M48T35AV-10MH1E datasheet, PDF

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M48T35AV-10MH1E: DescriptionNVRAM 256K (32Kx8) 100ns; CategoryThe embedded processor and controller Microcontrollers and processors; File Size451KB，29 Pages; ManufacturerSTMicroelectronics; Websitehttp://www.st.com/; Environmental Compliance

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M48T35AV-10MH1E Overview

NVRAM 256K (32Kx8) 100ns

M48T35AV-10MH1E Parametric

Parameter Name	Attribute value
Brand Name	STMicroelectronics
Is it Rohs certified?	conform to
Maker	STMicroelectronics
Parts packaging code	SOIC
package instruction	SOP, SOP28,.5
Contacts	28
Reach Compliance Code	compliant
ECCN code	EAR99
Samacsys Confidence	3
Samacsys Status	Released
Samacsys PartID	179741
Samacsys Pin Count	28
Samacsys Part Category	Integrated Circuit
Samacsys Package Category	Small Outline Packages
Samacsys Footprint Name	SOH28
Samacsys Released Date	2015-04-13 16:53:05
Is Samacsys	N
maximum clock frequency	0.032 MHz
External data bus width	8
Information access methods	PARALLEL, DIRECT ADDRESS
interrupt capability	N
JESD-30 code	R-PDSO-G28
JESD-609 code	e3
length	18.1 mm
Humidity sensitivity level	3
Number of terminals	28
Number of timers
Maximum operating temperature	70 °C
Minimum operating temperature
Package body material	PLASTIC/EPOXY
encapsulated code	SOP
Encapsulate equivalent code	SOP28,.5
Package shape	RECTANGULAR
Package form	SMALL OUTLINE
Peak Reflow Temperature (Celsius)	260
power supply	3.3 V
Certification status	Not Qualified
Maximum seat height	3.05 mm
Maximum supply voltage	3.6 V
Minimum supply voltage	3 V
Nominal supply voltage	3.3 V
surface mount	YES
technology	CMOS
Temperature level	COMMERCIAL
Terminal surface	Matte Tin (Sn)
Terminal form	GULL WING
Terminal pitch	1.27 mm
Terminal location	DUAL
shortest time	SECONDS
Maximum time at peak reflow temperature	30
Volatile	NO
width	8.56 mm
uPs/uCs/peripheral integrated circuit type	TIMER, REAL TIME CLOCK
Base Number Matches	1

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M48T35AV

3.3 V, 256 Kbit (32 Kbit x 8) TIMEKEEPER

SRAM

Features

■

Integrated, ultra low power SRAM, real-time

clock, power-fail control circuit and battery

BYTEWIDE

™

RAM-like clock access

BCD coded year, month, day, date, hours,

minutes, and seconds

Battery low flag (BOK)

Frequency test output for real-time clock

Automatic power-fail chip deselect and WRITE

protection

WRITE protect voltage

PFD

= power-fail deselect voltage):

– M48T35AV: V

= 3.0 to 3.6 V;

2.7 V

≤

PFD

≤

3.0 V

Self-contained battery and crystal in the

CAPHAT

™

DIP package

SOIC package provides direct connection for a

SNAPHAT

housing containing the battery and

crystal

SNAPHAT

housing (battery and crystal) is

replaceable

Pin and function compatible with JEDEC

standard 32 Kbit x 8 SRAMs

RoHS compliant

– Lead-free second level interconnect

PCDIP28

battery/crystal

CAPHAT™

SNAPHAT

battery/crystal

■

SOH28

June 2011

Doc ID 6845 Rev 9

1/29

www.st.com

M48T35AV

List of tables

Table 1.

Table 2.

Table 3.

Table 4.

Table 5.

Table 6.

Table 7.

Table 8.

Table 9.

Table 10.

Table 11.

Table 12.

Table 13.

Table 14.

Table 15.

Table 16.

Table 17.

Table 18.

Signal names . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Operating modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

READ mode AC characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

WRITE mode AC characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Register map . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Operating and AC measurement conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Capacitance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

DC characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Power down/up AC characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Power down/up trip points DC characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

PCDIP28 – 28-pin plastic DIP, battery CAPHAT™, pack. mech. data . . . . . . . . . . . . . . . . 22

SOH28 – 28-lead plastic small outline, 4-socket battery SNAPHAT

, pack. mech. data. . 23

SH – 4-pin SNAPHAT

housing for 48 mAh battery & crystal, pack. mech. data . . . . . . . 24

SH – 4-pin SNAPHAT

housing for 120 mAh battery & crystal, pack. mech. data . . . . . . 25

Ordering information scheme . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

SNAPHAT

battery table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

Document revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

Doc ID 6845 Rev 9

3/29

List of figures

M48T35AV

List of figures

Figure 1.

Figure 2.

Figure 3.

Figure 4.

Figure 5.

Figure 6.

Figure 7.

Figure 8.

