(China (Mainland))
Product Summary
DESCRIPTION:The M48T35/35Y TIMEKEEPER? RAM is a 32Kb x8 non-volatile static RAM and real time clock. The
monolithic chip is available in two special packages to provide a highly integrated battery backed-up memory and real time clock solution.
The M48T35/35Y is a non-volatile pin and function equivalent to any JEDEC standard 32Kb x8 SRAM. It also easily fits into many ROM, EPROM,
and EEPROM sockets, providing the non-volatility of PROMs 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 M48T35/35Y silicon with a quartz crystal and a long life lithium button cell in a single package.
The 28 pin 330mil SOIC provides sockets with 
gold plated contacts at both ends for direct con
Parametrics
Absolute Maximum Ratings
TA Ambient Operating Temperature Grade 1 :0 to 70 °C
TA Ambient Operating Temperature Grade 6 :–40 to 85 °C
TSTG Storage Temperature (VCC Off, Oscillator Off) :–40 to 85 °C
TSLD (2)Lead Solder Temperature for 10 seconds :260 °C
VIO Input or Output Voltages :–0.3 to 7 V
VCC Supply Voltage :–0.3 to 7 V
IO Output Current :20 mA
PD Power Dissipation 1 W
Features
Features
1. INTEGRATED ULTRA LOW POWER SRAM, REAL TIME CLOCK, POWER-FAIL CONTROL CIRCUIT and BATTERY
2. BYTEWIDE? RAM-LIKE CLOCK ACCESS3. BCD CODED YEAR, MONTH, DAY, DATE, HOURS, MINUTES and SECONDS
4. FREQUENCY TEST OUTPUT for REAL TIME CLOCK
5. AUTOMATIC POWER-FAIL CHIP DESELECT and WRITE PROTECTION
6. WRITE PROTECT VOLTAGES(VPFD = Power-fail Deselect Voltage):
– M48T35: 4.5V ≤ VPFD ≤ 4.75V
– M48T35Y: 4.2V ≤ VPFD ≤ 4.5V
7. SELF-CONTAINED BATTERY and CRYSTAL in the CAPHAT DIP PACKAGE
8. SOIC PACKAGE PROVIDES DIRECT CONNECTION for a SNAPHAT HOUSING CONTAINING the BATTERY and CRYSTAL
9. SNAPHAT? HOUSING (BATTERY and CRYSTAL) is REPLACEABLE
10. PIN and FUNCTION COMPATIBLE with JEDEC STANDARD 32Kb x8 SRAMs
| Image | Part No | Mfg | Description |  |
Pricing (USD) |
Quantity | ||||
|---|---|---|---|---|---|---|---|---|---|---|
 |
 M48T35Y-70MH6E |
STMicroelectronics |
Real Time Clock 256K (32Kx8) 70ns |
Data Sheet |
Negotiable |
|
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|
M48T35Y-70MH6F |
STMicroelectronics |
Real Time Clock 256K (32Kx8) 70ns |
Data Sheet |
Negotiable |
|
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