Motore di ricerca datesheet componenti elettronici
  Italian  ▼
ALLDATASHEETIT.COM

X  

AM29BDS643D Scheda tecnica(PDF) 9 Page - Advanced Micro Devices

Il numero della parte AM29BDS643D
Spiegazioni elettronici  64 Megabit (4 M x 16-Bit) CMOS 1.8 Volt-only Simultaneous Read/Write, Burst Mode Flash Memory
Download  46 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Produttore elettronici  AMD [Advanced Micro Devices]
Homepage  http://www.amd.com
Logo AMD - Advanced Micro Devices

AM29BDS643D Scheda tecnica(HTML) 9 Page - Advanced Micro Devices

Back Button AM29BDS643D Datasheet HTML 5Page - Advanced Micro Devices AM29BDS643D Datasheet HTML 6Page - Advanced Micro Devices AM29BDS643D Datasheet HTML 7Page - Advanced Micro Devices AM29BDS643D Datasheet HTML 8Page - Advanced Micro Devices AM29BDS643D Datasheet HTML 9Page - Advanced Micro Devices AM29BDS643D Datasheet HTML 10Page - Advanced Micro Devices AM29BDS643D Datasheet HTML 11Page - Advanced Micro Devices AM29BDS643D Datasheet HTML 12Page - Advanced Micro Devices AM29BDS643D Datasheet HTML 13Page - Advanced Micro Devices Next Button
Zoom Inzoom in Zoom Outzoom out
 9 / 46 page
background image
Am29BDS643D
9
PRELI M INARY
DEVICE BUS OPERATIONS
This section describes the requirements and use of the
device bus operations, which are initiated through the
internal command register. The command register it-
self does not occupy any addressable memory loca-
tion. The register is composed of latches that store the
commands, along with the address and data informa-
tion needed to execute the command. The contents of
the register serve as inputs to the internal state ma-
chine. The state machine outputs dictate the function of
the device. Table 1 lists the device bus operations, the
inputs and control levels they require, and the resulting
output. The following subsections describe each of
these operations in further detail.
Table 1.
Device Bus Operations
Legend: L = Logic 0, H = Logic 1, X = Don’t Care.
Requirements for Asynchronous
Read Operation (Non-Burst)
To read data from the memory array, the system must
first assert a valid address on A/DQ0–A/DQ15 and
A16–A21, while driving AVD# and CE# to VIL. WE#
should remain at VIH. Note that CLK must remain low
for asynchronous read operations. The rising edge of
AVD# latches the address, after which the system can
d r iv e OE# t o V IL . T h e da ta will appe ar on
A/DQ0–A/DQ15. Since the memory array is divided
into two banks, each bank remains enabled for read
access until the command register contents are
altered.
Address access time (tACC) is equal to the delay from
stable addresses to valid output data. The chip enable
access time (tCE) is the delay from the stable
addresses and stable CE# to valid data at the outputs.
The output enable access time (tOE) is the delay from
the falling edge of OE# to valid data at the output.
The internal state machine is set for reading array data
upon device power-up, or after a hardware reset. This
ensures that no spurious alteration of the memory
content occurs during the power transition.
Requirements for Synchronous (Burst)
Read Operation
The device is capable of continuous, sequential (linear)
burst operation. However, when the device first powers
up, it is enabled for asynchronous read operation. The
device will automatically be enabled for burst mode on
the first rising edge on the CLK input, while AVD# is
held low for one clock cycle. Prior to activating the clock
signal, the system should determine how many wait
states are desired for the initial word (tIACC) of each
burst session. The system would then write the Set
Wait Count command sequence (see “Programmable
Wait State”). The system may optionally activate the
PS mode (see “Power Saving Function”) by writing the
Enable PS Mode command sequence at this time, but
note that the PS mode can only be disabled by a hard-
ware reset. (See “Command Definitions” for further
details).
The initial word is output tIACC after the rising edge of
the first CLK cycle. Subsequent words are output tBACC
Operation
CE#
OE#
WE#
A16–21 A/DQ0–15 RESET#
CLK
AVD#
Asynchronous Read
L
L
H
Addr In
I/O
H
L
Write
L
H
L
Addr In
I/O
H
L
Standby (CE#)
H
X
X
HIGH Z
HIGH Z
H
X
X
Hardware Reset
X
X
X
HIGH Z
HIGH Z
L
X
X
Burst Read Operations
Load Starting Burst Address
L
H
H
Addr In
Addr In
H
Advance Burst to next address with appropriate
Data presented on the Data Bus
LLH
HIGH Z
Burst
Data Out
HH
Terminate current Burst read cycle
H
X
H
HIGH Z
HIGH Z
H
X
Terminate current Burst read cycle via RESET#
X
X
H
HIGH Z
HIGH Z
L
X
X
Terminate current Burst read cycle and start
new Burst read cycle
L
H
H
HIGH Z
I/O
H