Figure 9.

Figure 10.

Figure 11.

Figure 12.

Figure 13.

Figure 14.

Figure 15.

Figure 16.

Figure 17.

Figure 18.

Logic diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

DIP connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

SOIC connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

READ mode AC waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

WRITE enable controlled, WRITE mode AC waveform . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Chip enable controlled, WRITE mode AC waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Checking the BOK flag status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Crystal accuracy across temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Clock calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Supply voltage protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

AC measurement load circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Power down/up mode AC waveforms. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

PCDIP28 – 28-pin plastic DIP, battery CAPHAT™, package outline . . . . . . . . . . . . . . . . . 22

SOH28 – 28-lead plastic small outline, 4-socket battery SNAPHAT

, package outline . . . 23

SH – 4-pin SNAPHAT

housing for 48 mAh battery & crystal, pack. outline . . . . . . . . . . . 24

SH – 4-pin SNAPHAT

housing for 120 mAh battery & crystal, pack. outline . . . . . . . . . . 25

Recycling symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

4/29

Doc ID 6845 Rev 9

M48T35AV-10MH1E Related Products

	M48T35AV-10MH1E	M48T35AV-10MH6E	M48T35AV-10PC1	M48T35AV-10MH1F
Description	NVRAM 256K (32Kx8) 100ns	NVRAM 256K (32Kx8) 100ns BULK	NVRAM 256K (32Kx8) 100ns	WiFi / 802.11 Modules WiFly GSX 802.11b/g Mod, Industrial Temp
Brand Name	STMicroelectronics	STMicroelectronics	STMicroelectronics	STMicroelectronics
Maker	STMicroelectronics	STMicroelectronics	STMicroelectronics	STMicroelectronics
Parts packaging code	SOIC	SOIC	DIP	SOIC
package instruction	SOP, SOP28,.5	0.330 INCH, LEAD FREE, PLASTIC, SOH-28	DIP-28	SOP, SOP28,.5
Contacts	28	28	28	28
Reach Compliance Code	compliant	compliant	not_compliant	not_compliant
ECCN code	EAR99	EAR99	EAR99	EAR99
External data bus width	8	8	8	8
Information access methods	PARALLEL, DIRECT ADDRESS	PARALLEL, DIRECT ADDRESS	PARALLEL, DIRECT ADDRESS	PARALLEL, DIRECT ADDRESS
interrupt capability	N	N	N	N
JESD-30 code	R-PDSO-G28	R-PDSO-G28	R-PDIP-T28	R-PDSO-G28
length	18.1 mm	18.1 mm	39.625 mm	18.1 mm
Number of terminals	28	28	28	28
Maximum operating temperature	70 °C	85 °C	70 °C	70 °C
Package body material	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY
encapsulated code	SOP	SOP	DIP	SOP
Encapsulate equivalent code	SOP28,.5	SOP28,.5	DIP28,.6	SOP28,.5
Package shape	RECTANGULAR	RECTANGULAR	RECTANGULAR	RECTANGULAR
Package form	SMALL OUTLINE	SMALL OUTLINE	IN-LINE	SMALL OUTLINE
Peak Reflow Temperature (Celsius)	260	260	NOT SPECIFIED	245
power supply	3.3 V	3.3 V	3.3 V	3.3 V
Certification status	Not Qualified	Not Qualified	Not Qualified	Not Qualified
Maximum seat height	3.05 mm	3.05 mm	9.65 mm	3.05 mm
Maximum supply voltage	3.6 V	3.6 V	3.6 V	3.6 V
Minimum supply voltage	3 V	3 V	3 V	3 V
Nominal supply voltage	3.3 V	3.3 V	3.3 V	3.3 V
surface mount	YES	YES	NO	YES
technology	CMOS	CMOS	CMOS	CMOS
Temperature level	COMMERCIAL	INDUSTRIAL	COMMERCIAL	COMMERCIAL
Terminal form	GULL WING	GULL WING	THROUGH-HOLE	GULL WING
Terminal pitch	1.27 mm	1.27 mm	2.54 mm	1.27 mm
Terminal location	DUAL	DUAL	DUAL	DUAL
shortest time	SECONDS	SECONDS	SECONDS	SECONDS
Maximum time at peak reflow temperature	30	10	NOT SPECIFIED	30
Volatile	NO	NO	NO	NO
width	8.56 mm	8.56 mm	15.24 mm	8.56 mm
uPs/uCs/peripheral integrated circuit type	TIMER, REAL TIME CLOCK	TIMER, REAL TIME CLOCK	TIMER, REAL TIME CLOCK	TIMER, REAL TIME CLOCK
maximum clock frequency	0.032 MHz	-	0.032 MHz	0.032 MHz
JESD-609 code	e3	-	e3	e3
Terminal surface	Matte Tin (Sn)	-	Matte Tin (Sn)	Matte Tin (Sn)
Base Number Matches	1	-	1	1

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