
Pin Assignment
Pin Description
Pin Name
A0~A15
DQ0~DQ7
CE
OE /VPP
NC
I/O/C/P
I
I/O
C
C/P
—
Description
Address inputs
Data inputs/outputs
Chip enable
Output enable/program voltage supply
No connection
Absolute Maximum Ratings
Operation Temperature Commercial ...................................................................................0
°
C to +70
°
C
Storage Temperature.........................................................................................................–65
°
C to 125
°
C
Applied VCC Voltage with Respect to GND....................................................................... –0.6V to 7.0V
Applied Voltage on Input Pin with Respect to GND ......................................................... –0.6V to 7.0V
Applied Voltage on Output Pin with Respect to GND ............................................. –0.6V to V
CC
+0.5V
Applied Voltage on A9 Pin with Respect to GND ............................................................ –0.6V to 13.5V
Applied VPP Voltage with Respect to GND ......................................................................–0.6V to 13.5V
Applied READ Voltage (Functionality is guaranteed between these limits) ................... +3V to +3.6V
Note: These are stress ratings only. Stresses exceeding the range specified under “Absolute Maxi-
mum Ratings” may cause substantial damage to the device. Functional operation of this device
at other conditions beyond those listed in the specification is not implied and prolonged
exposure to extreme conditions may affect device reliability.
HT27LC512
2
6th May ’99