M48Z35-70PC1 STMicroelectronics, M48Z35-70PC1 Datasheet

IC NVSRAM 256KBIT 70NS 28DIP

M48Z35-70PC1

Manufacturer Part Number
M48Z35-70PC1
Description
IC NVSRAM 256KBIT 70NS 28DIP
Manufacturer
STMicroelectronics
Datasheet

Specifications of M48Z35-70PC1

Format - Memory
RAM
Memory Type
NVSRAM (Non-Volatile SRAM)
Memory Size
256K (32K x 8)
Speed
70ns
Interface
Parallel
Voltage - Supply
4.75 V ~ 5.5 V
Operating Temperature
0°C ~ 70°C
Package / Case
28-DIP Module (600 mil), 28-EDIP
Data Bus Width
8 bit
Organization
32 Kb x 8
Interface Type
Parallel
Access Time
70 ns
Supply Voltage (max)
5.5 V
Supply Voltage (min)
4.75 V
Operating Current
50 mA
Maximum Operating Temperature
70 C
Minimum Operating Temperature
0 C
Mounting Style
Through Hole
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
497-2879-5

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
M48Z35-70PC1
Manufacturer:
ST
Quantity:
1 000
Part Number:
M48Z35-70PC1
Manufacturer:
NEC
Quantity:
1 000
Part Number:
M48Z35-70PC1
Manufacturer:
ST
0
Part Number:
M48Z35-70PC1
Manufacturer:
ST
Quantity:
20 000
Part Number:
M48Z35-70PC1
Manufacturer:
ST
Quantity:
5 059
Features
August 2010
Integrated, ultra low power SRAM, power-fail
control circuit, and battery
READ cycle time equals WRITE cycle time
Automatic power-fail chip deselect and WRITE
protection
WRITE protect voltages:
(V
– M48Z35: V
– M48Z35Y: 4.5 to 5.5 V
Self-contained battery in the CAPHAT
package
Packaging includes a 28-lead SOIC and
SNAPHAT
Pin and function compatible with JEDEC
standard 32 K x 8 SRAMs
SOIC package provides direct connection for a
SNAPHAT
RoHS compliant
– Lead-free second level interconnect
PFD
4.5 V ≤ V
4.2 V ≤ V
= Power-fail deselect voltage)
®
®
PFD
PFD
top (to be ordered separately)
top which contains the battery
CC
≤ 4.75 V
≤ 4.5 V
= 4.75 to 5.5 V
256 Kbit (32 Kbit x 8) ZEROPOWER
Doc ID 2608 Rev 9
DIP
28
28
battery CAPHAT™
SNAPHAT
PCDIP28 (PC)
1
SOH28 (MH)
battery
1
®
(SH)
M48Z35Y
M48Z35
®
SRAM
www.st.com
1/24
1

Related parts for M48Z35-70PC1

M48Z35-70PC1 Summary of contents

Page 1

... WRITE protect voltages Power-fail deselect voltage) PFD – M48Z35 4. 4.5 V ≤ V ≤ 4.75 V PFD – M48Z35Y: 4.5 to 5.5 V 4.2 V ≤ V ≤ 4.5 V PFD ■ Self-contained battery in the CAPHAT package ■ Packaging includes a 28-lead SOIC and ® SNAPHAT top (to be ordered separately) ■ ...

Page 2

... Operating modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 2.1 READ mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 2.2 WRITE mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 2.3 Data retention mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 2.4 V noise and negative going transients . . . . . . . . . . . . . . . . . . . . . . . . . Maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . and AC parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 5 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 6 Part numbering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 7 Environmental information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 8 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 2/24 Doc ID 2608 Rev 9 M48Z35, M48Z35Y ...

Page 3

... M48Z35, M48Z35Y List of tables Table 1. Signal names . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Table 2. Operating modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Table 3. READ mode AC characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Table 4. WRITE mode AC characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Table 5. Power down/up AC characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Table 6. Power down/up trip points DC characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Table 7. Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 Table 8. Operating and AC measurement conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 Table 9. Capacitance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 Table 10. ...

