The W26010A is a high-speed, low-power CMOS static RAM organized as 65,536 × 16 bits that
operates on a single 5-volt power supply. This device is manufactured using Winbond's high
performance CMOS technology.
The W26010A has an active low chip select, separate upper and lower byte selects, and a fast output
enable. No clock or refreshing is required. Separate byte select controls (#LB and #UB) allow individual
bytes to be written and read. #LB controls I/O1-I/O8, the lower byte. #UB controls I/O9−I/O16, the
upper byte. This device is well suited for use in high-density, high-speed system applications.
L H H X X Output Disable High Z High Z IDD
L L H L L 2 Bytes Read DOUTDOUTIDD
L L H L H Lower Byte Read DOUTHigh Z IDD
L L H H L Upper Byte Read High Z DOUTIDD
L X L L L 2 Bytes Write DINDINIDD
L X L L H Lower Byte Write DINHigh Z IDD
L X L H L Upper Byte Write High Z DINIDD
L X X H H Output Disable High Z High Z IDD
MODE
I/O1−I/O8 I/O9−I/O16
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 1.5 W
VDD CURRENT
Storage Temperature -65 to +150
Operating Temperature 0 to +70
I -40 to 85
Note: Exposure to conditions beyond those listed under Absolute Maximum Ratings may adversely affect the life and reliability
of the device.
°C
°C
Operating Characteristics
(VDD = 5V ±10%, VSS = 0V, TA = 0 to 70° C, I for –40 to 85° C)
PARAMETER SYM.
Input Low Voltage VIL- -0.5 - +0.8 V
Input High Voltage VIH- +2.2 - VDD +0.5
Input Leakage Current ILIVIN = VSS to VDD-10 - +10
Output Leakage Current ILOVI/O = VSS to VDD
Output Low Voltage VOLIOL = +8.0 mA - - 0.4 V
Output High Voltage VOHIOH = -4.0 mA 2.4 - - V
- 2 -
TEST CONDITIONS MIN. TYP. MAX. UNIT
-10 - +10
Output Pins in High Z
See Truth Table
V
µA
µA
Page 3
Operating Characteristics, continued
W26010A
PARAMETER SYM.
Operating Power IDD #CS = VIL (max.), 15
Supply Current
Duty = 100% 25
Standby Power
Supply Current
ISB1 #CS = VDD -0.2V, I/O = open
Note: Typical characteristics are evaluated at VDD = 5V, TA = 25° C.
Note: These parameters are sampled but not 100% tested.
AC CHARACTERISTICS
AC Test Conditions
PARAMETER CONDITIONS
Input Pulse Levels 0V to 3V
Input Rise and Fall Times 3 nS
Input and Output Timing Reference Level 1.5V
Output Load CL = 30 pF, IOH/IOL = -4 mA/8 mA
Publication Release Date: May 2001
- 3 - Revision A5
Page 4
AC Test Loads and Waveform
W26010A
5V
OUTPUT
(VDD = 5V ±10%, VSS = 0V, TA = 0 to 70° C, I for –40 to 85° C)
R1 480 ohm
30 pF
Including
Jig and
Scope
R2
255 ohm
3.0V
0V
3 nS
Read Cycle
PARAMETER SYM.
Read Cycle Time TRC 15
Address Access Time TAA
Chip Select Access Time TACS
Output Enable to Output Valid
#UB, #LB Access Time TBA
Output Hold from Address Change TOH
Chip Select to Output in Low Z TCLZ* 3
Chip Deselect to Output in High Z TCHZ*
Output Enable to Output in Low Z TOLZ* 0
Output Disable to Output in High Z TOHZ*
#UB, #LB Select to Output in Low Z
#UB, #LB Deselect to Output in High Z TBHZ*
∗ These parameters are sampled but not 100% tested.
MIN. MAX. MIN. MAX. MIN. MAX.
TAOE
TBLZ
5V
OUTPUT
(
T
For
CLZ,
90%90%
10%
10%
3 nS
W26010A-15 W26010A-20 W26010A-25
−
15
−
15
−
−
−
3
7
7
−
−
−
7
−
−
*
0
−
7
−
7
R1 480 ohm
5 pF
Including
Jig and
Scope
T
OLZ,
T
CHZ,
T
BHZ,
OHZ,
T
T
BLZ,
20 - 25 - nS
−
−
−
−
3
3
−
0
−
0
−
20
20
10
10
−
−
10
−
10
−
10
−
−
−
−
3
3
−
0
−
0
−
R2
255 ohm
T
T
WHZ,
OW
)
UNIT
25 nS
25 nS
12 nS
12 nS
−
−
nS
nS
12 nS
−
nS
12 nS
−
nS
12 nS
- 4 -
Page 5
AC Characteristics, continued
Write Cycle
PARAMETER SYM. W26010A-15 W26010A-20 W26010A-25 UNIT
W26010A
MIN. MAX. MIN. MAX. MIN. MAX.
