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X25160VI fiches techniques PDF

Xicor - SPI Serial E2PROM With Block LockTM Protection

Numéro de référence X25160VI
Description SPI Serial E2PROM With Block LockTM Protection
Fabricant Xicor 
Logo Xicor 





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X25160VI fiche technique
APPLICATION NOTE
AVA I L A B L E
X25160
AN61
16K
X25160
2K x 8 Bit
SPI Serial E2PROM With Block LockTM Protection
FEATURES
• 2MHz Clock Rate
• SPI Modes (0,0 & 1,1)
• 2K X 8 Bits
— 32 Byte Page Mode
• Low Power CMOS
— <1µA Standby Current
— <5mA Active Current
• 2.7V To 5.5V Power Supply
• Block Lock Protection
— Protect 1/4, 1/2 or all of E2PROM Array
• Built-in Inadvertent Write Protection
— Power-Up/Power-Down protection circuitry
— Write Enable Latch
— Write Protect Pin
• Self-Timed Write Cycle
— 5ms Write Cycle Time (Typical)
• High Reliability
— Endurance: 100,000 cycles
— Data Retention: 100 Years
— ESD protection: 2000V on all pins
• 8-Lead PDlP Package
• 8-Lead SOIC Package
• 14-Lead TSSOP Package
DESCRIPTION
The X25160 is a CMOS 16384-bit serial E2PROM,
internally organized as 2K x 8. The X25160 features a
Serial Peripheral Interface (SPI) and software protocol
allowing operation on a simple three-wire bus. The bus
signals are a clock input (SCK) plus separate data in (SI)
and data out (SO) lines. Access to the device is con-
trolled through a chip select (CS) input, allowing any
number of devices to share the same bus.
The X25160 also features two additional inputs that
provide the end user with added flexibility. By asserting
the HOLD input, the X25160 will ignore transitions on its
inputs, thus allowing the host to service higher priority
interrupts. The WP input can be used as a hardwire input
to the X25160 disabling all write attempts to the status
register, thus providing a mechanism for limiting end
user capability of altering 0, 1/4, 1/2 or all of the memory.
The X25160 utilizes Xicor’s proprietary Direct Write™
cell, providing a minimum endurance of 100,000 cycles
and a minimum data retention of 100 years.
FUNCTIONAL DIAGRAM
SO
SI
SCK
CS
HOLD
STATUS
REGISTER
COMMAND
DECODE
AND
CONTROL
LOGIC
WRITE
PROTECT
LOGIC
X DECODE
LOGIC
16
16
32
2K BYTE
ARRAY
16 X 256
16 X 256
32 X 256
WRITE
CONTROL
AND
WP TIMING
LOGIC
Direct Write™ and Block Lock™ Protection is a trademark of Xicor, Inc.
©Xicor, Inc. 1994, 1995, 1996 Patents Pending
3064-3.9 6/11/96 T4/C1/D0 NS
1
32 8
Y DECODE
DATA REGISTER
3064 ILL F01
Characteristics subject to change without notice

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