Datasheet M48Z35AY, M48Z35AV Datasheet (SGS Thomson Microelectronics)

Page 1
M48Z35AY M48Z35AV
256 Kbit (32Kb x 8) ZEROP OWER® SRAM
INTEGRATED ULTRA LOW POWER SRAM,
POWER-FAIL CONTROL CIRCUIT and BATTERY
READ CYCLE TIME EQUALS WRITE CYCLE
TIME
BATTERY LOW FLAG (BOK)
AUTOMATIC POWER-FAIL CHIP DESELECT
and WRITE PROTECTION
WRITE PROTECT VOLTAGES
= Power-fail Deselect Voltage):
(V
PFD
– M48Z35AY: 4.20V V – M48Z35AV: 2.7V ≤ V
SELF-CONTAINED BATTERY in the CAPHAT
PFD
PFD
4.50V
3.0V
DIP PACKAGE
PACKAGING INCLUDES a 28-LEAD SOIC and
SNAPHAT
®
TOP
(to be Ordered Separately)
SOIC PACKAGE PROVIDES D IREC T
CONNECTION for a SNAPHAT TOP which CONTAINS the BATTERY and CRYSTAL
PIN and FUNCTION COMPATIBLE with
JEDEC STANDARD 32K x8 SRAMs
SNAPHAT (SH)
Battery
28
28
1
SOH28 (MH)
Figure 1. Logic Diagram
V
CC
1
PCDIP28 (PC)
Battery CAPHAT
DESCRIPTION
®
The M48Z35AY/35AV ZEROP OWER
RAM is a 32 Kbit x8 non-volatile static RAM that integrates power-fail deselect circuitry and battery control logic on a single die. The monolithi c chip is avail­able in two special packages to provide a highly in­tegrated battery backed-up memory solution.
Table 1. Signal Names
A0-A14 Address Inputs DQ0-DQ7 Data Inputs / Outputs E G W V V
CC
SS
Chip Enable Output Enable Write Enable Supply Voltage Ground
A0-A14
W
15
M48Z35AY M48Z35AV
E
G
V
SS
8
DQ0-DQ7
AI02781B
1/16April 2000
Page 2
M48Z35AY, M48Z35AV
Figure 2A. DIP Pin Connections
A14 V
1
A12
2 3
A7
4
A6
5
A5
6
A4
7
A3 A2 A1 A0
DQ0
M48Z35AY M48Z35AV
8 9 10 11 12 13
DQ2
14
SS
Table 2. Absolute Maximum Ratings
Symbol Parameter Value Unit
T
A
T
STG
(2)
T
SLD
V
IO
V
CC
I
O
P
D
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 a ny other conditions above those indicat ed in the operational section of this spec ification is not im plied. Exposure t o the abso lute max imum rat ing cond itions for extende d period s of tim e may affe ct reliability.
2. Soldering temperature not to exceed 260°C for 10 seconds (total thermal budget not to exceed 150°C for longer than 30 seconds).
CAUTION: Negative undershoots below –0.3V are not allowed on any pin whil e i n th e Battery Back-up mode. CAUTION: Do NOT wave solder SOIC to avoid damaging SNAPHAT sockets.
Ambient Operating Temperature Grade 1
Storage Temperature (VCC Off) SNAPHAT
Lead Solder Temperature for 10 seconds 260 °C Input or Output Voltages –0.3 to 7 V
Supply Voltage –0.3 to 7 V Output Current 20 mA Power Dissipation 1 W
28 27 26 25 24 23 22 21 20 19 18 17 16 15
AI02782B
CC
W A13 A8 A9 A11 G A10 E DQ7 DQ6 DQ5DQ1 DQ4 DQ3V
(1)
Grade 6
SOIC
Figure 2B. SOIC Pin Connections
A14 V A12
A7 A6 A5 A4 A3 A2 A1 A0
DQ0
1 2 3 4 5 6 7
M48Z35AY M48Z35AV
8 9 10 11 12
DQ2
SS
13 14
0 to 70
–40 to 85 –40 to 85
–55 to 125
28 27 26 25 24 23 22 21 20 19 18 17 16 15
AI02783
CC
W A13 A8 A9 A11 G A10 E DQ7 DQ6 DQ5DQ1 DQ4 DQ3V
°C
°C
2/16
Page 3
M48Z35AY, M48Z35AV
V
PFD
V
CC
or
SO
(1)
(min)
(2)
E G W DQ0-DQ7 Power
V
IH
V
IL
V
IL
V
IL
X X X High Z CMOS Standby X X X High Z Battery Back-up Mode
Table 3. Operating Modes
Mode
Deselect Write Read Read
Deselect Deselect
Note: 1. X = VIH or VIL; VSO = Battery Back-up Swit ch ov er Volta ge.
