M48Z35Y-70MH1E STMicroelectronics, M48Z35Y-70MH1E Datasheet

IC NVSRAM 256KBIT 70NS 28SOIC

M48Z35Y-70MH1E

Manufacturer Part Number
M48Z35Y-70MH1E
Description
IC NVSRAM 256KBIT 70NS 28SOIC
Manufacturer
STMicroelectronics
Datasheets

Specifications of M48Z35Y-70MH1E

Format - Memory
RAM
Memory Type
NVSRAM (Non-Volatile SRAM)
Memory Size
256K (32K x 8)
Speed
70ns
Interface
Parallel
Voltage - Supply
4.5 V ~ 5.5 V
Operating Temperature
0°C ~ 70°C
Package / Case
28-SOIC, 28-SOH (8.48mm Width)
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)
4.5 V
Operating Current
50 mA
Maximum Operating Temperature
70 C
Minimum Operating Temperature
0 C
Mounting Style
SMD/SMT
Memory Configuration
32K X 8
Supply Voltage Range
4.5V To 5.5V
Memory Case Style
SOIC
No. Of Pins
28
Rohs Compliant
Yes
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
497-2883-5
M48Z35Y-70MH1

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Part Number:
M48Z35Y-70MH1E
Manufacturer:
ST
0
FEATURES SUMMARY
June 2005
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
SELF-CONTAINED BATTERY IN THE
CAPHAT™ DIP PACKAGE
PACKAGING INCLUDES A 28-LEAD SOIC
AND SNAPHAT
separately)
PIN AND FUNCTION COMPATIBLE WITH
JEDEC STANDARD 32K x 8 SRAMs
SOIC PACKAGE PROVIDES DIRECT
CONNECTION FOR A SNAPHAT TOP
WHICH CONTAINS THE BATTERY
PFD
M48Z35: V
4.5V
M48Z35Y: 4.5 to 5.5V
4.2V
= Power-fail Deselect Voltage)
V
V
PFD
PFD
CC
®
TOP (to be ordered
= 4.75 to 5.5V
4.75V
4.5V
256 Kbit (32 Kbit x8) ZEROPOWER
Figure 1. 28-pin CAPHAT™ DIP Package
Figure 2. 28-pin SOIC Package
28
28
SNAPHAT (SH)
Battery CAPHAT
PCDIP28 (PC)
SOH28 (MH)
1
Battery
1
M48Z35Y
M48Z35
®
SRAM
Rev 6
1/20

Related parts for M48Z35Y-70MH1E

M48Z35Y-70MH1E Summary of contents

Page 1

... Power-fail Deselect Voltage) PFD – M48Z35 4.75 to 5.5V CC 4.5V V 4.75V PFD – M48Z35Y: 4.5 to 5.5V 4.2V V 4.5V PFD SELF-CONTAINED BATTERY IN THE CAPHAT™ DIP PACKAGE PACKAGING INCLUDES A 28-LEAD SOIC ® AND SNAPHAT TOP (to be ordered separately) PIN AND FUNCTION COMPATIBLE WITH ...

Page 2

... M48Z35, M48Z35Y TABLE OF CONTENTS FEATURES SUMMARY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Figure 1. 28-pin CAPHAT™ DIP Package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Figure 2. 28-pin SOIC Package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Figure 3. Logic Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Table 1. Signal Names . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Figure 4. DIP Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Figure 5. SOIC Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Figure 6. Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 OPERATING MODES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Table 2. Operating Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 READ Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Figure 7. READ Mode AC Waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Table 3 ...

Page 3

... Figure 16.SH – 4-pin SNAPHAT Housing for 120mAh Battery, Package Outline . . . . . . . . . . . . . . 17 Table 14. SH – 4-pin SNAPHAT Housing for 120mAh Battery, Package Mechanical Data . . . . . . 17 PART NUMBERING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 Table 15. Ordering Information Scheme . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 Table 16. SNAPHAT Battery Table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 REVISION HISTORY Table 17. Revision History M48Z35, M48Z35Y 3/20 ...

Page 4

... M48Z35, M48Z35Y DESCRIPTION The M48Z35/Y ZEROPOWER x 8, non-volatile static RAM that integrates power- fail deselect circuitry and battery control logic on a single die. The monolithic chip is available in two special packages to provide a highly integrated battery backed-up memory solution. The M48Z35 non-volatile pin and function equivalent to any JEDEC standard 32K x 8 SRAM ...

Page 5

... DQ0 11 DQ1 12 DQ2 AI01617D Figure 6. Block Diagram LITHIUM CELL VOLTAGE SENSE Figure 5. SOIC Connections A13 A11 A10 DQ7 18 DQ6 17 DQ5 16 DQ4 15 DQ3 POWER AND V PFD SWITCHING CIRCUITRY V CC M48Z35, M48Z35Y A14 A12 A13 A11 M48Z35Y A10 DQ7 DQ0 11 18 DQ6 DQ1 12 ...

