x28ht512 Intersil Corporation, x28ht512 Datasheet - Page 2

• Manufacturer Part Number: x28ht512
• Description: High Temperature, 5 Volt, Byte Alterable E2prom
• Manufacturer: Intersil Corporation

X28HT512
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 X28HT512 through the
I/O pins.
Back Bias Voltage (V
It is required to provide -3V on pin 1. This negative
voltage improves higher temperature functionality.
FUNCTIONAL DIAGRAM
0
–A
15
)
0
BB
–I/O
A 7 –A 15
A 0 –A 6
)
7
)
V CC
V SS
V BB
WE
OE
CE
LATCHES AND
LATCHES AND
X BUFFERS
Y BUFFERS
LOGIC AND
DECODER
DECODER
CONTROL
TIMING
2
Write Enable (WE)
The Write Enable input controls the writing of data to the
X28HT512.
PIN NAMES
DATA INPUTS/OUTPUTS
AND LATCHES
A
I/O
WE
CE
OE
V
V
V
NC
I/O BUFFERS
Symbol
0
BB
CC
SS
512K-BIT
E 2 PROM
I/O 0 –I/O 7
–A
ARRAY
0
–I/O
15
6614 FHD F01
7
Address Inputs
Data Input/Output
Write Enable
Chip Enable
Output Enable
–3V
+5V
Ground
No Connect
Description
6614 PGM T01