HN29W25611T Datasheet, PDF (6/42 Pages) Hitachi Semiconductor – 256M AND type Flash Memory More than 16,057-sector (271,299,072-bit)

HN29W25611T-50H
Pin Function
CE: CE is used to select the device. The status returns to the standby at the rising edge of CE in the reading
operation. However, the status does not return to the standby at the rising edge of CE in the busy state in
programming and erase operation.
OE: Memory data and status register data can be read, when OE is V_IL.
WE: Commands and address are latched at the rising edge of WE.
SC: Programming and reading data is latched at the rising edge of SC.
RES: RES pin must be kept at the V_ILR (V_SS ± 0.2 V) level when V_CC is turned on and off. In this way, data
in the memory is protected against unintentional erase and programming. RES must be kept at the V_IHR (V_CC
± 0.2 V) level during any operations such as programming, erase and read.
CDE: Commands and data are latched when CDE is V_IL and address is latched when CDE is V_IH.
RDY/Busy: The RDY/Busy indicates the program/erase status of the flash memory. The RDY/Busy signal
is initially at a high impedance state. It turns to a V_OL level after the (40H) command in programming
operation or the (B0H) command in erase operation. After the erase or programming operation finishes, the
RDY/Busy signal turns back to the high impedance state.
I/O0 to I/O7: The I/O pins are used to input data, address and command, and are used to output memory data
and status register data.
Mode Selection
Mode
CE OE WE SC RES CDE RDY/Busy*³ I/O0 to I/O7
Deep standby
×*⁴ ×
×
×
V_ILR ×
V_OH
High-Z
Standby
V_IH
×
×
×
V_IHR ×
V_OH
High-Z
Output disable
V_IL
V_IH
V_IH
×
V_IHR ×
V_OH
High-Z
Status register read*¹
V_IL
V_IL
V_IH
×
V_IHR ×
V_OH
Status register outputs
Command write*²
V_IL
V_IH
V_IL
V_IL
V_IHR V_IL
V_OH
Din
Notes: 1. Default mode after the power on is the status register read mode (refer to status transition). From
I/O0 to I/O7 pins output the status, when CE = V_IL and OE = V_IL (conventional read operation
condition).
2. Refer to the command definition. Data can be read, programmed and erased after commands are
written in this mode.
3. The RDY/Busy bus should be pulled up to V_CC to maintain the V_OH level while the RDY/Busy pin
outputs a high impedance.
4. An × means “Don’t care”. The pin level can be set to either V_IL or V_IH referred to DC characteristics.
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