STM32F051C6 STMicroelectronics, STM32F051C6 Datasheet - Page 14

• Manufacturer Part Number: STM32F051C6
• Description: Entry-level ARM Cortex-M0 MCU with 32 Kbytes Flash, 48 MHz CPU, motor control and CEC functions
• Manufacturer: STMicroelectronics

Specifications of STM32F051C6

• Voltage Range: 2.0 V to 3.6 V
• Conversion Range: 0 to 3.6V
• Systick Timer: 24-bit downcounter

Functional overview
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Real-time clock (RTC) and backup registers
The RTC and the 5 backup registers are supplied through a switch that takes power either
on V
registers used to store 20 bytes of user application data when V
They are not reset by a system or power reset, or when the device wakes up from Standby
mode.
The RTC is an independent BCD timer/counter. Its main features are the following:
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The RTC clock sources can be:
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DD
Calendar with subsecond, seconds, minutes, hours (12 or 24 format), week day, date,
month, year, in BCD (binary-coded decimal) format.
Automatically correction for 28, 29 (leap year), 30, and 31 day of the month.
Programmable alarm with wake up from Stop and Standby mode capability.
On-the-fly correction from 1 to 32767 RTC clock pulses. This can be used to
synchronize it with a master clock.
Digital calibration circuit with 1 ppm resolution, to compensate for quartz crystal
inaccuracy.
2 anti-tamper detection pins with programmable filter. The MCU can be woken up from
Stop and Standby modes on tamper event detection.
Timestamp feature which can be used to save the calendar content. This function can
triggered by an event on the timestamp pin, or by a tamper event. The MCU can be
woken up from Stop and Standby modes on timestamp event detection.
A 32.768 kHz external crystal
A resonator or oscillator
The internal low-power RC oscillator (typical frequency of 40 kHz)
The high-speed external clock divided by 32.
supply when present or through the V
Doc ID 018746 Rev 2
BAT
pin. The backup registers are five 32-bit
DD
power is not present.
STM32F051x