2. See T able 7 for deta ils .
4.5V to 5.5V
3.0V to 3.6V
V
to V
SO
Figure 3. Block Diagram
LITHIUM
CELL
VOLTAGE SENSE
AND
SWITCHING
CIRCUITRY
X X High Z Standby X
V
IL
V
IH
POWER
V
PFD
V
IL
V
IH
V
IH
32K x 8
SRAM ARRAY
D
IN
D
OUT
High Z Active
Active Active
A0-A14
DQ0-DQ7
E
W
V
CC
The M48Z35AY/35AV is a non-volatile pin and function equivalent to any JEDEC standard 32K x8 SRAM. It also easily fits into many ROM, EPROM, and EEPROM sockets, providing the non-volatility of PROMs without any requirement for special write timing or limitations on the number o f writes that can be performed. The 28 pin 600mil DIP
CAPHAT™ houses the M48Z35AY/35AV silicon with a long life lithium button cell in a single pa ck­age.
G
V
SS
AI01619B
The 28 pin 330mil SOIC provides sockets with gold plated contacts at both ends for direct con­nection to a separate SNAPHAT housing cont ain­ing the battery. The unique design allows the SNAPHAT battery p acka ge t o b e m ount ed o n t op of the SOIC package after the c ompletion of the surface mount process. Insertion of the SNAPHAT housing after reflow prevents potential battery damage due to the high temperatures required for device surface-mounting. The SNAPH AT housing is keyed to prevent reverse insertion.
3/16
Page 4
M48Z35AY, M48Z35AV
Table 4. AC Measurement Conditions
Input Rise and Fall Times 5ns Input Pulse Voltages 0 to 3V Input and Output Timing Ref. Voltages 1.5V
Note that Output Hi-Z is defined as the point where data is no longer driven.
The SOIC and battery packages are shipped sep­arately in plastic anti-static tubes or in Tape & Reel form.
For the 28 lead SOIC, the battery package (i.e. SNAPHAT) part number is "M4Z28-BR00SH1".
The M48Z35AY/35AV also has its own Power-fail Detect circuit. The control circuitry constantly mon­itors the single 5V supply for an out of tolerance condition. When V
is out of tolerance, the circuit
CC
write protects the S RAM, p roviding a high degree of data security in the midst of unpredictable s ys­tem operation brought on by low V
CC
. As V
CC
falls below approximately 3V, the control circuitry con­nects the battery which maintains data until valid power returns.
READ MODE
The M48Z35AY/35AV i s in th e Read M ode when­ever W
(Write Enable) is high, E (Ch ip Enable) is low. The device architecture allows ripple-through access of data from eight of 264,144 locat ions in the static storage array. Thus, the unique address specified by the 15 Address Inputs defines which one of the 32,768 bytes of data is to be accessed. Valid data will be available at the Data I/O pins within Address Access time (t
) after the last
AVQV
address input signal is stable, providing that the E and G access times are also satisfied. If the E and G
access times are not met, valid data will be available after the latter of the Chip Enable Access time (t (t
GLQV
) or Output Enable Access time
ELQV
).
The state of the eight three-s tate Da ta I/O si gnals is controlled by E
and G. If the outputs are activat-
Figure 4. AC Testing Load Circuit
DEVICE UNDER
TEST
CL includes JIG capacitance
ed before t
, the data lines will be driven to an
AVQV
indeterminate state until t puts are changed while E
645
CL = 100pF or 5pF
. If the Ad dres s In-
AVQV
and G remain active,
1.75V
AI03211
output dat a will rem ain v alid for Outp ut Dat a Hold time (t
) but will go indeterminate until the next
AXQX
Addr e ss Access.
