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X84041 Datasheet, PDF (1/13 Pages) Xicor Inc. – Micro Port Saver E2PROM | |||
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APPLICATION NOTES AND DEVELOPMENT SYSTEM
AVA I L A B L E
X84041AN10 ⢠AN17 ⢠AN57 ⢠XK84
4K
X84041
Micro Port Saver E2PROM
MPS⢠E2PROM
FEATURES
⢠Direct Interface to Micros
âEliminates I/O port requirements
âNo interface glue logic required
âEliminates need for parallel to serial converters
⢠3.3Mbps data transfer rate
⢠Low Power CMOS
â2.7V to 5.5V Operation
âStandby Current Less than 50µA
âActive Current Less than 1mA
⢠45ns Read Access Time
⢠8-Byte Page Write Mode
⢠Typical Nonvolatile Write Cycle Time: 5ms
⢠High Reliability
â100,000 Endurance Cycles
âGuaranteed Data Retention: 100 Years
⢠8-Lead PDIP, 8-Lead SOIC, and
14-Lead TSSOP Packages
DESCRIPTION
The X84041 Micro Port Saver is a 4096-bit CMOS
E2PROM 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 requirementsâ
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.
PIN CONFIGURATION
CE
I/O
WP
VSS
DIP/SOIC
1
8
2
7
X84041
3
6
4
5
VCC
NC
OE
WE
2704 ILL F01.2
BLOCK DIAGRAM
WP
H.V. GENERATION
TIMING & CONTROL
CE
COMMAND
OE
DECODE
AND
WE
CONTROL
I/O
LOGIC
X
DEC
EEPROM
ARRAY
512 x 8
TSSOP
CE 1
I/O 2
14
VCC
13 NC
NC 3
12 NC
NC 4 X84041 11 NC
NC 5
10 NC
WP 6
9 OE
VSS
7
8 WE
2704 ILL F02a.1
© Xicor, Inc. 1994, 1995, 1996 Patents Pending
2704-4.4 6/12/96 T3/C1/D0 NS
PIN NAMES
I/O
Data Input/Output
CE
Chip Enable Input
OE
Output Enable Input
WE
Write Enable Input
WP
Write Protect Input
VCC
Supply Voltage
VSS
Ground
NC
No Connect
Y DECODE
DATA REGISTER
2704 ILL F02
2704 PGM T01
1
Characteristics subject to change without notice
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