LH28F800BVE-BV85 Sharp Electronics, LH28F800BVE-BV85 Datasheet - Page 20

• Manufacturer Part Number: LH28F800BVE-BV85
• Manufacturer: Sharp Electronics

Specifications of LH28F800BVE-BV85

• Cell Type: NOR
• Density: 8Mb
• Access Time (max): 85ns
• Interface Type: Parallel
• Boot Type: Bottom
• Address Bus: 20/19Bit
• Operating Supply Voltage (typ): 5V
• Operating Temp Range: 0C to 70C
• Package Type: TSOP
• 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: 1M/512K
• Supply Current: 65mA
• Mounting: Surface Mount
• Pin Count: 48
• Lead Free Status / Rohs Status: Not Compliant

sharp
FULL STATUS CHECK PROCEDURE
Read Status Register
Data and Address
Write 40H or 10H,
Word/Byte Write
Data(See Above)
Word/Byte Write
Check if Desired
Write Word/Byte
Status Register
Successful
Full Status
Complete
Address
SR.7=
SR.3=
SR.4=
SR.1=
Read
Start
1
0
0
0
0
1
1
1
Word/Byte Write
Word/Byte Write Error
Device Protect Error
V
No
Suspend
PP
Range Error
Figure 6. Automated Word/Byte Write Flowchart
Yes
Suspend Word/Byte
Write Loop
LHF80V35
Repeat for subsequent byte writes.
SR full status check can be done after each Word/Byte write, or after a sequence of
If error is detected, clear the Status Register before attempting
Write FFH after the last Word/Byte write operation to place device in
SR.4,SR.3 and SR.1 are only cleared by the Clear Status Register
Word/Byte writes.
read array mode.
command in cases where multiple locations are written before
full status is checked.
retry or other error recovery.
Operation
Operation
Standby
Standby
Standby
Standby
Read
Write
Write
Bus
Bus
Setup Word/Byte Write
Word/Byte Write
Command
Command
Data=40H or 10H
Addr=Location to Be Written
Data=Data to Be Written
Addr=Location to Be Written
1=WSM Ready
0=WSM Busy
Check SR.3
Check SR.1
Status Register Data
Check SR.7
1=V
1=Device Protect Detect
Check SR.4
1=Data Write Error
PP
Error Detect
Comments
Comments
Rev. 1.1
17