WRITE MODE
The M48Z35AY/35A V is in the Write Mode when­ever W enced from the latter occurring falling edge of W E of W throughout the cycle. E a minimum of t
and E are low. The start of a write is refer-
or
. A write is terminated by the earlier rising edge
or E. The addresses must be held valid
or W must return high for
from Chip Enable or t
EHAX
WHAX
from Write Enable prior to the initiation of another read or write cycle. Data-in must be valid t prior to the end of write and remain valid for t
DVWH WHDX
afterward. G should be kept hig h during write cy­cles to avoid bus contention; although, if the output bus has been activated by a low on E
will disable the outputs t
on W
WLQZ
and G, a low
after W falls.
4/16
Page 5
M48Z35AY, M48Z35AV
Table 5. Capacitance
(T
= 25 °C)
A
(1, 2)
Symbol Parameter Test Condition Min Max Unit
C
C
IO
Note: 1. Effective capacitan ce measured wi th power su pply at 5V.
2. Sampled only, not 100% tested.
3. Outputs deselect ed.
Input Capacitance
IN
(3)
Input / Output Capacitance
V
V
OUT
IN
= 0V
= 0V
10 pF 10 pF
Table 6. DC Characteristics
(T
= 0 to 70 °C or –40 to 85 °C; VCC = 4.5V to 5.5V or 3.0v to 3.6V)
A
Symbol Parameter Test Condition Min Max Unit
(1)
I
LI
I
LO
I
CC
I
CC1
I
CC2
V
IL
V
IH
V
OL
V
OH
Note: 1. Outputs deselected .
2. Negativ e s p i k e s of –1V allowed for up t o 10 ns once per cycle.
Input Leakage Current
(1)
Output Leakage Current Supply Current Outputs open 50 mA Supply Current (Standby) TTL
Supply Current (Standby) CMOS
(2)
Input Low Voltage –0.3 0.8 V Input High Voltage 2.2 Output Low Voltage
Output High Voltage
0V V
IN
0V V
OUT
E
= V
E
= VCC – 0.2V
I
= 2.1mA
OL
I
= –1mA
OH
V
V
IH
CC
CC
±1 µA ±5 µA
3mA 3mA
V
+ 0.3
CC
0.4 V
2.4 V
V
Table 7. Power Down/Up Trip Points DC Characteristics
(1)
(TA = 0 to 70 °C or –40 to 85 °C)
Symbol Parameter Min Typ Max Unit
V
PFD
V
PFD
V
SO
V
SO
t
DR
Note: 1. All voltages referenced to VSS.
2. At 25 ° C.
Power-fail Deselect Voltage (M48Z35AY) 4.2 4.35 4.5 V Power-fail Deselect Voltage (M48Z35AV) 2.7 2.9 3.0 V Battery Back-up Switchover Voltage (M48Z35AY) 3.0 V
V
Battery Back-up Switchover Voltage (M48Z35AV)
(2)
Expected Data Retention Time 10 YEARS
PFD
– 100mV
V
5/16
Page 6
M48Z35AY, M48Z35AV
Table 8. Power Down/Up AC Characteristics
(T
= 0 to 70 °C or –40 to 85 °C)
A
Symbol Parameter Min Max Unit
t
PD
t
F
t
FB
t
R
t
RB
t
REC
Note: 1. V
2. V
3. t
E or W at VIH before Power Down
(1)
V
(max) to V
PFD
(2)
V
(3)
PFD
es V
PFD
PFD
(min) = 20ms for industri al tempera ture grade (6) device.
REC
(min) to VSS VCC Fall Time
PFD
V
(min) to V
PFD
VSS to V V
PFD
(max) to V
(min).
(min) to VSS fall time of less than tFB may cause corruption of RA M data.
(min) VCC Rise Time
PFD
(max) to Inputs Recognized
(min) fall time of less than tF may result in deselection/write protection not occurring until 200µs after VCC pass-
PFD
(min) VCC Fall Time
PFD
(max) VCC Rise Time
PFD
Figure 5. Power Down/Up Mode AC Waveforms
V
CC
V
(max)
PFD
V
(min)
PFD
VSO
tF
tPD
INPUTS
tFB
tDR
tRB
DON'T CARE
0 µs
300 µs
10 µs 10 µs
s
40 200 ms
tR
tREC
RECOGNIZEDRECOGNIZED
6/16
OUTPUTS
VALID VALID
(PER CONTROL INPUT)
HIGH-Z
(PER CONTROL INPUT)
AI01168C
Page 7
Table 9. Read Mode AC Characteristics
(T
= 0 to 70 °C or –40 to 85 °C; VCC = 4.5V to 5.5V or 3.0V to 3.6V)
A
M48Z35AY M48Z35AV
M48Z35AY, M48Z35AV
Symbol Parameter
t
AVAV
t
AVQV
t
ELQV
t
GLQV
t
ELQX
t
GLQX
t
EHQZ
t
GHQZ
t
AXQX
Note: 1. CL = 100pF (see Figure 4).
