M48T513V-85CS1 STMicroelectronics, M48T513V-85CS1 Datasheet
M48T513V-85CS1
Specifications of M48T513V-85CS1
Related parts for M48T513V-85CS1
M48T513V-85CS1 Summary of contents
Page 1
... WRITE PROTECTION TWO WRITE PROTECT VOLTAGES Power-fail Deselect Voltage) PFD – M48T513Y 4.5 to 5.5V CC 4.2V V 4.5V PFD – M48T513V 3.0 to 3.6V CC 2.7V V 3.0V PFD CONVENTIONAL SRAM OPERATION; UNLIMITED WRITE CYCLES SOFTWARE CONTROLLED CLOCK CALIBRATION FOR HIGH ACCURACY APPLICATIONS 10 YEARS OF DATA RETENTION and CLOCK ...
Page 2
... M48T513Y, M48T513V TABLE OF CONTENTS DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Logic Diagram (Figure 3 Signal Names (Table 1 36-pin Module Connections (Figure 4 Block Diagram (Figure 5 Hardware Hookup for SMT Chipset (Figure 6 MAXIMUM RATING Absolute Maximum Ratings (Table 2 AND AC PARAMETERS Operating and AC Measurement Conditions (Table 3 Measurement Load Circuit (Figure 7.). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Capacitance (Table 4 ...
Page 3
... RSTIN Timing Waveform (Figure 15.). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 Reset AC Characteristics (Table 13 Crystal Accuracy Across Temperature (Figure 16 Calibration Waveform (Figure 17 Power Supply Decoupling and Undershoot Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 Supply Voltage Protection (Figure 18 PART NUMBERING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 SNAPHAT Battery Table (Table 15.). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 PACKAGE MECHANICAL INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 REVISION HISTORY M48T513Y, M48T513V 3/31 ...
Page 4
... M48T513Y, M48T513V DESCRIPTION The M48T513Y/V TIMEKEEPER 512 non-volatile static RAM and real time clock, with programmable alarms and a watchdog timer. The special DIP package provides a fully in- tegrated battery back-up memory and real time clock solution. The M48T513Y/V directly replaces industry standard 512 SRAM. It also pro- ...
Page 5
... A15 A14 5 32 A17 A12 A13 M48T513Y M48T513V A11 A10 DQ7 DQ0 15 22 DQ6 DQ1 16 21 DQ5 DQ2 17 20 DQ4 DQ3 AI02307 TIMEKEEPER REGISTERS POWER 524,272 x 8 SRAM ARRAY V PFD V SS M48T513Y, M48T513V RST IRQ/FT A0-A18 DQ0-DQ7 WDI RSTIN AI02584 5/31 ...
Page 6
... LITHIUM 5V or 3.3V CELL 0.1 F Note: For pin connections, see individual data sheets for M48T201Y/V and M68Z512/W at www.st.com. 1. For 5V, M48T513Y (M48T201Y + M68Z512). For 3.3V, M48T513V (M48T201V + M68Z512W). 2. SNAPHAT Top ordered separately. 3. RSTIN input is the same input as RSTIN2 of M48T201Y/V. 6/31 A0-A18 V OUT ...
Page 7
... CAUTION: Do NOT wave solder SOIC to avoid damaging SNAPHAT sockets. not implied. Exposure to Absolute Maximum Rat- ing conditions for extended periods may affect de- vice reliability. STMicroelectronics SURE Program and other rel- evant quality documents. Parameter Off, Oscillator Off) M48T513Y M48T513V M48T513Y, M48T513V Refer also to the Value Unit – ...
Page 8
... Input Capacitance IN (3) Input / Output Capacitance C IO Note: 1. Effective capacitance measured with power supply at 5V (M48T513Y) or 3.3V (M48T513V). Sampled only, not 100% tested 1MHz. 3. Outputs deselected. 8/31 ment Conditions listed in the relevant tables. De- signers should check that the operating conditions in their projects match the measurement condi- tions when using the quoted parameters ...
Page 9
... Note: 1. Valid for Ambient Operating Temperature Outputs deselected. M48T513Y Test –70 (1) Condition Min Max OUT CC Outputs open 115 – 0. –0.3 0 0.3 2 2.1mA 0 –1mA 2 4.5 to 5.5V or 3.0 to 3.6V (except where noted M48T513Y, M48T513V M48T513Y/V –85 Unit Min Max –0.3 0 0.3 2 0.4 V 2.2 V 9/31 ...
