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PDF LH28F020SU-N Data sheet ( Hoja de datos )

Número de pieza LH28F020SU-N
Descripción 2M (256K bb 8) Flash Memory
Fabricantes Sharp Electrionic Components 
Logotipo Sharp Electrionic Components Logotipo



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No Preview Available ! LH28F020SU-N Hoja de datos, Descripción, Manual

LH28F020SU-N
2M (256K × 8) Flash Memory
FEATURES
256K × 8 Bit Configuration
5 V Write/Erase Operation (5 V VPP)
– No Requirement for DC/DC Converter to
Write Erase
80 ns Maximum Access Time
16 Independently Lockable Blocks (16K)
100,000 Erase Cycles per Block
Automated Byte Write/Block Erase
– Command User Interface
– Status Register
System Performance Enhancement
– Erase Suspend for Read
– Two-Byte Write
– Full Chip Erase
Data Protection
– Hardware Erase/Write Lockout during
Power Transitions
– Software Erase/Write Lockout
Independently Lockable for Write/Erase on
Each Block (Lock Block and Protect
Set/Reset)
5 µA (TYP.) ICC in CMOS Standby
State-of-the-Art 0.55 µm ETOX™ Flash
Technology
Packages
– 32-Pin, 525 mil. SOP Package
– 32-Pin, 1.2 mm × 8 mm × 20 mm
TSOP (Type I) Package
32-PIN TSOP
TOP VIEW
A11
A9
A8
A13
A14
A17
WE
VCC
VPP
A16
A15
A12
A7
A6
A5
A4
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
32 OE
31 A10
30 CE
29 DQ7
28 DQ6
27 DQ5
26 DQ4
25 DQ3
24 GND
23 DQ2
22 DQ1
21 DQ0
20 A0
19 A1
18 A2
17 A3
28F020SUN80-1
Figure 1. TSOP Configuration
32-PIN SOP
TOP VIEW
VPP
A16
A15
A12
A7
A6
A5
A4
A3
A2
A1
A0
DQ0
DQ1
DQ2
GND
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
32 VCC
31 WE
30 A17
29 A14
28 A13
27 A8
26 A9
25 A11
24 OE
23 A10
22 CE
21 DQ7
20 DQ6
19 DQ5
18 DQ4
17 DQ3
28F020SUN80-20
Figure 2. SOP Configuration
1

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LH28F020SU-N pdf
2M (256K × 8) Flash Memory
MEMORY MAP
LH28F020SU-N
3FFFFH
3C000H
3BFFFH
38000H
37FFFH
34000H
33FFFH
30000H
2FFFFH
2C000H
2BFFFH
28000H
27FFFH
24000H
23FFFH
20000H
1FFFFH
1C000H
1BFFFH
18000H
17FFFH
14000H
13FFFH
10000H
0FFFFH
0C000H
0BFFFH
08000H
07FFFH
04000H
03FFFH
00000H
16KB BLOCK
16KB BLOCK
16KB BLOCK
16KB BLOCK
16KB BLOCK
16KB BLOCK
16KB BLOCK
16KB BLOCK
16KB BLOCK
16KB BLOCK
16KB BLOCK
16KB BLOCK
16KB BLOCK
16KB BLOCK
16KB BLOCK
16KB BLOCK
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
28F020SUN80-3
Figure 4. Chip Memory Map
BUS OPERATIONS, COMMANDS AND STATUS REGISTER DEFINITIONS
Bus Operations
MODE
CE » OE » WE
A0 DQ0-7 NOTE
Read
VIL VIL VIH
X DOUT
1
Output Disable
VIL VIH VIH
X High-Z 1
Standby
VIH X X X High-Z 1
Manufacturer ID VIL VIL VIH VIL B0H
2
Device ID
VIL VIL VIH VIH
ID
2
Write
VIL VIH VIL X DIN 1, 3
NOTES:
1. X can be VIH or VIL for address or control pins, which is either VOL or VOH.
2. A0 at VIL provide manufacturer ID codes. A0 at VIH provide device ID codes.
Device ID Code = 30H. All other addresses are set to zero.
3. Commands for different Erase operations, Data Write operations of Lock-Block
operations can only be successfully completed when VPP = VPPH.
5

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LH28F020SU-N arduino
2M (256K × 8) Flash Memory
LH28F020SU-N
START
WRITE B0H
READ COMPATIBLE
STATUS REGISTER
CSR.7 = 0
1
CSR.6 = 0
1
WRITE FFH
ERASE COMPLETED
READ ARRAY DATA
DONE NO
READING
YES
WRITE D0H
WRITE FFH
BUS
OPERATION
Write
Read
Standby
COMMAND
COMMENTS
Erase
Suspend
D = B0H
A=X
Q = CSRD
Toggle CE or OE
to update CSRD.
A=X
Check CSR.7
1 = WSM Ready
0 = WSM Busy
Standby
Write
Read
Array
Check CSR.6
1 = Erase Suspended
0 = Erase Completed
D = FFH
A=X
Read
Q = AD
Read must be from
block other than the
one suspended.
Write
Erase
Resume
D = D0H
A=X
See Command Bus Cycle notes for description of codes.
ERASE RESUMED
READ ARRAY DATA
Figure 7. Erase Suspend to Read Array with Compatible Status Register
28F020SUN80-6
11

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