2. C
Read Cycle Time 70 100 ns
(1)
Address Valid to Output Valid 70 100 ns
(1)
Chip Enable Low to Output Valid 70 100 ns
(1)
Output Enable Low to Output Valid 35 50 ns
(2)
Chip Enable Low to Output Transition 5 10 ns
(2)
Output Enable Low to Output Transition 5 5 ns
(2)
Chip Enable High to Output Hi-Z 25 50 ns
(2)
Output Enable High to Output Hi-Z 25 40 ns
(1)
Address Transition to Output Transition 10 10 ns
= 5pF (see Figure 4).
L
Figure 6. Read Mode AC Waveforms.
Unit-70 -100
Min Max Min Max
A0-A14
E
G
DQ0-DQ7
Note: Write Enable (W
) = High.
tAVAV VALID
tAVQV tAXQX
tELQV
tELQX
tGLQX
tGLQV
tGHQZ
VALID
tEHQZ
AI00925
7/16
Page 8
M48Z35AY, M48Z35AV
Table 10. Write Mode AC Characteristics
(T
= 0 to 70 °C or –40 to 85 °C; VCC = 4.5V to 5.5V or 3.0V to 3.6V)
A
M48Z35AY M48Z35AV
Symbol Parameter
t
AVAV
t
AVWL
t
AVEL
t
WLWH
t
ELEH
t
WHAX
t
EHAX
t
DVWH
t
DVEH
t
WHDX
t
EHDX
(1, 2)
t
WLQZ
t
AVWH
t
AVEH
(1, 2)
t
WHQX
Note: 1. CL = 5pF (see Figure 4).
2. If E
Write Cycle Time 70 100 ns Address Valid to Write Enable Low 0 0 ns Address Valid to Chip Enable Low 0 0 ns Write Enable Pulse Width 50 80 ns Chip Enable Low to Chip Enable High 55 80 ns Write Enable High to Address Transition 0 10 ns Chip Enable High to Address Transition 0 10 ns Input Valid to Write Enable High 30 50 ns Input Valid to Chip Enable High 30 50 ns Write Enable High to Input Transition 5 5 ns Chip Enable High to Input Transition 5 5 ns
Write Enable Low to Output Hi-Z 25 50 ns Address Valid to Write Enable High 60 80 ns
Address Valid to Chip Enable High 60 80 ns Write Enable High to Output Transition 5 10 ns
goes low simultaneously with W going low, the outputs rem ai n in the high impedance stat e.
Unit-70 -100
Min Max Min Max
DATA RETENTION MODE
With valid V
applied, the M48Z35AY/ 35AV op-
CC
erates as a conventional BYTEWIDE™ static RAM. Should the supply voltage decay, the RAM will automatically power-fail deselect, write pro­tecting itself when V
(min) window. All outputs become high im-
V
PFD
falls within the V
CC
PFD
(max),
pedance, and all inputs are treated as "don't care." Note: A power failure during a write cycle may
corrupt data at the currently a ddressed location, but does not jeopardize the rest of the RAM's con­tent. At voltages below V
(min), the user can be
PFD
assured the memory will be i n a write protected state, provided the V
fall time is not less than tF.
CC
The M48Z35AY/35AV may respond to transient noise spikes on V
8/16
that reach into the deselect
CC
window during the time the device is sampling
. Therefore, decoupling of the power supply
V
CC
lines is recommended. When V
drops below VSO, the control circuit
CC
switches power to the internal battery which pre­serves data. The internal button cell will maintain data in the M48Z35AY/35AV for an accumulated period of at least 10 years (at 25°C) when V less than V
As system power returns and V
, the battery is disconn ected, and the power
V
SO
supply is switched to external V tion continues until V t
(min). Normal RAM operation can resume
REC
after V
t
REC
.