Page 4

... SOH28 – 28-lead plastic small outline, battery SNAPHAT Figure 13. SH – 4-pin SNAPHAT Figure 14. SH – 4-pin SNAPHAT Figure 15. Recycling symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 4/24 ® housing for 48 mAh battery, package outline . . . . . . . . . . . . . . . . 19 ® housing for 120 mAh battery, package outline . . . . . . . . . . . . . . . 20 Doc ID 2608 Rev 9 M48Z35, M48Z35Y ® , pack. outline ...

Page 5

... The M48Z35 non-volatile pin and function equivalent to any JEDEC standard 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 of WRITEs that can be performed ...

Page 6

... A13 A11 M48Z35 A10 M48Z35Y DQ7 DQ0 11 18 DQ6 DQ1 12 17 DQ5 DQ2 13 16 DQ4 DQ3 A14 A12 A13 A11 M48Z35Y A10 DQ7 DQ0 11 18 DQ6 DQ1 12 17 DQ5 DQ2 13 16 DQ4 DQ3 Doc ID 2608 Rev 9 M48Z35, M48Z35Y AI01617D AI02303C ...

Page 7

... M48Z35, M48Z35Y Figure 4. Block diagram LITHIUM CELL POWER VOLTAGE SENSE AND V PFD SWITCHING CIRCUITRY V CC Doc ID 2608 Rev 9 Description A0-A14 DQ0-DQ7 32K x 8 SRAM ARRAY AI01619B 7/24 ...

Page 8

... SO 2.1 READ mode The M48Z35 the READ mode whenever W (WRITE enable) is high, E (chip enable) is low. The device architecture allows ripple-through access of data from eight of 264,144 locations 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 accessed. Valid data will be available at the data I/O pins within address access time (t signal is stable, providing that the E and G access times are also satisfied ...

Page 9

... M48Z35, M48Z35Y Figure 5. READ mode AC waveforms A0-A14 E G DQ0-DQ7 Note: WRITE enable (W) = High. Table 3. READ mode AC characteristics Symbol t READ cycle time AVAV (2) t Address valid to output valid AVQV (2) t Chip enable low to output valid ELQV (2) t Output enable low to output valid ...

Page 10

... Operating modes 2.2 WRITE mode The M48Z35 the WRITE mode whenever W and E are low. The start of a WRITE is referenced from the latter occurring falling edge WRITE is terminated by the earlier rising edge The addresses must be held valid throughout the cycle must return high for a minimum the initiation of another READ or WRITE cycle ...

Page 11

... V of the power supply lines is recommended. When V drops below V CC preserves data. The internal button cell will maintain data in the M48Z35/Y for an accumulated period of at least 10 years (at 25°C) when V As system power returns and V power supply is switched to external V V ...

Page 12

... F may cause corruption of RAM data. FB (1) M48Z35 M48Z35Y M48Z35 ° 4.75 to 5.5V or 4.5 to 5.5V (except where noted Doc ID 2608 Rev 9 M48Z35, M48Z35Y tR tRB trec RECOGNIZED VALID (PER CONTROL INPUT) Min Max 0 300 ...

Page 13

... M48Z35, M48Z35Y 2.4 V noise and negative going transients CC I transients, including those produced by output switching, can produce voltage CC fluctuations, resulting in spikes on the V capacitors are used to store energy which stabilizes the V bypass capacitors will be released as low going spikes are generated or energy will be absorbed when overshoots occur. A ceramic bypass capacitor value of 0.1 µ ...

Page 14

... Negative undershoots below –0.3 V are not allowed on any pin while in the battery backup mode. Caution: Do NOT wave solder SOIC to avoid damaging SNAPHAT 14/24 Parameter SNAPHAT off, oscillator off) CAPHAT CC SOH28 ® sockets. Doc ID 2608 Rev 9 M48Z35, M48Z35Y Value Unit °C ® top – °C ® DIP – °C –55 to 125 ° ...

