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Real-Time Clock With Battery Backed Non-Volatile RAM

Package Information

CAD Model: View CAD Model
Pkg. Type: SOIC
Pkg. Code: DCG8
Lead Count (#): 8
Pkg. Dimensions (mm): 4.9 x 3.9 x 1.5
Pitch (mm): 1.27

Environmental & Export Classifications

Moisture Sensitivity Level (MSL) 1
Pb (Lead) Free Yes
ECCN (US) EAR99
HTS (US) 8542.39.0090

Product Attributes

Lead Count (#) 8
Carrier Type Reel
Moisture Sensitivity Level (MSL) 1
Qty. per Reel (#) 3000
Qty. per Carrier (#) 0
Package Area (mm²) 19.1
Pkg. Dimensions (mm) 4.9 x 3.9 x 1.5
Core Voltage (V) 1.8V, 2.5V, 3.3V, 5V, 5.5V
Freq. Accuracy Init. (± PPM) 10
Input Type Crystal
Inputs (#) 1
Output Voltage (V) 1.8V, 2.5V, 3.3V, 5V, 5.5V
Pitch (mm) 1.27
Pb (Lead) Free Yes
Pb Free Category e3 Sn
Temp. Range (°C) -40 to 85°C
Advanced Features 56-Byte NV RAM
Freq. Stability Total (± PPM) 10
Input Freq (KHz) 32.768 - 32.768
Input Freq (MHz) 0.032768 - 0.032768
Length (mm) 4.9
MOQ 3000
Output Banks (#) 1
Output Freq Range (KHz) 0.001 - 0.001, 4.096 - 4.096, 8.192 - 8.192, 32.768 - 32.768
Output Freq Range (MHz) 1.0E-6 - 1.0E-6, 0.004096 - 0.004096, 0.008192 - 0.008192, 0.032768 - 0.032768
Output Type LVCMOS
Outputs (#) 1
Pkg. Type SOIC
Power Consumption Typ (mW) 10
Prog. Clock Yes
Prog. Interface I2C
Published No
Reel Size (in) 13
Requires Terms and Conditions Does not require acceptance of Terms and Conditions
Tape & Reel Yes
Thickness (mm) 1.5
Width (mm) 3.9
Xtal Freq (KHz) 32.768 - 32.768

Description

The 1338 is a serial real-time clock (RTC) device that consumes ultra-low power and provides a full binary-coded decimal (BCD) clock/calendar with 56 bytes of battery backed Non-Volatile Static RAM. The clock/calendar provides seconds, minutes, hours, day, date, month, and year information. The clock operates in either the 24-hour or 12-hour format with AM/PM indicator. The end of the month date is automatically adjusted for months with fewer than 31 days, including corrections for leap year. Access to the clock/calendar registers is provided by an I2C interface capable of operating in fast I2C mode. Built-in Power-sense circuitry detects power failures and automatically switches to the backup supply, maintaining time and date operation.