m41t66 STMicroelectronics, m41t66 Datasheet - Page 7

• Manufacturer Part Number: m41t66
• Description: Real-time Clocks
• Manufacturer: STMicroelectronics

M41T66
Figure 4.
1. Open drain
2. For a crystal with a load capacitance (C
3. It can also be connected to another power supply.
4. Due to the output buffer circuitry used for the SQW output, this pin must not be taken to a voltage greater
must be added to achieve better clock accuracy.
than V
recommended.
CC
. Diode required on SQW pin for SuperCap™ (or battery) backup. Low threshold BAT42 diode
Hardware hookup for SuperCap™ backup operation
L
) of 12.5 pF, two parallel external 12.5 pF capacitors (C
Description
1
and C
2
)
7/33