s29jl064j Meet Spansion Inc., s29jl064j Datasheet - Page 14

• Manufacturer Part Number: s29jl064j
• Description: 64 Megabit 8m X 8-bit/4m X 16-bit Cmos 3.0 Volt-only, Simultaneous Read/write Flash Memory
• Manufacturer: Meet Spansion Inc.

8.
8.1
14
Device Bus Operations
Word/Byte Configuration
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 location.
The register is a latch used to store the commands, 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.
control levels they require, and the resulting output. The following subsections describe each of these
operations in further detail.
Legend
L = Logic Low = V
H = Logic High = V
V
V
X = Don’t Care
SA = Sector Address
A
D
D
Notes:
1. Addresses are A21:A0 in word mode (BYTE# = V
2. The sector protect and sector unprotect functions may also be implemented via programming equipment. See
3. If WP#/ACC = V
The BYTE# pin controls whether the device data I/O pins operate in the byte or word configuration. If the
BYTE# pin is set at logic ‘1’, the device is in word configuration, DQ15–DQ0 are active and controlled by CE#
and OE#.
If the BYTE# pin is set at logic ‘0’, the device is in byte configuration, and only data I/O pins DQ7–DQ0 are
active and controlled by CE# and OE#. The data I/O pins DQ14–DQ8 are tri-stated, and the DQ15 pin is used
as an input for the LSB (A-1) address function. Please note that the BYTE# pin must be connected to either
the system V
Read
Write
Standby
Output Disable
Reset
Sector Protect
Sector Unprotect
(Note 2)
Temporary Sector
Unprotect
ID
HH
IN
IN
OUT
Protection and Unprotection on page
whether they were last protected or unprotected using the method described in
on page
= 11.5–12.5V
= Address In
= Data In
= 9.0 ± 0.5V
= Data Out
Operation
22. If WP#/ACC = V
(Note 2)
CC
IL
IH
IL
or ground.
, sectors 0, 1, 140, and 141 remain protected. If WP#/ACC = V
V
0.3V
CE#
CC
X
X
L
L
L
L
L
±
HH
, all sectors will be unprotected.
OE#
H
H
H
H
L
X
X
X
Table 8.1 S29JL064J Device Bus Operations
22.
WE#
H
X
H
X
X
L
L
L
S29JL064J
IH
), A21:A-1 in byte mode (BYTE# = V
RESET#
V
0.3V
D a t a
V
V
V
CC
H
H
H
L
ID
ID
ID
±
Table 8.1
(Note 3)
(Note 3)
(Note 3)
WP#/
ACC
L/H
L/H
L/H
L/H
L/H
S h e e t
lists the device bus operations, the inputs and
A1 = H, A0 = L
A1 = H, A0 = L
SA, A6 = H,
Addresses
SA, A6 = L,
(Note 1)
Boot Sector/Sector Block Protection and Unprotection
IH
A
A
A
X
X
X
, protection on sectors 0, 1, 140, and 141 depends on
IN
IN
IN
IL
).
BYTE#
High-Z
High-Z
High-Z
= V
D
D
D
OUT
X
X
IN
IN
S29JL064J_00_03 April 7, 2011
IH
DQ15–DQ8
DQ14–DQ8 = High-Z,
BYTE# = V
DQ15 = A-1
Boot Sector/Sector Block
High-Z
High-Z
High-Z
High-Z
X
X
IL
High-Z
High-Z
High-Z
DQ7–
D
DQ0
D
D
D
D
OUT
IN
IN
IN
IN