PDM41028 Datasheet, PDF (2/8 Pages) List of Unclassifed Manufacturers – 1 Megabit Static RAM 256K x 4-Bit

Pin Configuration
SOJ
A7 1
A8 2
A9 3
A10 4
A11 5
A12 6
A13 7
A14 8
A15 9
A16 10
A17 11
CE 12
OE ¹³
Vss ¹⁴
28 ^Vcc
27 ^A6
26 A5
25 A4
24 A3
23 A2
22 A1
21 A0
20 NC
19 I/O3
18 I/O2
17 I/O1
16 I/O0
15 WE
PDM41028
Pin Description
Name
A17-A0
I/O3-I/O0
OE
WE
CE
NC
V_CC
V_SS
Description
Address Inputs
Data Inputs/Outputs
Output Enable Input
Write Enable Input
Chip Enable Input
No Connect
Power (+5V)
Ground
Truth Table⁽¹⁾
OE
WE CE
I/O
MODE
X
X
H
Hi-Z
Standby
L
H
L
D_OUT
Read
X
L
L
D_IN
Write
H
H
L
Hi-Z
Output Disable
NOTE: 1. H = V_IH, L = V_IL, X = DON’T CARE
Absolute Maximum Ratings ⁽¹⁾
Symbol Rating
V_TERM
T_BIAS
T_STG
P_T
I_OUT
T_j
Terminal Voltage with Respect to V_SS
Temperature Under Bias
Storage Temperature
Power Dissipation
DC Output Current
Maximum Junction Temperature ⁽²⁾
Com’l.
–0.5 to +7.0
–55 to +125
–55 to +125
1.0
50
125
Ind.
Unit
–0.5 to +7.0
V
–65 to +135
°C
–65 to +150
°C
1.0
W
50
mA
145
°C
NOTE: 1. Stresses greater than those listed under ABSOLUTE MAXIMUM RATINGS may cause
permanent damage to the device. This is a stress rating only and functional operation of
the device at these or any other conditions above those indicated in the operational
sections of this specification is not implied. Exposure to absolute maximum rating
conditions for extended periods may affect reliability.
2. Appropriate thermal calculations should be performed in all cases and specifically for
those where the chosen package has a large thermal resistance (e.g., TSOP). The cal-
culation should be of the form: T_j = T_a + P * θ_ja where T_a is the ambient temperature, P
is average operating power and θ_ja the thermal resistance of the package. For this
product, use the following θ_ja values:
SOJ: 76^o C/W
TSOP: 100^o C/W
2
Rev. 2.2 - 4/29/98