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M48T37

Description
0 TIMER(S), REAL TIME CLOCK, PDSO44
Categorysemiconductor    The embedded processor and controller   
File Size119KB,20 Pages
ManufacturerSTMicroelectronics
Websitehttp://www.st.com/
Download Datasheet Parametric Compare View All

M48T37 Overview

0 TIMER(S), REAL TIME CLOCK, PDSO44

M48T37 Parametric

Parameter NameAttribute value
External data bus width8
Number of terminals44
Minimum operating temperature0.0 Cel
Maximum operating temperature70 Cel
Processing package description0.330 INCH, ROHS COMPLIANT, PLASTIC, SOH-44
each_compliYes
stateNRFND
microprocessor_microcontroller_peripheral_ic_typeTIMER, REAL TIME CLOCK
clock_frequency_max0.0320 MHz
Information access methodsPARALLEL, DIRECT ADDRESS
interrupt_capabilityN
jesd_30_codeR-PDSO-G44
moisture_sensitivity_levelNOT SPECIFIED
Number of digits8
Number of timers0.0
Packaging MaterialsPLASTIC/EPOXY
ckage_codeSSOP
ckage_equivalence_codeSOP44,.5,32
packaging shapeRECTANGULAR
Package SizeSMALL OUTLINE, SHRINK PITCH
eak_reflow_temperature__cel_NOT SPECIFIED
wer_supplies5
qualification_statusCOMMERCIAL
seated_height_max3.05 mm
sub_categoryTimer or RTC
Rated supply voltage5 V
Minimum supply voltage4.5 V
Maximum supply voltage5.5 V
surface mountYES
CraftsmanshipCMOS
Temperature levelCOMMERCIAL
terminal coatingNOT SPECIFIED
Terminal formGULL WING
Terminal spacing0.8100 mm
Terminal locationDUAL
ime_miSECONDS
ime_peak_reflow_temperature_max__s_NOT SPECIFIED
volatileNO
length18.1 mm
width8.56 mm
M48T37Y
M48T37V
3.3V-5V 256 Kbit (32Kb x8) TIMEKEEPER
®
SRAM
s
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
(V
PFD
= Power-Fail Deselect Voltage):
– M48T37Y: 4.2V
V
PFD
4.5V
– M48T37V: 2.7V
V
PFD
3.0V
44
SNAPHAT (SH)
Battery
s
s
s
s
s
1
SOH44 (MH)
s
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
15
VCC
8
DQ0-DQ7
RST
IRQ/FT
s
Figure 1. Logic Diagram
s
s
s
Table 1. Signal Names
A0-A14
DQ0-DQ7
RST
IRQ/FT
WDI
E
G
W
V
CC
V
SS
NC
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
W
E
G
WDI
M48T37Y
M48T37V
VSS
AI02172

M48T37 Related Products

M48T37 M48T37YSH 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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