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X24645S-2.7 Datasheet

  • X24645S-2.7

  • Advanced 2-Wire Serial E 2 PROM with Block Lock TM Protectio...

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  • XICOR   XICOR

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Preliminary Information
64K
X24645
DESCRIPTION
8192 x 8 Bit
Advanced 2-Wire Serial E
2
PROM with Block Lock
TM
Protection
FEATURES
The X24645 is a CMOS 65,536-bit serial E
2
PROM,
internally organized 8192 x 8. The X24645 features a
serial interface and software protocol allowing opera-
tion on a simple two wire bus.
Two device select inputs (S
1
, S
2
) allow up to four
devices to share a common two wire bus.
A Write Protect Register at the highest address loca-
tion, 1FFFh, provides three new write protection
features: Software Write Protect, Block Write Protect,
and Hardware Write Protect. The Software Write
Protect feature prevents any nonvolatile writes to the
X24645 until the WEL bit in the write protect register is
set. The Block Write Protection feature allows the user
to individually write protect four blocks of the array by
programming two bits in the write protect register. The
Programmable Hardware Write Protect feature allows
the user to install the X24645 with WP tied to V
CC
,
program the entire memory array in place, and then
enable the hardware write protection by programming
a WPEN bit in the write protect register. After this,
selected blocks of the array, including the write protect
register itself, are permanently write protected, as long
as WP remains HIGH.
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
2.7V to 5.5V Power Supply
Low Power CMOS
鈥擜ctive Read Current Less Than 1mA
鈥擜ctive Write Current Less Than 3mA
鈥擲tandby Current Less Than 1
碌
A
Internally Organized 8192 x 8
New Programmable Block Lock Protection
鈥擲oftware Write Protection
鈥擯rogrammable hardware Write Protect
Block Lock (0, 1/4, 1/2, or all of the E
2
PROM
array)
2 Wire Serial Interface
Bidirectional Data Transfer Protocol
32 Byte Page Write Mode
鈥擬inimizes Total Write Time Per Byte
Self Timed Write Cycle
鈥擳ypical Write Cycle Time of 5ms
High Reliability
鈥擡ndurance: 100,000 Cycles
鈥擠ata Retention: 100 Years
Available Packages
鈥?-Lead PDIP
鈥?-Lead SOIC (JEDEC)
鈥?4-Lead SOIC (JEDEC)
鈥?0-Lead TSSOP
FUNCTIONAL DIAGRAM
WP
START CYCLE
VCC
VSS
SDA
START
STOP
LOGIC
CONTROL
LOGIC
SLAVE ADDRESS
REGISTER
+COMPARATOR
XDEC
E
2
PROM
256 X 256
H.V. GENERATION
TIMING &
CONTROL
WRITE PROTECT
REGISTER AND
LOGIC
SCL
LOAD
INC
S2
S1
R/W
WORD
ADDRESS
COUNTER
YDEC
8
CK
PIN
DOUT
ACK
2783 ILL F01
DATA REGISTER
DOUT
漏
Xicor, 1995, 1996 Patents Pending
2783-3.5 5/13/96 T1/C0/D0 NS
1
Characteristics subject to change without notice

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  • 英文版
    400KHz 2-Wire Serial E 2 PROM with Block Lock
    XICOR
  • 英文版
    400KHz 2-Wire Serial E 2 PROM with Block Lock
    XICOR [Xic...
  • 英文版
    400 KHz 2-Wire Serial E 2 PROM
    XICOR
  • 英文版
    400 KHz 2-Wire Serial E 2 PROM
    XICOR [Xic...
  • 英文版
    Advanced 2-Wire Serial E 2 PROM with Block Lock TM Protectio...
    XICOR
  • 英文版
    Advanced 2-Wire Serial E 2 PROM with Block Lock TM Protectio...
    XICOR [Xic...
  • 英文版
    400KHz 2-Wire Serial E 2 PROM with Block Lock
    XICOR
  • 英文版
    400KHz 2-Wire Serial E 2 PROM with Block Lock
    XICOR [Xic...
  • 英文版
    I2C Serial EEPROM
    ETC
  • 英文版
    Advanced 2-Wire Serial E2PROM with Block LockTM Protection
    ICMIC [IC ...
  • 英文版
    Advanced 2-Wire Serial E2PROM with Block LockTM Protection
    ICMIC [IC ...
  • 英文版
    Advanced 2-Wire Serial E2PROM with Block LockTM Protection
    ICMIC [IC ...
  • 英文版
    Advanced 2-Wire Serial E 2 PROM with Block Lock TM Protectio...
    XICOR
  • 英文版
    Advanced 2-Wire Serial E 2 PROM with Block Lock TM Protectio...
    XICOR [Xic...
  • 英文版
    Advanced 2-Wire Serial E 2 PROM with Block Lock TM Protectio...
    XICOR
  • 英文版
    Advanced 2-Wire Serial E 2 PROM with Block Lock TM Protectio...
    XICOR [Xic...
  • 英文版
    Advanced 2-Wire Serial E 2 PROM with Block Lock TM Protectio...
    XICOR
  • 英文版
    Advanced 2-Wire Serial E 2 PROM with Block Lock TM Protectio...
    XICOR [Xic...
  • 英文版
    400KHz 2-Wire Serial E 2 PROM with Block Lock
    XICOR
  • 英文版
    400KHz 2-Wire Serial E 2 PROM with Block Lock
    XICOR [Xic...

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