參數(shù)資料
型號(hào)： S29CD016G0JFFM012
廠商： Spansion Inc.
英文描述： 32 Megabit (1M x 32-Bit), 16 Megabit (512K x 32-Bit) 2.5 Volt-only Burst Mode, Dual Boot, Simultaneous Read/ Write Flash Memory with VersatileI/O
中文描述： 32兆位（1米× 32位），16兆位（512k × 32的位），2.5伏，只有突發(fā)模式，雙啟動(dòng)，同步讀/寫閃存與VersatileI內(nèi)存/輸出
文件頁數(shù)： 54/87頁
文件大?。?/td> 792K
代理商： S29CD016G0JFFM012
52
S29CD-G Flash Family
S29CD-G_00_B0 November 14, 2005
P r e l i m i n a r y
The Password Unlock function is accomplished by writing Password Unlock command and data to
the device to perform the clearing of the PPB Lock Bit. The password is 64 bits long, so the user
must write the Password Unlock command 2 times for a x32 bit data bus. A0 is used to determine
whether the 32 bit data quantity is used to match the upper 32 bits or lower 32 bits. Writing the
Password Unlock command is address order specific. In other words, for the x32 data bus config-
uration, the lower 32 bits of the password are written first and then the upper 32 bits of the
password are written. Writing out of sequence results in the Password Unlock not returning a
match with the password and the PPB Lock Bit remains set.
Once the Password Unlock command is entered, the RY/BY# pin goes LOW indicating that the
device is busy. Also, reading the small bank (25% bank) results in the DQ6 pin toggling, indicating
that the Password Unlock function is in progress. Reading the large bank (75% bank) returns ac-
tual array data. Approximately 1uSec is required for each portion of the unlock. Once the first
portion of the password unlock completes (RY/BY# is not driven and DQ6 does not toggle when
read), the Password Unlock command is issued again, only this time with the next part of the
password. The second Password Unlock command is the final command before the PPB Lock Bit
is cleared (assuming a valid password). As with the first Password Unlock command, the RY/BY#
signal goes LOW and reading the device results in the DQ6 pin toggling on successive read oper-
ations until complete. It is the responsibility of the microprocessor to keep track of the number
of Password Unlock commands (2 for x32 bus), the order, and when to read the PPB Lock bit to
confirm successful password unlock
The Password Unlock command is permitted if the Secured Silicon sector is enabled.
PPB Program Command
The PPB Program command is used to program, or set, a given PPB. Each PPB is individually pro-
grammed (but is bulk erased with the other PPBs). The specific sector address (A19–A11) are
written at the same time as the program command 60h with A6 = 0. If the PPB Lock Bit is set
and the corresponding PPB is set for the sector, the PPB Program command does not execute and
the command times-out without programming the PPB.
The host system must determine whether a PPB is fully programmed by noting the status of DQ0
in the sixth cycle of the PPB Program command. If DQ0 = 0, the entire six-cycle PPB Program
command sequence must be reissued until DQ0 = 1.
All PPB Erase Command
The All PPB Erase command is used to erase all PPBs in bulk. There is no means for individually
erasing a specific PPB. Unlike the PPB program, no specific sector address is required. However,
when the PPB erase command is written (60h) and A6 = 1, all Sector PPBs are erased in parallel.
If the PPB Lock Bit is set the ALL PPB Erase command does not execute and the command times-
out without erasing the PPBs. The host system must determine whether all PPB was fully erased
by noting the status of DQ0 in the sixth cycle of the All PPB Erase command. If DQ0 = 1, the entire
six-cycle All PPB Erase command sequence must be reissued until DQ0 = 1.
It is the responsibility of the user to preprogram all PPBs prior to issuing the All PPB Erase com-
mand. If the user attempts to erase a cleared PPB, over-erasure may occur making it difficult to
program the PPB at a later time. Also note that the total number of PPB program/erase cycles is
limited to 100 cycles. Cycling the PPBs beyond 100 cycles is not guaranteed.
The All PPB Erase command is permitted if the Secured Silicon sector is enabled.
DYB Write
The DYB Write command is used for setting the DYB, which is a volatile bit that is cleared at reset.
There is one DYB per sector. If the PPB is set, the sector is protected regardless of the value of
the DYB. If the PPB is cleared, setting the DYB to a 1 protects the sector from programs or erases.
相關(guān)PDF資料
PDF描述
S29CD016G0JFFM100 32 Megabit (1M x 32-Bit), 16 Megabit (512K x 32-Bit) 2.5 Volt-only Burst Mode, Dual Boot, Simultaneous Read/ Write Flash Memory with VersatileI/O
S29CD016G0JFFM102 32 Megabit (1M x 32-Bit), 16 Megabit (512K x 32-Bit) 2.5 Volt-only Burst Mode, Dual Boot, Simultaneous Read/ Write Flash Memory with VersatileI/O
S29CD016G0JFFM110 32 Megabit (1M x 32-Bit), 16 Megabit (512K x 32-Bit) 2.5 Volt-only Burst Mode, Dual Boot, Simultaneous Read/ Write Flash Memory with VersatileI/O
S29CD016G0JFFM112 32 Megabit (1M x 32-Bit), 16 Megabit (512K x 32-Bit) 2.5 Volt-only Burst Mode, Dual Boot, Simultaneous Read/ Write Flash Memory with VersatileI/O
S29CD016G0JFFM200 32 Megabit (1M x 32-Bit), 16 Megabit (512K x 32-Bit) 2.5 Volt-only Burst Mode, Dual Boot, Simultaneous Read/ Write Flash Memory with VersatileI/O
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
S29CD016G0JFFM100 制造商:SPANSION 制造商全稱:SPANSION 功能描述:32 Megabit (1M x 32-Bit), 16 Megabit (512K x 32-Bit) 2.5 Volt-only Burst Mode, Dual Boot, Simultaneous Read/ Write Flash Memory with VersatileI/O
S29CD016G0JFFM102 制造商:SPANSION 制造商全稱:SPANSION 功能描述:32 Megabit (1M x 32-Bit), 16 Megabit (512K x 32-Bit) 2.5 Volt-only Burst Mode, Dual Boot, Simultaneous Read/ Write Flash Memory with VersatileI/O
S29CD016G0JFFM110 制造商:SPANSION 制造商全稱:SPANSION 功能描述:32 Megabit (1M x 32-Bit), 16 Megabit (512K x 32-Bit) 2.5 Volt-only Burst Mode, Dual Boot, Simultaneous Read/ Write Flash Memory with VersatileI/O
S29CD016G0JFFM112 制造商:SPANSION 制造商全稱:SPANSION 功能描述:32 Megabit (1M x 32-Bit), 16 Megabit (512K x 32-Bit) 2.5 Volt-only Burst Mode, Dual Boot, Simultaneous Read/ Write Flash Memory with VersatileI/O
S29CD016G0JFFM200 制造商:SPANSION 制造商全稱:SPANSION 功能描述:32 Megabit (1M x 32-Bit), 16 Megabit (512K x 32-Bit) 2.5 Volt-only Burst Mode, Dual Boot, Simultaneous Read/ Write Flash Memory with VersatileI/O
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。

采購需求

(若只采購一條型號(hào)，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購

我的聯(lián)系方式

*
*
*