LH28F320SKTD-ZR Sharp Microelectronics, LH28F320SKTD-ZR Datasheet - Page 27

• Manufacturer Part Number: LH28F320SKTD-ZR
• Description: IC FLASH 32MBIT 70NS 48TSOP
• Manufacturer: Sharp Microelectronics

Specifications of LH28F320SKTD-ZR

• Format - Memory: FLASH
• Memory Type: FLASH
• Memory Size: 32M (4Mx8, 2Mx16)
• Speed: 70ns
• Interface: Parallel
• Voltage - Supply: 2.7 V ~ 3.6 V, 4.5 V ~ 5.5 V
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 48-TSOP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 425-2463; LHF32KZR

FULL STATUS CHECK PROCEDURE
Block Erase Successful
Read Status Register
Check if Desired
Block Address
Block Address
Data(See Above)
Read Status
Read Status
Block Erase
Write 20H,
Write D0H,
Full Status
Write 70H
Complete
Register
Register
SR.7=
SR.7=
Start
SR.4,5=
SR.3=
SR.1=
SR.5=
1
1
0
0
0
0
0
0
1
1
1
1
Block Erase
Command Sequence
Device Protect Error
No
Suspend
Block Erase Error
V
PP
Range Error
Error
Figure 5. Automated Block Erase Flowchart
Yes
Suspend Block
Erase Loop
LHF32KZR
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
Standby
Read
Read
Write
Write
Write
Bus
Bus
Read Status
Erase Setup
Command
Command
Register
Confirm
Erase
Data=20H
Data=D0H
Data=70H
Addr=X
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
Check SR.1
Status Register Data
1=WSM Ready
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
Check SR.7
0=WSM Busy
WP#=V
implementing lock-bit configuration
PP
Error Detect
IL
,Block Lock-Bit is Set
Comments
Comments
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