TH50VSF3582AASB TOSHIBA [Toshiba Semiconductor], TH50VSF3582AASB Datasheet - Page 29

• Manufacturer Part Number: TH50VSF3582AASB
• Description: TOSHIBA MULTI-CHIP INTEGRATED CIRCUIT SILICON GATE CMOS
• Manufacturer: TOSHIBA [Toshiba Semiconductor]

HARDWARE SEQUENCE FLAGS FOR FLASH MEMORY
during an auto mode operation. The output data is read out using the same timing as that used when CEF = OE
= V
Hardware Sequence flag is read to determine the device status and the result of the operation is verified by
comparing the read-out data with the original data.
The TH50VSF3582/3583AASB has a Hardware Sequence flag which allows the device status to be determined
The device re-enters Read Mode automatically after an auto mode operation has been completed successfully. The
IL
DQ7 (
function. DATA polling begins on the rising edge of WE in the last bus cycle. In an Auto-Program operation,
DQ7 outputs inverted data during the programming operation and outputs actual data after programming has
finished. In an auto-erase operation, DQ7 outputs 0 during the erase operation and 1 when the erase operation
has finished. If an auto mode operation fails, DQ7 simply outputs the data.
signal.
DQ6 (Toggle bit 1)
operation. The Toggle bit begins toggling on the rising edge of WE in the last bus cycle. DQ6 alternately
outputs a 0 or a 1 for each attempt ( OE access) while CEF = V
operation has been completed, toggling stops and valid memory cell data can be read by subsequent reading. If
the operation failed, the DQ6 output toggles.
block. It then stops toggling. DQ6 toggles for around 100 µs when an attempt is made to execute an Auto Erase
operation on a protected block. It then stops toggling. After toggling stops the device returns to Read mode.
DQ5 (internal time-out)
that the operation has not completed within the allotted time.
Either a hardware reset or a software reset command is required to put the device into Read mode.
During an Auto-Program or auto-erase operation, the device status can be determined using the data polling
When the operation has finished, the address latch is reset. Data polling is asynchronous with the OE
The device status can be determined by the Toggle Bit function during an Auto Program or Auto Erase
DQ6 toggles for around 3 µs when an attempt is made to execute an Auto Program operation on a protected
DQ5 outputs a 1 when the Internal Timer has timed out during a Program or Erase operation. This indicates
An attempt to program 1 into a cell containing 0 will fail (see Auto Program mode). DQ5 outputs 1 in this case.
in Read Mode. The
DATA
polling)
RY
/
BY
output can be either High or Low.
IL
while the device is busy. When the internal
TH50VSF3582/3583AASB
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