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M41T315Y

Features: ` 3.0V, 3.3V, OR 5V OPERATING VOLTAGE` REAL TIME CLOCK KEEPS TRACK OF TENTHS/HUNDREDTHS OF SECONDS, SECONDS, MINUTES, HOURS, DAYS, DATE OF THE MONTH, MONTHS, AND YEARS` AUTOMATIC LEAP YEAR CORRECTION VALID UP TO 2100` AUTOMATIC SWITCH-OVER AND DESELECT CIRCUITRY` CHOICE OF POWER-FAIL DES...

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SeekIC No. : 004405255 Detail

M41T315Y: Features: ` 3.0V, 3.3V, OR 5V OPERATING VOLTAGE` REAL TIME CLOCK KEEPS TRACK OF TENTHS/HUNDREDTHS OF SECONDS, SECONDS, MINUTES, HOURS, DAYS, DATE OF THE MONTH, MONTHS, AND YEARS` AUTOMATIC LEAP YEAR...

M41T315Y Data Sheet

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Part Number:
M41T315Y
Supply Ability:
5000

Price Break

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

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Upload time: 2024/11/27

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Product Details

Description



Features:

` 3.0V, 3.3V, OR 5V OPERATING VOLTAGE
` REAL TIME CLOCK KEEPS TRACK OF TENTHS/HUNDREDTHS OF SECONDS, SECONDS, MINUTES, HOURS, DAYS, DATE  OF THE MONTH, MONTHS, AND YEARS
` AUTOMATIC LEAP YEAR CORRECTION VALID UP TO 2100
` AUTOMATIC SWITCH-OVER AND DESELECT CIRCUITRY
` CHOICE OF POWER-FAIL DESELECT VOLTAGES:
    (VPFD = Power-fail Deselect Voltage)
    M41T315Y: VCC = 4.5 to 5.5V
                  4.25V VPFD 4.50V
    M41T315V: VCC = 3.0 to 3.6V
                  2.80V VPFD 2.97V
     M41T315W: VCC = 2.7 to 3.3V
                    2.60V VPFD 2.70V
` NO ADDRESS SPACE REQUIRED TO COMMUNICATE WITH RTC
` PROVIDES NONVOLATILE SUPERVISOR FUNCTIONS FOR BATTERY BACKUP OF SRAM
` FULL ±10% VCC OPERATING RANGE
` INDUSTRIAL OPERATING TEMPERATURE RANGE (40 to +85 )
` ULTRA-LOW BATTERY SUPPLY CURRENT OF 500nA (max)
` OPTIONAL PACKAGING INCLUDES A 28- LEAD SOIC and SNAPHAT® TOP (to be ordered separately)
` SNAPHAT PACKAGE PROVIDES DIRECT CONNECTION FOR A SNAPHAT TOP, 
    WHICH CONTAINS THE BATTERY AND RYSTAL 


Pinout

Connection Diagram


Specifications

Symbol
Parameter
Value
Unit
TA Ambient Operating Temperature
40 to 85
TSTG Storage Temperature (VCC Off, Oscillator Off) SNAPHAT
40 to 85
SOIC
55 to 125
TSLD (1) Lead Solder Temperature for 10 seconds
260
VIO Input or Output Voltage
0.3 to 7.0
V
VCCI Supply Voltage (on any pin relative to Ground) M41T315Y
0.3 to 4.6
V
M41T315V/W
-0.3 to VCC + 0.3
V
IO Output Current
20
mA
PD Power Dissipation
1
W

Note: 1. For SO package, standard (SnPb) lead finish: Reflow at peak temperature of 225°C (total thermal budget not to exceed 180°C for between 90 to 150 seconds).
2. For SO package, Lead-free (Pb-free) lead finish: Reflow at peak temperature of 260°C (total thermal budget not to exceed 245°C for greater than 30 seconds).
CAUTION: Negative undershoots below 0.3V are not allowed on any pin while in the Battery Back-up mode.
CAUTION: Do NOT wave solder SOIC to avoid damaging SNAPHAT sockets.



Description

The M41T315Y/V/W RTC Supervisor is a combination of a CMOS TIMEKEEPER® and a nonvolatile memory supervisor. Power is constantly monitored by the memory supervisor. In the event of power instability or absence, an external battery maintains the timekeeping operation and provides power for a CMOS static RAM by switching on and invoking write protection to prevent data corruption in the memory and RTC.

The clock keeps track of tenths/hundredths of seconds, seconds, minutes, hours, day, date, month, and year information. The last day of the month is automatically adjusted for months with less than 31 days, including leap year correction.

The clock operates in one of two formats: a 12-hour mode with an AM/PM indicator; or  a 24-hour mode

The nonvolatile supervisor supplies all the necessary support circuitry to convert a CMOS RAM to a nonvolatile memory. The M41T315Y/V/W can be interfaced with RAM without leaving gaps in memory.

The M41T315Y/V/W is supplied in a 28-lead SOIC
SNAPHAT® package (which integrates both crystal and battery in a single SNAPHAT top) or a-16 pin SOIC. The 28-pin, 330mil SOIC 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 allows the SNAPHAT battery/crystal package to be mounted on top of the SOIC 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 surface- mounting. The SNAPHAT housing is also keyed to prevent reverse insertion.

The 28-pin SOIC and battery/crystal packages of M41T315Y/V/W 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 number is "M4TXX-BR12SH" (see Table 17., page 22).

Caution: Do not place the SNAPHAT battery/crystal top in conductive foam, as this will drain the lithium button-cell battery.




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