TB28F400BVT80 Intel, TB28F400BVT80 Datasheet - Page 23

• Manufacturer Part Number: TB28F400BVT80
• Manufacturer: Intel

Specifications of TB28F400BVT80

• Density: 4Mb
• Access Time (max): 80ns
• Interface Type: Parallel
• Boot Type: Top
• Address Bus: 19/18Bit
• Operating Supply Voltage (typ): 3.3/5V
• Operating Temp Range: -40C to 85C
• Package Type: SOP
• Sync/async: Asynchronous
• Operating Temperature Classification: Industrial
• Operating Supply Voltage (min): 3/4.5V
• Operating Supply Voltage (max): 3.6/5.5V
• Word Size: 8/16Bit
• Number Of Words: 512K/256K
• Supply Current: 70mA
• Mounting: Surface Mount
• Pin Count: 44
• Lead Free Status / Rohs Status: Not Compliant

FULL STATUS CHECK PROCEDURE
SEE NEW DESIGN RECOMMENDATIONS
Read Status Register
Word/Byte Address
Data (See Above)
Word/Byte Program
Write Word/Byte
Word/Byte Program
Status Register
Check if Desired
Data/Address
Write 40H,
Full Status
Successful
SR.7 = 1
Complete
Read
SR.4 =
Start
SR.3=
?
YES
0
0
1
1
NO
Figure 9. Automated Word/Byte Programming Flowchart
Word/Byte Program
V
PP
Range Error
Error
Repeat for subsequent word/byte program operations.
SR Full Status Check can be done after each word/byte program,
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,
If error is detected, clear the Status Register before attempting
or after a sequence of word/byte programs.
read array mode.
before further attempts are allowed by the Write State Machine.
in cases where multiple bytes are programmed before full
status is checked.
retry or other error recovery.
Operation
Operation
Standby
Standby
Standby
4-MBIT SmartVoltage BOOT BLOCK FAMILY
Read
Write
Write
Bus
Bus
Command
Command
Program
Program
Setup
Check SR.3
1 = V
Check SR.4
1 = Word/Byte Program Error
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.
PP
Low Detect
Comments
Comments
0530_09
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