M48T201V-70MH1 STMICROELECTRONICS [STMicroelectronics], M48T201V-70MH1 Datasheet
M48T201V-70MH1
Related parts for M48T201V-70MH1
M48T201V-70MH1 Summary of contents
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... WATCHDOG TIMER CHOICE OF WRITE PROTECT VOLTAGES (V = Power-fail Deselect Voltage): PFD – M48T201Y 4.5 to 5.5V CC 4.1V V 4.5V PFD – M48T201V 3.0 to 3.6V CC 2.7V V 3.0V PFD MICROPROCESSOR POWER-ON RESET (Valid even during battery back-up mode.) PROGRAMMABLE ALARM OUTPUT ACTIVE IN THE BATTERY BACKED-UP MODE PACKAGING INCLUDES A 44-LEAD SOIC ® ...
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... M48T201Y, M48T201V TABLE OF CONTENTS FEATURES SUMMARY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Figure 1. Package DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Figure 2. Logic Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Table 1. Signal Names . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Figure 3. SOIC Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Figure 4. Hardware Hookup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Address Decoding Table 2. Operating Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 READ Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Figure 5. G Timing When Switching Between RTC and External SRAM . . . . . . . . . . . . . . . . . . 8 CON Figure 6. READ Cycle Timing: RTC and External RAM Control Signals . . . . . . . . . . . . . . . . . . . . . 9 Table 3 ...
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... Figure 18.SH – 4-pin SNAPHAT Housing for 120mAh Battery & Crystal, Package Outline . . . . . . 30 Table 17. SH – 4-pin SNAPHAT Housing for 120mAh Battery & Crystal, Package Mech. Data PART NUMBERING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 Table 18. Ordering Information Example Table 19. SNAPHAT® Battery Table REVISION HISTORY Table 20. Document Revision History . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 M48T201Y, M48T201V 3/33 ...
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... M48T201Y, M48T201V DESCRIPTION The M48T201Y/V are self-contained devices that include a real time clock (RTC), programmable alarms, a watchdog timer, and a square wave out- put which provides control 512K ex- ternal low-power static RAM. Access to all RTC functions and the external RAM is the same as conventional bytewide SRAM. The 16 TIME- ® ...
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... M48T201V WDI CON 18 27 DQ0 19 26 DQ1 20 25 DQ2 AI02241 M48T201Y, M48T201V OUT SQW IRQ/FT A17 A15 A13 A8 A9 A11 A10 E E CON DQ7 DQ6 DQ5 DQ4 DQ3 NC 5/33 ...
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... M48T201Y, M48T201V Figure 4. Hardware Hookup 32,768 Hz CRYSTAL LITHIUM 5V CELL 0.1 F Note the second chip enable pin (E2) is unused, it should be tied to V 6/33 A0-A18 V OUT 0.1 F M48T201Y ECON G WDI GCON RSTIN1 RST RSTIN2 IRQ/ SQW DQ0-DQ7 . OUT A0-Axx (1) CMOS ...
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... ( M48T201Y, M48T201V 18). The M48T201Y/V also has its own is out of toler- CC falls below the Battery Back- the control circuitry au- SO (output enable RAM) signal CON W DQ7-DQ0 Power X High-Z Standby V D Active IL IN ...
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... M48T201Y, M48T201V READ Mode The M48T201Y/V executes a READ Cycle when- ever W (WRITE Enable) is high and E (Chip En- able) is low. The unique address specified by the address inputs (A0-A18) defines which one of the ® on-chip TIMEKEEPER registers or external SRAM locations accessed. When the ad- ...
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... Figure 6. READ Cycle Timing: RTC and External RAM Control Signals ADDRESS CON E CON tEPD W tGLQX DQ0-DQ7 READ READ tAVAV tAVAV tELQV tAVQV tELQX tGLQV tAXQX DATA OUT VALID M48T201Y, M48T201V WRITE tAVAV tAVWL tWHAX tRO tWLWH tGHQZ DATA OUT DATA IN VALID VALID AI02334 9/33 ...
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... M48T201Y, M48T201V Table 3. READ Mode AC Characteristics Symbol Parameter t READ Cycle Time AVAV t Address Valid to Output Valid AVQV t Chip Enable Low to Output Valid ELQV t Output Enable Low to Output Valid GLQV (2) Chip Enable Low to Output Transition t ELQX (2) Output Enable Low to Output Transition t GLQX ...
