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X84041VI-3 Datasheet

  • X84041VI-3

  • Micro Port Saver E2PROM

  • 13頁

  • XICOR   XICOR

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A
PPLICATION
N
OTES AND
D
EVELOPMENT
S
YSTEM
A V A I L A B L E
AN10
X84041
鈥?AN17 鈥?AN57 鈥?XK84
4K
X84041
Micro Port Saver E
2
PROM
MPS
鈩?/div>
E
2
PROM
FEATURES
鈥?Direct Interface to Micros
鈥擡liminates I/O port requirements
鈥擭o interface glue logic required
鈥擡liminates need for parallel to serial converters
鈥?3.3Mbps data transfer rate
鈥?Low Power CMOS
鈥?.7V to 5.5V Operation
鈥擲tandby Current Less than 50
碌
A
鈥擜ctive Current Less than 1mA
鈥?45ns Read Access Time
鈥?8-Byte Page Write Mode
鈥?Typical Nonvolatile Write Cycle Time: 5ms
鈥?High Reliability
鈥?00,000 Endurance Cycles
鈥擥uaranteed Data Retention: 100 Years
鈥?8-Lead PDIP, 8-Lead SOIC, and
14-Lead TSSOP Packages
DESCRIPTION
The X84041 Micro Port Saver is a 4096-bit CMOS
E
2
PROM designed for a direct interface to port limited
microcontroller or I/O limited microprocessor designs.
The X84041 provides all of the benefits of serial memo-
ries, such as low cost, low power, low voltage operation,
and small package size, while featuring higher data
transfer rates and reduced interface code requirements鈥?/div>
without the need for a dedicated serial bus. The X84041
is organized as a 512 x 8, but is also suitable in 16-bit or
32-bit environments, due to the bit serial nature of the
interface.
The X84041 directly connects to the processor bus and
communicates over a single data line using a sequence
of standard bus read and write operations. This elimi-
nates the need for dedicated port pins, parallel to serial
converters, complicated ASIC implementations, or other
glue logic, lowering system cost.
BLOCK DIAGRAM
WP
8
7
X84041
6
5
VCC
NC
OE
WE
2704 ILL F01.2
PIN CONFIGURATION
DIP/SOIC
CE
I/O
WP
VSS
1
2
3
4
H.V. GENERATION
TIMING & CONTROL
CE
OE
WE
I/O
COMMAND
DECODE
AND
CONTROL
LOGIC
X
DEC
EEPROM
ARRAY
512 x 8
TSSOP
CE
I/O
NC
NC
NC
WP
V
SS
1
2
3
5
6
7
14
13
12
10
9
8
V
CC
NC
NC
NC
NC
OE
WE
2704 ILL F02a.1
Y DECODE
DATA REGISTER
2704 ILL F02
4
X84041
11
PIN NAMES
I/O
CE
OE
WE
WP
V
CC
V
SS
NC
Data Input/Output
Chip Enable Input
Output Enable Input
Write Enable Input
Write Protect Input
Supply Voltage
Ground
No Connect
2704 PGM T01
漏 Xicor, Inc. 1994, 1995, 1996 Patents Pending
2704-4.4 6/12/96 T3/C1/D0 NS
1
Characteristics subject to change without notice

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