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Serial Real-Time Clocks
M41T94: ST's First SPI-Based Serial Real-Time Clock

M41T94 Product Page

M41T94 Additional Technical Information

M41T94 Hardware HookupThe M41T94 is ST's first SPI-based Serial RTC. Besides SPI bus (Serial Peripheral Interconnect), this feature-rich device provides many Microprocessor Supervisor functions including Alarm and Watchdog, Power-on Reset/Low-Voltage Detect, Push-Button Reset, and Battery Monitor.

Plus it has integrated Battery Switchover and Write Protect circuits, making it easier to use and more reliable.

SPI-based Serial RTC with Programmable Alarm and Watchdog
Time of Day/Date
Power-on Reset/Low-Voltage Detect
44 Bytes of general-purpose NVRAM
Automatic Battery Switchover and Write Protect Circuits
Programmable Power-fail Detection - 2.65 or 4.40V
Programmable Square Wave Generator - 1Hz to 32KHz
Battery Monitor
2.7 to 5.5V Operation
–40°C to +85°C
Packaging
 

16-lead SOIC (Lead-free)

28-lead SOIC with SNAPHAT® Top (Lead-free)
Product Selector
Sales Type
' M41T94MH6 SOH28
' M41T94MH6E SOH28
' M41T94MH6F SOH28
' M41T94MH6TR SOH28
' M41T94MQ6 SO16
' M41T94MQ6E SO16
' M41T94MQ6F SO16
' M41T94MQ6TR SO16
Serial RTC Product Selector
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M41T94 Applications

Medical

DVD
Metering
POS
Television
Anything with an MCU
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More Information

M41T94 Datasheet
Serial RTC Lead-free Packages Program
M41T94 Additional Technical Information