Page 15

... M48Z35, M48Z35Y 4 DC and AC parameters This section summarizes the operating and measurement conditions, as well as the DC and AC characteristics of the device. The parameters in the following DC and AC characteristic tables are derived from tests performed under the measurement conditions listed in Operating and AC measurement conditions in their projects match the measurement conditions when using the quoted parameters ...

Page 16

... Outputs deselected. 16/24 (1) Test condition 0 V ≤ V ≤ ≤ V ≤ V OUT CC Outputs open – – ° 4. 4.5 to 5.5 V (except where noted Doc ID 2608 Rev 9 M48Z35, M48Z35Y Min Max Unit ±1 µA ±5 µ –0.3 0 0.4 V 2.4 V ...

Page 17

... M48Z35, M48Z35Y 5 Package mechanical data In order to meet environmental requirements, ST offers these devices in different grades of ® ECOPACK packages, depending on their level of environmental compliance. ECOPACK specifications, grade definitions and product status are available at: www.st.com. ® ECOPACK trademark. Figure 11. PCDIP28 – 28-pin plastic DIP, battery CAPHAT™, package outline Note: Drawing is not to scale ...

Page 18

... Doc ID 2608 Rev 9 M48Z35, M48Z35Y ® , pack. outline C eB α ® , pack. mech. inches Typ Min 0.002 0.092 0.014 0.006 0.697 0.324 0.050 – ...

Page 19

... M48Z35, M48Z35Y Figure 13. SH – 4-pin SNAPHAT Note: Drawing is not to scale. Table 13. SH – 4-pin SNAPHAT Symbol ® housing for 48 mAh battery, package outline ® housing for 48 mAh battery, pack. mech. data mm Typ Min Max 9.78 6.73 7.24 6.48 6.99 0.38 ...

Page 20

... Min Max 10.54 8.00 8.51 7.24 8.00 0.38 0.46 0.56 21.21 21.84 17.27 18.03 15.55 15.95 3.20 3.61 2.03 2.29 Doc ID 2608 Rev 9 M48Z35, M48Z35Y inches Typ Min Max 0.415 0.315 0.335 0.285 0.315 0.015 0.018 0.022 0.835 0.860 0.680 0.710 ...

Page 21

... E = Lead-free ECOPACK F = Lead-free ECOPACK For PCDIP28: blank = Tubes 1. The M48Z35 part is offered with the PCDIP28 (CAPHAT) package only. 2. The SOIC package (SOH28) requires the SNAPHAT the part number “M4Zxx-BR00SH1” in plastic tubes (see Caution: Do not place the SNAPHAT battery package “M4Zxx-BR00SH1” in conductive foam as it will drain the lithium button-cell battery ...

Page 22

... Recycle or dispose of batteries in accordance with the battery manufacturer's instructions and local/national disposal and recycling regulations. Please refer to the following web site address for additional information regarding compliance statements and waste recycling www.st.com/nvram, then select "Lithium Battery Recycling" from "Related Topics". 22/24 Doc ID 2608 Rev 9 M48Z35, M48Z35Y ...

Page 23

... M48Z35, M48Z35Y 8 Revision history Table 17. Document revision history Date Revision Aug-1999 21-Apr-2000 10-May-2001 29-May-2002 02-Apr-2003 03-Mar-2004 20-Aug-2004 09-Jun-2005 02-Nov-2007 25-Mar-2009 19-Aug-2010 1 First issue 1.1 SH and SH28 packages for 2-pin and 2-socket removed 2 Reformatted; added temperature information 2.1 Modified reflow time and temperature footnotes 3 v2.2 template applied ...

Page 24

... Australia - Belgium - Brazil - Canada - China - Czech Republic - Finland - France - Germany - Hong Kong - India - Israel - Italy - Japan - Malaysia - Malta - Morocco - Philippines - Singapore - Spain - Sweden - Switzerland - United Kingdom - United States of America 24/24 Please Read Carefully: © 2010 STMicroelectronics - All rights reserved STMicroelectronics group of companies www.st.com Doc ID 2608 Rev 9 M48Z35, M48Z35Y ...

Related keywords