Write Cycle Time TWC15
Chip Select to End of Write TCW13
Address Valid to End of Write TAW13
Address Setup Time TAS0
#UB, #LB Select to End of Write TBW13
Write Pulse Width TWP10
Write Recovery Time #CS, #WE TWR0
Data Valid to End of Write TDW9
Data Hold from End of Write TDH0
Write to Output in High Z TWHZ*
−
End of Write to Output Active TOW*0
∗ These parameters are sampled but not 100% tested.
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.
T
WR
T
OH
T
OW
T
DW
DH
T
(2)(3)
Publication Release Date: May 2001
- 7 - Revision A5
Page 8
ORDERING INFORMATION
W26010A
PART NO. ACCESS
TIME
W26010AJ-15 15 260 10 0 to 70 44-pin 400 mil SOJ
W26010AJ-15I 15 260 10 -40 to 85 44-pin 400 mil SOJ
W26010AJ-20 20 220 10 0 to 70 44-pin 400 mil SOJ
W26010AJ-25 25 200 10 0 to 70 44-pin 400 mil SOJ
W26010AT-15 15 260 10 0 to 70 44-pin type two TSOP
W26010AT-15I 15 260 10 -40 to 85 44-pin type two TSOP
W26010AT-20 20 220 10 0 to 70 44-pin type two TSOP
W26010AT-25 25 200 10 0 to 70 44-pin type two TSOP
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.
(nS)
OPERATING
CURRENT
MAX. (mA)
STANDBY
CURRENT
MAX. (mA)
OPERATING
TEMP.
(ºC)
PACKAGE
- 8 -
Page 9
PACKAGE DIMENSIONS
44-pin Small Outline Band
W26010A
44
1
s
Seating Plane
D
b
b
1
23
E
H
E
22
A
A2
e
A
1
y
44-pin Standard Type Two TSOP
D
D
H
e
M
0.10 (0.004)
Dimension in inches
Symbol
Min. Nom.
A
A
A
b
b
0.1380.128
0.025
1
0.110 0.115
0.105
2
0.026
0.028
1
0.015
c
1.125 1.130
1.120
D
0.395
E
e
0.044 0.050
1
e
E
H
c
L
θ
e
1
L
S
y
θ
0.37
0.435 0.440
0.082
0
Dimension in mm
Min.
Max.
0.148
0.635
2.41
0.66 0.711 0.813
0.032
0.381
0.020
0.178
0.0130.007
28.45
10.03
0.4050.400
1.12
0.056
0.445
11.05
2.06
0.045
0.004
10
0
Max.Nom.
3.759
3.5853.251
2.54 2.67
0.508
0.330
28.70
28.58
10.16
10.29
1.42
1.27
9.40
11.18 11.30
1.14
0.10
10
Y
A
A
2
A
1
E
1
L
L
b
θ
c
Symbol
A
A
A
b
c
D
E
HD
e
L
L
Y
θ
1
2
1
Dimension in inches
Min. Nom.
0.002
0.010 0.014 0.018
0.005 0.006 0.007
0.721 0.725 0.729
0.396 0.400 0.404
0.455 0.463 0.471
0.016 0.020 0.024
Max.
0.047
0.0410.0390.037
0.031
0.031
0.004
o
Dimension in mm
Min. Nom. Max.
0.05
0.95
0.25
0.12
18.31
18.41 18.51
10.06
10.16 10.26
11.56
11.76 11.96
0.40
o
o
0505
1.20
1.051.00
0.35 0.45
0.15 0.17
0.80
0.60
0.50
0.80
0.10
o
Publication Release Date: May 2001
- 9 - Revision A5
Page 10
W26010A
VERSION HISTORY
VERSION DATE PAGE DESCRIPTION
A1 Apr. 1995 Initial Issued
A2 Feb. 1997 1, 9 Add package type two TSOP
A3 Oct. 1997 9 Correct 44-pin type two TSOP symbol "e" dimension
A4 Feb. 1998 1 Modify the address sequence in pin configuration
6 Modify the waveform "read cycle 3"
A5 May 2001 2, 4, 8 Add in Industrial operating temperature
4, 5, 8 Add in Industrial grade type
in inches nom. from 0.006 to 0.031
in mm nom. from 0.15 to 0.80
Winbond Electronics (H.K.) Ltd.
Headquarters
Headquarters
No. 4, Creation Rd. III,
No. 4, Creation Rd. III,
Science-Based Industrial Park,