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X25650Z-2.5 Datasheet

  • X25650Z-2.5

  • SPI Serial EEPROM

  • 214.30KB

  • 15頁

  • ETC

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Recommended System Management
Alternative: X5643
64K
X25650
5MHz SPI Serial EEPROM with Block Lock
鈩?/div>
Protection
鈥?Packages
鈥?-lead SOIC
鈥?4-lead SOIC
DESCRIPTION
8K x 8 Bit
N
O
T
FO R
R EC
N O
EW M
M
D E
ES N
D
IG E
D
N
FEATURES
鈥?5MHz clock rate
鈥?Low Power CMOS
鈥?lt;1碌A standby current
鈥?lt;5mA active current
鈥?2.5V To 5.5V power supply
鈥?SPI modes (0,0 & 1,1)
鈥?8K X 8 bits
鈥?2 byte page mode
鈥?Block lock protection
鈥擯rotect 1/4, 1/2 or all of EEPROM array
鈥?Programmable hardware write protection
鈥擨n-circuit programmable ROM mode
鈥?Built-in inadvertent write protection
鈥擯ower-up/down protection circuitry
鈥擶rite enable latch
鈥擶rite protect pin
鈥?Self-timed write cycle
鈥?ms write cycle time (typical)
鈥?High reliability
鈥擡ndurance: 1,000,000 cycles
鈥擠ata retention: 100 years
鈥擡SD protection: 2000V on all pins
BLOCK DIAGRAM
Status
Register
Write
Protect
Logic
X Decode
Logic
8Kbyte
Array
64
64 X 256
SO
SI
SCK
CS
HOLD
Command
Decode
and
Control
Logic
64
64 X 256
128
128 X 256
WP
Write
Control
and
Timing
Logic
32
8
Y Decode
Data Register
Direct Write
鈩?/div>
and Block Lock
鈩?/div>
Protection is a trademark of Xicor, Inc.
The X25650 is a CMOS 65,536-bit serial EEPROM,
internally organized as 8K x 8. The X25650 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
controlled through a chip select (CS) input, allowing
any number of devices to share the same bus.
The X25650 also features two additional inputs that pro-
vide the end user with added 鏗俥xibility. By asserting the
HOLD input, the X25650 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 X25650 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 X25650 utilizes Xicor鈥檚 proprietary Direct Write
鈩?/div>
cell, providing a minimum endurance of 1,000,000
cycles and a minimum data retention of 100 years.
REV 1.1 9/8/00
www.xicor.com
Characteristics subject to change without notice.
1 of 15
This Material Copyrighted by Its Respective Manufacturer

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