M48Z35Y-70MH1F Datasheet M48Z35-70PC1, M48Z35Y-70PC1, M48Z35Y-70MH1F | P1-P3

June 2011 Doc ID 2608 Rev 10 1/24

M48Z35

M48Z35Y

256 Kbit (32 Kbit x 8) ZEROPOWER

SRAM

Features

■ 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:

PFD

= power-fail deselect voltage)

–M48Z35: V

= 4.75 to 5.5 V;

4.5 V ≤ V

PFD

≤ 4.75 V

– M48Z35Y: 4.5 to 5.5 V;

4.2 V ≤ V

PFD

≤ 4.5 V

■ 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 JEDEC

standard 32 K x 8 SRAMs

■ SOIC package provides direct connection for a

SNAPHAT

top which contains the battery

■ RoHS compliant

– Lead-free second level interconnect

PCDIP28

battery CAPHAT™

SNAPHAT

battery

SOH28

www.st.com

Contents M48Z35, M48Z35Y

2/24 Doc ID 2608 Rev 10

Contents

1 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

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 . . . . . . . . . . . . . . . . . . . . . . . . . 13

3 Maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

4 DC and AC parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

5 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

6 Part numbering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

7 Environmental information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

8 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

M48Z35, M48Z35Y List of tables

Doc ID 2608 Rev 10 3/24

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. DC characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Table 11. PMDIP28 – 28-pin plastic DIP, battery CAPHAT™, pack. mech. data. . . . . . . . . . . . . . . . 17

Table 12. SOH28 – 28-lead plastic small outline, battery SNAPHAT

, pack. mech. data . . . . . . . . . 18

Table 13. SH – 4-pin SNAPHAT

housing for 48 mAh battery, pack. mech. data . . . . . . . . . . . . . . . 19

Table 14. SH – 4-pin SNAPHAT

housing for 120 mAh battery, pack. mech. data . . . . . . . . . . . . . . 20

Table 15. Ordering information scheme . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Table 16. SNAPHAT

battery table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Table 17. Document revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

P1-P3 P4-P6 P7-P9 P10-P12 P13-P15 P16-P18 P19-P21 P22-P24

M48Z35Y-70MH1F

Mfr. #:

Buy M48Z35Y-70MH1F

Manufacturer:

STMicroelectronics

Description:

NVRAM 256K (32Kx8) 70ns

Lifecycle:

New from this manufacturer.

Delivery:

DHL FedEx Ups TNT EMS

Payment:

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M48Z35Y-70MH1F

M48Z35Y-70MH1F

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