The W24129A is a high-speed, low-power CMOS static RAM organized as 16384 × 8 bits that
operates on a single 5-volt power supply. This device is manufactured using Winbond's high
performance CMOS technology.
PARAMETERRATINGUNIT
Supply Voltage to VSS Potential-0.5 to +7.0V
Input/Output to VSS Potential-0.5 to VDD +0.5V
Allowable Power Dissipation1.0W
Storage Temperature-65 to +150
Operating Temperature0 to +70
Note: Exposure to conditions beyond those listed under Absolute Maximum Ratings may adversely affect the life and reliability of the
device.
Note: These parameters are sampled but not 100% tested.
AC TEST CONDITIONS
PARAMETERCONDITIONS
Input Pulse Levels0V to 3V
Input Rise and Fall Times5 nS
Input and Output Timing Reference Level1.5V
Output LoadCL = 30 pF, IOH/IOL = -4 mA/8 mA
AC TEST LOADS AND WAVEFORM
5V
OUTPUT
R1 480 ohm
30 pF
Including
Jig and
Scope
R2
255 ohm
3.0V
0V
5 nS
90%90%
10%
10%
OUTPUT
(For T
5 nS
5V
CLZ
T
OLZTCHZ
,
R1 480 ohm
5 pF
Including
Jig and
Scope
OHZ
,,
T
,
T
WHZ
R2
255 ohm
,
)
TOW
Publication Release Date: July 1995
- 3 - Revision A2
Page 4
W24129A
CS, WE
AC CHARACTERISTICS
(VDD = 5V ±5%, VSS = 0V, TA = 0 to 70° C)
Read Cycle
PARAMETERSYM.W24129A-12W24129A-15UNIT
MIN.MAX.MIN.MAX.
Read Cycle TimeTRC12-15-nS
Address Access TimeTAA-12-15nS
Chip Select Access TimeTACS-12-15nS
Output Enable to Output ValidTAOE-6-7nS
Chip Selection to Output in Low Z
Output Enable to Output in Low Z
Chip Deselection to Output in High Z
Output Disable to Output in High Z
Output Hold from Address ChangeTOH3-3-nS
TCLZ
TOLZ
TCHZ
TOHZ
∗
∗
∗
∗
3-3-nS
0-0-nS
-6-7nS
-6-7nS
∗ These parameters are sampled but not 100% tested.
Write Cycle
PARAMETERSYM.W24129A-12W24129A-15UNIT
MIN.MAX.MIN.MAX.
Write Cycle TimeTWC12-15-nS
Chip Selection to End of WriteTCW10-13-nS
Address Valid to End of WriteTAW10-13-nS
Address Setup TimeTAS0-0-nS
Write Pulse WidthTWP10-10-nS
Write Recovery Time
Data Valid to End of WriteTDW7-9-nS
Data Hold from End of WriteTDH0-0-nS
Write to Output in High Z
Output Disable to Output in High Z
Output Active from End of WriteTOW0-0-nS
∗These parameters are sampled but not 100% tested.
TWR0-0-nS
∗
TWHZ
TOHZ
∗
-7-8nS
-7-8nS
- 4 -
Page 5
TIMING WAVEFORMS
AA
Read Cycle 1
(Address Controlled)
Address
DOUT
Read Cycle 2
(Chip Select Controlled)
CS
W24129A
T
RC
T
T
OH
T
OH
D
OUT
Read Cycle 3
(Output Enable Controlled)
Address
OE
CS
D
OUT
T
ACS
T
CLZ
RC
T
T
AA
AOE
T
TOLZ
TACS
CLZT
T
CHZ
TOH
TOHZ
CHZ
T
Publication Release Date: July 1995
- 5 - Revision A2
Page 6
Timing Waveforms, continued
Write Cycle 1
(OE Clock)
Address
OE
CS
WE
DOUT
DIN
TAS
W24129A
WC
T
WR
T
CW
T
AW
T
WP
T
OHZ
T
(1,4)
DW
T
DH
T
Write Cycle 2
(OE = VIL Fixed)
T
WC
Address
T
T
CW
CS
AWT
WE
D
OUT
DIN
T
AS
T
WP
T
WHZ
(1,4)
Notes:
1. During this period, I/O pins are in the output state, so input signals of opposite phase to the outputs should not be applied.
2. The data output from DOUT are the same as the data written to DIN during the write cycle.
3. DOUT provides the read data for the next address.
4. Transition is measured ±500 mV from steady state with CL = 5 pF. This parameter is guaranteed but not 100% tested.
WR
T
OH
T
OW
DW
TDH
T
(2)(3)
- 6 -
Page 7
ORDERING INFORMATION
W24129A
PART NO.ACCESS
TIME (nS)
W24129AK-12121605300 mil skinny DIP
W24129AK-15151505300 mil skinny DIP
W24129AJ-12121605300 mil SOJ
W24129AJ-15151505300 mil SOJ
Notes:
1. Winbond reserves the right to make changes to its products without prior notice.
2. Purchasers are responsible for performing appropriate quality assurance testing on products intended for use in
applications where personal injury might occur as a consequence of product failure.
OPERATING
CURRENT
MAX. (mA)
STANDBY
CURRENT
MAX. (mA)
PACKAGE
Publication Release Date: July 1995
- 7 - Revision A2
Page 8
PACKAGE DIMENSIONS
28-pin P-DIP Skinny
28
E
1
114
S
2
A
A
L
D
B
e
B
1
1
15
Base Plane
A
1
Mounting Plane
W24129A
Dimension in Inches Dimension in mm
Symbol
A
A
A
B
B
c
D
E
E
e
L
a
e
S
Notes:
1. Dimension D Max. & S include mold flash or
tie bar burrs.
2. Dimension E1 does not include interlead flash.
E
e
a
c
A
3. Dimension D & E1 include mold mismatch and
are determined at the mold parting line.
4. Dimension B1 does not include dambar
protrusion/intrusion.
5. Controlling dimension: Inches.
6. General appearance spec. should be based on
final visual inspection spec.
Min.
0.010
1
0.125
2
0.016
1
0.008
1
1
0.120
°
0
A
Nom.
Max.Max.
0.175
0.130
0.135
0.018
0.022
0.0601.52
0.0640.058
0.010
0.014
1.388 1.400
0.3100.3000.320
0.293
0.2880.283
0.110
0.130
0.140
0.370
0.3500.3308.38 8.89
0.055
Nom.
Min.
0.25
3.18
3.30
0.41
0.46
0.20
0.25
35.26
7.62
2.29 2.54 2.790.090 0.100
3.05
3.30
°
°
15
0
4.45
3.43
0.56
1.631.47
0.36
35.56
8.13
7.87
7.447.327.19
3.56
°
15
9.40
1.40
28-pin Small Outline J Band
1
D
s
Seating Plane
b
1b
e
Dimension in Inches Dimension in mm
Symbol
Min. Nom. Max.Max.Nom.Min.
A
0.027
1
A
0.095
A
2
0.026
1
b
0.016
1528
EHE
14
b
0.008
c
D
0.295
E
0.044
e
1
e
E
H
0.077
L
S
y
θ
Notes:
1. Dimension D Max. & S include mold flash
or tie bar burrs.
2. Dimension b does not include dambar
2
A
A
L
1
A
y
£c
c
1e
protrusion/intrusion.
3. Dimension D & E include mold mismatch
and are determined at the mold parting line.
4. Controlling dimension: Inches.
5. General appearance spec. should be based
on final visual inspection spec.