1338C-18SRI IDT, 1338C-18SRI Datasheet
1338C-18SRI
Specifications of 1338C-18SRI
Related parts for 1338C-18SRI
1338C-18SRI Summary of contents
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... REAL-TIME CLOCK WITH BATTERY BACKED NON-VOLATILE RAM General Description The IDT1338 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 ...
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... C and data can be written and read. No connect. These pins are unused and must be connected to ground for proper operation. (16-pin SOIC SCL SQW/OUT 2 15 VCC 3 14 IDT 1338C pin may prevent proper operation backup supply is BAT 2 C serial interface ...
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... Ct1 and Ct2 are the PCB trace capacitances between the crystal and the device pins the shunt capacitance of the crystal (as specified in the crystal manufacturer's datasheet or measured using a network analyzer). Note: IDT1338CSRI integrates a standard 32.768 kHz crystal in the package and contributes an additional frequency error of 10ppm at nominal +25°C. T ...
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... This ground island can be connected at one point to the GND layer. This helps to keep noise generated by IDT® REAL-TIME CLOCK WITH BATTERY BACKED NON-VOLATILE RAM 4 the oscillator circuit locally on this separated island. The ground connections for the load capacitors and the oscillator should be connected to this island ...
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... Fall Time PF(MAX) V Rise Time PF(MIN) Note: This delay applies only if the oscillator is running. If the oscillator is disabled or stopped, no power-up delay occurs. IDT® REAL-TIME CLOCK WITH BATTERY BACKED NON-VOLATILE RAM 5 Table 1. Power Control V is greater than the internal clock ...
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... Therefore important to enable the oscillator ( during initial configuration. The IDT1338 runs in either 12-hour or 24-hour mode. Bit 6 of the hours register is defined as the 12-hour or 24-hour mode-select bit. When high, the 12-hour mode is selected. In the 12-hour mode, bit 5 is the AM/PM bit, with logic high ...
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... Table 5. Square Wave Output OUT RS1 RS0 SQW Output IDT® REAL-TIME CLOCK WITH BATTERY BACKED NON-VOLATILE RAM 7 Bit 5 Bit 4 Bit 3 OSF SQWE SQWE 4.096 kHz 1 8.192 kHz 1 32.768 kHz ...
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... The IDT1338 works in both modes. Connections to the bus are made via the open-drain I/O lines SDA and SCL. The following bus protocol has been defined (see the “Data ...
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... However, in this mode, the direction bit indicates that the transfer direction is reversed. Serial data is transmitted on SDA by the IDT1338 while the serial clock is input on SCL. START and STOP conditions are recognized as the beginning and end of a serial transfer (see the “Data Read– ...
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... Data Write – Slave Receiver Mode Data Read (from current Pointer location) – Slave Transmitter Mode Data Read (Write Pointer, then Read) – Slave Receive and Transmit IDT® REAL-TIME CLOCK WITH BATTERY BACKED NON-VOLATILE RAM 10 RTC IDT1338 REV R 020713 ...
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... Stresses above the ratings listed below can cause permanent damage to the IDT1338. These ratings, which are standard values for IDT commercially rated parts, are stress ratings only. Functional operation of the device at these or any other conditions above those indicated in the operational sections of the specifications is not implied. ...
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... SQW/OUT OFF V Current (OSC ON); V BAT SQW/OUT ON V Data-Retention Current BAT (OSC OFF); V =3.7 V BAT IDT® REAL-TIME CLOCK WITH BATTERY BACKED NON-VOLATILE RAM -40°C to +85°C, unless otherwise noted. Typical values are at V Symbol I Note Note 4 LO > ...
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... Note 2: All voltages referenced to ground. Note 3: SCL only. Note 4: SDA and SQW/OUT. Note 5: I —SCL clocking at max frequency = 400 kHz. CCA Note 6: Specified with the I IDT® REAL-TIME CLOCK WITH BATTERY BACKED NON-VOLATILE RAM -40°C to +85°C) (Note 1) Symbol Conditions f Fast Mode SCL ...
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... V Timing Diagram IDT® REAL-TIME CLOCK WITH BATTERY BACKED NON-VOLATILE RAM 14 need only be met if the device does not stretch the LOW period (t is the period of time the oscillator must be stopped for the OSF flag to be set over the < ...
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... VBat (V) IBAT vs Temperature 800 700 600 500 400 -40 - Temperature (C) IDT® REAL-TIME CLOCK WITH BATTERY BACKED NON-VOLATILE RAM SQWE=1 SQWE 2.8 3.3 2.7 32767.950000 32767.900000 SQWE=1 32767.850000 SQWE=0 32767.800000 32767.750000 60 80 Icc vs Vcc (IDT1338-31) 3 ...
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... Thermal Characteristics for 8SOIC Parameter Thermal Resistance Junction to Ambient Thermal Resistance Junction to Case Thermal Characteristics for 16SOIC Parameter Thermal Resistance Junction to Ambient Thermal Resistance Junction to Case IDT® REAL-TIME CLOCK WITH BATTERY BACKED NON-VOLATILE RAM 16 Symbol Conditions Min. Still air JA JC Symbol Conditions Min ...
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... YYWW is the last two digits of the year and week that the part was assembled. 5. “G” denotes RoHS compliant package. 6. “I” denotes industrial grade. 7. Bottom marking: country of origin if not USA. IDT® REAL-TIME CLOCK WITH BATTERY BACKED NON-VOLATILE RAM 17 Marking Diagram 18GI YWW$ IDT1338-18DVGI ...
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... REAL-TIME CLOCK WITH BATTERY BACKED NON-VOLATILE RAM Package Outline and Package Dimensions Package dimensions are kept current with JEDEC Publication No INDEX AREA IDT® REAL-TIME CLOCK WITH BATTERY BACKED NON-VOLATILE RAM 18 (8-pin SOIC, 150 Mil. Body) Symbol SEATING ...
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... REAL-TIME CLOCK WITH BATTERY BACKED NON-VOLATILE RAM Package Outline and Package Dimensions Package dimensions are kept current with JEDEC Publication No IDT® REAL-TIME CLOCK WITH BATTERY BACKED NON-VOLATILE RAM 19 (8-pin MSOP, 3.00 mm Body) Symbol ...
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... Package Outline and Package Dimensions Package dimensions are kept current with JEDEC Publication No INDEX AREA IDT® REAL-TIME CLOCK WITH BATTERY BACKED NON-VOLATILE RAM 20 (16-pin SOIC, 300 mil Body) Symbol aaa *For reference only. Controlling dimensions in mm. A ...
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... IDT. IDT reserves the right to change any circuitry or specifications without notice. IDT does not authorize or warrant any IDT product for use in life support devices or critical medical instruments. ...
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... Added new note to Part Ordering information pertaining to RoHS compliance and Pb-free devices. C J.Sarma 04/03/04 combined -3 and -33 parts to -31 D J.Sarma 05/19/08 The part number for 16pin RoHS complaint part has now changed from IDT1338C-31SOGI to IDT1338C-31SRI and the IDT1338C-18SOGI changed to IDT1338C-18SRI E J.Sarma 10/29/08 F J.Sarma 11/10/08 Updated Block Diagram; Typical Operating Characteristics charts. ...
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... Integrated Device Technology, Inc. All rights reserved. Product specifications subject to change without notice. IDT, ICS, and the IDT logo are trademarks of Integrated Device Technology, Inc. Accelerated Thinking is a service mark of Integrated Device Technology, Inc. All other brands, product names and marks are or may be trademarks or registered trademarks used to identify products or services of their respective owners ...