Part # Application Notes Access Control Accessories Adapters Data Storage Devices Distribution Driver Information And Entertainment Fac datasheet

Part Manufacturer: ST Microelectronics

ST Microelectronics

Part Description: Communication between small page NAND and ST72651AR6 using I Os


Part Details:

AN2632 Application note Communication between small page NAND and ST72651AR6 using I/O s Introduction This application note presents the practical example of communication between microcontroller and NAND Flash using general purpose input/output ports (GPIOs). This document describes the hardware connections and software necessary to establish communication between the STMicroelectronics small page NAND Flash memory and input/output ports of the ST7 microcontroller. We have used the ST72651AR6 for the firmware description, but any ST7 MCU can be used as well. The devices covered by this application note are: NAND128W3A NAND256W3A NAND512W3A NAND01GW3A October 2007 Rev 1 1/12 www.st.com Contents AN2632 Contents 1 NAND Flash overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 1.1 Signal description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 1.2 Memory array organization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 2 Hardware interface with microcontroller . . . . . . . . . . . . . . . . . . . . . . . . . 6 3 Firmware . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 3.1 NAND basic functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 3.2 Remaining NAND functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 4 References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 5 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 2/12 AN2632 NAND Flash overview 1 NAND Flash overview The NAND Flash 528 Byte / 264 Word page is a family of non-volatile Flash memories that uses the Single Level Cell (SLC) NAND cell technology. It is referred to as the small page family. The devices range from 128 Mbits to 1Gbit and operate with either a 1.8 V or 3 V voltage supply. The size of a page is either 528 Bytes (512 + 16 spare) or 264 Words (256 + 8 spare) depending on whether the device has an x8 or x16 bus width. The address lines are multiplexed with the data input/output signals on a multiplexed x8 or x16 input/output bus. 1.1 Signal description Table 1 describes all the small page NAND Flash signals. Figure 1 shows the logical diagram of NAND Flash. Table 3 describes the microcontroller signals used to connect to the small page NAND devices. Table 1. Small page NAND Flash signal description Signal Signal name Description


Please click the following link to download the datasheet:

Application Notes Access Control Accessories Adapters Data Storage Devices Distribution Driver Information And Entertainment Fac.pdf Datasheet