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X25330 Datasheet, PDF (1/14 Pages) Xicor Inc. – 5MHz SPI Serial E 2 PROM with Block Lock TM Protection | |||
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32K
X25330
4K x 8 Bit
5MHz SPI Serial E2PROM with Block LockTM Protection
FEATURES
⢠5MHz Clock Rate
⢠Low Power CMOS
<1µA Standby Current
<5mA Active Current
⢠2.5V To 5.5V Power Supply
⢠SPI Modes (0,0 & 1,1)
⢠4K X 8 Bits
32 Byte Page Mode
⢠Block Lock⢠Protection
Protect 1/4, 1/2 or all of E2PROM Array
⢠Programmable Hardware Write Protection
In-Circuit Programmable ROM Mode
⢠Built-in Inadvertent Write Protection
Power-Up/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
⢠Packages
8-Lead SOIC
14-Lead TSSOP
FUNCTIONAL DIAGRAM
STATUS
REGISTER
WRITE
PROTECT
LOGIC
SO
SI
SCK
CS
HOLD
COMMAND
DECODE
AND
CONTROL
LOGIC
DESCRIPTION
The X25330 is a CMOS 32K-bit serial E2PROM, inter-
nally organized as 4K x 8. The X25330 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 X25330 also features two additional inputs that
provide the end user with added ï¬exibility. By
asserting the HOLD input, the X25330 will ignore tran-
sitions on its inputs, thus allowing the host to service
higher priority interrupts. The WP input can be used as
a hardwire input to the X25330 disabling all write
attempts to the status register, thus providing a mech-
anism for limiting end user capability of altering 0, 1/4,
1/2 or all of the memory.
The X25330 utilizes Xicorâs proprietary Direct WriteTM
cell, providing a minimum endurance of 100,000
cycles and a minimum data retention of 100 years.
X DECODE
LOGIC
32
32
64
4K BYTE
ARRAY
32 X 256
32 X 256
64 X 256
WRITE
CONTROL
AND
WP
TIMING
LOGIC
Direct Write⢠and Block Lock⢠Protection is a trademark of Xicor, Inc.
©Xicor, Inc. 1994 - 1997 Patents Pending
1
7048â1.0 6/18/97 T0/C0/D0 SH
32
8
Y DECODE
DATA REGISTER
7037 FRM F01
Characteristics subject to change without notice
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