PA28F400B5T80 Intel, PA28F400B5T80 Datasheet - Page 21

• Manufacturer Part Number: PA28F400B5T80
• Manufacturer: Intel

Specifications of PA28F400B5T80

• Density: 4Mb
• Access Time (max): 80ns
• Interface Type: Parallel
• Boot Type: Top
• Address Bus: 19/18Bit
• Operating Supply Voltage (typ): 5V
• Operating Temp Range: 0C to 70C
• Package Type: SOP
• Sync/async: Asynchronous
• Operating Temperature Classification: Commercial
• Operating Supply Voltage (min): 4.5V
• Operating Supply Voltage (max): 5.5V
• Word Size: 8/16Bit
• Number Of Words: 512K/256K
• Supply Current: 65mA
• Mounting: Surface Mount
• Pin Count: 44
• Lead Free Status / Rohs Status: Not Compliant

FULL STATUS CHECK PROCEDURE
PRELIMINARY
Read Status Register
Word/Byte Program
Word/Byte Program
Word/Byte Address
Data (See Above)
Check if Desired
Write Word/Byte
Status Register
Data/Address
Full Status
Write 40H,
Complete
Successful
SR.7 = 1
SR.3 =
SR.4 =
Read
Start
?
YES
0
0
1
1
NO
Word/Byte Program
Figure 8. Automated Word/Byte Program Flowchart
V
PP
Range Error
Error
Repeat for subsequent word/byte program operations.
SR Full Status Check can be done after each word/byte
Write FFH after the last program operation to reset device to
SR.3 MUST be cleared, if set during a program attempt,
SR.4 is only cleared by the Clear Status Register Command, in cases
If error is detected, clear the Status Register before attempting
before further attempts are allowed by the Write State Machine.
where multiple bytes are programmed before full status is checked.
retry or other error recovery.
program operation, or after a sequence of word/byte programs.
read array mode.
Operation
Operation
Standby
Standby
Standby
Write
Write
Read
Bus
Bus
28F200B5, 28F004/400B5, 28F800B5
Command
Command
Program
Program
Setup
Data = 40H
Addr = Word/Byte to Program
Data = Data to Program
Addr = Location to Program
Status Register Data
Toggle CE# or OE#
Check SR.7
1 = WSM Ready
0 = WSM Busy
to Update SRD.
Check SR.3
1 = V
Check SR.4
1 = Word Byte Program Error
PP
Low Detect
Comments
Comments
0599-07
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