SO
exceeds V
CC
reaches V
CC
PFD
CC
. Write protec-
CC
(max).
rises above
(min) plus
PFD
CC
is
Page 9
Figure 7. Write Enable Controlled, Write AC Waveform
tAVAV
M48Z35AY, M48Z35AV
A0-A14
tAVEL
E
tAVWL
W
tWLQZ
DQ0-DQ7
VALID
tAVWH
tWLWH
Figure 8. Chip Enable Controlled, Write AC Waveforms
tAVAV
tDVWH
tWHAX
tWHQX
tWHDX
DATA INPUT
AI00926
A0-A14
E
W
DQ0-DQ7
tAVEL
tAVWL
VALID
tAVEH
tELEH
DATA INPUT
tDVEH
tEHAX
tEHDX
AI00927
9/16
Page 10
M48Z35AY, M48Z35AV
Figure 9. Checking the BOK Flag Status
POWER-UP
READ DATA
AT ANY ADDRESS
WRITE DATA
COMPLEMENT BACK
TO SAME ADDRESS
READ DATA
AT SAME
ADDRESS AGAIN
IS DATA
COMPLEMENT
OF FIRST
(BATTERY OK)
WRITE ORIGINAL
DATA BACK TO
SAME ADDRESS
CONTINUE
READ?
YES
NO
(BATTERY LOW)
NOTIFY SYSTEM
OF LOW BATTERY
(DATA MAY BE CORRUPTED)
AI00607
Also, as VCC rises, the battery voltage is checked. If the voltage is less than approxima tely 2.5V, an internal Battery Not OK (BOK BOK
flag can be checked after power up. If the
BOK
flag is set, the first write at tempted will be
) flag will be set. The
blocked. The flag is automatically cleared after the first write, and normal RAM operation resumes. Figure 9 illustrates how a BOK
check routine could
be structured. For more information on Battery Storage Life refer
to the Application Note AN1012.
Figure 10. Supply Voltage Protection
V
CC
V
CC
0.1µF DEVICE
V
SS
AI02169
POWER SUPPLY DECOUPLING and UNDERSHOOT PROTECTION
I
transients, including those produced by output
CC
switching, can produce voltage fluctuations, re­sulting in spikes on the V
bus. These transients
CC
can be reduced if capacitors are used to store en­ergy, which stabilizes the V
bus. The energy
CC
stored in the bypass capacitors will be released as low going spikes are generated or energy will be absorbed when overshoots occur. A ceramic by-
pass capacitor value of 0.1µF (as shown in Figure
10) is recommended in order to provide the need­ed filtering.
In addition to transients that are caused by normal SRAM operation, power cycling can generate neg­ative voltage spikes on VCC that drive it to values below V
by as much as one Volt. These nega-
SS
tive spikes can cause data corruption in the SRAM while in battery backup mode. To protect from these voltage spikes, it is recommended to con­nect a schottky diode from V connected to V
, anode to VSS). Schottky diode
CC
to VSS (cathode
CC
1N5817 is recommended for through hole and MBRS120T3 is recommended for surface mount.
10/16
Page 11
M48Z35AY, M48Z35AV
Table 11. Ordering Information Scheme
Example: M48Z35AY -70 MH 1 TR
Supply Voltage and Write Protect Voltage
35AY = V 35AV = V
Speed
-70 = 70ns (M48Z35AY)
-100 = 100ns (M48Z35AV)
Package
PC = PCDIP28
(1)
MH
Temperature Range
1 = 0 to 70 °C
(2)
6
= –40 to 85 °C
Shipping Method for SOIC
blank = Tubes TR = Tape & Reel
= 4.5V to 5.5V; V
CC
= 3.0V to 3.6V; V
CC
= SOH28
= 4.2V to 4.5V
PFD
= 2.7V to 3.0V
PFD
Note: 1. The SOIC pa ck age (SOH28) requires the battery packa ge (SNAPHAT) which is orde red separat el y under the part n um ber
"M4Zxx-BR00SH1" in plastic tube or "M4Zxx-BR00SH1TR" in Tape & Reel form.
