參數(shù)資料
型號(hào)： AM29BDS64HD9VFI
廠商： Spansion Inc.
英文描述： 128 or 64 Megabit (8 M or 4 M x 16-Bit) CMOS 1.8 Volt-only Simultaneous Read/Write, Burst Mode Flash Memory
中文描述： 128或64兆位（8米或4個(gè)M x 16位）的CMOS 1.8伏，只有同時(shí)讀/寫(xiě)，突發(fā)模式閃存
文件頁(yè)數(shù)： 45/89頁(yè)
文件大?。?/td> 913K
代理商： AM29BDS64HD9VFI
May 10, 2006 27024B3
Am29BDS128H/Am29BDS640H
43
D A T A S H E E T
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 (Amax–A12) are written at
the same time as the program command 60h. If the
PPB Lock Bit is set and the correspondingly PPB is
set for the sector, the PPB Program command will not
execute and the command will time out without pro-
gramming the PPB. After issuing “SBA+WP/68h” at
the fourth bus cycle, the device requires a time out pe-
riod of approximately 150 μs to program the PPB.
Writing “SBA+WP/48” at the fifth bus cycle produces
verify data at DQ0. If DQ0 = 1, the PPB is pro-
grammed. If not, the system must repeat this program
sequence from the fourth cycle of “SBA+WP/68h”.
The PPB Program command does not follow the
Embedded Program algorithm. Writing the SecSi
Sector Exit command or Read/Reset command return
the device back to normal operation.
All PPB Erase Command
The All PPB Erase command is used to erase all
PPBs in bulk. There is no means for individually eras-
ing a specific PPB. Unlike the PPB program, no spe-
cific sector address is required. However, when the
PPB erase command is written (60h), all Sector PPBs
are erased in parallel. If the PPB Lock Bit is set, the
ALL PPB Erase command will not execute and the
command will time-out without erasing the PPBs. After
issuing “WP/60h” at the fourth bus cycle, the device re-
quires a time out period of approximately 1.5 ms to
erase the PPB. Writing “SBA+WP/40h” at the fifth bus
cycle produces verify data at DQ0. If DQ0 = 0, the
PPB is erased. If not, the system must repeat this pro-
gram sequence from the fourth cycle of “WP/60h”.
It is the responsibility of the system to preprogram all
PPBs prior to issuing the All PPB Erase command. If
the system attempts to erase a cleared PPB, over-era-
sure 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.
Writing the SecSi Sector Exit command or Read/Re-
set command return the device to normal operation.
相關(guān)PDF資料
PDF描述
AM29BDS64HD9VKI 128 or 64 Megabit (8 M or 4 M x 16-Bit) CMOS 1.8 Volt-only Simultaneous Read/Write, Burst Mode Flash Memory
AM29BDS64HD9VMI 128 or 64 Megabit (8 M or 4 M x 16-Bit) CMOS 1.8 Volt-only Simultaneous Read/Write, Burst Mode Flash Memory
AM29BDS64HE8VFI 128 or 64 Megabit (8 M or 4 M x 16-Bit) CMOS 1.8 Volt-only Simultaneous Read/Write, Burst Mode Flash Memory
AM29BDS64HE8VKI 128 or 64 Megabit (8 M or 4 M x 16-Bit) CMOS 1.8 Volt-only Simultaneous Read/Write, Burst Mode Flash Memory
AM29BDS64HE8VMI 128 or 64 Megabit (8 M or 4 M x 16-Bit) CMOS 1.8 Volt-only Simultaneous Read/Write, Burst Mode Flash Memory
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