X28HT010
PIN DESCRIPTIONS
Addresses (A
0
–A
16
)
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
0
–I/O
7
)
Data is written to or read from the X28HT010 through the
I/O pins.
Write Enable (WE)
The Write Enable input controls the writing of data to the
X28HT010.
Back Bias Voltage (V
BB
)
It is required to provide -3V on pin 1. This negative
voltage improves higher temperature functionality.
FUNCTIONAL DIAGRAM
PIN NAMES
Symbol
A
0
–A
16
I/O
0
–I/O
7
WE
CE
OE
V
BB
V
CC
V
SS
NC
Description
Address Inputs
Data Input/Output
Write Enable
Chip Enable
Output Enable
–3V
+5V
Ground
No Connect
6613 PGM T01
A8–A16
X BUFFERS
LATCHES AND
DECODER
1M-BIT
E2PROM
ARRAY
A0–A7
Y BUFFERS
LATCHES AND
DECODER
I/O BUFFERS
AND LATCHES
I/O0–I/O7
DATA INPUTS/OUTPUTS
CE
OE
WE
VCC
VSS
VBB
6613 FHD F01
CONTROL
LOGIC AND
TIMING
2
XICOR [ XICOR INC. ]