2. Industrial temperature grade available in SOIC package (SOH28) only.
Caution: Do not place t he SNAP HAT battery package " M4Z28-BR00SH1" i n con ductive foam s ince wi ll drain the lithium button-c ell bat tery.
For a list of available options (Speed, Pac kage, etc...) or for furthe r information on any aspect of this de­vice, please contact the STMicroelectronics Sales Office nearest to you.
Table 12. Revision History
Date Revision Details
September 1999 First Issue 04/20/00 SH and SH28 packages for 2-pin and 2-socket removed
11/16
Page 12
M48Z35AY, M48Z35AV
Table 13. PCDIP28 - 28 pin Plastic DIP, battery CAPHAT, Package Mechanical Data
Symb
Typ Min Max Typ Min Max
A 8.89 9.65 0.350 0.380 A1 0.38 0.7 6 0.015 0.030 A2 8.38 8.8 9 0.330 0.350
B 0.38 0.53 0.015 0.021 B1 1.14 1.7 8 0.045 0.070
C 0.20 0.3 1 0.008 0.012
D 39.37 39.88 1.550 1.570
E 17.83 18.34 0.702 0.722 e1 2.29 2.79 0.090 0.110 e3 29.72 36.32 1. 170 1.430 eA 15.24 16.00 0.600 0.630
L 3.05 3.8 1 0.120 0.150
N 28 28
mm inches
Figure 11. PCDIP28 - 28 pin Plastic DIP, battery CAPHAT, Package Outline
A2
A1AL
B1 B e1
eA
e3
D
N
E
1
Drawing is not to scale.
C
PCDIP
12/16
Page 13
M48Z35AY, M48Z35AV
Table 14. SOH28 - 28 lead Plastic Small Outline, battery SNAPHAT, Package Mechanical Data
Symb
Typ Min Ma x Typ Min Max
A 3.05 0.120 A1 0.05 0.3 6 0.002 0.014 A2 2.34 2.6 9 0.092 0.106
B 0.36 0.51 0.014 0.020
C 0.15 0.3 2 0.006 0.012
D 17.71 18.49 0.697 0.728
E 8.23 8.89 0.324 0.350
e 1.27 0.050
eB 3.20 3.6 1 0.126 0.142
H 11.51 12.70 0.453 0.500
L 0.41 1.2 7 0.016 0.050
α
N 28 28
mm inches
CP 0.10 0.004
Figure 12. SOH28 - 28 lead Plastic Small Outline, battery SNAPHAT, Package Outline
A2
A
C
Be
eB
CP
D
N
E
H
LA1 α
1
SOH-A
Drawing is not to scale.
13/16
Page 14
M48Z35AY, M48Z35AV
Table 15. SH - SNAPHAT Housing for 48 mAh Battery, Package Mechanical Data
Symb
Typ Min Max Typ Min Max
A 9.78 0.385 A1 6.73 7.24 0.265 0.285 A2 6.48 6.99 0.255 0.275 A3 0.38 0.015
B 0.46 0.56 0.018 0.022
D 21.21 21.84 0.835 0.860
E 14.22 14.99 0.560 0.590 eA 15.55 15.95 0.612 0.628 eB 3.20 3.61 0.126 0.142
L 2.03 2.29 0.080 0.090
mm inches
Figure 13. SH - SNAPHAT Housing for 48 mAh Battery, Package Outline
A1
A
eA
B
D
E
Drawing is not to scale.
A2
A3
L
eB
SHZP-A
14/16
Page 15
M48Z35AY, M48Z35AV
Table 16. SH - SNAPHAT Housing for 120 mAh Battery, Package Mechanical Data
Symb
Typ Min Max Typ Min Max
A 10.54 0.415 A1 8.00 8.51 0.315 0.335 A2 7.24 8.00 0.285 0.315 A3 0.38 0.015
B 0.46 0.56 0.018 0.022
D 21.21 21.84 0.835 0.860
E 17.27 18.03 0.680 0.710 eA 15.55 15.95 0.612 0.628 eB 3.20 3.61 0.126 0.142
L 2.03 2.29 0.080 0.090
mm inches
Figure 14. SH - SNAPHAT Housing for 120 mAh Battery, Package Outline
A1
A
eA
B
D
E
Drawing is not to scale.
A2
A3
L
eB
SHZP-A
15/16
Page 16
M48Z35AY, M48Z35AV
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