STK17TA8-RF45ITR Cypress Semiconductor Corp, STK17TA8-RF45ITR Datasheet
STK17TA8-RF45ITR
Specifications of STK17TA8-RF45ITR
Related parts for STK17TA8-RF45ITR
STK17TA8-RF45ITR Summary of contents
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... Cypress Semiconductor Corporation Document #: 001-52039 Rev. *A 128k X 8 AutoStore nvSRAM with Description The Cypress STK17TA8 combines nonvolatile static RAM (nvSRAM) with a full featured real time clock in a reliable, monolithic integrated circuit. The 1 Mb nvSRAM is a fast static RAM with a nonvolatile Quantum Trap storage element included with each memory cell. ...
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... Calibrating The Clock ................................................... 16 Alarm .............................................................................16 Watchdog Timer ........................................................... 16 Power Monitor .............................................................. 16 Interrupts ...................................................................... 17 Interrupt Register.......................................................... 17 Flags Register .............................................................. 17 RTC Register ......................................................................18 Register Map Detail ...........................................................19 Ordering Information .........................................................22 STK17TA8 ITR ........................................................22 Ordering Codes .................................................................22 Package Diagrams .............................................................23 Document History Page ....................................................24 Sales, Solutions, and Legal Information .........................24 Worldwide Sales and Design Support.......................... 24 Products ....................................................................... 24 STK17TA8 Page [+] Feedback ...
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... NC No Connect Unlabeled pins have no internal connections. Note 1. For detailed package size specifications, See “Package Diagrams” Document #: 001-52039 Rev. *A Figure 1. Pin Diagram - 48-PIn SSOP HSB RTCcap Description on page 23.. STK17TA8 [1] Relative PCB Area Usage is used) RTCbat is used) RTCcap Page [+] Feedback [+] Feedback ...
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... V + 0.5 2 –0.5 0.8 V –0 2.4 2.4 0.4 of 2.4V, this parameter is characterized but not tested. STK17TA8 Units Notes Max AVAV AVAV Dependent on output loading and cycle rate. Values obtained without output loads All Inputs Don’t Care Average current for duration of ...
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... Ohms OUTPUT 30 pF 789 Ohms INCLUDING SCOPE AND FIXTURE ( 3.0V 577 Ohms OUTPUT 5 pF 789 Ohms INCLUDING SCOPE AND FIXTURE STK17TA8 Units Notes °C 85 3.6 V 3.0V +20%, -10% μF 57 Between V pin and V CAP SS rated. K Years At 55 °C Units Conditions Δ Δ ...
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... KHz 10M Ohm = 0 (install cap footprint but leave unloaded ± 10% (do not vary from this value) 2 STK17TA8 Notes From either RTCcap RTCbat Typical = 3.0 Volts during normal operation Typical = 2.4 Volts during normal operation At MIN Temperature from Power up or Enable At 25° ...
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... Device is continuously selected with E and G both low 5. Measured ± 200mV from steady state output voltage. 6. HSB must remain high during READ and WRITE cycles. Document #: 001-52039 Rev. *A Parameter 2 t AVAV AVQV t AXQX DATA VALID STK17TA8 STK17TA8-25 STK17TA8-45 Units Min Max Min Max ...
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... Output Active after End of Write 11 t AVAV 14 t ELWH 17 t AVWH 13 t WLWH 15 t DVWH DATA VALID 20 t WLQZ HIGH IMPEDANCE 11 t AVAV 14 t ELEH 17 t AVEH 13 t WLEH 15 t DVEH DATA VALID HIGH IMPEDANCE STK17TA8 STK17TA8-25 STK17TA8-45 Units Min Max Min Max [ WHAX ...
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... CC 10 SRAM WRITE has not taken place since the last nonvolatile cycle, no STORE will take place 11. Industrial Grade Devices require 15 ms MAX. Document #: 001-52039 Rev. *A Parameter Rise Time Figure 9. AutoStore/Power Up RECALL 23 22 SWITCH STK17TA8 STK17TA8 Units Notes Min Max 12.5 ms 10,11 2 ...
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... The six consecutive addresses must be read in the order listed in the Software STORE/RECALL Mode Selection Table W must be high during all six consecutive cycles. Document #: 001-52039 Rev. *A STK17TA8-35 Parameter STORE / RECALL Initiation Cycle Time Address Setup Time Clock Pulse Width Address Hold Time RECALL Duration STK17TA8 [12, 13] STK17TA8-45 Units Min Max Min Max μ ...
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... Commands like Store and Recall lock out I/O until operation is complete which further increases this time. See specific command. Document #: 001-52039 Rev. *A Parameter Figure 12. Hardware STORE Cycle 23 31 Parameter Figure 13. Soft Sequence Commands 33 STK17TA8 STK17TA8 Units Notes Min Max μ STK17TA8 Units Notes Min Max μs 70 15,16 33 Page [+] Feedback [+] Feedback ...
