LH28F800BVE-TV85 Sharp Electronics, LH28F800BVE-TV85 Datasheet - Page 18

• Manufacturer Part Number: LH28F800BVE-TV85
• Manufacturer: Sharp Electronics

Specifications of LH28F800BVE-TV85

• Cell Type: NOR
• Density: 8Mb
• Access Time (max): 85ns
• Interface Type: Parallel
• Boot Type: Top
• 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

FULL STATUS CHECK PROCEDURE
Block Erase Successful
Read Status Register
Data(See Above)
Check if Desired
Block Address
Block Address
Read Status
Block Erase
Write D0H,
Write 20H,
Full Status
Complete
Register
SR.4,5=
SR.7=
SR.3=
SR.1=
SR.5=
Start
1
0
0
0
0
0
1
1
1
1
Command Sequence
Device Protect Error
Block Erase
Block Erase Error
V
No
Suspend
PP
Range Error
Error
Yes
Figure 5. Automated Block Erase Flowchart
Suspend Block
Erase Loop
Repeat for subsequent block erasures.
Full status check can be done after each block erase or after a sequence of
SR.5,SR.4,SR.3 and SR.1 are only cleared by the Clear Status
If error is detected, clear the Status Register before attempting
Write FFH after the last operation to place device in read array mode.
block erasures.
Register Command in cases where multiple blocks are erased
before full status is checked.
retry or other error recovery.
Operation
Operation
Standby
Standby
Standby
Standby
Standby
Read
Write
Write
Bus
Bus
Erase Setup
Command
Command
Confirm
Erase
Data=20H
Data=D0H
Addr=Within Block to be Erased
Addr=Within Block to be Erased
Status Register Data
Check SR.7
1=WSM Ready
0=WSM Busy
Check SR.3
1=V
Check SR.1
1=Device Protect Detect
Check SR.4,5
Check SR.5
Both 1=Command Sequence Error
1=Block Erase Error
PP
Error Detect
Comments
Comments
Rev. 1.2