ATA6613 ATMEL Corporation, ATA6613 Datasheet - Page 312
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ATA6613
Manufacturer Part Number
ATA6613
Description
Ata6613
Manufacturer
ATMEL Corporation
Datasheet
1.ATA6613.pdf
(362 pages)
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6.24.7.11
6.24.7.12
312
ATA6612/ATA6613
Programming the Lock Bits
Reading the Fuse and Lock Bits
Figure 6-121. Programming the FUSES Waveforms
The algorithm for programming the Lock bits is as follows (refer to
page 307
The Lock bits can only be cleared by executing Chip Erase.
The algorithm for reading the Fuse and Lock bits is as follows (refer to
on page 307
1. A: Load Command “0010 0000”.
2. C: Load Data Low Byte. Bit n = “0” programs the Lock bit. If LB mode 3 is programmed
3. Give WR a negative pulse and wait for RDY/BSY to go high.
1. A: Load Command “0000 0100”.
2. Set OE to “0”, BS2 to “0” and BS1 to “0”. The status of the Fuse Low bits can now be
3. Set OE to “0”, BS2 to “1” and BS1 to “1”. The status of the Fuse High bits can now be
4. Set OE to “0”, BS2 to “1”, and BS1 to “0”. The status of the Extended Fuse bits can now
5. Set OE to “0”, BS2 to “0” and BS1 to “1”. The status of the Lock bits can now be read at
6. Set OE to “1”.
RESET +12V
RDY/BSY
PAGEL
(LB1 and LB2 is programmed), it is not possible to program the Boot Lock bits by any
External Programming mode.
read at DATA (“0” means programmed).
read at DATA (“0” means programmed).
be read at DATA (“0” means programmed).
DATA (“0” means programmed).
XTAL1
DATA
XA1
XA0
BS1
BS2
WR
OE
for details on Command and Data loading):
for details on Command loading):
0x40
A
DATA
C
Write Fuse Low byte
XX
0x40
A
DATA
C
Write Fuse high byte
XX
“Programming the Flash” on
0x40
A
“Programming the Flash”
DATA
C
Write Extended Fuse byte
XX
9111C–AUTO–02/08
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