TC58FVM5T2ATG65 Toshiba, TC58FVM5T2ATG65 Datasheet - Page 13

• Manufacturer Part Number: TC58FVM5T2ATG65
• Manufacturer: Toshiba

Specifications of TC58FVM5T2ATG65

• Cell Type: NOR
• Density: 32Mb
• Access Time (max): 65ns
• Interface Type: Parallel
• Boot Type: Top
• Address Bus: 22/21Bit
• Operating Supply Voltage (typ): 2.5/3/3.3V
• Operating Temp Range: -40C to 85C
• Package Type: TSOP-I
• Program/erase Volt (typ): 8.5 to 9.5V
• Sync/async: Asynchronous
• Operating Temperature Classification: Industrial
• Operating Supply Voltage (min): 2.3V
• Operating Supply Voltage (max): 3.6V
• Word Size: 8/16Bit
• Number Of Words: 4M/2M
• Supply Current: 55mA
• Mounting: Surface Mount
• Pin Count: 48
• Lead Free Status / Rohs Status: Compliant

BLOCK PROTECTION
out in two ways: by supplying a high voltage (V
voltage and a command sequence (see Block protection 2).
(1) Block protection 1
(2) Block protection 2
Temporary Block Unprotection
protection for all protected blocks. Unprotection is enabled by applying V
Erase operations can be performed on all blocks except the boot blocks which have been protected by the Boot
Block Protect operation. The device returns to its previous state when V
That is, previously protected blocks will be protected again.
Verify Block Protect
Verification is performed either by inputting the Verify Block Protect command or by applying V
The Verify Block Protect command, which can be performed simultaneously with operations in another bank, is
performed by setting the block address with A0 = A6 = V
If the block is unprotected, 00h is output.
Inputting a Reset command releases this mode and returns the device to Read Mode. When verifying block
protect across a bank boundary, a Reset command is needed at the time of the change of a bank.
Boot Block Protection
protection. Neither V
on
bottom boot blocks are BA0 and BA1. Inputting V
necessary to protect these blocks, the ordinary Block Protection Mode must be used.
Block Protection is a function for disabling writing and erasing specific blocks. Block protection can be carried
The TC58FVM5T2A/B2A/T3A/B3A has a temporary block unprotection feature which disables block
The Verify Block Protect command is used to ascertain whether a block is protected or unprotected.
Inputting the verify block protect command sequence sets the specified bank to the Verify Block Protect mode.
Boot block protection temporarily protects certain boot blocks using a method different from ordinary block
WP
= A0 = A6 = V
protection circuit. Block protection can be verified using the Verify Block Protect command. Inputting V
on OE sets the device to Verify Mode. 01h is output if the block is protected and 00h is output if the block
is unprotected. If block protection was unsuccessful, the operation must be repeated. Releasing V
and OE terminates this mode.
first cycle of the command sequence is the Set-up command. In the second cycle, the Block Protect command
is input, in which a block address and A1 = V
block protection circuit. There is a wait of t
necessary during this time. In the third cycle the Verify Block Protect command is input. This command
verifies the write to the block protection circuit. Read is performed in the fourth cycle. If the protection
operation is complete, 01h is output. If a value other than 01h is output, block protection is not complete
and the Block Protect command must be input again. Removing the V
mode.
Specify a device block address and make the following signal settings A9 = OE = V
Applying V
/ACC
. The target blocks are the two pairs of boot blocks. The top boot blocks are BA69 and BA70; the
ID
IL
. Now when a pulse is input to WE for t
to RESET and inputting the Block Protect 2 command also performs block protection. The
ID
nor a command sequence is required. Protection is performed simply by inputting V
PPLH
ID
IH
) to the device (see Block protection 1) or by supplying a high
IH
and A0 = A6 = V
on
until this write is completed; however, no intervention is
IL
WP
and A1 = V
/ACC
PPLH
TC58FVM5(T/B)(2/3)A(FT/XB)65
, the device will start to write to the block
releases the mode. From now on, if it is
IL
IH
are input. Now the device writes to the
ID
. If the block is protected, 01h is output.
ID
ID
is removed from the RESET pin.
to the RESET pin. Now Write and
input from RESET exits this
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ID
, A1 = V
ID
to the A9 pin.
IH
ID
and CE
from A9
IL
IL