Winbond Electronics W2465AK-20, W2465AK-15, W2465AK-12, W2465AJ-20, W2465AJ-15 Datasheet
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W2465A
CS1
Chip Select Inputs
WE
Write Enable Input
OE
Output Enable Input
8K × 8 HIGH-SPEED CMOS STATIC RAM
GENERAL DESCRIPTION
The W2465A is a high-speed, low-power CMOS static RAM organized as 8192 × 8 bits that operates
on a single 5-volt power supply. This device is manufactured using Winbond's high performance
CMOS technology.
FEATURES
• High-speed access time: 12/15/20 nS (max.)
• Low-power consumption:
− Active: 400mW (typ.)
• Single +5V power supply
• Fully static operation
PIN CONFIGURATION
NC
A12
A7
A6
A5
A4
A3
A2
A1
A0
I/O1
I/O2
I/O3
V
SS
1
2
3
4
5
6
7
8
9 20
10
11
12
13
14
28
V
DD
27
WE
26
CS2
A8
25
A9
24
A11
23
22
OE
A10
21
CS1
I/O8
19
I/O7
18
I/O6
17
16
I/O5
I/O4
15
• All inputs and outputs directly TTL compatible
• Three-state outputs
• Available packages: 28-pin 300 mil SOJ and
skinny DIP
BLOCK DIAGRAM
V
DD
V
SS
A0
.
A12
CS2
CS1
WE
OE
DECODER
.
CONTROL
CORE
C O RE
ARRAY
DATA I/O
I/O1
I/O8
.
.
PIN DESCRIPTION
SYMBOL DESCRIPTION
A0−A12
I/O1−I/O8
, CS2
Address Inputs
Data Inputs/Outputs
VDD Power Supply
VSS Ground
NC No Connection
Publication Release Date: October 1995
- 1 - Revision A6
W2465A
CS1
CS1
CS1
CS1
DC CHARACTERISTICS
Absolute Maximum Ratings
PARAMETER RATING UNIT
Supply Voltage to VSS Potential -0.5 to +7.0 V
Input/Output to VSS Potential -0.5 to VDD +0.5 V
Allowable Power Dissipation 1.0 W
Storage Temperature -65 to +150
Operating Temperature 0 to +70
Note: Exposure to conditions beyond those listed under Absolute Maximum Ratings may adversely affect the life and reliability of the
device.
TRUTH TABLE
CS1 CS2 OE WE MODE
H X X X Not Selected High Z ISB, ISB1
X L X X Not Selected High Z ISB, ISB1
L H H H Output Disable High Z IDD
L H L H Read Data Out IDD
L H X L Write Data In IDD
I/O1−I/O8
°C
°C
VDD CURRENT
OPERATING CHARACTERISTICS
(VDD = 5V ±10%, VSS = 0V, TA = 0 to 70° C)
PARAMETER SYM. TEST CONDITIONS MIN. TYP. MAX. UNIT
Input Low Voltage VIL - -0.5 - +0.8 V
Input High Voltage VIH - +2.2 - VDD +0.5 V
Input Leakage Current ILI VIN = VSS to VDD -10 - +10
Output Leakage
Current
Output Low Voltage VOL IOL = +8.0 mA - - 0.4 V
Output High Voltage VOH IOH = -4.0 mA 2.4 - - V
Operating Power
Supply Current
Standby Power
Supply
Note: Typical characteristics are at VDD = 5V, TA = 25° C.
Current
ILO VI/O = VSS to VDD,
= VIH or CS2 = VIL
or OE = VIH or WE = VIL
IDD
= VIL
CS2 = VIH
I/O = 0 mA
Cycle = MIN
Duty = 100% 20 - - 120 mA
ISB
= VIH or CS2 = VIL
Cycle = MIN
Duty = 100%
ISB1
≥ VDD -0.2V
or CS2 ≤ 0.2V
-10 - +10
12 - - 180 mA
15 - - 150 mA
- - 30 mA
- - 5 mA
µA
µA
- 2 -
W2465A
CAPACITANCE
(VDD = 5V, TA = 25° C, f = 1 MHz)
PARAMETER SYM. CONDITIONS MAX. UNIT
Input Capacitance CIN VIN = 0V 8 pF
Input/Output Capacitance CI/O VOUT = 0V 10 pF
Note: These parameters are sampled but not 100% tested.
AC TEST CONDITIONS
PARAMETER CONDITIONS
Input Pulse Levels 0V to 3V
Input Rise and Fall Times 5 nS
Input and Output Timing Reference Level 1.5V
Output Load CL = 30 pF, IOH/IOL = -4 mA/8 mA
AC TEST LOADS AND WAVEFORM
R1 480 ohm
5V
OUTPUT
30 pF
Including
Jig and
Scope
R2
255 ohm
3.0V
0V
5 nS
10%
5V
OUTPUT
(For T T T T
CLZ1,
CLZ2, OLZ,
90% 90%
10%
5 nS
R1 480 ohm
5 pF
Including
Jig and
Scope
T
CHZ1,
CHZ2, OHZ,
R2
255 ohm
T T T
WHZ,
OW
)
Publication Release Date: October 1995
- 3 - Revision A6
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