參數(shù)資料
型號(hào)： AM29BDS643GT7KVAI
廠商： Spansion Inc.
英文描述： 64 Megabit (4 M x 16-Bit) CMOS 1.8 Volt-only Simultaneous Read/Write, Burst Mode Flash Memory
中文描述： 64兆位（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)： 29/49頁(yè)
文件大?。?/td> 382K
代理商： AM29BDS643GT7KVAI
May 8, 2006 25692A2
Am29BDS643G
27
D A T A S H E E T
RDY: Ready
The RDY is a dedicated output that indicates (when at
logic low) the system should wait until RDY returns high
before expecting the next word of data.
RDY functions only while reading data in burst mode.
The following conditions cause the RDY output to be
low: during the initial access (in burst mode); after the
boundary that occurs every 64 words beginning with
the 63rd address, 3Eh; and when the clock frequency
is less than 6 MHz (in which case RDY is low every third
clock). The RDY pin will also switch during status reads
if there is a clock signal at the CLK input. If RDY goes
low, it indicates that the status data is not yet valid and
that the system should wait until RDY returns high.
DQ6: Toggle Bit I
Toggle Bit I on DQ6 indicates whether an Embedded
Program or Erase algorithm is in progress or complete,
or whether the device has entered the Erase Suspend
mode. Toggle Bit I may be read at any address in the
same bank, and is valid after the rising edge of the final
WE# pulse in the command sequence (prior to the
program or erase operation), and during the sector
erase time-out.
During an Embedded Program or Erase algorithm
operation, successive read cycles to any address
cause DQ6 to toggle. Note that OE# must be low during
toggle bit status reads. When the operation is com-
plete, DQ6 stops toggling.
After an erase command sequence is written, if all
sectors selected for erasing are protected, DQ6 toggles
for approximately 100 μs, then returns to reading array
data. If not all selected sectors are protected, the
Embedded Erase algorithm erases the unprotected
sectors, and ignores the selected sectors that are pro-
tected.
The system can use DQ6 and DQ2 together to deter-
mine whether a sector is actively erasing or is
erase-suspended. When the device is actively erasing
(that is, the Embedded Erase algorithm is in progress),
DQ6 toggles. When the device enters the Erase
Suspend mode, DQ6 stops toggling. However, the
system must also use DQ2 to determine which sectors
are erasing or erase-suspended. Alternatively, the
system can use DQ7 (see the subsection on DQ7:
Data# Polling).
If a program address falls within a protected sector,
DQ6 toggles for approximately 1
μ
s after the program
command sequence is written, then returns to reading
array data.
DQ6 also toggles during the erase-suspend-program
mode, and stops toggling once the Embedded
Program algorithm is complete.
See the following for additional information: Figure 4
(toggle bit flowchart), DQ6: Toggle Bit I (description),
Figure 17 (toggle bit timing diagram), and Table 11
(compares DQ2 and DQ6).
Figure 4.
Toggle Bit Algorithm
START
No
Yes
Yes
DQ5 = 1
No
Yes
DQ6 = Toggle
No
Read Byte
(DQ0-DQ7)
Address = VA
DQ6 = Toggle
Read Byte Twice
(DQ 0-DQ7)
Adrdess = VA
Read Byte
(DQ0-DQ7)
Address = VA
FAIL
PASS
Note:
The system should recheck the toggle bit even if DQ5
= “1” because the toggle bit may stop toggling as DQ5
changes to “1.” See the subsections on DQ6 and DQ2 for
more information.
相關(guān)PDF資料
PDF描述
AM29BL162CB-120R 16 Megabit (1 M x 16-Bit) CMOS 3.0 Volt-only Burst Mode Flash Memory
AM29BL162CB120RZE 16 Megabit (1 M x 16-Bit) CMOS 3.0 Volt-only Burst Mode Flash Memory
AM29BL162CB120RZF 16 Megabit (1 M x 16-Bit) CMOS 3.0 Volt-only Burst Mode Flash Memory
AM29BL162CB120RZI 16 Megabit (1 M x 16-Bit) CMOS 3.0 Volt-only Burst Mode Flash Memory
AM29BL162CB120RZK 16 Megabit (1 M x 16-Bit) CMOS 3.0 Volt-only Burst Mode Flash Memory
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
AM29BL802CB-65RZET 制造商:Spansion 功能描述:
AM29C01WW WAF 制造商:Advanced Micro Devices 功能描述:
AM29C10API 制造商:Rochester Electronics LLC 功能描述:- Bulk
AM29C10AWW DIE 制造商:Advanced Micro Devices 功能描述:
AM29C116-1JC 制造商:Rochester Electronics LLC 功能描述:- Bulk
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。

采購(gòu)需求

(若只采購(gòu)一條型號(hào)，填寫(xiě)一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。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(gòu)。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(gòu)

我的聯(lián)系方式

*
*
*