X28HC64 Xicor, X28HC64 Datasheet - Page 2

• Manufacturer Part Number: X28HC64
• Description: 5 Volt/ Byte Alterable E2PROM
• Manufacturer: Xicor

X28HC64
PIN DESCRIPTIONS
Addresses (A
The Address inputs select an 8-bit memory location
during a read or write operation.
Chip Enable (CE)
The Chip Enable input must be LOW to enable all read/
write operations. When CE is HIGH, power consumption
is reduced.
Output Enable (OE)
The Output Enable input controls the data output buffers
and is used to initiate read operations.
Data In/Data Out (I/O
Data is written to or read from the X28HC64 through the
I/O pins.
Write Enable (WE)
The Write Enable input controls the writing of data to the
X28HC64.
FUNCTIONAL DIAGRAM
0
–A
12
)
0
–I/O
ADDRESS
INPUTS
A 0 –A 12
7
)
V CC
V SS
WE
CE
OE
LATCHES AND
LATCHES AND
X BUFFERS
Y BUFFERS
LOGIC AND
DECODER
DECODER
CONTROL
TIMING
2
PIN NAMES
DATA INPUTS/OUTPUTS
A
I/O
WE
CE
OE
V
V
NC
Symbol
0
CC
SS
AND LATCHES
–A
I/O BUFFERS
0
–I/O
65,536-BIT
E 2 PROM
I/O 0 –I/O 7
12
ARRAY
7
Address Inputs
Data Input/Output
Write Enable
Chip Enable
Output Enable
+5V
Ground
No Connect
Description
3857 FHD F01
3857 PGM T01