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Product Detailed Parameters
- Description：IC RTC CLK/CALENDAR I2C 8SOIC
- Series：-
- Package：Tube
- Mfr：Renesas Electronics Corporation
- Type：Clock/Calendar
- Features：Alarm, Leap Year, Square Wave Output
- Memory Size：-
- Time Format：HH:MM:SS (12/24 hr)
- Date Format：YY-MM-DD-dd
- Interface：I2C, 2-Wire Serial
- Voltage - Supply：1.8V ~ 5.5V
- Voltage - Supply, Battery：-
- Current - Timekeeping (Max)：0.3µA @ 1.3V ~ 1.8V
- Operating Temperature：-40°C ~ 85°C
- Mounting Type：Surface Mount
- Package / Case：8-SOIC (0.154", 3.90mm Width)
- Supplier Device Package：8-SOIC
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Overview
The Renesas 1337AGDCGI is a low-power serial real-time clock (RTC) IC featuring an I2C bus interface. It operates within a supply voltage range of 1.8 V to 5.5 V and supports industrial temperature conditions from -40°C to +85°C. The device counts seconds, minutes, hours, day, date, month, and year, with automatic leap-year compensation valid until 2100. It includes two programmable time-of-day alarms and a programmable square-wave output that defaults to 32 kHz upon power-up. The component is housed in an 8-pin SOIC package.
Feature Summary
- I2C Serial Interface supporting Normal and Fast modes
- Automatic date adjustment for months with fewer than 31 days and leap years
- Two programmable time-of-day alarms
- Programmable square-wave output defaulting to 32 kHz
Applications
- Industrial systems requiring precise timekeeping
- Embedded devices needing battery-backed real-time tracking
- Data logging equipment with date and time stamping requirements
Procurement Notes
Verify the specific suffix 'G' indicates RoHS compliance and lead-free status according to Renesas documentation. Confirm the 'I' suffix corresponds to the industrial temperature grade (-40°C to +85°C). Ensure the 'DCGI' designation matches the 8-pin SOIC package type required for the design. Check current availability as distribution status may vary.
Selection Notes
Select this component when an I2C-connected RTC is required for 1.8V to 5.5V systems. It is suitable for designs needing automatic calendar calculations without external microcontroller intervention. Consider the 8-pin SOIC form factor for surface-mount assembly constraints. Verify if the integrated 32 kHz output meets oscillator requirements or if an external crystal is needed.
Part Context
This part belongs to the 1337AGD series of real-time clocks manufactured by Renesas Electronics. The series offers various packaging options including MSOP, SOIC, and QFN variants. The 1337AGDCGI specifically denotes the SOIC-8 package variant with industrial temperature rating and I2C compatibility.
Replacement Considerations
Consult official Renesas cross-reference lists for verified substitutes. Generic RTC replacements may lack identical alarm configurations or voltage ranges. Validate pinout compatibility before substituting to ensure proper I2C connection and power supply alignment.
