ISL12058 Intersil Corporation, ISL12058 Datasheet
ISL12058
Available stocks
Related parts for ISL12058
ISL12058 Summary of contents
Page 1
... Low Power and Low Cost RTC with Alarm Function The ISL12058 device is a low power real time clock with clock/calendar, and alarm function. The oscillator uses an external, low-cost 32.768kHz crystal. The real time clock tracks time with separate registers for hours, minutes, and seconds ...
Page 2
... Ordering Information PART PART NUMBER MARKING ISL12058IBZ (Note 1) 12058 IBZ ISL12058IBZ-T* (Note 1) 12058 IBZ ISL12058IUZ (Note 1) 12058 ISL12058IUZ-T* (Note 1) 12058 ISL12058IRTZ (Note 1) 2058 ISL12058IRTZ-T* (Note 1) 2058 ISL12058IRUZ-T* (Note 2) 058 *Please refer to TB347 for details on reel specifications. NOTES: 1. These Intersil Pb-free plastic packaged products employ special Pb-free material sets, molding compounds/die attach materials, and 100% matte tin plate plus anneal (e3 termination finish, which is RoHS compliant and compatible with both SnPb and Pb-free soldering operations) ...
Page 3
... Interrupt Output /Frequency Output is a multi-functional pin that can be used as alarm interrupt or frequency output OUT pin. The function is set via the configuration register. This pin is open drain and requires an external pull-up resistor. It has a default output of 32.768kHz at power-up Power supply DD 3 ISL12058 DESCRIPTION FN6756.0 June 15, 2009 ...
Page 4
... OL Sinking 3mA Cpin SDA and SCL Pin Capacitance f SCL Frequency SCL 4 ISL12058 Thermal Information Thermal Resistance (Typical) 8 Lead SOIC (Note Lead MSOP (Note 3 Lead µTDFN (Note Lead TDFN (Notes Storage Temperature . . . . . . . . . . . . . . . . . . . . . . . .-65°C to +150°C Pb-free Reflow Profile . . . . . . . . . . . . . . . . . . . . . . . . .see link below http://www.intersil.com/pbfree/Pb-FreeReflow.asp Temperature = -40° ...
Page 5
... C specific parameters and are not production tested, however, they are used to set conditions for testing devices to validate specification. 11. Parts will work with SDA pull-up voltage above the V 12. Specified at +25°C. 5 ISL12058 Over the recommended operating conditions unless otherwise specified. (Continued) TEST CONDITIONS Any pulse narrower than the max spec is suppressed ...
Page 6
... HIGH to LOW Don’t Care: Changes Allowed N/A EQUIVALENT AC OUTPUT LOAD CIRCUIT FOR V 5.0V SDA, IRQ/F OUT FIGURE 1. STANDARD OUTPUT LOAD FOR TESTING THE DEVICE WITH V = 3.0V ISL12058 HIGH LOW t SU:DAT t HD:STA OUTPUTS Will be steady Will change from LOW ...
Page 7
... X1, X2 The X1 and X2 pins are the input and output, respectively inverting amplifier. An external 32.768kHz quartz crystal is used with the ISL12058 to supply a timebase for the real time clock. Refer to Figure 6. The device can also be driven directly from a 32.768kHz square wave source with peak to peak voltage from 0V to VDD at X1 pin with X2 pin floating ...
Page 8
... The RTC also has leap-year correction. The RTC also corrects for months having fewer than 31 days and has a bit that controls 24 hour or AM/PM format. When the ISL12058 powers up after the loss the clock will not begin incrementing until at DD least one byte is written to the clock register ...
Page 9
... At the end of a read, the master supplies a stop condition to end the operation and free the bus. After a read or write instruction, the address remains at the previous address +1 so the user can execute a current address read and continue reading the next register ISL12058 TABLE 1. REGISTER MEMORY MAP BIT ...
Page 10
... Years divisible by 100 are not leap years, unless they are also divisible by 400. This means that the year 2000 is a leap year, the year 2100 is not. The ISL12058 does not correct for the leap year in the year 2100. Control and Status Registers Addresses [07h to 0Bh] The Control and Status Registers consist of the Status Register, Interrupt Register, and Alarm Registers ...
Page 11
... Alarm1 register, multiple registers, or all registers can be enabled for a match. To clear an Alarm1, the A1F status bit can be set to “0” with a write or use the ARST bit auto reset function. 11 ISL12058 PIN WITH TABLE 6. ALARM1 INTERRUPT WITH ENABLE BITS SELECTION OUT FUNCTION ...
Page 12
... The master always initiates data transfers and provides the clock for both transmit and receive operations. Therefore, the ISL12058 operates as a slave device in all applications. All communication over the I sending the MSB of each byte of data first. ...
Page 13
... Data states on the SDA line can change only during SCL LOW periods. SDA state changes during SCL HIGH are reserved for indicating START and STOP conditions (see Figure 7). On power-up of the ISL12058, the SDA pin is in the input mode. 2 All I C interface operations must begin with a START condition, which is a HIGH to LOW transition of SDA while SCL is HIGH ...
Page 14
... Identification byte with the R/W bit set to “1”. After each of the three bytes, the ISL12058 responds with an ACK. Then the ISL12058 transmits Data Bytes as long as the master responds with an ACK during the SCL cycle following the eighth bit of each byte. The master terminates the read operation (issuing a STOP condition) following the last bit of the last Data Byte (see Figure 11) ...
Page 15
... FIGURE 11. MULTIPLE BYTES READ SEQUENCE Figure 12 shows a suggested layout for the ISL12058 device using a surface mount crystal. Two main precautions should be followed not run the serial bus lines or any high speed logic 2. Add a ground trace around the crystal with one end ...
Page 16
... B - 10. Datums -A - and to be determined at Datum plane . - H - 11. Controlling dimension: MILLIMETER. Converted inch dimen- sions are for reference only. 16 ISL12058 M8.118 (JEDEC MO-187AA) 8 LEAD MINI SMALL OUTLINE PLASTIC PACKAGE θ 0.25 R1 (0.010 -C- 4X θ ...
Page 17
... L8.2x2 8 Lead Ultra Thin Dual Flat No-Lead COL Plastic Package (UTDFN COL) Rev 3, 11/07 2.00 6 PIN 1 INDEX AREA (4X) 0.15 TOP VIEW ( TYPICAL RECOMMENDED LAND PATTERN 17 ISL12058 A PIN #1 INDEX AREA 0.5 ±0 MAX NOTES: 1 ...
Page 18
... LEAD THIN DUAL FLAT NO-LEAD PLASTIC PACKAGE Rev 1 6/09 3.00 (4X) 0.15 6 PIN 1 INDEX AREA TOP VIEW ( 2. 1.95) (1.64) ( 2.80 ) PIN 1 (6x 0.65) TYPICAL RECOMMENDED LAND PATTERN 18 ISL12058 2X 1.950 0.400 ± 0.10 Max 0. 0.60 0.30) NOTES: 1. Dimensions are in millimeters. Dimensions Dimensioning and tolerancing conform to AMSE Y14.5m-1994. 3. Unless otherwise specified, tolerance : Decimal ± 0.05 4. ...
Page 19
... However, no responsibility is assumed by Intersil or its subsidiaries for its use; nor for any infringements of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Intersil or its subsidiaries. For information regarding Intersil Corporation and its products, see www.intersil.com 19 ISL12058 M8.15 8 LEAD NARROW BODY SMALL OUTLINE PLASTIC PACKAGE 0.25(0.010) ...