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M48T08Y

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 TYPICAL CLOCK ACCURACY OF ±1 MINUTE A MONTH, AT 25°C AUTOMATIC POWER-FAIL CHIP DESELECT AND WRITE...

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SeekIC No. : 004405350 Detail

M48T08Y: 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 SECON...

M48T08Y Data Sheet

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Part Number:
M48T08Y
Supply Ability:
5000

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  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Product Details

Description



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
TYPICAL CLOCK ACCURACY OF ±1 MINUTE A MONTH, AT 25°C
AUTOMATIC POWER-FAIL CHIP DESELECT AND WRITE PROTECTION
WRITE PROTECT VOLTAGES (VPFD = Power-fail Deselect Voltage):
    M48T08: VCC = 4.75 to 5.5V 4.5V VPFD 4.75V
    M48T18/T08Y: VCC = 4.5 to 5.5V 4.2V VPFD 4.5V
SOFTWARE CONTROLLED CLOCK CALIBRATION FOR HIGH ACCURACY APPLICATIONS
SELF-CONTAINED BATTERY AND CRYSTAL IN THE CAPHAT™ DIP PACKAGE
PACKAGING INCLUDES A 28-LEAD SOIC AND SNAPHAT® TOP (to be ordered separately)
SOIC PACKAGE PROVIDES DIRECT CONNECTION FOR A SNAPHAT TOP WHICH CONTAINS THE BATTERY AND CRYSTAL
PIN AND FUNCTION COMPATIBLE WITH DS1643 and JEDEC STANDARD 8K x8 SRAMs
RoHS COMPLIANCE Lead-free components are compliant with the RoHS Directive.


Pinout

Connection Diagram


Specifications

Symbol
Parameter
Value
Unit
TA
 Ambient Operating Temperature
0 to 70
°C
TSTG
 Storage Temperature (VCC Off, Oscillator Off)
40 to 85
°C
TSLD(1,2,3)
 Lead Solder Temperature for 10 seconds
260
°C
VCC
 Supply Voltage
0.3 to 7.0
V
V
VIO
 Input or Output Voltages
0.3 to 7.0
V
IO
 Output Current
20
mA
PD
 Power Dissipation
1
W



Description

The M48T08/18/08Y TIMEKEEPER® RAM is an 8K x 8 non-volatile static RAM and real time clock which is pin and functional compatible with the DS1643. The monolithic chip of M48T08/18/08Y is available in two special packages to provide a highly integrated battery backed-up memory and real time clock solution.

The M48T08/18/08Y is a non-volatile pin and function equivalent to any JEDEC standard 8K x 8 SRAM. It also easily fits into many ROM, EPROM, and EEPROM sockets, providing the non-volatility of PROMs M48T08/18/08Y 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 M48T08/18/08Y silicon with a quartz crystal and a long- life lithium button cell in a single package.

The 28-pin, 330mil SOIC M48T08/18/08Y provides sockets with gold plated contacts at both ends for direct connection to a separate SNAPHAT® housing containing the battery and crystal. The unique design of M48T08/18/08Y allows the SNAPHAT battery package to be mounted on top of the SOIC M48T08/18/08Y package after the completion of the surface mount process. Insertion of the SNAPHAT housing after reflow prevents potential battery and crystal damage due to the high temperatures required for device surfacemounting. The SNAPHAT housing is keyed to prevent
reverse insertion.

The SOIC M48T08/18/08Y 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 numbe  is "M4T28-BR12SH" or "M4T32-BR12SH" (see Table 17., page 25).




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