 Applications |
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| General |
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| Product Features |
| |
| Applications |
| Posted |
FAQ |
| 08/18/05 |
For parts that use a two-bus cycle program command, are the sectors locked at power up ? If so, how can I reprogram the part ? |
| 08/18/05 |
Atmel offers two different versions of the 16M, 32M and the 64M flash devices.What is the difference between the two versions ? |
| 08/17/05 |
On some of Atmel's 49 series data sheets why is it that during the sixth bus cycle of a sector erase operation, the address is latched on the rising edge of WE/ ? |
| 08/16/05 |
Is there any difference in the ball pitch and the ball diameter of the two different versions of the 16M, 32M and 64M flash devices offered in a CBGA package ? |
| 08/16/05 |
What is hardware data protection? Is it available on all Atmel memory devices ? |
| 08/16/05 |
Can I tie the RDY/Busy/ outputs of several flash devices together? Can this pin be left floating? |
| 08/16/05 |
Can I use a dual plane part to replace a single plane part? If so, what are the issues I need to be concerned about? |
| 08/16/05 |
What happens if I lose power during a program or erase operation? |
| 08/16/05 |
The CFI table of parts that use a four-bus program cycle shows that the erase block information is identical for the top and the bottom boot block devices. How can I differentiate between the two devices? |
| 08/16/05 |
How can I read CFI information? |
| 08/16/05 |
What is CFI ? |
| 08/16/05 |
Can I tie OE/ and WE/ pins together ? |
| 08/16/05 |
If the CE/ and OE/ signals are low and WE/ is low, can I read from the device? |
| 08/16/05 |
How do I exit the Product Identification mode on parts that use a two-bus program cycle? |
| 08/16/05 |
For parts that use a two-bus cycle program command sequence can I read from the memory with CE/, OE/ low and WE/ high ? |
| 08/16/05 |
Is there any difference in the loading of command sequences between parts which support a two-bus and a four-bus program cycle ? |
| 08/16/05 |
Are the sector sizes of 29 series parts the same ? |
| 08/16/05 |
What will happen if I change the sector address during a programming operation ? |
| 08/16/05 |
For 29 series parts, can I load data in a random order within a sector during the programming cycle ? |
| 08/16/05 |
For 29 series parts, if the data in the sector is not fully loaded, what will happen to the other bytes in the sector after the completion of the programming operation? |
| 08/16/05 |
What is the difference between enabling SDP and enabling the boot block lockout feature? Once enabled can I disable the boot block feature? |
| 08/16/05 |
How can I tell if the boot block lockout feature is enabled? |
| 08/16/05 |
What is the function of the boot block lockout feature? What is the difference between the top and bottom boot block? Do the 29 and 49 series parts have both boot blocks? |
| 08/16/05 |
Is the SDP feature available on 49 series devices? |
| 08/16/05 |
Does Atmel recommend the user to enable the SDP feature and why? |
| 08/16/05 |
If the SDP is enabled and a write to the device without the three byte unlock algorithm is attempted, what will happen? |
| 08/16/05 |
How can I tell if the SDP feature is enabled? |
| 08/16/05 |
How can I enable the SDP feature? Once the SDP is enabled, can I still write to the part? How can I disable the SDP feature? |
| 08/16/05 |
Does SDP protect the whole device or only certain sectors? |
| 08/16/05 |
What is software data protection (SDP)? |
| 08/16/05 |
What is the function of status bit I/O2 ? |
| 08/16/05 |
Does Atmel recommend using the data polling or toggle bit feature during the programming operation ? |
| 08/16/05 |
How long does it take to program a byte or a sector of data? |
| 08/16/05 |
Does the data in the enable and disable algorithm actually get written to the device? |
| 08/16/05 |
What is the difference between a WE/ and a CE/ controlled write? Does one waveform have to be enclosed in the other waveform as shown in your data book? |
| 08/16/05 |
What is the function of the Vccq pin? Can I leave it floating during normal program and erase operations? |
| 08/16/05 |
What is the function of the Vpp pin? Can I leave the Vpp pin floating during normal program and erase operations? |
| 08/16/05 |
Can I replace a part which supports the x16 only mode with one that supports both x8 and x16 modes? |
| 08/16/05 |
Is it possible to dynamically switch the device from byte mode (BYTE/='0') to word mode (BYTE/='1')? |
| 08/16/05 |
The datasheets of parts that support both byte and word modes show only one command sequence for programming. Is there any distinction between byte/word program command sequences? |
| 08/16/05 |
For devices that support a four-bus cycle program command sequence, why do some datasheets show a four-nibble address and other datasheets show a three-nibble address? |
| 08/16/05 |
Atmel offers parts with a T designation and without a T designation. What is the difference between the two versions? |
| 08/16/05 |
When programming data into one region of a flash device, can I read data from another region? |
| 08/16/05 |
What is the difference between a No connect (NC) pin and a Don't Connect (DC) pin? |
| 08/16/05 |
How is Icc measured? What is the difference between Icc and Isb? Why are there two different values for Isb? |
| 08/16/05 |
After power is applied to the flash, can I access the flash immediately or is there any timing constraint associated with the power on delay? |
| 08/16/05 |
What is the difference between data retention and endurance? What is the data retention of Atmel's Flash/EEPROM devices? |
| 08/16/05 |
Once I enter the product ID mode, can I read valid data from the device? |
| 08/16/05 |
What is the product identification and what is it used for? |
| 08/16/05 |
What is the difference between Flash and Parallel EEPROM? |
| 08/16/05 |
For a 3V part, can I apply 5V to Vcc ? |
| Product Features |
| Posted |
FAQ |
| 08/18/05 |
Can I reprogram the data in block B of the 128-bit Protection Register ? |
| 08/16/05 |
What is the 128-bit protection register used for ? |
| 08/16/05 |
What is the dual word/byte programming mode ? |
| Packaging |
| Posted |
FAQ |
| 08/18/05 |
What is a green package ? |
| 08/16/05 |
What is a VSOP package? |
| 08/16/05 |
What is a CBGA and a uBGA package? |
| Availability |
| Posted |
FAQ |
| 08/16/05 |
Does Atmel offers parts with a secure feature ? |
| 08/16/05 |
Does Atmel offer flash devices in a lead free package ? What is the designator for the lead free Packaging Option? |
| 08/16/05 |
Does Atmel offer flash devices in a green package ? What is the designator for the Green (Pb/Halide-free) Packaging Option? |
| 08/16/05 |
How can I obtain a die-map for NVM parts ? |
| General |
| Posted |
FAQ |
| 08/16/05 |
My programmer does not support a particular part or package. What can I do? |
| 08/16/05 |
If the BV or LV part is not supported on my programmer, can I use the 5V algorithm to program my low voltage parts? |
| 08/16/05 |
Does Atmel recommend a specific programmer manufacturer? Where can I get a list of programmers? |
| 08/16/05 |
How can I get parts programmed with my code? |
| 08/16/05 |
What is the difference between commercial, extended commercial and industrial devices? |
| 08/16/05 |
What is the difference between a volatile and nonvolatile memory? |
