L6402ML11RI Просмотр технического описания (PDF) - Advanced Micro Devices
Номер в каталоге
Компоненты Описание
производитель
L6402ML11RI
Advanced Micro Devices
L6402ML11RI Datasheet PDF : 57 Pages
| |||
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
itself does not occupy any addressable memory loca-
tion. The register is a latch used to store the com-
mands, along with the address and data information
needed to execute the command. The contents of the
register serve as inputs to the internal state machine.
The state machine outputs dictate the function of the
device. Table 1 lists the device bus operations, the in-
puts 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
DQ31–DQ16
Operation
Read
Write (Program/Erase)
Accelerated Program
Standby
Output Disable
Reset
CE# OE# WE# RESET# WP# ACC
L
L
H
H
X
X
L
H
L
H (Note 3) X
L
H
VCC ±
0.3 V
X
L
H
(Note 3) VHH
X
VCC ±
0.3 V
X
H
L
HH
H
X
X
X
X
X
L
X
X
Addresses
(Note 2)
AIN
AIN
AIN
DQ15– WORD#
DQ0
= VIH
WORD#
= VIL
DOUT
(Note 4)
(Note 4)
DOUT
(Note 4)
(Note 4)
DQ31–DQ16
= High-Z,
DQ31 &
DQ23= A-1
X
High-Z High-Z
High-Z
X
High-Z High-Z
High-Z
X
High-Z High-Z
High-Z
Sector Group Protect
(Note 2)
L
H
L
VID
Sector Group Unprotect
(Note 2)
L
H
L
VID
Temporary Sector Group
Unprotect
X
X
X
VID
SA, A6 =L,
H
X A3=L, A2=L, (Note 4) X
X
A1=H, A0=L
SA, A6=H,
H
X A3=L, A2=L, (Note 4) X
X
A1=H, A0=L
H
X
AIN
(Note 4) (Note 4) High-Z
Legend: L = Logic Low = VIL, H = Logic High = VIH, VID = 11.5–12.5 V, VHH = 11.5–12.5V, X = Don’t Care, SA = Sector Address,
AIN = Address In, DIN = Data In, DOUT = Data Out
Notes:
1. Addresses are A21:A0 in doubleword mode; A21:A-1 in word mode. Sector addresses are A21:A15 in both modes.
2. The sector protect and sector unprotect functions may also be implemented via programming equipment. See the “Sector Group
Protection and Unprotection” section.
3. If WP# = VIL, the first or last sector remains protected. If WP# = VIH, the first or last sector will be protected or unprotected as
determined by the method described in “Sector Group Protection and Unprotection”. All sectors are unprotected when shipped
from the factory (The SecSi Sector may be factory protected depending on version ordered.)
4. DIN or DOUT as required by command sequence, data polling, or sector protect algorithm (see Figure 2).
Word/Byte Configuration
The WORD# pin controls whether the device data I/O
pins operate in the word or doubleword configuration.
If the WORD# pin is set at VIH, the device is in double-
word configuration, DQ31–DQ0 are active and con-
trolled by CE# and OE#.
If the WORD# pin is set at VIL, the device is in word
configuration, and only data I/O pins DQ15–DQ0 are
active and controlled by CE# and OE#. The data I/O
pins DQ31–DQ16 are tri-stated, and the DQ23 and
DQ31 pins are used as inputs for the LSB (A-1) ad-
dress function.
VersatileIOTM (VIO) Control
The VersatileIOTM (VIO) control allows the host system
to set the voltage levels that the device generates and
tolerates on CE# and DQ I/Os to the same voltage
level that is asserted on VIO. See Ordering Information
for VIO options on this device.
January 23, 2006
Am29LV6402M
9
Share Link: