HN29W25611T Datasheet, PDF (36/42 Pages) Hitachi Semiconductor – 256M AND type Flash Memory More than 16,057-sector (271,299,072-bit)

HN29W25611T-50H
Function Description
Status Register: The HN29W25611T outputs the operation status data as follows: I/O7 pin outputs a V_OL to
indicate that the memory is in either erase or program operation. The level of I/O7 pin turns to a V_OH when
the operation finishes. I/O5 and I/O4 pins output V_OLs to indicate that the erase and program operations
complete in a finite time, respectively. If these pins output V_OHs, it indicates that these operations have timed
out. When these pins monitor, I/O7 pin must turn to a V_OH. To execute other erase and program operation,
the status data must be cleared after a time out occurs. From I/O0 to I/O3 pins are reserved for future use.
The pins output V_OLs and should be masked out during the status data read mode. The function of the status
register is summarized in the following table.
I/O
Flag definition
Definition
I/O7
Ready/Busy
V_OH = Ready, V_OL = Busy
I/O6
Reserved
Outputs a V_OL and should be masked out during the status data poling mode.
I/O5
Erase check
V_OH = Fail, V_OL = Pass
I/O4
Program check
V_OH = Fail, V_OL = Pass
I/O3
Reserved
Outputs a V_OL and should be masked out during the status data poling mode.
I/O2
Reserved
I/O1
Reserved
I/O0
Reserved
Requirement for System
Specifications
Item
Min
Typ
Usable sectors (initially)
16,057
—
Spare sectors
290
—
ECC (Error Correction Code)
3
—
Program/Erase endurance
—
—
Max
16,384
—
—
3 × 10⁵
Unit
sector
sector
bit/sector
cycle
36