Page 10
... M48T513Y, M48T513V OPERATING MODES Figure 5, page 5 illustrates the static memory array and the quartz controlled clock oscillator. The clock locations contain the century, year, month, date, day, hour, minute, and second in 24 hour BCD format. Corrections for 28, 29 (leap year), 30, and 31 day months are made automatically ...
Page 11
... Data Hold Time) but will go indeterminate until the next Address Access. tAVAV VALID tAVQV tAXQX tELQV tELQX tGLQV tGLQX DATA OUT tAVAV VALID tAVQV DATA VALID M48T513Y, M48T513V ) ELQV Access Time (t ). GLQV . If the Address In- AVQV (Output AXQX tEHQZ tGHQZ AI01197 AI02324 ...
Page 12
... M48T513Y, M48T513V Table 7. READ Mode AC Characteristics Symbol Parameter t READ Cycle Time AVAV Address Valid to Output Valid t AVQV Chip Enable Low to Output Valid t ELQV Output Enable Low to Output Valid t GLQV (2) Chip Enable Low to Output Transition t ELQX (2) Output Enable Low to Output Transition t GLQX ...
Page 13
... WLQZ EHAX tAVAV VALID tAVWH tWLWH tWLQZ tWHDX DATA INPUT tDVWH tAVAV VALID tELEH DATA INPUT tDVWH M48T513Y, M48T513V from WRITE Enable prior to prior to the end of DVWH afterward. G WHDX after W falls. tWHAX tWHQX AI02382 tEHAX tWHDX AI02582 13/31 ...
Page 14
... M48T513Y, M48T513V Table 8. WRITE Mode AC Characteristics Symbol Parameter t WRITE Cycle Time AVAV t Address Valid to WRITE Enable Low AVWL t Address Valid to Chip Enable Low AVEL t WRITE Enable Pulse Width WLWH t Chip Enable Low to Chip Enable High ELEH t WRITE Enable High to Address Transition ...
Page 15
... M48T513Y M48T513V Rise Time 4.5 to 5.5V or 3.0 to 3.6V (except where noted may result in deselection/write protection not occurring until 200ms after V F may cause corruption of RAM data. FB M48T513Y, M48T513V . Therefore, decoupling of the CC , the control circuit Deselect continues for CC (max). For a further PFD tR ...
Page 16
... M48T513Y, M48T513V Table 10. Power Down/Up Trip Points DC Characteristics Symbol Parameter V Power-fail Deselect Voltage PFD V Battery Back-up Switchover Voltage SO (3) Expected Data Retention Time t DR Note: 1. Valid for Ambient Operating Temperature All voltages referenced CLOCK OPERATIONS TIMEKEEPER Registers The M48T513Y/V offers 16 internal registers ...
Page 17
... WDS = Watchdog Steering Bit BMB0-BMB4 = Watchdog Multiplier Bits RB0-RB1 = Watchdog Resolution Bits AFE = Alarm Flag Enable ABE = Alarm in Battery Back-up Mode Enable RPT1-RPT5 = Alarm Repeat Mode Bits WDF = Watchdog Flag (Read only) M48T513Y, M48T513V Function/Rang e BCD Format Year 00-99 Month 01-12 ...
Page 18
... M48T513Y, M48T513V Calibrating the Clock The M48T513Y/V is driven by a quartz controlled oscillator with a nominal frequency of 32,768Hz. The devices are factory calibrated and tested for accuracy. Clock accuracy will not ex- ceed 35 ppm (parts per million) oscillator frequen- cy error which equates to about 1.53 minutes per month (see Figure 16 on page 22) ...
Page 19
... Figure Figure 14, page 20 illus- trates the back-up mode alarm timing. 15ns Min ADDRESS 1FF0h RPT3 RPT2 RPT1 M48T513Y, M48T513V HIGH-Z AI02581 Alarm Activated 1 Once per Second 0 Once per Minute 0 Once per Hour 0 Once per Day 0 Once per Month 0 Once per Year 19/31 ...
Page 20
... M48T513Y, M48T513V Figure 14. Back-up Mode Alarm Waveforms PFD (max) V PFD (min AFE bit in Interrupt Register AF bit in Flags Register IRQ/FT HIGH-Z Watchdog Timer The watchdog timer can be used to detect an out- of-control microprocessor. The user programs the watchdog timer by setting the desired amount of time-out into the Watchdog Register, address 7FFF7h ...
