參數(shù)資料
型號(hào)： S29CD032G0RFFN003
廠(chǎng)商： SPANSION LLC
元件分類(lèi)： PROM
英文描述： 1M X 32 FLASH 2.7V PROM, 48 ns, PBGA80
封裝： 13 X 11 MM, 1 MM PITCH, LEAD FREE, FORTIFIED, BGA-80
文件頁(yè)數(shù)： 43/81頁(yè)
文件大?。?/td> 1276K
代理商： S29CD032G0RFFN003
46
S29CD-G Flash Family
S29CD-G_00_B1 March 3, 2009
Data
Sheet
(Pre limin ar y)
Figure 15.2 Erase Operation
Notes
1. See Table 15.2 on page 52 and Table 15.3 on page 53 for erase command sequence.
2. See DQ3: Sector Erase Timer on page 58 for more information.
Erase Suspend mode, the Reset command is not required for read operations and is ignored) or program
operations in sectors not being erased. Any other command written during the Erase Suspend mode is
ignored, except for the Sector Erase and Program Resume command. Writing the Erase and Program
Resume command resumes the sector erase operation. The bank address of the erase suspended bank is
required when writing this command
If the Sector Erase and Program Suspend command is written during a programming operation, the device
suspends programming operations and allows only read operations in sectors not selected for programming.
Further nesting of either erase or programming operations is not permitted. Table 15.1 summarizes
permissible operations during Erase and Program Suspend. (A busy sector is one that is selected for
programming or erasure.):
When the Sector Erase and Program Suspend command is written during a Sector Erase operation, the chip
takes between 0.1 s and 20 s to actually suspend the operation and go into the erase suspended read
mode (pseudo-read mode), at which time the user can read or program from a sector that is not erase
suspended. Reading data in this mode is the same as reading from the standard read mode, except that the
data must be read from sectors that were not erase suspended.
Polling DQ6 on two immediately consecutive reads from a given address provides the system with the ability
to determine if the device is in Erase or Program Suspend. Before the device enters Erase or Program
Suspend, the DQ6 pin toggles between two immediately consecutive reads from the same address. After the
device enters Erase suspend, DQ6 stops toggling between two immediately consecutive reads to the same
address. During the Sector Erase operation and also in Erase suspend mode, two immediately consecutive
readings from the erase-suspended sector causes DQ2 to toggle. DQ2 does not toggle if reading from a non-
busy (non-erasing) sector (stored data is read). No bits are toggled during program suspend mode. Software
must keep track of the fact that the device is in a suspended mode.
After entering the erase-suspend-read mode, the system may read or program within any non-suspended
sector:
Table 15.1 Allowed Operations During Erase/Program Suspend
Sector
Program Suspend
Erase Suspend
Busy Sector
Program Resume
Erase Resume
Non-busy sectors
Read Only
Read or Program
START
Write Erase
Command Sequence
Data Poll
from System
Data = FFh?
No
Yes
Erasure Completed
Embedded
Erase
algorithm
in progress
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