DataSheet.es    


PDF L29S800F Data sheet ( Hoja de datos )

Número de pieza L29S800F
Descripción 8MEGABIT (1M8 /512K16) 3 VOLT CMOS FLASH MEMERY
Fabricantes ETC 
Logotipo ETC Logotipo



Hay una vista previa y un enlace de descarga de L29S800F (archivo pdf) en la parte inferior de esta página.


Total 30 Páginas

No Preview Available ! L29S800F Hoja de datos, Descripción, Manual

LinkSmart
L29S800F
8MEGABIT (1M×8 /512K×16)
3 VOLT CMOS FLASH MEMERY
PRELIMINARY
A
Rev. No. Approved date
A July 17 2002
Revision history
History
Initial issue
Remark (purpose)
Preliminary
1 071802

1 page




L29S800F pdf
LinkSmart
L29S800F
8MEGABIT (1M×8 /512K×16)
3 VOLT CMOS FLASH MEMERY
BLOCK DIAGRAM
PRELIMINARY
A
5 071802

5 Page





L29S800F arduino
LinkSmart
L29S800F
8MEGABIT (1M×8 /512K×16)
3 VOLT CMOS FLASH MEMERY
PRELIMINARY
A
Write
Device erasure and programming are accomplished via the command register. The contents of the
register serve as inputs to the internal state machine. The state machine outputs dictate the function of
the device.
The command register itself does not occupy any addressable memory location. The register is a latch
used to store the commands, along with the address and data information needed to execute the
command. The command register is written by bringing WE to VIL, while CE is at VIL and OE is at
VIH. Addresses are latched on the falling edge of WE or CE , whichever happens later; while data is
latched on the rising edge of WE or CE , whichever happens first. Standard microprocessor write
timings are used.
Refer to AC Write Characteristics and the Erase/Programming Waveforms for specific timing
parameters.
Sector Protection
The L29S800F/-B feature hardware sector protection. This feature will disable both program and erase
operations in any number of sectors (0 through 18). The sector protection feature is enabled using
programming equipment at the user’s site. The devices are shipped with all sectors unprotected.
Alternatively, LST may program and protect sectors in the factory prior to shipping the device.
To activate this mode, the programming equipment must force VID on address pin A9 and control pin
OE , (suggest VID = 11.5 V), CE = VIL, and A6 = VIL. The sector addresses (A18, A17, A16, A15, A14,
A13, and A12) should be set to the sector to be protected. Tables 5 and 6 define the sector address for
each of the nineteen (19) individual sectors. Programming of the protection circuitry begins on the
falling edge of the WE pulse and is terminated with the rising edge of the same. Sector addresses
must be held constant during the WE pulse. See Figures 16 and 24 for sector protection waveforms
and algorithm.
To verify programming of the protection circuitry, the programming equipment must force VID on
address pin A9 with CE and OE at VIL and WE at VIH. Scanning the sector addresses (A18, A17,
A16, A15, A14, A13, and A12) while (A6, A1, A0) = (0, 1, 0) will produce a logical “1” code at device output
DQ0 for a protected sector. Otherwise the devices will read 00H for unprotected sector. In this mode,
the lower order addresses, except for A0, A1, and A6 are DON’T CARES. Address locations with A1 =
VIL are reserved for Autoselect manufacturer and device codes.
A-1 requires to apply to VIL on byte mode.
It is also possible to determine if a sector is protected in the system by writing an Autoselect command.
Performing a read operation at the address location XX02H, where the higher order addresses (A18,
A17, A16, A15, A14, A13, and A12) are the desired sector address will produce a logical “1” at DQ0 for a
protected sector. See Tables 4.1 and 4.2 for Autoselect codes.
Temporary Sector Unprotection
This feature allows temporary unprotection of previously protected sectors of the L29S800F/-B devices
in order to change data. The Sector Unprotection mode is activated by setting the RESET pin to high
voltage (12 V). During this mode, formerly protected sectors can be programmed or erased by selecting
11 071802

11 Page







PáginasTotal 30 Páginas
PDF Descargar[ Datasheet L29S800F.PDF ]




Hoja de datos destacado

Número de piezaDescripciónFabricantes
L29S800F8MEGABIT (1M8 /512K16) 3 VOLT CMOS FLASH MEMERYETC
ETC

Número de piezaDescripciónFabricantes
SLA6805M

High Voltage 3 phase Motor Driver IC.

Sanken
Sanken
SDC1742

12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters.

Analog Devices
Analog Devices


DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares,
permitiéndote verlos en linea o descargarlos en PDF.


DataSheet.es    |   2020   |  Privacy Policy  |  Contacto  |  Buscar