Page 21
... Upon application of power to the device, the fol- lowing register bits are set to a ’0’ state: WDS, BMB0-BMB4, RB0,RB1, AFE, ABE and FT. tR Hi-Z (1) Min 4.5 to 5.5V or 3.0 to 3.6V (except where noted M48T513Y, M48T513V is CC tRHRZ Hi-Z AI02585 Max Unit 100 ms 200 ms 21/31 ...
Page 22
... M48T513Y, M48T513V Figure 16. Crystal Accuracy Across Temperature Frequency (ppm –20 –40 –60 –80 –100 –120 –140 –160 –40 –30 –20 –10 Figure 17. Calibration Waveform NORMAL POSITIVE CALIBRATION NEGATIVE CALIBRATION 22/ -0.038 ppm 10 Temperature AI00999 AI00594B ...
Page 23
... SRAM while in battery backup mode. To protect from these voltage spikes, ST recom- mends connecting a schottky diode from V V (cathode connected anode (Schottky diode 1N5817 is recommended for through hole and MBRS120T3 is recommended for surface mount). M48T513Y, M48T513V Figure 18. Supply Voltage Protection V CC 0.1 F that ...
Page 24
... PFD 513V = V = 3.0 to 3.6V 2.7 to 3.0V CC PFD Speed –70 = 70ns (for M48T513Y) –85 = 85ns (for M48T513Y, M48T513V) Package PL = PLDIP36 ( Surface Mount Chip Set solution M48T201Y/V (SOH44) + M68Z512/W (TSOP II 32) Temperature Range Note: 1. The SOIC package (SOH44) requires the battery package (SNAPH AT ) which is ordered separately under the part number “ ...
Page 25
... Min Max Typ 9.27 9.52 0.38 0.43 0.59 0.20 0.33 53.34 18.80 2.30 2.81 47.50 16.00 3.05 3.81 4.45 5.33 36 M48T513Y, M48T513V C eA PMDIP inches Min Max 0.3650 0.3748 0.0150 0.0169 0.0232 0.0079 0.0130 2.0701 2.1000 0.7098 0.7402 0.0906 0.1106 1.5300 1 ...
Page 26
... M48T513Y, M48T513V Figure 20. TSOP II 32 – 32-lead Plastic Thin Small Outline II mm, Package Outline Note: Drawing is not to scale. Table 17. TSOP II 32 – 32-lead Plastic Thin Small Outline II mm, Package Mechanical Data Symbol Typ 20.82 e 1.27 E 11.56 E1 10. 26/ Min Max Typ 1.20 ...
Page 27
... Min Max Typ 9.78 6.73 7.24 6.48 6.99 0.38 0.46 0.56 21.84 14.99 15.95 3.20 3.61 2.03 2.29 M48T513Y, M48T513V SHTK-A inches Min Max 0.385 0.265 0.285 0.255 0.275 0.015 0.018 0.022 0.835 0.860 0.560 0.590 0.612 0.628 0.126 0.142 0.080 ...
Page 28
... M48T513Y, M48T513V Figure 22. SH – 4-pin SNAPHAT Housing for 120mAh Battery & Crystal, Package Outline eA D Note: Drawing is not to scale. Table 19. SH – 4-pin SNAPHAT Housing for 120mAh Battery & Crystal, Package Mechanical Data Symb Typ 21.21 E 17.27 eA 15. 28/ Min Max Typ 10 ...
Page 29
... M48T513Y, M48T513V C L inches Min Max 0.120 0.002 0.014 0.092 0.106 0.014 0.018 0.006 0.012 0.697 0.728 0.324 0.350 – – 0.126 0.142 ...
Page 30
... M48T513Y, M48T513V REVISION HISTORY Table 21. Revision History Date April 2000 Chipset data sheet First Issue 06/20/00 From Preliminary Data to data Sheet 07/03/00 85ns speed class for M48T513Y added (Table 7, 8) 07/26/00 Ordering Information Scheme Changed (Table 14) 12/11/00 Reformatted New TOC, SNAPHAT battery table added (Table 15); added temp/voltage info. to tables (Table 5, ...
Page 31
... All other names are the property of their respective owners. STMicroelectronics GROUP OF COMPANIES Australia - Brazil - China - Finland - France - Germany - Hong Kong - India - Italy - Japan - Malaysia - Malta - Morocco - Singapore - Spain - Sweden - Switzerland - United Kingdom - U.S.A . 2001 STMicroelectronics - All Rights Reserved www.st.com M48T513Y, M48T513V 31/31 ...