M48T37YSH datasheet, PDF - EEWORLD Datasheet

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M48T37YSH: Description0 TIMER(S), REAL TIME CLOCK, PDSO44; Categorysemiconductor The embedded processor and controller; File Size119KB，20 Pages; ManufacturerSTMicroelectronics; Websitehttp://www.st.com/

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M48T37YSH Overview

0 TIMER(S), REAL TIME CLOCK, PDSO44

M48T37YSH Parametric

Parameter Name	Attribute value
External data bus width	8
Number of terminals	44
Minimum operating temperature	0.0 Cel
Maximum operating temperature	70 Cel
Processing package description	0.330 INCH, ROHS COMPLIANT, PLASTIC, SOH-44
each_compli	Yes
state	NRFND
microprocessor_microcontroller_peripheral_ic_type	TIMER, REAL TIME CLOCK
clock_frequency_max	0.0320 MHz
Information access methods	PARALLEL, DIRECT ADDRESS
interrupt_capability	N
jesd_30_code	R-PDSO-G44
moisture_sensitivity_level	NOT SPECIFIED
Number of digits	8
Number of timers	0.0
Packaging Materials	PLASTIC/EPOXY
ckage_code	SSOP
ckage_equivalence_code	SOP44,.5,32
packaging shape	RECTANGULAR
Package Size	SMALL OUTLINE, SHRINK PITCH
eak_reflow_temperature__cel_	NOT SPECIFIED
wer_supplies	5
qualification_status	COMMERCIAL
seated_height_max	3.05 mm
sub_category	Timer or RTC
Rated supply voltage	5 V
Minimum supply voltage	4.5 V
Maximum supply voltage	5.5 V
surface mount	YES
Craftsmanship	CMOS
Temperature level	COMMERCIAL
terminal coating	NOT SPECIFIED
Terminal form	GULL WING
Terminal spacing	0.8100 mm
Terminal location	DUAL
ime_mi	SECONDS
ime_peak_reflow_temperature_max__s_	NOT SPECIFIED
volatile	NO
length	18.1 mm
width	8.56 mm

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M48T37Y

M48T37V

3.3V-5V 256 Kbit (32Kb x8) TIMEKEEPER

SRAM

INTEGRATED ULTRA-LOW POWER SRAM,

REAL TIME CLOCK, POWER-FAIL CONTROL

CIRCUIT and BATTERY

FREQUENCY TEST OUTPUT for REAL TIME

CLOCK SOFTWARE CALIBRATION

YEAR 2000 COMPLIANT

AUTOMATIC POWER-FAIL CHIP DESELECT

and WRITE PROTECTION

WATCHDOG TIMER

WRITE PROTECT VOLTAGE

PFD

= Power-Fail Deselect Voltage):

– M48T37Y: 4.2V

≤

PFD

≤

4.5V

– M48T37V: 2.7V

≤

PFD

≤

3.0V

SNAPHAT (SH)

Battery

SOH44 (MH)

PACKAGING INCLUDES a 44-LEAD SOIC and

SNAPHAT TOP (to be Ordered Separately)

SOIC PACKAGE PROVIDES DIRECT

CONNECTION for a SNAPHAT

TOP which

CONTAINS the BATTERY and CRYSTAL

MICROPROCESSOR POWER-ON RESET

(Valid even during battery back-up mode)

PROGRAMMABLE ALARM OUTPUT ACTIVE

in the BATTERY BACKED-UP

BATTERY LOW FLAG

A0-A14

VCC

DQ0-DQ7

RST

IRQ/FT

Figure 1. Logic Diagram

Table 1. Signal Names

A0-A14

DQ0-DQ7

RST

IRQ/FT

WDI

February 2000

Address Inputs

Data Inputs / Outputs

Power Fail Reset Output (Open Drain)

Interrupt / Frequency Test Output

(Open Drain)

