AT49F010-90JC Atmel, AT49F010-90JC Datasheet - Page 3

• Manufacturer Part Number: AT49F010-90JC
• Manufacturer: Atmel

Specifications of AT49F010-90JC

• Cell Type: NOR
• Density: 1Mb
• Access Time (max): 90ns
• Interface Type: Parallel
• Boot Type: Bottom
• Address Bus: 17b
• Operating Supply Voltage (typ): 5V
• Operating Temp Range: 0C to 70C
• Package Type: PLCC
• Program/erase Volt (typ): 4.5 to 5.5V
• Sync/async: Asynchronous
• Operating Temperature Classification: Commercial
• Operating Supply Voltage (min): 4.5V
• Operating Supply Voltage (max): 5.5V
• Word Size: 8b
• Number Of Words: 128K
• Supply Current: 30mA
• Mounting: Surface Mount
• Pin Count: 32
• Lead Free Status / Rohs Status: Not Compliant

DATA POLLING: The AT49F010/HF010 features DATA
polling to indicate the end of a program cycle. During a pro-
gram cycle an attempted read of the last byte loaded will
result in the complement of the loaded data on I/O7. Once
the program cycle has been completed, true data is valid
on all outputs and the next cycle may begin. DATA polling
may begin at any time during the program cycle.
T O G G L E B I T : I n a d d i t i o n t o D A T A p o l l i n g t h e
AT49F010/HF010 provides another method for determining
the end of a program or erase cycle. During a program or
erase operation, successive attempts to read data from the
device will result in I/O6 toggling between one and zero.
Command Definition (in Hex)
Notes:
Absolute Maximum Ratings*
Command
Sequence
Read
Chip Erase
Byte
Program
Boot Block
Lockout
Product ID
Entry
Product ID
Exit
Product ID
Exit
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 V
Voltage on OE
with Respect to Ground ...................................-0.6V to +13.5V
(2)
(2)
1. The 8K word boot sector has the address range 00000H to 01FFFH.
2. Either one of the Product ID exit commands can be used.
(1)
Cycles
Bus
1
6
4
6
3
3
1
XXXX
5555
5555
5555
5555
5555
Addr
Addr
1st Bus
Cycle
D
Data
AA
AA
AA
AA
AA
F0
OUT
2AAA
2AAA
2AAA
2AAA
2AAA
Addr
2nd Bus
Cycle
CC
Data
+ 0.6V
55
55
55
55
55
5555
5555
5555
5555
5555
Addr
3rd Bus
Cycle
Once the program cycle has completed, I/O6 will stop tog-
gling and valid data will be read. Examining the toggle bit
may begin at any time during a program cycle.
HARDWARE DATA PROTECTION: Hardware features
p r o t e c t a g a i n s t i n a d v e r t e n t p r o g r a m s t o t h e
AT49F010/HF010 in the following ways: (a) V
V
ited; (b) Program inhibit—holding any one of OE low, CE
high or WE high inhibits program cycles; and (c) Noise fil-
ter—Pulses of less than 15 ns (typical) on the WE or CE
inputs will not initiate a program cycle.
*NOTICE:
CC
Data
is below 3.8V (typical), the program function is inhib-
A0
80
80
90
F0
Addr
5555
Addr
5555
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.
4th Bus
Cycle
Data
D
AA
AA
IN
2AAA
2AAA
Addr
5th Bus
Cycle
Data
55
55
Addr
5555
5555
CC
6th Bus
Cycle
sense—if
Data
10
40
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