MX25L12875FMI-10G

APPLICATION NOTE Macronix MX25Lxx35E/F and MX25Lxx75E/F comparison 1. Introduction Macronix offers MX25Lxx35E/F multi-I/O serial flash in densities from 16Mb to 256Mb. The default I/O mode is Single and Dual I/O only. To enable Quad I/O, HOLD# and WP# must be re-tasked from control inputs to data I/O pins by setting QE=1 (Status Register bit-6). However, some applications may require Quad I/O as the default mode, so Macronix now offers MX25Lxx75E/F from 32Mb to 128Mb with QE preset to ‘1’ . The MX25Lxx35E/F and MX25Lxx75E/F are identical in all ways except the default QE bit status. This application note explains this difference in more detail. 2. Status Register Comparison Both flash families have identical function--only Status Register bit-6 (QE) has a different default setting before shipping. Status Register bit Macronix 25Lxx35E/F Macronix 25Lxx75E/F WIP Bit 0 0 0 1 = write operation WEL 0 0 Bit 1 1 = write enable BP0 0 0 Bit 2 Level of protected block BP1 Bit 3 0 0 Level of protected block BP2 Bit 4 0 0 Level of protected block BP3 0 0 Bit 5 Level of protected block QE Bit 6 0 1 Quad I/O Enable = 1 Quad I/O Disable = 0 Bit 7 SRWD 1 = status register write disable 0 0 3. Quad Mode Introduction (QE bit setting) When QE (Status Register bit-6) is set to ’1’, Quad I/O mode is enabled. WP# and HOLD# functions are re-tasked as data I/O pins only. In other words, HPM (hardware protection) and hold functions can’t be used in Quad I/O mode. If the system requires either function, it may set QE=0 to return to Single and Dual I/O mode only. Note: The QE bit (SR.6) is non-volatile and can be set or cleared by the customer or programmer at any time by using the WRSR command (01h). Publication Number: AN-175V2 1 July 25, 2012 APPLICATION NOTE Macronix MX25Lxx35E/F and MX25Lxx75E/F comparison 4. QE Bit of MX25Lxx75E/F Usage in Application The default QE bit value of the MX25Lxx75E/F is ‘1’. If the system needs Quad I/O mode to be set permanently, there is no need to change the default QE bit value. However, if WP# or Hold# functions are needed at any time, they can be re-enabled by setting the QE bit to ‘0’. Please note that if WP# or Hold# functions are not needed and Quad I/O mode is not used, Single I/O and Dual I/O modes still work with the default setting of QE=1. There is no need for the system to change the default QE bit setting. Figure 1 and Figure 2 show 4 x I/O mode and Quad I/O mode waveforms. When either I/O mode is used, WP# and Hold# pins are used as data I/O pins only. Their original hardware input control functions are disabled and will not be active until QE bit is cleared to ’0’. Figure1: 4xI/O mode ( 1-1-4 mode) wavefrom Figure2: Quad I/O mode ( 1-4-4 mode) waveform Publication Number: AN-175V2 2 July 25, 2012 APPLICATION NOTE Macronix MX25Lxx35E/F and MX25Lxx75E/F comparison 5. Summary Macronix MX25Lxx35E/F and MX25Lxx75E/F have identical functions and performance. Their usage depends on the application requirement; select MX25Lxx75E/F for those applications needing Quad I/O mode as the factory default setting. 6. Appendix The table will show cross device between MX25Lxx35E/F and MX25Lxx75E/F. Density 32Mb 64Mb 128Mb MX25Lxx35E/F (default: QE = 0) MX25L3235EMI-10G MX25L3235EM2I-10G MX25L3235EZNI-10G MX25L6435EMI-10G MX25L6435EM2I-10G MX25L6435EZNI-10G MX25L12835FMI-10G MX25L12835FM2I-10G MX25L12835FZNI-10G MX25L12835FZ2I-10G MX25Lxx75E/F (default: QE = 1) MX25L3275EMI-10G MX25L3275EM2I-10G MX25L3275EZNI-10G MX25L6475EMI-10G MX25L6475EM2I-10G MX25L6475EZNI-10G MX25L12875FMI-10G MX25L12875FM2I-10G MX25L12875FZNI-10G MX25L12875FZ2I-10G Package 300mil 16-SOP 209mil 8-SOP 6x5mm 8-WSON 300mil 16-SOP 209mil 8-SOP 6x5mm 8-WSON 300mil 16-SOP 209mil 8-SOP 6x5mm 8-WSON 8x6mm 8-WSON 7. Data Sheet Version The following data sheets are used for comparison in this application note. Data sheet Location Date Issue Revision MX25L3235E Website May. 07, 2012 Rev. 1.0 MX25L3275E Website Apr. 24, 2012 Rev. 0.00 MX25L6435E Website Apr. 19, 2012 Rev. 0.05 MX25L6475E Website Apr. 24, 2012 Rev. 0.00 MX25L12835F Website Apr. 17, 2012 Rev. 0.01 MX25L12875F Website Jun. 15, 2012 Rev. 0.00 Note: 1. Macronix data sheet is subject to change without notice. 2. For more functional and parametric specifications, please refer to the datasheet on the Macronix Website at http://www.macronix.com/ and go to: Products/Flash Memory/Serial Flash. Publication Number: AN-175V2 3 July 25, 2012 APPLICATION NOTE Macronix MX25Lxx35E/F and MX25Lxx75E/F comparison Except for customized products which have been expressly identified in the applicable agreement, Macronix's products are designed, developed, and/or manufactured for ordinary business, industrial, personal, and/or household applications only, and not for use in any applications which may, directly or indirectly, cause death, personal injury, or severe property damages. In the event Macronix products are used in contradicted to their target usage above, the buyer shall take any and all actions to ensure said Macronix's product qualified for its actual use in accordance with the applicable laws and regulations; and Macronix as well as it’s suppliers and/or distributors shall be released from any and all liability arisen therefrom. Copyright© Macronix International Co., Ltd. 2011~2012. All rights reserved, including the trademarks and tradename thereof, such as Macronix, MXIC, MXIC Logo, MX Logo, Integrated Solutions Provider, NBit, Nbit, NBiit, Macronix NBit, eLiteFlash, HybridNVM, HybridFlash, XtraROM, Phines, KH Logo, BE-SONOS, KSMC, Kingtech, MXSMIO, Macronix vEE, Macronix MAP, Rich Au-dio, Rich Book, Rich TV, and FitCAM. The names and brands of third party referred thereto (if any) are for identification purposes only For the contact and order information, please visit Macronix’s Web site at: http://www.macronix.com Publication Number: AN-175V2 4 July 25, 2012