S29CD-J_12 SPANSION [SPANSION], S29CD-J_12 Datasheet - Page 32
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S29CD-J_12
Manufacturer Part Number
S29CD-J_12
Description
Manufacturer
SPANSION [SPANSION]
Datasheet
1.S29CD-J_12.pdf
(81 pages)
- Current page: 32 of 81
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32
8.7.1
Programming
Programming is a four-bus-cycle operation. The program command sequence is initiated by writing two
unlock write cycles, followed by the program setup command. The program address and data are written
next, which in turn initiate the Embedded Program algorithm. The system is not required to provide further
controls or timings. The device automatically generates the program pulses and verifies the programmed cell
margin.
command sequence.
Note the following:
When the Embedded Program algorithm is complete, the device returns to the read mode and address are
The system can determine the status of the program operation by using DQ7, DQ6 or RY/BY#. Refer to
A “0” cannot be programmed back to a “1.” Attempting to do so may halt the operation and set DQ5 to 1, or
Any commands written to the device during the Embedded Program Algorithm are ignored except the
A hardware reset immediately terminates the program operation; the program command sequence should
For the 32Mb S29CD-J and S29CL-J devices only:
Note
See
no longer latched. An address change is required to begin reading valid array data.
Write Operation Status on page 36
cause the Data# Polling algorithm to indicate the operation was successful. A succeeding read shows that
the data is still “0.” Only erase operations can convert a “0” to a “1.”
Program Suspend command.
be re-initiated once the device has returned to the read mode, to ensure data integrity.
Please refer to the application note “Recommended Mode of Operation for Spansion
S29CD032J/S29CL032J Flash Memory” publication number S29CD-CL032J_Recommend_AN for
programming best practices.
Table 19.1
Command Definitions on page 75
and
Table 20.2
Increment Address
for program command sequence.
S29CD-J and S29CL-J Flash Family
in progress
Embedded
for information on these status bits.
Figure 8.5 Program Operation
algorithm
Program
shows the address and data requirements for the program
D a t a
No
Command Sequence
S h e e t
Write Program
Last Address?
Programming
from System
Verify Data?
Completed
Data Poll
START
Yes
Yes
S29CD-J_CL-J_00_B7 October 11, 2012
No
®
110 nm
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