C8051F930-TB Silicon Laboratories Inc, C8051F930-TB Datasheet - Page 196
![BOARD TARGET/PROTO W/C8051F930](/photos/9/25/92560/c8051f930-tb_sml.jpg)
C8051F930-TB
Manufacturer Part Number
C8051F930-TB
Description
BOARD TARGET/PROTO W/C8051F930
Manufacturer
Silicon Laboratories Inc
Type
MCUr
Specifications of C8051F930-TB
Contents
Board
Processor To Be Evaluated
C8051F930
Processor Series
C8051F9xx
Data Bus Width
8 bit
Interface Type
I2C, UART, SPI
Maximum Operating Temperature
+ 85 C
Minimum Operating Temperature
- 40 C
Operating Supply Voltage
0.9 V to 3.6 V
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
For Use With/related Products
C8051F930
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Other names
336-1472
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C8051F93x-C8051F92x
20. SmaRTClock (Real Time Clock)
C8051F93x-C8051F92x devices include an ultra low power 32-bit SmaRTClock Peripheral (Real Time
Clock) with alarm. The SmaRTClock has a dedicated 32 kHz oscillator that can be configured for use with
or without a crystal. No external resistor or loading capacitors are required. The on-chip loading capacitors
are programmable to 16 discrete levels allowing compatibility with a wide range of crystals. The SmaRT-
Clock can operate directly from a 0.9–3.6 V battery voltage and remains operational even when the device
goes into its lowest power down mode.
The SmaRTClock allows a maximum of 36 hour 32-bit independent time-keeping when used with a
32.768 kHz Watch Crystal. The SmaRTClock provides an Alarm and Missing SmaRTClock events, which
could be used as reset or wakeup sources. See Section “18. Reset Sources” on page 180 and Section
“14. Power Management” on page 156 for details on reset sources and low power mode wake-up sources,
respectively.
196
XTAL4
Registers
Programmable Load Capacitors
Internal
SmaRTClock State Machine
SmaRTClock Oscillator
Figure 20.1. SmaRTClock Block Diagram
CAPTUREn
RTC0XCN
RTC0XCF
RTC0PIN
ALARMn
RTC0CN
XTAL3
Wake-Up
Interrupt
Rev. 1.1
RTC0KEY
RTC0ADR
RTC0DAT
Registers
Interface
SmaRTClock
SmaRTClock
32-Bit
Timer
Power/
Clock
Mgmt
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