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... The six consecutive addresses must be in the order listed. W must be high during all six consecutive cycles to enable a nonvolatile cycle. 18. While there are 17 addresses on the STK17TA8, only the lower 16 are used to control software modes 19. I/O state depends on the state of G. The I/O table shown assumes G low Document #: 001-52039 Rev ...
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... SRAM. In addition, it provides unlimited RECALL operations from the nonvolatile cells and up to 200K STORE operations. SRAM READ The STK17TA8 performs a READ cycle whenever E and G are low while W and HSB are high. The address specified on pins A determine which of the 131,072 data bytes are accessed. ...
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... WRITE operations. The low voltage condition is detected when V < SWITCH If the STK17TA8 WRITE mode (both E and W low) at power up, after a RECALL, or after a STORE, the WRITE will be inhibited until a negative transition detected. This protects against inadvertent writes during power up or brown out conditions. Noise Considerations The STK17TA8 is a high speed memory and so must have a high frequency bypass capacitor of 0.1 µ ...
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... If the OSCEN bit goes from disabled to enabled, it typically takes 5 seconds (10 seconds max) for the oscillator to start. The STK17TA8 has the ability to detect oscillator failure due to loss of backup power. The failure is recorded by the OSCF (Oscillator Failed) bit of the Flags register (at address 0x1FFF0). ...
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... KHz. Clock accuracy will depend on the quality of the crystal, specified (usually 35 ppm at 25 C). This error could equate to 1.53 minutes gain or loss per month. The STK17TA8 employs a calibration circuit that can improve the accuracy to +1/-2 ppm The calibration circuit adds or subtracts counts from the oscillator divider circuit. ...
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... Interrupts The STK17TA8 has a Flags register, Interrupt Register, and interrupt logic that can interrupt a microcontroller or generate a power up master reset signal. There are three potential interrupt sources: the watchdog timer, the power monitor, and the clock alarm. Each can be individually enabled to drive the INT pin by setting the appropriate bit in the Interrupt register ...
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... Alarm Hours Alarm Hours Alarm Minutes Alarm Seconds Centuries PF OSCF 0 CAL[0] W[0] “Stopping And Starting The RTC Oscillator” STK17TA8 Function / Range D0 Years: 00-99 Months: 01-12 Day of Month: 01-31 Day of week: 01-07 Hours: 00-23 Minutes: 00-59 Seconds: 00-59 Calibration values* ...
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... Day of month Real Time Clock – Day Real Time Clock – Hours 10s Hours Real Time Clock – Minutes 10s Minutes Real Time Clock – Seconds 10s Seconds Calibration Calibration Sign STK17TA8 Years Months Day of month Day of week Hours Minutes Seconds ...
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... Document #: 001-52039 Rev. *A Watchdog Timer WDT Interrupt PFIE ABE H/L Alarm – Day 10s Alarm Date Alarm – Hours 10s Alarm Hours Alarm – Hours 10s Alarm Hours STK17TA8 P Alarm Date Alarm Hours Alarm Hours Page [+] Feedback [+] Feedback ...
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... Set enable the holding register to resume clock updates. This bit defaults power up. Document #: 001-52039 Rev. *A Alarm – Seconds 10s Alarm Seconds Real Time Clock – Centuries Centuries Flags OSCF 0 STK17TA8 Alarm Seconds CAL cleared SWITCH Page [+] Feedback [+] Feedback ...
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... STK17TA8-RF25TR 3V 128Kx8 AutoStore nvSRAM+RTC SSOP48-300 STK17TA8-RF45TR 3V 128Kx8 AutoStore nvSRAM+RTC SSOP48-300 STK17TA8-RF25I 3V 128Kx8 AutoStore nvSRAM+RTC SSOP48-300 STK17TA8-RF45I 3V 128Kx8 AutoStore nvSRAM+RTC SSOP48-300 STK17TA8-RF25ITR 3V 128Kx8 AutoStore nvSRAM+RTC SSOP48-300 STK17TA8-RF45ITR 3V 128Kx8 AutoStore nvSRAM+RTC SSOP48-300 Document #: 001-52039 Rev. *A Packing Option Blank=Tube TR=Tape and Reel Temperature Range Blank=Commercial (0 to +70 C) ...
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... Package Diagrams Document #: 001-52039 Rev. *A Figure 17. 48-Pin SSOP (51-85061) STK17TA8 51-85061 *C Page [+] Feedback [+] Feedback ...
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... Document History Page Document Title: STK17TA8 128k X 8 AutoStore nvSRAM with Real Time Clock Document Number: 001-52039 Orig. of Submission Rev. ECN No. Change ** 2668660 GVCH/PYRS 03/04/2009 *A 2814390 GVCH 11/25/2009 Sales, Solutions, and Legal Information Worldwide Sales and Design Support Cypress maintains a worldwide network of offices, solution centers, manufacturer’s representatives, and distributors. To find the office closest to you, visit us at cypress ...