M48T35
M48T35Y
5V, 256 Kbit (32 Kb x8) TIMEKEEPER® SRAM
FEATURES SUMMARY
â– INTEGRATED, ULTRA LOW POWER SRAM,
REAL TIME CLOCK, POWER-FAIL
CONTROL CIRCUIT AND BATTERY
â– BYTEWIDEâ„¢ RAM-LIKE CLOCK ACCESS
â– BCD CODED YEAR, MONTH, DAY, DATE,
HOURS, MINUTES, AND SECONDS
â– FREQUENCY TEST OUTPUT FOR REAL
TIME CLOCK
â– AUTOMATIC POWER-FAIL CHIP
DESELECT AND WRITE PROTECTION
â– WRITE PROTECT VOLTAGES
(VPFD = Power-fail Deselect Voltage):
– M48T35: VCC = 4.75 to 5.5V
4.5V ≤ VPFD ≤ 4.75V
– M48T35Y: VCC = 4.5 to 5.5V
4.2V ≤ VPFD ≤ 4.5V
â– SELF-CONTAINED BATTERY AND
CRYSTAL IN THE CAPHATâ„¢ DIP
PACKAGE
â– SOIC PACKAGE PROVIDES DIRECT
CONNECTION FOR A SNAPHAT®
HOUSING CONTAINING THE BATTERY
AND CRYSTAL
■SNAPHAT® HOUSING (BATTERY AND
CRYSTAL) IS REPLACEABLE
â– PIN AND FUNCTION COMPATIBLE WITH
JEDEC STANDARD 32 Kb x 8 SRAMs
â– RoHS COMPLIANCE
Lead-free components are compliant with the
RoHS Directive.
Figure 1. 28-pin PCDIP, CAPHATâ„¢ Package
28
1
PCDIP28 (PC)
Battery/Crystal
CAPHAT
Figure 2. 28-pin SOIC Package
SNAPHAT (SH)
Battery/Crystal
28
1
SOH28 (MH)
December 2005
Rev 6.0
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