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参数资料
| 型号： | S29XS064R0PBHW010 |
| 厂商： | SPANSION LLC |
| 元件分类： | PROM |
| 英文描述： | 4M X 16 FLASH 1.8V PROM, 80 ns, PBGA44 |
| 封装： | 7.50 X 5 MM, LEAD FREE, FBGA-44 |
| 文件页数： | 31/65页 |
| 文件大小： | 2116K |
| 代理商： | S29XS064R0PBHW010 |
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July 22, 2011 S29VS_XS064R_00_06
S29VS/XS-R MirrorBit
Flash Family
37
Da ta
Sh e e t
(Adv a n ce
In f o r m ation)
12.4
Program Command Sequence
Programming is a four-bus-cycle operation. The program command sequence is initiated by writing two
unlock write cycles, followed by the program set-up 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 provides internally generated program pulses and verifies the
programmed cell margin. Table 12.3 on page 43 shows the address and data requirements for the program
command sequence.
When the Embedded Program algorithm is complete, that bank then returns to the read mode and addresses
are no longer latched. The system can determine the status of the program operation by monitoring DQ7 or
DQ6/DQ2. Refer to Write Operation Status on page 45 for information on these status bits.
Any commands written to the device during the Embedded Program Algorithm are ignored. Note that a
hardware reset immediately terminates the program operation. The program command sequence should be
reinitiated once that bank has returned to the read mode, to ensure data integrity.
Programming is allowed in any sequence and across sector boundaries. A bit cannot be programmed from
“0” back to a “1.” Attempting to do so may causes that bank to set DQ5 = 1 (change-up condition). However,
a succeeding read will show that the data is still “0.” Only erase operations can convert a “0” to a “1.”
12.5
Accelerated Program
The device offers accelerated program operations through the VPP input. The device uses the higher voltage
on the VPP input to accelerate the operation.
Figure 12.1 illustrates the algorithm for the program operation. Refer to the Erase/Program Operations table
in AC Characteristics for parameters, and Figure 19.6, on page 59 for timing diagrams.
Figure 12.1 Program Operation
Note
1. See Table 12.3 on page 43 for program command sequence.
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
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