LH28F008SCR-L85 Sharp Electronics, LH28F008SCR-L85 Datasheet - Page 20

• Manufacturer Part Number: LH28F008SCR-L85
• Manufacturer: Sharp Electronics

Specifications of LH28F008SCR-L85

• Cell Type: NOR
• Density: 8Mb
• Access Time (max): 85ns
• Interface Type: Parallel
• Boot Type: Not Required
• Address Bus: 20b
• Operating Supply Voltage (typ): 5V
• Operating Temp Range: 0C to 70C
• Package Type: TSOP
• Program/erase Volt (typ): 3.3/5/12V
• Sync/async: Asynchronous
• Operating Temperature Classification: Commercial
• Operating Supply Voltage (min): 4.75V
• Operating Supply Voltage (max): 5.25V
• Word Size: 8b
• Number Of Words: 1M
• Supply Current: 50mA
• Mounting: Surface Mount
• Pin Count: 40
• 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 20H,
Write D0H,
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
Figure 5. Automated Block Erase Flowchart
Yes
Suspend Block
Erase Loop
LHF08CTF
Repeat for subsequent block erasures.
Full status check can be done after each block erase or after a sequence of
If error is detected, clear the Status Register before attempting
Write FFH after the last operation to place device in read array mode.
SR.5,SR.4,SR.3 and SR.1 are only cleared by the Clear Status
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
Addr=Within Block to be Erased
Data=D0H
Addr=Within Block to be Erased
Status Register Data
1=WSM Ready
0=WSM Busy
Check SR.3
Check SR.1
Check SR.7
1=V
1=Device Protect Detect
Only required for systems
Check SR.4,5
Both 1=Command Sequence Error
Check SR.5
1=Block Erase Error
RP#=V
implementing lock-bit configuration
PP
Error Detect
IH
,Block Lock-Bit is Set
Comments
Comments
Rev. 1.3
17