HT27C512
Pin Assignment
A 1 5
1
2
3
4
5
6
7
8
9
1 0
1 1
1 2
1 3
1 4
A 1 2
A 7
A 6
A 5
A 4
A 3
A 2
A 1
A 0
D Q 0
D Q 1
D Q 2
V S S
2 8
2 7
2 6
2 5
2 4
2 3
2 2
2 1
2 0
1 9
1 8
1 7
1 6
1 5
V C C
A 1 4
A 1 3
A 8
A 9
A 1 1
O E /V P P
A 1 0
C E
D Q 7
D Q 6
D Q 5
D Q 4
D Q 3
A 6
A 5
A 4
A 3
A 2
A 1
A 0
N C
D Q 0
9
1 0
1 1
1 2
1 3
1 4
1 5
1 6
1 7
1 8
1 9
2 0
8
7
6
5
N C
N C
V C C
A 1 3
A 1 4
V C C
A 1 2
N C
N C
A 1 5
N
A 1
A 1
A
C
5
2
7
3 0
3 1
3 2
3 0
3 1
3 2
4
3
2
1
4
N C
V S S
D Q 2
D Q 1
3
2
1
2 9
2 8
2 7
A 8
A 9
A 1 1
N C
O E /V P P
A 1 0
C E
D Q 7
D Q 6
A 7
A 6
A 5
A 4
A 3
A 2
A 1
A 0
D Q 0
9
8
7
6
5
2 9
2 8
2 7
A 1 4
A 1 3
A 8
A 9
A 1 1
O E /V P P
A 1 0
C E
D Q 7
H T 2 7 C 5 1 2
3 2 P L C C -A
2 6
2 5
2 4
2 3
2 2
2 1
1 0
1 1
1 2
1 3
1 4
H T 2 7 C 5 1 2
3 2 P L C C -B
2 6
2 5
2 4
2 3
2 2
2 1
1 5
1 6
1 7
1 8
1 9
D Q 5
2 0
D Q 6
D Q 4
D Q 3
V S S
D Q 2
D Q 1
D Q 5
D Q 4
D Q 3
H T 2 7 C 5 1 2
2 8 D IP -A /S O P -A
Pin Description
Pin Name
A0~A15
DQ0~DQ7
CE
OE/VPP
NC
VCC
VSS
I/O/P
I
I/O
I
I/P
¾
¾
¾
Address inputs
Data inputs/outputs
Chip enable
Output enable/program voltage supply
No connection
Positive power supply
Negative power supply, ground
Description
Absolute Maximum Ratings
Operation Temperature Commercial ..........................................................................................................0°C to +70°C
Storage Temperature.............................................................................................................................-65°C to 125
°C
Applied VCC Voltage with Respect to VSS ................................................................................................-0.6V to 7.0V
Applied Voltage on Input Pin with Respect to VSS .....................................................................................-0.6V to 7.0V
Applied Voltage on Output Pin with Respect to VSS .........................................................................
-0.6V
to V
CC
+0.5V
Applied Voltage on A9 Pin with Respect to VSS ......................................................................................
-0.6V
to 13.5V
Applied VPP Voltage with Respect to VSS...............................................................................................-0.6V to 13.5V
Applied READ Voltage (Functionality is guaranteed between these limits) ..............................................+4.5V to +5.5V
Note: These are stress ratings only. Stresses exceeding the range specified under
²Absolute
Maximum Ratings² 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 reliabil-
ity.
Rev. 1.40
2
December 8, 2003
HOLTEK [ HOLTEK SEMICONDUCTOR INC ]
