AT52BR1674 View Datasheet(PDF) - Atmel Corporation
Part Name
Description
Manufacturer
AT52BR1674 Datasheet PDF : 39 Pages
| |||
AT52BR1672(T)/1674(T)
Command Definition in Hex(1)
Command
Sequence
Bus
Cycles
1st Bus
Cycle
Addr Data
2nd Bus
Cycle
Addr Data
3rd Bus
Cycle
Addr Data
4th Bus
Cycle
Addr
Data
5th Bus
Cycle
Addr Data
6th Bus
Cycle
Addr Data
Read
Chip Erase
1
Addr DOUT
6
555
AA
AAA(2)
55
555
80
555
AA
AAA
55
555
10
Sector Erase
6
555
AA
AAA
55
555
80
555
AA
AAA
55
SA(3)(4)
30
Word Program
Enter Single Pulse
Program Mode
4
555
AA
AAA
55
555
A0
Addr
DIN
6
555
AA
AAA
55
555
80
555
AA
AAA
55
555
A0
Single Pulse
Word Program
1
Addr
DIN
Sector Lockdown
6
555
AA
AAA
55
555
80
555
AA
AAA
55
SA(3)(4)
60
Erase Suspend
1
XXX
B0
Erase Resume
1
PA(5)
30
Product ID Entry
3
555
AA
AAA
55
555
90
Product ID Exit(6)
3
555
AA
AAA
55
555
F0
Product ID Exit(6)
1
XXX
F0
Program Protection
Register
4
555
AA
AAA
55
555
C0
Addr
DIN
Lock Protection
Register - Block B
4
555
AA
AAA
55
555
C0
080
X0
Status of Block B
Protection
4
555
AA
AAA
55
555
90
80
DOUT(7)
Notes: 1. The DATA FORMAT shown for each bus cycle is as follows; I/O7 - I/O0 (Hex). In word operation I/O15 - I/O8 are Don’t Care.
The ADDRESS FORMAT shown for each bus cycle is as follows: A11 - A0 (Hex). Address A19 through A11 are Don’t Care.
2. Since A11 is a Don’t Care, AAA can be replaced with 2AA.
3. SA = sector address. Any word address within a sector can be used to designate the sector address (see page 11 for
details).
4. Once a sector is in the lockdown mode, data in the protected sector cannot be changed unless the chip is reset or power
cycled.
5. PA is the plane address (A19-A18).
6. Either one of the Product ID Exit commands can be used.
7. If data bit D1 is “0”, block B is locked. If data bit D1 is “1”, block B can be reprogrammed.
Absolute Maximum Ratings*
Temperature under Bias ................................ -55°C to +125°C
Storage Temperature ..................................... -65°C to +150°C
All Input Voltages
(including NC Pins)
with Respect to Ground ...................................-0.6V to +6.25V
All Output Voltages
with Respect to Ground .............................-0.6V to VCC + 0.6V
Voltage on OE and VPP
with Respect to Ground ...................................-0.6V to +13.0V
*NOTICE:
Stresses beyond those listed under “Absolute
Maximum Ratings” may cause permanent dam-
age to the device. This is a stress rating only and
functional operation of the device at these or any
other conditions beyond those indicated in the
operational sections of this specification is not
implied. Exposure to absolute maximum rating
conditions for extended periods may affect
device reliability.
9
2604B–STKD–09/02
Share Link: 