Codice articolo simile - AM29BDS643D

Produttore elettroniciIl numero della parteScheda tecnicaSpiegazioni elettronici
logo
SPANSION
AM29BDS643G SPANSION-AM29BDS643G Datasheet
714Kb / 49P
   64 Megabit (4 M x 16-Bit) CMOS 1.8 Volt-only Simultaneous Read/Write, Burst Mode Flash Memory
logo
Advanced Micro Devices
AM29BDS643G AMD-AM29BDS643G Datasheet
714Kb / 49P
   64 Megabit (4 M x 16-Bit) CMOS 1.8 Volt-only Simultaneous Read/Write, Burst Mode Flash Memory
logo
SPANSION
AM29BDS643GT5GVAI SPANSION-AM29BDS643GT5GVAI Datasheet
714Kb / 49P
   64 Megabit (4 M x 16-Bit) CMOS 1.8 Volt-only Simultaneous Read/Write, Burst Mode Flash Memory
logo
Advanced Micro Devices
AM29BDS643GT5GVAI AMD-AM29BDS643GT5GVAI Datasheet
714Kb / 49P
   64 Megabit (4 M x 16-Bit) CMOS 1.8 Volt-only Simultaneous Read/Write, Burst Mode Flash Memory
logo
SPANSION
AM29BDS643GT5KVAI SPANSION-AM29BDS643GT5KVAI Datasheet
714Kb / 49P
   64 Megabit (4 M x 16-Bit) CMOS 1.8 Volt-only Simultaneous Read/Write, Burst Mode Flash Memory
More results

Descrizione simile - AM29BDS643D

Produttore elettroniciIl numero della parteScheda tecnicaSpiegazioni elettronici
logo
SPANSION
AM29BDS640G SPANSION-AM29BDS640G Datasheet
899Kb / 65P
   64 Megabit (4 M x 16-Bit) CMOS 1.8 Volt-only Simultaneous Read/Write, Burst Mode Flash Memory
logo
Advanced Micro Devices
AM29BDS643G AMD-AM29BDS643G Datasheet
714Kb / 49P
   64 Megabit (4 M x 16-Bit) CMOS 1.8 Volt-only Simultaneous Read/Write, Burst Mode Flash Memory
logo
SPANSION
AM29BDS643G SPANSION-AM29BDS643G Datasheet
714Kb / 49P
   64 Megabit (4 M x 16-Bit) CMOS 1.8 Volt-only Simultaneous Read/Write, Burst Mode Flash Memory
logo
Advanced Micro Devices
AM29BDS640G AMD-AM29BDS640G Datasheet
1Mb / 77P
   64 Megabit (4 M x 16-Bit), 1.8 Volt-only Simultaneous Read/Write, Burst Mode Flash Memory
logo
SPANSION
S29WS128J SPANSION-S29WS128J Datasheet
1Mb / 98P
   128/64 Megabit (8/4 M x 16-Bit) CMOS 1.8 Volt-only Simultaneous Read/Write, Burst Mode Flash Memory
S29WS-J SPANSION-S29WS-J Datasheet
2Mb / 97P
   128/64 Megabit (8/4 M x 16-Bit) CMOS 1.8 Volt-only Simultaneous Read/Write, Burst Mode Flash Memory
logo
Advanced Micro Devices
AM29BDS323D AMD-AM29BDS323D Datasheet
746Kb / 44P
   32 Megabit (2 M x 16-Bit) CMOS 1.8 Volt-only Simultaneous Read/Write, Burst Mode Flash Memory
logo
SPANSION
S29WSXXXN SPANSION-S29WSXXXN Datasheet
1Mb / 95P
   256/128/64 Megabit (16/8/4 M x 16-Bit) CMOS 1.8 Volt-only Simultaneous Read/Write, Burst Mode Flash Memory
logo
Advanced Micro Devices
AM29N323D AMD-AM29N323D Datasheet
824Kb / 48P
   32 Megabit (2 M x 16-Bit) CMOS 1.8 Volt-only Simultaneous Read/Write, Burst Mode Flash Memory
logo
SPANSION
AM29BDS320G SPANSION-AM29BDS320G Datasheet
1Mb / 74P
   32 Megabit (2 M x 16-Bit), 1.8 Volt-only Simultaneous Read/Write, Burst Mode Flash Memory
More results


Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46


Scheda tecnica Scarica

Go To PDF Page


Link URL




Privacy Policy
ALLDATASHEETIT.COM
Lei ha avuto il aiuto da alldatasheet?  [ DONATE ] 

Di alldatasheet   |   Richest di pubblicita   |   contatti   |   Privacy Policy   |   scambio Link   |   Ricerca produttore
All Rights Reserved©Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn
Indian : Alldatasheet.in  |   Mexican : Alldatasheet.com.mx  |   British : Alldatasheet.co.uk  |   New Zealand : Alldatasheet.co.nz
Family Site : ic2ic.com  |   icmetro.com