AT49F8192-12RC データシートの表示（PDF） - Atmel Corporation
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AT49F8192-12RC Datasheet PDF : 11 Pages
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will be read. Examining the toggle bit may begin at any time
during a program cycle.
HARDWARE DATA PROTECTION: Hardware features
protect against inadvertent programs to the AT49F8192 in
the following ways: (a) VCC sense: if VCC is below 3.8V
(typical), the program function is inhibited. (b) VCC power
on delay: once VCC has reached the VCC sense level, the
Command Definition (in Hex)(1)
device will automatically time out 10 ms (typical) before
programming. (c) Program inhibit: holding any one of OE
low, CE high or WE high inhibits program cycles. (d) Noise
filter: pulses of less than 15 ns (typical) on the WE or CE
inputs will not initiate a program cycle.
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
1
Addr DOUT
Chip Erase
6
5555 AA 2AAA 55 5555 80 5555 AA 2AAA 55
5555
10
Sector
6
5555
AA
2AAA 55 5555
80
5555 AA 2AAA 55
SA(4)(5)
30
Erase
Word
Program
4
5555 AA 2AAA 55 5555 A0 Addr DIN
Boot Block
6
5555 AA 2AAA 55 5555 80 5555 AA 2AAA 55
5555
40
Lockout (2)
Product ID
3
5555 AA 2AAA 55 5555 90
Entry
Product ID
3
5555 AA 2AAA 55 5555 F0
Exit(3)
Product ID
1
xxxx F0
Exit(3)
Notes: 1. The DATA FORMAT in each bus cycle is as follows:
I/O15 - I/O8 (Don't Care); I/O7 - I/O0 (Hex)
2. The 8K word boot sector has the address range
00000H to 01FFFH for the AT49F8192 and 7E000H
to 7FFFFH for the AT49F8192T.
3. Either one of the Product ID Exit commands can be
used.
4. SA = sector addresses:
For the AT49F8192
SA = 03XXX for PARAMETER BLOCK 1
SA = 05XXX for PARAMETER BLOCK 2
SA = 7FXXX for MAIN MEMORY ARRAY
For the AT49F8192T
SA = 7DXXX for PARAMETER BLOCK 1
SA = 7BXXX for PARAMETER BLOCK 2
SA = 79XXX for MAIN MEMORY ARRAY
5. When the boot block programming lockout feature is
not enabled, the boot block and the main memory
block will erase together (form the same sector erase
command). Once the boot region has been pro-
tected, only the main memory array sector will erase
when its sector erase command is issued.
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 to +0.6V
*NOTICE:
Stresses beyong 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.
Voltage on OE
with Respect to Ground ...................................-0.6V to +13.5V
4 AT49F8192/8192T
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