參數(shù)資料
型號: AM42DL1632DB30IT
廠商: Advanced Micro Devices, Inc.
英文描述: Am29DL16xD 16 Megabit (2 M x 8-Bit/1 M x 16-Bit) CMOS 3.0 Volt-only, Simultaneous Operation Flash Memory and 2 Mbit (128 K x 16-Bit) Static RAM
中文描述: Am29DL16xD 16兆位(2米× 8位/ 1個(gè)M x 16位),3.0伏的CMOS只,同時(shí)作業(yè)快閃記憶體和2兆位(128畝× 16位),靜態(tài)存儲(chǔ)器
文件頁數(shù): 86/128頁
文件大?。?/td> 650K
代理商: AM42DL1632DB30IT
February 6, 2004
Am42DL16x2D
21
Write Pulse “Glitch” Protection
Noise pulses of less than 5 ns (typical) on OE#, CE#f
or WE# do not initiate a write cycle.
Logical Inhibit
Write cycles are inhibited by holding any one of OE# =
V
IL
, CE#f = V
IH
or WE# = V
IH
. To initiate a write cycle,
CE#f and WE# must be a logical zero while OE# is a
logical one.
Power-Up Write Inhibit
If WE# = CE#f = V
IL
and OE# = V
IH
during power up,
the device does not accept commands on the rising
edge of WE#. The internal state machine is automati-
cally reset to reading array data on power-up.
COMMON FLASH MEMORY INTERFACE
(CFI)
The Common Flash Interface (CFI) specification out-
lines device and host system software interrogation
handshake, which allows specific vendor-specified
software algorithms to be used for entire families of
devices. Software support can then be device-inde-
pendent, JEDEC ID-independent, and forward- and
backward-compatible for the specified flash device
families. Flash vendors can standardize their existing
interfaces for long-term compatibility.
This device enters the CFI Query mode when the sys-
tem writes the CFI Query command, 98h, to address
55h in word mode (or address AAh in byte mode), any
time the device is ready to read array data. The sys-
tem can read CFI information at the addresses given
in Tables 10–13. To terminate reading CFI data, the
system must write the reset command. The CFI Query
mode is not accessible when the device is executing
an Embedded Program or embedded erase algorithm.
The system can also write the CFI query command
when the device is in the autoselect mode. The device
enters the CFI query mode, and the system can read
CFI data at the addresses given in Tables 10–13. The
system must write the reset command to return the
device to the autoselect mode.
For further information, please refer to the CFI Specifi-
cation and CFI Publication 100, available via the World
Wide Web at http://www.amd.com/products/nvd/over-
view/cfi.html. Alternatively, contact an AMD
representative for copies of these documents.
Table 10.
CFI Query Identification String
Addresses
(Word Mode)
Data
Description
10h
11h
12h
0051h
0052h
0059h
Query Unique ASCII string “QRY”
13h
14h
0002h
0000h
Primary OEM Command Set
15h
16h
0040h
0000h
Address for Primary Extended Table
17h
18h
0000h
0000h
Alternate OEM Command Set (00h = none exists)
19h
1Ah
0000h
0000h
Address for Alternate OEM Extended Table (00h = none exists)
相關(guān)PDF資料
PDF描述
AM42DL1632DT85IS Am29DL16xD 16 Megabit (2 M x 8-Bit/1 M x 16-Bit) CMOS 3.0 Volt-only, Simultaneous Operation Flash Memory and 2 Mbit (128 K x 16-Bit) Static RAM
AM42DL1632DT85IT Am29DL16xD 16 Megabit (2 M x 8-Bit/1 M x 16-Bit) CMOS 3.0 Volt-only, Simultaneous Operation Flash Memory and 2 Mbit (128 K x 16-Bit) Static RAM
AM42DL1642DB30IS Am29DL16xD 16 Megabit (2 M x 8-Bit/1 M x 16-Bit) CMOS 3.0 Volt-only, Simultaneous Operation Flash Memory and 2 Mbit (128 K x 16-Bit) Static RAM
AM42DL1642DB30IT Am29DL16xD 16 Megabit (2 M x 8-Bit/1 M x 16-Bit) CMOS 3.0 Volt-only, Simultaneous Operation Flash Memory and 2 Mbit (128 K x 16-Bit) Static RAM
AM42DL1642DB35IS Am29DL16xD 16 Megabit (2 M x 8-Bit/1 M x 16-Bit) CMOS 3.0 Volt-only, Simultaneous Operation Flash Memory and 2 Mbit (128 K x 16-Bit) Static RAM
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