Watchdog Input

Chip Enable

Output Enable

Write Enable

Supply Voltage

Ground

Not connected Internally

1/20

WDI

M48T37Y

M48T37V

VSS

AI02172

M48T37YSH Related Products

	M48T37YSH	M48T37	M48T37YMH	M48T37VMH	M48T37VSH
Description	0 TIMER(S), REAL TIME CLOCK, PDSO44	0 TIMER(S), REAL TIME CLOCK, PDSO44	0 TIMER(S), REAL TIME CLOCK, PDSO44	0 TIMER(S), REAL TIME CLOCK, PDSO44	0 TIMER(S), REAL TIME CLOCK, PDSO44
External data bus width	8	8	8	8	8
Number of terminals	44	44	44	44	44
Minimum operating temperature	0.0 Cel	0.0 Cel	0.0 Cel	0.0 Cel	0.0 Cel
Maximum operating temperature	70 Cel	70 Cel	70 Cel	70 Cel	70 Cel
Processing package description	0.330 INCH, ROHS COMPLIANT, PLASTIC, SOH-44	0.330 INCH, ROHS COMPLIANT, PLASTIC, SOH-44	0.330 INCH, ROHS COMPLIANT, PLASTIC, SOH-44	0.330 INCH, ROHS COMPLIANT, PLASTIC, SOH-44	0.330 INCH, ROHS COMPLIANT, PLASTIC, SOH-44
each_compli	Yes	Yes	Yes	Yes	Yes
state	NRFND	NRFND	NRFND	NRFND	NRFND
microprocessor_microcontroller_peripheral_ic_type	TIMER, REAL TIME CLOCK	TIMER, REAL TIME CLOCK	TIMER, REAL TIME CLOCK	TIMER, REAL TIME CLOCK	TIMER, REAL TIME CLOCK
clock_frequency_max	0.0320 MHz	0.0320 MHz	0.0320 MHz	0.0320 MHz	0.0320 MHz
Information access methods	PARALLEL, DIRECT ADDRESS	PARALLEL, DIRECT ADDRESS	PARALLEL, DIRECT ADDRESS	PARALLEL, DIRECT ADDRESS	PARALLEL, DIRECT ADDRESS
interrupt_capability	N	N	N	N	N
jesd_30_code	R-PDSO-G44	R-PDSO-G44	R-PDSO-G44	R-PDSO-G44	R-PDSO-G44
moisture_sensitivity_level	NOT SPECIFIED	NOT SPECIFIED	NOT SPECIFIED	NOT SPECIFIED	NOT SPECIFIED
Number of digits	8	8	8	8	8
Number of timers	0.0	0.0	0.0	0.0	0.0
Packaging Materials	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY
ckage_code	SSOP	SSOP	SSOP	SSOP	SSOP
ckage_equivalence_code	SOP44,.5,32	SOP44,.5,32	SOP44,.5,32	SOP44,.5,32	SOP44,.5,32
packaging shape	RECTANGULAR	RECTANGULAR	RECTANGULAR	RECTANGULAR	RECTANGULAR
Package Size	SMALL OUTLINE, SHRINK PITCH	SMALL OUTLINE, SHRINK PITCH	SMALL OUTLINE, SHRINK PITCH	SMALL OUTLINE, SHRINK PITCH	SMALL OUTLINE, SHRINK PITCH
eak_reflow_temperature__cel_	NOT SPECIFIED	NOT SPECIFIED	NOT SPECIFIED	NOT SPECIFIED	NOT SPECIFIED
wer_supplies	5	5	5	5	5
qualification_status	COMMERCIAL	COMMERCIAL	COMMERCIAL	COMMERCIAL	COMMERCIAL
seated_height_max	3.05 mm	3.05 mm	3.05 mm	3.05 mm	3.05 mm
sub_category	Timer or RTC	Timer or RTC	Timer or RTC	Timer or RTC	Timer or RTC
Rated supply voltage	5 V	5 V	5 V	5 V	5 V
Minimum supply voltage	4.5 V	4.5 V	4.5 V	4.5 V	4.5 V
Maximum supply voltage	5.5 V	5.5 V	5.5 V	5.5 V	5.5 V
surface mount	YES	YES	YES	YES	YES
Craftsmanship	CMOS	CMOS	CMOS	CMOS	CMOS
Temperature level	COMMERCIAL	COMMERCIAL	COMMERCIAL	COMMERCIAL	COMMERCIAL
terminal coating	NOT SPECIFIED	NOT SPECIFIED	NOT SPECIFIED	NOT SPECIFIED	NOT SPECIFIED
Terminal form	GULL WING	GULL WING	GULL WING	GULL WING	GULL WING
Terminal spacing	0.8100 mm	0.8100 mm	0.8100 mm	0.8100 mm	0.8100 mm
Terminal location	DUAL	DUAL	DUAL	DUAL	DUAL
ime_mi	SECONDS	SECONDS	SECONDS	SECONDS	SECONDS
ime_peak_reflow_temperature_max__s_	NOT SPECIFIED	NOT SPECIFIED	NOT SPECIFIED	NOT SPECIFIED	NOT SPECIFIED
volatile	NO	NO	NO	NO	NO
length	18.1 mm	18.1 mm	18.1 mm	18.1 mm	18.1 mm
width	8.56 mm	8.56 mm	8.56 mm	8.56 mm	8.56 mm

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