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... WRITE tAVAV tAVAV tAVEH tAVWH tELEH tEHAX tWHAX tEPD tEHDX tWLWH tEHQZ tDVEH tDVWH DATA IN VALID M48T201Y, M48T201V after W falls. WLQZ ® registers will be selected and data will READ tAVAV tAVQV tGLQV tWHQX tWLQZ tWHDX DATA IN DATA OUT VALID VALID AI02336 ...
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... M48T201Y, M48T201V Table 4. 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 ...
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... V able access time must be sufficient to meet the system needs with the chip enable (and output en- , CON able) output propagation delays included. , become high im- M48T201Y, M48T201V returns to a nominal value, write protec- CC Figure 15., page 27). ® SUPERVISOR. There are, however ...
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... M48T201Y, M48T201V CLOCK OPERATION ® TIMEKEEPER Registers The M48T201Y/V offers 16 internal registers ® which contain TIMEKEEPER Flag, and Control data (see These registers are memory locations which con- tain external (user accessible) and internal copies of the data (usually referred to as BiPORT™ ...
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... SQWE = Square Wave Enable Bit BMB0-BMB4 = Watchdog Multiplier Bits RB0-RB1 = Watchdog Resolution Bits AFE = Alarm Flag Enable Flag ABE = Alarm in Battery Back-Up Mode Enable Bit RPT1-RPT5 = Alarm Repeat Mode Bits WDF = Watchdog Flag RS0-RS3 = SQW Frequency M48T201Y, M48T201V Function/Range BCD Format D1 D0 Year Month Date ...
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... M48T201Y, M48T201V Setting the Alarm Clock Registers 7FFF6h-7FFF2h contain the alarm set- tings. The alarm can be configured to go off at a prescribed time on a specific month, day of month, hour, minute, or second or repeat every month, day of month, hour, minute, or second. It can also be programmed to go off while the M48T201Y the battery back-up to serve as a system wake-up call ...
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... IRQ/FT pin and the frequency test function is activated, the watchdog or alarm function prevails and the frequency test function is denied. Note: The user must transition the address (or toggle chip enable) to see the Flag Bit change. M48T201Y, M48T201V tREC HIGH-Z AI03520 if not used. The watchdog ...
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... M48T201Y, M48T201V Square Wave Output The M48T201Y/V offers the user a programmable square wave function which is output on the SQW pin. RS3-RS0 Bits located in 7FFF0h establish the square wave output frequency. These frequencies are listed in Table 7. Once the selection of the Table 7. Square Wave Output Frequency ...
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... Pulses shorter than t not generate a reset condition. RSTIN1 and RSTIN2 are each internally pulled through a 100K tR2 Hi-Z tR1HRZ (1) Parameter = 0 to 70° 4.5 to 5.5V or 3.0 to 3.6V (except where noted 25). M48T201Y, M48T201V 8 illustrate the AC reset characteristics of R1 resistor. Hi-Z tR2HRZ AI01679 Min Max 50 200 20 100 ...
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... M48T201Y, M48T201V Calibrating the Clock The M48T201Y/V is driven by a quartz controlled oscillator with a nominal frequency of 32,768Hz. The devices are factory calibrated at 25°C and tested for accuracy. Clock accuracy will not ex- ceed ±35 ppm (parts per million) oscillator fre- quency error at 25°C, which equates to about ± ...
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... Figure 11. Crystal Accuracy Across Temperature Frequency (ppm –20 –40 –60 –80 –100 –120 –140 –160 –40 –30 –20 Figure 12. Calibration Waveform NORMAL POSITIVE CALIBRATION NEGATIVE CALIBRATION F = -0.038 ppm ( – Temperature C M48T201Y, M48T201V AI00999 AI00594B 21/33 ...
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... M48T201Y, M48T201V Battery Low Warning The M48T201Y/V automatically performs battery voltage monitoring upon power-up and at factory- programmed time intervals of approximately 24 hours. The Battery Low (BL) Bit, Bit D4 of Flags Register 7FFF0h, will be asserted if the battery voltage is found to be less than approximately 2.5V. The BL Bit will remain asserted until comple- ...
