參數(shù)資料
型號(hào)： S29CD032G0PFAN010
廠商： SPANSION LLC
元件分類： DRAM
英文描述： CMOS 2.5 VOLT ONLY BURST MODE DUAL BOOT, SIMULTANEOUS READ /WRITE FLASH MEMORY
中文描述： 1M X 32 FLASH 2.7V PROM, 54 ns, PBGA80
封裝： 13 X 11 MM, 1 MM PITCH, FORTIFIED, BGA-80
文件頁數(shù)： 49/93頁
文件大?。?/td> 1608K
代理商： S29CD032G0PFAN010
March 22, 2004 30606B0
S29CD032G
49
A d v a n c e I n f o r m a t i o n
cycle contains the program address and data. Additional data is programmed in
the same manner. This mode dispenses with the initial two unlock cycles required
in the standard program command sequence, resulting in faster total program-
ming time. Tables 18 and 20 show the requirements for the command sequence.
During the unlock bypass mode, only the Unlock Bypass Program and Unlock By-
pass Reset commands are valid. To exit the unlock bypass mode, the system
must issue the two-cycle unlock bypass reset command sequence. The first cycle
must contain the data 90h; the second cycle the data 00h. Addresses are don’t
care for both cycles. The device then returns to reading array data.
Figure 4 illustrates the algorithm for the program operation. See the
Erase/Pro-
gram Operations
table in
AC Characteristics
for parameters, and to Figures 21
and 22 for timing diagrams.
Unlock Bypass Entry Command
The Unlock Bypass command, once issued, is used to bypass the “unlock” se-
quence for program, chip erase, and CFI commands. This feature permits slow
PROM programmers to significantly improve programming/erase throughput
since the command sequence often requires microseconds to execute a single
write operation. Therefore, once the Unlock Bypass command is issued, only the
two-cycle program and erase bypass commands are required. The Unlock Bypass
Command is ignored if the SecSi sector is enabled. To return back to normal op-
eration, the Unlock Bypass Reset Command must be issued.
START
Write Program
Command Sequence
Data Poll
from System
Verify Data
No
Yes
Last Address
No
Yes
Programming
Completed
Increment Address
Embedded
Program
algorithm
in progress
Note:
See Tables 19 and 20 for program command sequence.
Figure 4. Program Operation
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