S29CD016G SPANSION, S29CD016G Datasheet - Page 14

• Manufacturer Part Number: S29CD016G
• Description: 16 Megabit (512 K x 32-Bit) CMOS 2.5 Volt-only Burst Mode / Dual Boot / Simultaneous Read/Write Flash Memory
• Manufacturer: SPANSION

Device Bus Operations
Legend:
L = Logic Low = V
Notes:
1. WP# controls the two outermost sectors of the top boot block or the two outermost sectors of the bottom boot block.
2. DQ0 reflects the sector PPB (or sector group PPB) and DQ1 reflects the DYB.
14
Operation
Read
Asynchronous Write
Synchronous Write
Standby (CE#)
Output Disable
Reset
PPB Protection Status (Note 2)
Burst Read Operations
Load Starting Burst Address
Advance Burst to next address
with appropriate Data
presented on the Data bus
Terminate Current Burst Read
Cycle
Terminate Current Burst Read
Cycle with RESET#
Terminate Current Burst Read
Cycle; Start New Burst Read
Cycle
VersatileI/O™ (V
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 com-
posed of latches that 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.
trol levels they require, and the resulting output. The following subsections
describe each of these operations in further detail.
IL
The VersatileI/O (V
the device generates at its data outputs and the voltages tolerated at its data in-
puts to the same voltage level that is asserted on the V
, H = Logic High = V
IO
) Control
CE#
H
X
H
X
L
L
L
L
L
L
L
L
IO
IH
) control allows the host system to set the voltage levels that
, X = Don’t care.
Table 1
OE#
Table 1. Device Bus Operation
H
H
X
H
X
X
X
X
H
L
L
L
A d v a n c e
lists the device bus operations, the inputs and con-
WE#
H
H
H
H
H
H
H
H
L
L
X
X
S29CD016G
RESET#
H
H
H
H
H
H
H
H
H
H
L
L
I n f o r m a t i o n
CLK
X
X
X
X
X
X
X
IO
ADV#
pin.
X
X
X
X
X
X
H
X
X
Sector Address,
A7 – A0 = 02h
Addresses
A9 = V
HIGH Z
A
A
A
A
A
X
X
X
X
X
IN
IN
IN
IN
IN
S29CD016_00_A4 November 5, 2004
ID
,
Burst Data Out
(DQ0–DQ31)
00000001h,
(protected)
00000000h
(unprotect)
HIGH Z
HIGH Z
HIGH Z
HIGH Z
HIGH Z
A6 = H
A6 = L
Data
D
D
D
OUT
X
X
IN
IN