CP2400AB Silicon Laboratories Inc, CP2400AB Datasheet - Page 69

• Manufacturer Part Number: CP2400AB
• Description: BOARD EVAL SPI LCD DRIVER CP2400
• Manufacturer: Silicon Laboratories Inc

Specifications of CP2400AB

• Main Purpose: LCD Development
• Embedded: No
• Utilized Ic / Part: CP2400
• Primary Attributes: I²C, SMBus Interfaces
• Secondary Attributes: Up to 128 segments
• Product: Microcontroller Accessories
• Core Processor: CP2400
• Clock Speed: 20 MHz
• Interface Type: SPI
• Timers: 2
• Operating Supply Voltage: 1.8 V to 3.6 V
• Cpu Core: CP2400
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Contains lead / RoHS non-compliant
• Other names: 336-1857

11. SmaRTClock (Real Time Clock)
CP2400/1/2/3 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 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 to
wake up from the ultra low power mode.
XTAL2
Registers
Programmable Load Capacitors
Internal
SmaRTClock State Machine
SmaRTClock Oscillator
Figure 11.1. SmaRTClock Block Diagram
CAPTUREn
RTC0XCN
RTC0XCF
ALARMn
RTC0CN
XTAL1
Interrupt
Rev. 1.0
RTC0ADR
RTC0KEY
RTC0DAT
Registers
Interface
SmaRTClock
SmaRTClock
32-Bit
Timer
CP2400/1/2/3
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