M48T35AV-70PC1 datasheet(4/25 Pages) STMICROELECTRONICS

Part #	M48T35AV-70PC1

Description	5.0 or 3.3V, 256 Kbit (32 Kb x8) TIMEKEEPER짰 SRAM

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Manufacturer	STMICROELECTRONICS [STMicroelectronics]

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M48T35AY, M48T35AV

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SUMMARY DESCRIPTION

The M48T35AY/V TIMEKEEPER® RAM is a 32Kb

x 8 non-volatile static RAM and real time clock.

The monolithic chip is available in two special

packages to provide a highly integrated battery

backed-up memory and real time clock solution.

The M48T35AY/V is a non-volatile pin and func-

tion equivalent to any JEDEC standard 32Kb x 8

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.

The 28-pin, 600mil DIP CAPHAT™ houses the

M48T35AY/V silicon with a quartz crystal and a

long-life lithium button cell in a single package.

The 28-pin, 330mil SOIC provides sockets with

gold plated contacts at both ends for direct con-

nection to a separate SNAPHAT® housing con-

taining the battery and crystal. The unique design

allows the SNAPHAT battery package to be

mounted on top of the SOIC package after the

completion of the surface mount process. Inser-

tion of the SNAPHAT housing after reflow pre-

vents potential battery and crystal damage due to

the high temperatures required for device surface-

mounting. The SNAPHAT housing is keyed to pre-

vent reverse insertion.

The SOIC and battery/crystal packages are

shipped separately in plastic anti-static tubes or in

Tape & Reel form.

For the 28-lead SOIC, the battery/crystal package

(e.g. SNAPHAT) part number is “M4T28-BR12SH”

(see Table 17., page 23).

Figure 3. Logic Diagram

Table 1. Signal Names

AI02797B

15

A0-A14

W

DQ0-DQ7

VCC

M48T35AY

M48T35AV

G

VSS

8

E

A0-A14

Address Inputs

DQ0-DQ7

Data Inputs / Outputs

E

Chip Enable

G

Output Enable

W

WRITE Enable

VCC

Supply Voltage

VSS

Ground

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STMicroelectronics	M48T35AV-70PC1	148Kb / 19P	256 Kbit 32Kb x8 TIMEKEEPER SRAM
STMicroelectronics	M48T35AV-70PC1TR	148Kb / 19P	256 Kbit 32Kb x8 TIMEKEEPER SRAM

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Similar Description - M48T35AV-70PC1

Manufacturer	Part #	Datasheet	Description
STMicroelectronics	M48T37Y	521Kb / 30P	5.0 or 3.3 V, 256 Kbit (32 Kbit x 8) TIMEKEEPER짰 SRAM
	M48T35	497Kb / 26P	5 V, 256 Kbit (32 Kb x 8) TIMEKEEPER짰 SRAM
	M48T35Y	478Kb / 28P	5 V, 256 Kbit (32 Kb x 8) TIMEKEEPER짰 SRAM
	M48T35	478Kb / 28P	5 V, 256 Kbit (32 Kb x 8) TIMEKEEPER짰 SRAM June 2011 Rev 10
	M48T35AV	498Kb / 29P	3.3 V, 256 Kbit (32 Kbit x 8) TIMEKEEPER짰 SRAM June 2011 Rev 9
	M48T58Y	495Kb / 33P	5.0 V, 64 Kbit (8 Kb x 8) TIMEKEEPER짰 SRAM June 2011 Rev 8
	M48T58	495Kb / 33P	5.0 V, 64 Kbit (8 Kb x 8) TIMEKEEPER짰 SRAM June 2011 Rev 8
	M48T02	395Kb / 25P	5.0 V, 16 Kbit (2 Kb x 8) TIMEKEEPER짰 SRAM
	M48T58	517Kb / 33P	5.0 V, 64 Kbit (8 Kb x 8) TIMEKEEPER짰 SRAM
	M48T201Y	318Kb / 35P	5.0 or 3.3V TIMEKEEPER짰 supervisor

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M48T35AV-70PC1 Datasheet(PDF) 4 Page - STMicroelectronics

M48T35AV-70PC1 Datasheet(HTML) 4 Page - STMicroelectronics

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