UM0851 datasheet(38/245 Pages) STMICROELECTRONICS

38 / 245 page

Platform section

UM0851

38/245

Doc ID 16604 Rev 2

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uart-pl011

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spear-ssp.0

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spear-ssp.1

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spear-i2c

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<NULL>

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spear-ssp.2

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spear-dmac

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spear-snor

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rtc0

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<NULL>

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spear-udc

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ohci_hcd:usb3

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102

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ehci_hcd:usb1

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ohci_hcd:usb4

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ehci_hcd:usb2

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3.3

Real time clock (RTC) driver

3.3.1

Hardware overview

The Real-time clocks (RTC) is used to keep track of days, dates and time, including

century, year, month, hour, minutes and seconds. It supports the use of a battery switchover

circuit, enabling it to keep track of time even when power is off.

Features:

●

Time-of-day clock in 24 hours mode

●

Calendar

●

Alarm capability

●

Self-isolation mode, which allows RTC to work even with no power supplied at the rest

of the device.

Table 12.

Format of interrupt source list

IRQ No

No of interrupts

Interrupt string passed in request_irq

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spear-snor

UM0851 Datasheet(PDF) 38 Page - STMicroelectronics

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