T15L256A Datasheet, PDF (1/10 Pages) Taiwan Memory Technology – 32K X 8 LOW POWER CMOS STATIC RAM

tm TE
CH
SRAM
T15L256A
32K X 8 LOW POWER
CMOS STATIC RAM
FEATURES
• Access time: 35ns/70ns
• Low power consumption : Active 200 mW(typ.)
• Low operating current : 50mA
• Single + 3.3V power supply
• Fully static operation – No clock or refreshing
required
• All inputs and outputs directly LVTTL compatible
• Common I/O capability
• Available packages : 28-pin 300 mil SOJ, 28-pin
SOP, TSOP-I (forward type ).
• Output enable (OE ) available for very fast access
GENERAL DESCRIPTION
The T15L256A is a high speed, low power
CMOS static RAM organized as 32,768 x 8 bits that
operates on a single 3.3-volt power supply. This
device is packaged in standard 28-pin 300 mil SOJ ,
28-pin SOP, TSOP-I forward.
BLOCK DIAGRAM
Vcc →
Vss →
A0 →
.
.
DECODER
.
A14 →
CORE
ARRAY
PIN CONFIGURATION
A14 1
A12 2
A7 3
28 Vcc
27 WE
26 A13
CS →
OE → _CONTROL
WE →
← I / O1
.
DATA I/O
.
← I / O8
A6 4
25 A8
A5 5
A4 6
A3 7
SOJ
&
24 A9
23 A11
22 OE
PIN DESCRIPTION
A2 8
A1 9
A0 10
I/O1 11
I/O2 12
SOP
21 A10
20 CS
19 I/O8
18 I/O7
17 I/O6
SYMBOL
A0 - A14
I/O1 - I/O8
CS
DESCRIPTION
Address Inputs
Data Inputs/Outputs
Chip Select Inputs
I/O3 13
Vss 14
16 I/O5
15 I/O4
WE
Write Enable
OE
Output Enable
Vcc
Power Supply
OE
1
A11
2
28
A10 Vss
27
CS
Ground
A9
3
26
I/O8
A8
4
25
I/O7
A13
5
WE
6
VCC
7
A14
8
A12
9
A7
10
A6
11
A5
12
A4
13
A3
14
TSOP-I
24
I/O6
23 I/O5 _{PART NUMBER EXAMPLES}
22
I/O4
21
VSS
PACKAGE SPEED
20 I/O3 _T15L256A-35J
SOJ
35ns
19
18
I/O2
I/O1
T15L256A-70P
TSOP-I
70ns
17 A0 T15L256A-70D
SOP
70ns
16
A1
15
A2
Taiwan Memory Technology, Inc. reserves the right P. 1
to change products or specifications without notice.
Publication Date: APR. 2001
Revision:C