Page 6

... M48Z35, M48Z35Y OPERATING MODES The M48Z35/Y also has its own Power-fail Detect circuit. The control circuitry constantly monitors the single 5V supply for an out of tolerance condi- tion. When V is out of tolerance, the circuit write CC protects the SRAM, providing a high degree of Table 2. Operating Modes ...

Page 7

... WRITE cycles to avoid bus contention; although, if the output bus has been activated by a low on E and G, a low on W will disable the outputs t from after W falls. WHAX tAVAV VALID tAVWH tAVEL tWLWH tAVWL tWLQZ tDVWH M48Z35, M48Z35Y M48Z35/Y –70 Min Max ...

Page 8

... M48Z35, M48Z35Y Figure 9. Chip Enable Controlled, WRITE AC Waveforms A0-A14 E W DQ0-DQ7 Table 4. WRITE Mode AC Characteristics Symbol t WRITE Cycle Time AVAV t Address Valid to WRITE Enable Low AVWL t Address Valid to Chip Enable Low AVEL t WRITE Enable Pulse Width WLWH t Chip Enable Low to Chip Enable High ...

Page 9

... V Rise Time CC Rise Time 70° 4.75 to 5.5V or 4.5 to 5.5V (except where noted may result in deselection/write protection not occurring until 200µs after V F may cause corruption of RAM data. FB M48Z35, M48Z35Y drops below V , the control circuit reaches V CC after V exceeds V (max). CC ...

Page 10

... M48Z35, M48Z35Y Table 6. Power Down/Up Trip Points DC Characteristics Symbol V Power-fail Deselect Voltage PFD V Battery Back-up Switchover Voltage SO (2) Expected Data Retention Time t DR Note: All voltages referenced Note: 1. Valid for Ambient Operating Temperature 25° 0V Noise And Negative Going Transients CC I transients, including those produced by output ...

Page 11

... Exposure to Absolute Maximum Rat- ing conditions for extended periods may affect de- vice reliability. STMicroelectronics SURE Program and other rel- evant quality documents. Parameter SNAPHAT Off, Oscillator Off) CC SOIC M48Z35, M48Z35Y Refer also to Value Unit °C ® – °C –55 to 125 ° ...

Page 12

... M48Z35, M48Z35Y DC AND AC PARAMETERS This section summarizes the operating and mea- surement 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 Measure- Table 8. Operating and AC Measurement Conditions Parameter Supply Voltage (V ...

Page 13

... Output High Voltage OH Note: 1. Valid for Ambient Operating Temperature Outputs deselected. (1) Test Condition OUT CC Outputs open – 0. 2.1mA –1mA 70° 4.75 to 5.5V or 4.5 to 5.5V (except where noted M48Z35, M48Z35Y Min Max Unit ±1 µA ±5 µ –0.3 0 0.3 2 0.4 V 2.4 V 13/20 ...

Page 14

... M48Z35, M48Z35Y PACKAGE MECHANICAL INFORMATION Figure 13. PCDIP28 – 28-pin Plastic DIP, battery CAPHAT™, Package Outline Note: Drawing is not to scale. Table 11. PMDIP28 – 28-pin Plastic DIP, battery CAPHAT™, Package Mechanical Data Symb Typ 14/ Min Max 8.89 9.65 0.38 0.76 8.38 8 ...

Page 15

... M48Z35, M48Z35Y inch Typ Min 0.002 0.092 0.014 0.006 0.697 0.324 0.050 – 0.126 0.453 0.016 0° 28 Max 0.120 0.014 ...

Page 16

... M48Z35, M48Z35Y Figure 15. SH – 4-pin SNAPHAT Housing for 48mAh Battery, Package Outline Note: Drawing is not to scale. Table 13. SH – 4-pin SNAPHAT Housing for 48mAh Battery, Package Mechanical Data Symb Typ 16/ Min Max 9.78 6.73 7.24 6.48 6.99 0.38 0.46 0.56 21 ...

Page 17

... E mm 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 M48Z35, M48Z35Y SHZP-A 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 0.612 ...

Page 18

... M48Z35, M48Z35Y PART NUMBERING Table 15. Ordering Information Scheme Example: Device Type M48Z Supply Voltage and Write Protect Voltage ( 4.75 to 5.5V 4.5 to 4.75V CC PFD 35Y = V = 4.5 to 5.5V 4.2 to 4.5V CC PFD Speed –70 = 70ns Package PC = PCDIP28 ( SOH28 Temperature Range 70°C Shipping Method For SOH28: ...

Page 19

... Modified reflow time and temperature footnotes (Table 7) 02-Apr-03 3.0 v2.2 template applied; test condition updated (Table 6) 03-Mar-04 4.0 Reformatted; updated with Lead-free information (Table 7, 15) 20-Aug-04 5.0 Reformatted; remove references to ‘crystal’ (Figure 2) Removal of SNAPHAT, Industrial temperature sales types (Table 10, 09-Jun-05 6 15) M48Z35, M48Z35Y Revision Details 19/20 ...

Page 20

... M48Z35, M48Z35Y Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications mentioned in this publication are subject to change without notice ...

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