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TMPM330 - Keil

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Under development<br />

<strong>TMPM330</strong> (rev 0.4)17-47<br />

<strong>TMPM330</strong><br />

・When FLCS is other than "0 x 3F" (not all the protection bits are<br />

programmed):<br />

The protection condition can be canceled by the automatic protection bit erase operation.<br />

With this device, protection bits set by an individual block can be erased handling all the<br />

blocks at a time as shown in Table 17-22. The target bits are specified in the seventh bus<br />

write cycle and when the command is completed, the device is in a condition all the blocks<br />

are erased. The protection status of each block can be checked by FLCS to<br />

be described later. This status of the programming operation for automatic protection bits<br />

can be checked by monitoring FLCS . When the automatic operation to erase<br />

protection bits is normally terminated, the protection bits of FLCS selected for<br />

erasure are set to "0."<br />

In any case, any new command sequence is not accepted while it is in an automatic<br />

operation to erase protection bits. If it is desired to stop the operation, use the hardware<br />

reset function. When the automatic operation to erase protection bits is normally terminated,<br />

it returns to the read mode.<br />

The FLCS bit is "0" while in automatic operation and it turns to "1" when the<br />

automatic operation is terminated.<br />

Flash Memory Operation

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