LH28F320BJHE-PTTL90 Sharp Electronics, LH28F320BJHE-PTTL90 Datasheet - Page 26

• 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
Set Lock-Bit Successful
Block/Device Address
Read Status Register
Data(See Above)
Write 01H/F1H,
Check if Desired
Status Register
Set Lock-Bit
Read Status
Write 60H
Full Status
Write 70H
Complete
Register
SR.4,5=
SR.1=
SR.4=
SR.7=
SR.7=
SR.3=
Start
Read
1
1
0
0
0
0
0
0
1
1
1
1
Device Protect Error
Command Sequence
V
Set Lock-Bit Error
CCW
Range Error
Error
Figure 11. Set Block and Permanent Lock-Bit Flowchart
LHF32J04
Repeat for subsequent lock-bit set operations.
Full status check can be done after each lock-bit set operation or after a sequence of
Write FFH after the last lock-bit set 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
lock-bit set operations.
Operation
where multiple lock-bits are set before full status is checked.
Standby
Standby
Standby
Standby
Standby
Standby
Write
Write
Write
Read
Read
Bus
Bus
Block or Permanent
Lock-Bit Confirm
Block/Permanent
Lock-Bit Setup
Read Status
Command
Command
Register
Set
Set
Status Register Data
Check SR.7
1=WSM Ready
0=WSM Busy
Data=60H
Addr=X
Data=01H(Block),
Addr=Block Address(Block),
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.4
1=Set Lock-Bit Error
Data=70H
Addr=X
Permanent Lock-Bit is Set
(Set Block Lock-Bit Operation)
CCW
F1H(Permanent)
Device Address(Permanent)
Error Detect
Comments
Comments
Rev. 1.27
24