Document Number: 002-00948 Rev. *C
S29CD032J
S29CD016J
S29CL032J
S29CL016J
2. Input/Output Descriptions and Logic Symbols
Table identifies the input and output package connections provided on the device.
Symbol
Type
Description
A19-A0
Input
Address lines for S29CD-J and S29CL-J (A18-A0 for 16 Mb and A19-A0 for 32 Mb). A9 supports
12V autoselect input.
DQ31-DQ0
I/O
Data input/output
CE#
Input
Chip Enable. This signal is asynchronous relative to CLK for the burst mode.
OE#
Input
Output Enable. This signal is asynchronous relative to CLK for the burst mode.
WE#
Input
Write Enable
V
CC
Supply
Device Power Supply. This signal is asynchronous relative to CLK for the burst mode.
V
IO
Supply
VersatileI/O
TM
Input.
V
SS
Supply
Ground
NC
No Connect
Not connected internally
RY/BY#
Output
Ready/Busy output and open drain which require a external pull up resistor.
When RY/BY# = V
OH
, the device is ready to accept read operations and commands. When RY/BY#
= V
OL
, the device is either executing an embedded algorithm or the device is executing a hardware
reset operation.
CLK
Input
Clock Input that can be tied to the system or microprocessor clock and provides the fundamental
timing and internal operating frequency.
ADV#
Input
Load Burst Address input. Indicates that the valid address is present on the address inputs.
IND#
Output
End of burst indicator for finite bursts only. IND is low when the last word in the burst sequence is at
the data outputs.
WAIT#
Output
Provides data valid feedback only when the burst length is set to continuous.
WP#
Input
Write Protect Input. At V
IL
, disables program and erase functions in two outermost sectors of the
large bank.
ACC
Input
Acceleration input. At V
HH
, accelerates erasing and programming. When not used for acceleration,
ACC = V
SS
or V
CC
.
RESET#
Input
Hardware Reset.