV array is organized into 1,048,576 programmable pages of 256-bytes each, where up to 256 bytes can be programmed at a time. Pages of the W25Q02JV can be erased in groups of 16 (4KB sector erase), groups of 128 (32KB block erase), groups of 256 (64KB block erase), or the entire chip (chip erase). This IC has 32,768 erasable 4KB sectors and 2,048 erasable 64KB blocks, respectively. The small 4KB sectors allow for greater flexibility in applications that require data and parameter storage.

Also, it specifies a minimum of 100.000 endurance cycles with data retention of a minimum of 20 years, which gives the W25Q02JV the capability to handle unlimited reads/writes to the memory. The Flash 9 Click Board™ communicates with MCU through a standard SPI interface that enables high clock speed, supporting the two most common SPI modes, SPI Mode 0 and 3. Alongside the internal software Reset sequence, this board also has an active-low reset signal routed on the RST pin of the mikroBUS™ socket used to reset the W25Q02JV to the initial power-on state. When this signal is asserted low, any ongoing program/erase operation will be interrupted, and data corruption may happen (the device will not accept any command input). An additional feature of this Click board™ represents the configurable Write Protection function labelled as WP routed on the AN pin of the mikroBUS™ socket. The WP pin protects the entire memory and all registers from write operations and must be set to a low logic state to inhibit all the write operations. Besides, the Flash 9 Click also has an additional hold pin, labelled as HLD and routed to the PWM pin of the mikroBUS™ socket, allowing the device to be paused while it's still actively selected. The Flash 9 Click Board™ can be operated only with a 3.3V logic voltage level. The board must perform appropriate logic voltage level conversion before using MCUs with different logic levels. However, the Click board™ comes equipped with a library containing functions and an example code that can be used, as a reference, for further development. SPECIFICATIONS Type FLASH Applications Can be used to provide a storage solution for limited space and power systems in various embedded applications On-board modules W25Q02JV - SPI configurable serial Flash memory solution from Winbond Electronics Key Features High performance, low power consumption, reliability, flexible architecture with 4KB sectors, advanced security features, data retention, and more. Interface SPI Compatibility mikroBUS Click board size S (28.6 x 25.4 mm) Input Voltage 3.3V PINOUT DIAGRAM This table shows how the pinout of the Flash 9 Click Board™ corresponds to the pinout on the mikroBUS™ socket (the latter shown in the two middle columns). Notes Pin Pin Notes Write Protect WP 1 AN PWM 16 HLD SPI Suspension Reset RST 2 RST INT 15 NC SPI Chip Select CS 3 CS RX 14 NC SPI Clock SCK 4 SCK TX 13 NC SPI Data OUT SDO 5 MISO SCL 12 NC SPI Data IN SDI 6 MOSI SDA 11 NC Power Supply 3.3V 7 3.3V 5V 10 NC Ground GND 8 GND GND 9 GND Ground ONBOARD SETTINGS AND INDICATORS Label Name Default