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... STMicroelectronics recom- mends connecting a schottky diode from V V (cathode connected Schottky diode 1N5817 is recommended for through hole and MBRS120T3 is recommended for surface mount. Figure 13. Supply Voltage Protection bus. The energy anode M48T201Y, M48T201V 0.1 F DEVICE V SS AI00605 23/33 ...
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... M48T201Y, M48T201V MAXIMUM RATING Stressing the device above the rating listed in the “Absolute Maximum Ratings” table may cause permanent damage to the device. These are stress ratings only and operation of the device at these or any other conditions above those indicat the Operating sections of this specification is Table 10 ...
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... Note: Output High Z is defined as the point where data is no longer driven. Figure 14. AC Testing Load Circuit 645 DEVICE UNDER TEST 100pF C L includes JIG capacitance Notes:Excluding open-drain output pin; 50pF for M48T201V. Table 12. Capacitance Symbol Parameter C Input Capacitance IN (3) ...
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... M48T201Y, M48T201V Table 13. DC Characteristics Sym Parameter (2) Input Leakage Current I LI (3) Output Leakage Current Supply Current CC Supply Current (Standby) I CC1 TTL Supply Current (Standby) I CC2 CMOS Battery Current OSC ON I BAT Battery Current OSC OFF V Input Low Voltage IL V Input High Voltage ...
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... Rise Time CC Rise Time 70° 4.5 to 5.5V or 3.0 to 3.6V (except where noted may result in deselection/write protection not occurring until 200µs after V F may cause corruption of RAM data. FB M48T201Y, M48T201V tR tRB tREC DON'T CARE VALID HIGH-Z VALID Min Max 300 10 ...
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... M48T201Y, M48T201V PACKAGE MECHANICAL INFORMATION Figure 16. SOH44 – 44-lead Plastic Small Outline, SNAPHAT, Package Outline SOH-A Note: Drawing is not to scale. Table 15. SOH44 – 44-lead Plastic Small Outline, SNAPHAT, Package Mechanical Data Symb Typ 0. ...
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... Table 16. SH – 4-pin SNAPHAT Housing for 48mAh Battery & Crystal, Package Mech. Data Symb Typ Min Max 9.78 6.73 7.24 6.48 6.99 0.38 0.46 0.56 21.21 21.84 14.22 14.99 15.55 15.95 3.20 3.61 2.03 2.29 M48T201Y, M48T201V SHTK-A inches Typ 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 0.090 29/33 ...
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... M48T201Y, M48T201V Figure 18. SH – 4-pin SNAPHAT Housing for 120mAh Battery & Crystal, Package Outline Note: Drawing is not to scale. Table 17. SH – 4-pin SNAPHAT Housing for 120mAh Battery & Crystal, Package Mech. Data Symb Typ 30/ ...
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... CC PFD 201V = V = 3.0 to 3.6V 2.7V to 3.0V CC PFD Speed –70 = 70ns (for M48T201Y) –85 = 85ns (for M48T201V) Package ( SOH44 Temperature Range 70°C Shipping Method for SOIC blank = Tubes TR = Tape & Reel Note: 1. The SOIC package (SOH44) requires the battery package (SNAPHAT “ ...
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... M48T201, M48T201Y, M48T201V, 48T201, 48T201Y, 48T201V, T201, T201Y, T201V, SUPERVISOR, SUPERVISOR, SUPERVISOR, SUPERVISOR, SUPERVISOR, SUPERVISOR, SUPERVISOR, SUPER- VISOR, SUPERVISOR, SUPERVISOR, SUPERVISOR, SUPERVISOR, SUPERVISOR, SUPERVISOR, SUPERVISOR, TIMEKEEPER, TIMEKEEPER, TIMEKEEPER, TIMEKEEPER, TIMEKEEPER, TIME- KEEPER, TIMEKEEPER, TIMEKEEPER, TIMEKEEPER, TIMEKEEPER, TIMEKEEPER, TIMEKEEPER, TIMEKEEPER, TIMEKEEPER, TIMEKEEPER, TIMEKEEPER, TIMEKEEPER, TIMEKEEPER, ...
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