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Datasheet: L29S800F (No company)

8megabit (1Mx8 /512kx16) 3 Volt Cmos Flash Memery

 

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L29S800F PRELIMINARY
8MEGABIT (1M8 /512K16)

LinkSmart
3 VOLT CMOS FLASH MEMERY
A
1 071802
Revision history
Rev. No. Approved date
History
Remark (purpose)
A
July 17 2002
Initial issue
Preliminary

L29S800F PRELIMINARY
8MEGABIT (1M8 /512K16)

LinkSmart
3 VOLT CMOS FLASH MEMERY
A
2 071802
!
FEATURES
Single 3.0 V read, program, and erase
Minimizes system level power requirements
Compatible with JEDEC-standard commands
Uses same software commands as E
2
PROMs
Compatible with JEDEC-standard world-wide pinouts
48-pin TSOP(I)
Minimum 100,000 program/erase cycles
High performance
70 ns maximum access time
Sector erase architecture
One 8K word, two 4K words, one 16K word, and fifteen 32K words sectors in word mode
One 16K byte, two 8K bytes, one 32K byte, and fifteen 64K bytes sectors in byte mode
Any combination of sectors can be concurrently erased. Also supports full chip erase
Boot Code Sector Architecture
T = Top sector
B = Bottom sector
Embedded Erase
TM
Algorithms
Automatically pre-programs and erases the chip or any sector
Embedded Program
TM
Algorithms
Automatically writes and verifies data at specified address
Data Polling and Toggle Bit feature for detection of program or erase cycle completion
Ready/Busy output (RY/ BY )
Hardware method for detection of program or erase cycle completion
Automatic sleep mode
When addresses remain stable, automatically switch themselves to low power mode
Low V
CC
write inhibit
2.5 V
Erase Suspend/Resume
Suspends the erase operation to allow a read in another sector within the same device
Sector protection
Hardware method disables any combination of sectors from program or erase operations
Sector Protection set function by Extended sector Protect command
Temporary sector unprotection
Temporary sector unprotection via the RESET pin
*:
Embedded Erase
TM
and Embedded Program
TM
are trademarks of Advanced Micro Devices, Inc.


L29S800F PRELIMINARY
8MEGABIT (1M8 /512K16)

LinkSmart
3 VOLT CMOS FLASH MEMERY
A
3 071802
GENERAL DESCRIPTION

The L29S800F/-B are a 8M-bit, 3.0 V-only Flash memory organized as 1M bytes of 8 bits each or 512K
words of 16 bits each. The L29S800F/-B are offered in a 48-pin TSOP(I) package, These devices are
designed to be programmed in-system with the standard system 3.0 V V
CC
supply. 12.0 V V
PP
and 5.0
V V
CC
are not required for write or erase operations. The devices can also be reprogrammed in standard
EPROM programmers.

The standard L29S800F/-B offer access times 70 ns and 120 ns, allowing operation of high-speed
microprocessors without wait states. To eliminate bus contention the devices have separate chip
enable (
CE
), write enable (
WE
), and output enable ( OE ) controls.

The L29S800F/-B are pin and command set compatible with JEDEC standard E
2
PROMs. Commands
are written to the command register using standard microprocessor write timings. Register contents
serve as input to an internal state-machine which controls the erase and programming circuitry. Write
cycles also internally latch addresses and data needed for the programming and erase operations.
Reading data out of the devices is similar to reading from 5.0 V and 12.0 V Flash or EPROM devices.

The L29S800F/-B are programmed by executing the program command sequence. This will invoke the
Embedded Program Algorithm which is an internal algorithm that automatically times the program pulse
widths and verifies proper cell margin. Typically, each sector can be programmed and verified in about
0.5 seconds. Erase is accomplished by executing the erase command sequence. This will invoke the
Embedded Erase Algorithm which is an internal algorithm that automatically preprograms the array if it
is not already programmed before executing the erase operation. During erase, the devices
automatically time the erase pulse widths and verify proper cell margin.

A sector is typically erased and verified in 1.0 second. (If already completely preprogrammed.)

The devices also feature a sector erase architecture. The sector mode allows each sector to be erased
and reprogrammed without affecting other sectors. The L29S800F/-B are erased when shipped from
the factory.

The devices feature single 3.0 V power supply operation for both read and write functions. Internally
generated and regulated voltages are provided for the program and erase operations. A low V
CC
detector automatically inhibits write operations on the loss of power. The end of program or erase is
detected by Data Polling of DQ
7
, by the Toggle Bit feature on DQ
6
, or the RY/ BY output pin. Once the
end of a program or erase cycle has been completed, the devices internally reset to the read mode.

LST's Flash technology combines years of EPROM and E
2
PROM experience to produce the highest
levels of quality, reliability, and cost effectiveness. The L29S800F/-B memories electrically erase the
entire chip or all bits within a sector simultaneously via Fowler-Nordhiem tunneling. The bytes/words
are programmed one byte/word at a time using the EPROM programming mechanism of hot electron
injection.


L29S800F PRELIMINARY
8MEGABIT (1M8 /512K16)

LinkSmart
3 VOLT CMOS FLASH MEMERY
A
4 071802
FLEXIBLE SECTOR-ERASE ARCHITECTURE
One 16K byte, two 8K bytes, one 32K byte, and fifteen 64K bytes
Individual-sector, multiple-sector, or bulk-erase capability
Individual or multiple-sector protection is user definable.
(x8) (x16)
(x8) (x16)
16K byte
FFFFFH
7FFFFH
64K byte
FFFFFH
7FFFFH
8K byte
FBFFFH
7DFFFH
64K byte
EFFFFH
77FFFH
8K byte
F9FFFH
7CFFFH 64K
byte
DFFFFH 6FFFFH
32K byte
F7FFFH
7BFFFH 64K
byte
CFFFFH 67FFFH
64K byte
EFFFFH
77FFFH
64K byte
BFFFFH
5FFFFH
64K byte
DFFFFH 6FFFFH
64K
byte
AFFFFH 57FFFH
64K byte
CFFFFH
67FFFH
64K byte
9FFFFH
4FFFFH
64K byte
BFFFFH 5FFFFH
64K
byte
8FFFFH 47FFFH
64K byte
AFFFFH
57FFFH
64K byte
7FFFFH
3FFFFH
64K byte
9FFFFH 4FFFFH
64K
byte
6FFFFH 37FFFH
64K byte
8FFFFH
47FFFH 64K
byte
5FFFFH 2FFFFH
64K byte
7FFFFH 3FFFFH
64K byte
4FFFFH
27FFFH
64K byte
6FFFFH 37FFFH
64K
byte
3FFFFH 1FFFFH
64K byte
5FFFFH
2FFFFH
64K byte
2FFFFH
17FFFH
64K byte
4FFFFH 27FFFH
64K
byte
1FFFFH 0FFFFH
64K byte
3FFFFH
1FFFFH 64K
byte
0FFFFH 07FFFH
64K byte
2FFFFH 17FFFH
32K byte
07FFFH
03FFFH
64K byte
1FFFFH
0FFFFH
8K byte
05FFFH
02FFFH
64K byte
0FFFFH 07FFFH
8K byte
03FFFH
01FFFH
64K byte
00000H 00000H
16K byte
00000H
00000H
L29S800F Sector Architecture
L29S800F-B Sector Architecture


L29S800F PRELIMINARY
8MEGABIT (1M8 /512K16)

LinkSmart
3 VOLT CMOS FLASH MEMERY
A
5 071802
BLOCK DIAGRAM

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