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Nisshinbo 2/3-Wire Interface Real-Time Clock ICs

Nisshinbo 2- and 3-Wire Interface Real-Time Clock (RTC) ICs perform serial transmission of time and calendar data to a CPU. The R2061 (3-wire interface) RTC is connected to the CPU by CE, SCLK, and SIO signal lines. R2061 includes a battery backup switchover circuit and a voltage detector. This Nisshinbo IC features 0.75V minimum supply voltage and 0.4µA low power consumption. The R2061 device also includes a periodic interrupt circuit that is configured to generate interrupt signals with six selectable interrupts ranging from 0.5 seconds to one month. The two-alarm interrupt circuits generate interrupt signals at preset times. 

The RS5C372A is a CMOS type RTC connected to the CPU via two wires. RS5C372A can generate periodic interrupt clock pulses lasting for an extended time (up to one month). The two incorporated systems can make alarm interruptions by days of the week, hours, and minutes. RS5C372A features an oscillation circuit driven at a constant voltage. As a result of this constant voltage, this RTC undergoes few voltage fluctuations and offers low current consumption of 0.5µA, typical at 3V.

Features

  • Alarm, calendar, clock, and timer interrupt functions
  • -40°C to +85°C operating temperature range
  • Available backup switching (R2061L01-E2)
  • Serial interface
  • 750mV to 6V supply voltage range
  • Types
    • 3-Wire (R2061L01-E2)
    • 2-Wire, I2C (RS5C372A-E2-F)
  • Binary-Coded Decimal (BCD) date format
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부품 번호 데이터시트 패키지/케이스 RTC 버스 인터페이스 배터리 예비 전환 공급 전압 - 최소 공급 전압 - 최대
RS5C372A-E2-F RS5C372A-E2-F 데이터시트 SSOP-8 Serial 2-Wire, I2C Backup Switching 1.7 V 6 V
R2061L01-E2 R2061L01-E2 데이터시트 QFN023023-16 Serial 3-Wire Backup Switching 750 mV 5.5 V
게시일: 2016-06-24 | 갱신일: 2022-03-11