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  • 參數(shù)資料
    型號(hào)： W19B320ABBBG
    廠商： WINBOND ELECTRONICS CORP
    元件分類： PROM
    英文描述： 2M X 16 FLASH 3V PROM, 70 ns, PBGA48
    封裝： 6 X 8 MM, 0.80 MM PITCH, TFBGA-48
    文件頁數(shù)： 3/53頁
    文件大?。?/td> 479K
    代理商： W19B320ABBBG
    W19B320AT/B
    Publication Release Date: December 27, 2005
    - 11 -
    Revision A4
    In devices with an ESN, the Bottom Boot device will be with the 16-byte ESN in the lowest
    addressable memory area at addresses 000000h–000007h in word mode (or 000000h–00000Fh in
    byte mode). In the Top Boot device the starting address of the ESN will be at the bottom of the highest
    8 Kbytes boot sector at addresses 1FF000h–1FF007h in word mode (or addresses 3FE000h–
    3FE00Fh in byte mode). Customers may choose have their code programmed by Winbond. Winbond
    can program the customer’s code, with or without the random ESN. The devices are then shipped with
    the Security Sector permanently locked.
    Customer Lockable: Security Sector NOT Programmed or Protected At the Factory
    If the security feature is not necessary, the Security Sector can be seen as an additional OTP memory
    space. When in system design, this issue should be considered. The Security Sector can be read,
    programmed; but cannot be erased. Please note that when programming the Security Sector, the
    accelerated programming (ACC) and unlock bypass functions are not available. The Security Sector
    area can be protected using one of the following procedures:
    Write the three-cycle Enter Security Sector Region command sequence, and then follow the
    in-system sector protect algorithm, except that #RESET may be at either V IH or VID. This
    allows in-system protection of the Security Sector without raising any device pin to a high
    voltage.
    Please note that this method is only suitable for the Security Sector.
    To verify the protect/unprotect status of the Security Sector; follow the algorithm show in
    Security Sector Protect Verify.
    The Security Sector protection must be used with caution, since there is no procedure available for
    unprotect the Security Sector area and none of the bits in the Security Sector memory space can be
    modified in any ways.
    6.1.14 Hardware Data Protection
    The command sequence requirements of unlock cycles for programming or erasing provides data
    protection against negligent writes. In addition, the following hardware data protection measures
    prevent inadvertent erasure or programming, which might be caused by spurious system level signals
    during VDD power-up and power-down transitions, or from system noise.
    Write Pulse “Glitch” Protection
    Noise pulses, which is less than 5 ns (typical) on #OE, #CE or #WE, do not initiate a write cycle.
    Logical Inhibit
    Write cycles are inhibited by holding any one of #OE = VIL, #CE = VIH or #WE = VIH. #CE and #WE
    must be a logical zero while #OE is a logical one to initiate a write cycle.
    Power-Up Write Inhibit
    During power up, if #WE = #CE = VIL and #OE = VIH, the device does not accept commands on the
    rising edge of #WE. The internal state machine is automatically reset to the read mode on power-up.
    相關(guān)PDF資料
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    相關(guān)代理商/技術(shù)參數(shù)
    參數(shù)描述
    W19B320ABT7H 功能描述:IC FLASH 32MBIT 70NS 48TSOP RoHS:是 類別:集成電路 (IC) >> 存儲(chǔ)器 系列:- 標(biāo)準(zhǔn)包裝:1,000 系列:- 格式 - 存儲(chǔ)器:RAM 存儲(chǔ)器類型:移動(dòng) SDRAM 存儲(chǔ)容量:256M（8Mx32） 速度:133MHz 接口:并聯(lián) 電源電壓:1.7 V ~ 1.95 V 工作溫度:-40°C ~ 85°C 封裝/外殼:90-VFBGA 供應(yīng)商設(shè)備封裝:90-VFBGA（8x13） 包裝:帶卷 (TR) 其它名稱:557-1327-2
    W19B320ATB 制造商:WINBOND 制造商全稱:Winbond 功能描述:4M × 8/2M × 16 BITS 3V FLEXIBLE BANK FLASH MEMORY
    W19B320ATB7H 功能描述:IC FLASH 32MBIT 70NS 48TFBGA RoHS:是 類別:集成電路 (IC) >> 存儲(chǔ)器 系列:- 標(biāo)準(zhǔn)包裝:1,000 系列:- 格式 - 存儲(chǔ)器:RAM 存儲(chǔ)器類型:移動(dòng) SDRAM 存儲(chǔ)容量:256M（8Mx32） 速度:133MHz 接口:并聯(lián) 電源電壓:1.7 V ~ 1.95 V 工作溫度:-40°C ~ 85°C 封裝/外殼:90-VFBGA 供應(yīng)商設(shè)備封裝:90-VFBGA（8x13） 包裝:帶卷 (TR) 其它名稱:557-1327-2
    W19B320ATT7H 功能描述:IC FLASH 32MBIT 70NS 48TSOP RoHS:是 類別:集成電路 (IC) >> 存儲(chǔ)器 系列:- 標(biāo)準(zhǔn)包裝:1,000 系列:- 格式 - 存儲(chǔ)器:RAM 存儲(chǔ)器類型:移動(dòng) SDRAM 存儲(chǔ)容量:256M（8Mx32） 速度:133MHz 接口:并聯(lián) 電源電壓:1.7 V ~ 1.95 V 工作溫度:-40°C ~ 85°C 封裝/外殼:90-VFBGA 供應(yīng)商設(shè)備封裝:90-VFBGA（8x13） 包裝:帶卷 (TR) 其它名稱:557-1327-2
    W19B320B 制造商:WINBOND 制造商全稱:Winbond 功能描述:32Mbit, 2.7~3.6-volt single bank CMOS flash memory
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