LH28F320BJHE-PTTL90 Sharp Electronics, LH28F320BJHE-PTTL90 Datasheet - Page 21

• Manufacturer Part Number: LH28F320BJHE-PTTL90
• Manufacturer: Sharp Electronics

Specifications of LH28F320BJHE-PTTL90

• Cell Type: NOR
• Density: 32Mb
• Access Time (max): 90ns
• Interface Type: Parallel
• Boot Type: Top
• Address Bus: 22/21Bit
• Operating Supply Voltage (typ): 3.3V
• Operating Temp Range: -40C to 85C
• Package Type: TSOP
• Sync/async: Asynchronous
• Operating Temperature Classification: Industrial
• Operating Supply Voltage (min): 2.7V
• Operating Supply Voltage (max): 3.6V
• Word Size: 8/16Bit
• Number Of Words: 4M/2M
• Supply Current: 30mA
• Mounting: Surface Mount
• Pin Count: 48
• Lead Free Status / Rohs Status: Not Compliant

sharp
FULL STATUS CHECK PROCEDURE
Block Erase Successful
Read Status Register
Data(See Above)
Check if Desired
Block Address
Write D0H,
Read Status
Block Erase
Read Status
Write 20H
Write 70H
Full Status
Complete
Register
Register
SR.4,5=
SR.1=
SR.7=
SR.7=
SR.3=
SR.5=
Start
1
1
0
0
0
0
0
0
1
1
1
1
Device Protect Error
Command Sequence
Block Erase
V
Block Erase Error
Suspend
No
CCW
Range Error
Error
Yes
Figure 6. Automated Block Erase Flowchart
Suspend Block
Erase Loop
LHF32J04
Repeat for subsequent block erasures.
Full status check can be done after each block erase or after a sequence of
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 Register Command in cases
If error is detected, clear the Status Register before attempting retry or other error recovery.
Operation
Operation
where multiple blocks are erased before full status is checked.
block erasures.
Standby
Standby
Standby
Standby
Standby
Standby
Write
Write
Write
Read
Read
Bus
Bus
Read Status
Erase Setup
Command
Command
Confirm
Register
Erase
Status Register Data
Check SR.7
1=WSM Ready
0=WSM Busy
Data=20H
Addr=X
Data=D0H
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
Both 1=Command Sequence Error
Check SR.5
1=Block Erase Error
Data=70H
Addr=X
CCW
Error Detect
Comments
Comments
Rev. 1.27
19