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参数资料
| 型号： | S29CD032G0RFFN003 |
| 厂商： | SPANSION LLC |
| 元件分类： | PROM |
| 英文描述： | 1M X 32 FLASH 2.7V PROM, 48 ns, PBGA80 |
| 封装： | 13 X 11 MM, 1 MM PITCH, LEAD FREE, FORTIFIED, BGA-80 |
| 文件页数： | 48/81页 |
| 文件大小： | 1276K |
| 代理商： | S29CD032G0RFFN003 |
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50
S29CD-G Flash Family
S29CD-G_00_B1 March 3, 2009
Data
Sheet
(Pre limin ar y)
The host system must determine whether a PPB is fully programmed by noting the status of DQ0 in the sixth
cycle of the PPB Program command. If DQ0 = 0, the entire six-cycle PPB Program command sequence must
be reissued until DQ0 = 1.
15.24 All PPB Erase Command
The All PPB Erase command is used to erase all PPBs in bulk. There is no means for individually erasing a
specific PPB. Unlike the PPB program, no specific sector address is required. However, when the PPB erase
command is written (60h) and A6 = 1, all Sector PPBs are erased in parallel. If the PPB Lock Bit is set the
ALL PPB Erase command does not execute and the command times-out without erasing the PPBs. The host
system must determine whether all PPB was fully erased by noting the status of DQ0 in the sixth cycle of the
All PPB Erase command. If DQ0 = 1, the entire six-cycle All PPB Erase command sequence must be
reissued until DQ0 = 1.
It is the responsibility of the user to preprogram all PPBs prior to issuing the All PPB Erase command. If the
user attempts to erase a cleared PPB, over-erasure may occur making it difficult to program the PPB at a
later time. Also note that the total number of PPB program/erase cycles is limited to 100 cycles. Cycling the
PPBs beyond 100 cycles is not guaranteed.
The All PPB Erase command is permitted if the Secured Silicon sector is enabled.
15.25 DYB Write
The DYB Write command is used for setting the DYB, which is a volatile bit that is cleared at reset. There is
one DYB per sector. If the PPB is set, the sector is protected regardless of the value of the DYB. If the PPB is
cleared, setting the DYB to a 1 protects the sector from programs or erases. Since this is a volatile bit,
removing power or resetting the device clears the DYBs. The bank address is latched when the command is
written.
The DYB Write command is permitted if the Secured Silicon sector is enabled.
15.26 PPB Lock Bit Set
The PPB Lock Bit set command is used for setting the DYB, which is a volatile bit that is cleared at reset.
There is one DYB per sector. If the PPB is set, the sector is protected regardless of the value of the DYB. If
the PPB is cleared, setting the DYB to a 1 protects the sector from programs or erases. Since this is a volatile
bit, removing power or resetting the device clears the DYBs. The bank address is latched when the command
is written.
The PPB Lock command is permitted if the Secured Silicon sector is enabled.
15.27 DYB Status
The programming of the DYB for a given sector can be verified by writing a DYB status verify command to the
device.
15.28 PPB Status
The programming of the PPB for a given sector can be verified by writing a PPB status verify command to the
device.
15.29 PPB Lock Bit Status
The programming of the PPB Lock Bit for a given sector can be verified by writing a PPB Lock Bit status verify
command to the device.
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