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M41T94MQ6F
M41T94MQ6F - Brand New STMicroelectronics Real-time Clocks (RTC)
Credit Card - One-month free return and one year warranty.
- Full or Partial Refund, if the item is not as described
- Full Refund if you don't receive your order
Description
The M41T94 is a serial real-time clock with 44 bytes of NVRAM and a RESET
output. A built-in 32,768Hz oscillator (external crystal controlled) and 8
bytes of the SRAM (see Table 4 on page 19) are used for the clock/calendar
function and are configured in binary coded decimal (BCD) format.
An additional 12 bytes of RAM provide status/control of Alarm, Watchdog and
Square Wave functions. Addresses and data are transferred serially via a
serial SPI interface. The built-in address register is incremented
automatically after each WRITE or READ data byte. The M41T94 has a built-in
power sense circuit which detects power failures and automatically switches to
the battery supply when a power failure occurs. The energy needed to sustain
the SRAM and clock operations can be supplied by a small lithium button-cell
supply when a power failure occurs. Functions available to the user include a
non-volatile, time-of-day clock/calendar, Alarm interrupts, Watchdog timer and
programmable Square Wave output.
Features
■ Counters for tenths/hundredths of seconds, seconds, minutes, hours, day,
date, month, year, and century
■ 32KHz crystal oscillator integrating load capacitance (12.5pF) providing
exceptional oscillator stability and high crystal series resistance operation
■ Serial peripheral interface (2MHz SPI)
■ Ultra-low battery supply current of 500nA (max)
■ 2.7 to 5.5V operating voltage
■ 2.5 to 5.5V oscillator operating voltage
■ Battery low flag
■ Automatic switchover and deselect circuitry
■ 44 bytes of general purpose RAM
■ Programmable alarm and interrupt function (valid even during battery back-up
mode)
■ Accurate programmable watchdog timer (from 62.5ms to 128s)
■ Microprocessor power-on reset
■ Choice of power-fail deselect voltages (VCC = 2.7 to 5.5V):
– THS = VSS; 2.55V ≤ VPFD ≤ 2.70V
– THS = VCC; 4.20V ≤ VPFD ≤ 4.50V
■ Packaging includes a 28-lead SOIC and SNAPHAT® top (to be ordered
separately) or 16-lead SOIC
■ 28-lead SOIC package provides direct connection for a SNAPHAT top which
contains the battery and crystal
■ RoHS compliant
– Lead-free second level interconnect
Shipping
| First item | Additional item | Service | Description |
|---|---|---|---|
| $0.00 | Free | Free Shipping | Estimated 15-30 business days via Registered Air Mail or others |
| $27.50 | Free | Expedited Shipping | Estimated delivery time is 3-5 business days, with some areas possibly taking 6-9 business days depending on the shipping address. The main courier companies include but are not limited to UPS, DHL, and FedEx. |
| $0.00 | Free | Buyer cooperating carrier | Using buyer's cooperating carrier. Buyer should create a shipping label and share it to us. And then we will call carrier for pickup |
| $38.00 | Free | Expedited Shipping | Estimated delivery time is 3-5 business days, with some areas possibly taking 6-9 business days depending on the shipping address. The main courier companies include but are not limited to UPS, DHL, and FedEx. |
Delivery
- The transportation time may be delayed due to customs clearance, local holidays or abnormal events.
- The estimated time is based on the fastest speed provided by commercial couriers (DHL, FedEx, UPS etc).
- The estimated time does not include the lead time of the item. The lead time of most items is 2–5 business days. If more than 5 working days are needed, we will manually confirm with you.
| Flag | Country | Express Delivery | Standard Delivery |
|---|---|---|---|
 | United States | 3 - 5 days | 10-15 days |
 | Canada | 3 - 5 days | 10-20 days |
 | Mexico | 3 - 5 days | 10-17 days |
 | Germany | 3 - 5 days | 10-12 days |
 | Italy | 3 - 5 days | 10-15 days |
 | United Kingdom | 3 - 5 days | 10-12 days |
Estimated Delivery
This item requires 2-5 business days for processing before shipping after payment is confirmed. And depending on the destination and shipping method.
Return Policy
| Return window | Refund type | Return shipping |
|---|---|---|
| 60 days after receiving item | Money Back or Replacement | Buyer pays for return shipping |
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