M48T08-150PC1 STMicroelectronics, M48T08-150PC1 Datasheet
M48T08-150PC1
Specifications of M48T08-150PC1
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M48T08-150PC1 Summary of contents
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... BCD coded year, month, day, date, hours, minutes, and seconds ■ Typical clock accuracy of ±1 minute a month °C ■ Automatic power-fail chip deselect and write protection ■ Write protect V = Power-fail deselect voltage): PFD – M48T08 4. 4.75 V PFD – M48T18/T08Y 4 4.5 V PFD ■ ...
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... Setting the clock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 3.3 Stopping and starting the oscillator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 3.4 Calibrating the clock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 3.5 V noise and negative going transients . . . . . . . . . . . . . . . . . . . . . . . . . Maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . and AC parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 6 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 7 Part numbering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 8 Environmental information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 9 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 2/31 Doc ID 2411 Rev 10 M48T08, M48T08Y, M48T18 ...
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... M48T08, M48T08Y, M48T18 List of tables Table 1. Signal names . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Table 2. Operating modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Table 3. READ mode AC characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Table 4. WRITE mode AC characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Table 5. Register map . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 Table 6. Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 Table 7. Operating and AC measurement conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 Table 8. Capacitance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 Table 9. DC characteristics Table 10. Power down/up AC characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 Table 11. ...
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... Figure 15. SH – 4-pin SNAPHAT Figure 16. SH – 4-pin SNAPHAT Figure 17. Recycling symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 4/31 ® housing for 48 mAh battery & crystal, package outline ® housing for 120 mAh battery & crystal, package outline Doc ID 2411 Rev 10 M48T08, M48T08Y, M48T18 ® , package outline . . . 24 ...
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... PROMs without any requirement for special WRITE timing or limitations on the number of WRITEs that can be performed. The 28-pin, 600 mil DIP CAPHAT™ houses the M48T08/18/08Y silicon with a quartz crystal and a long-life lithium button cell in a single package. The 28-pin, 330 mil SOIC provides sockets with gold-plated contacts at both ends for direct ...
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... V CC A12 A11 M48T08 A10 M48T18 DQ7 DQ0 11 18 DQ6 DQ1 12 17 DQ5 DQ2 13 16 DQ4 DQ3 INT 1 28 A12 M48T08Y DQ0 11 18 DQ1 12 17 DQ2 Doc ID 2411 Rev 10 M48T08, M48T08Y, M48T18 AI01182 A11 G A10 E1 DQ7 DQ6 DQ5 DQ4 DQ3 AI01021B ...
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... M48T08, M48T08Y, M48T18 Figure 4. Block diagram OSCILLATOR AND 32,768 Hz CRYSTAL LITHIUM CELL CLOCK CHAIN POWER VOLTAGE SENSE V PFD AND SWITCHING CIRCUITRY V CC INT Doc ID 2411 Rev 10 Description BiPORT SRAM ARRAY A0-A12 DQ0-DQ7 8184 x 8 SRAM ARRAY AI01333 7/31 ...
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... Operation modes As Figure 4 on page 7 oscillator of the M48T08/18/08Y are integrated on one silicon chip. The two circuits are interconnected at the upper eight memory locations to provide user accessible BYTEWIDE™ clock information in the bytes with addresses 1FF8h-1FFFh. The clock locations contain the year, month, date, day, hour, minute, and second in 24-hour BCD format ...
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... M48T08, M48T08Y, M48T18 2.1 READ mode The M48T08/18/08Y is in the READ mode whenever W (WRITE enable) is high, E1 (chip enable 1) is low, and E2 (chip enable 2) is high. The device architecture allows ripple- through access of data from eight of 65,536 locations in the static storage array. Thus, the unique address specified by the 13 address inputs defines which one of the 8,192 bytes of data accessed ...
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... WRITE mode The M48T08/18/08Y is in the WRITE mode whenever W, E1, and E2 are active. The start of a WRITE is referenced from the latter occurring falling edge E1, or the rising edge of E2. A WRITE is terminated by the earlier rising edge E1, or the falling edge of E2. ...
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... M48T08, M48T08Y, M48T18 Figure 6. WRITE enable controlled, WRITE AC waveform A0-A12 DQ0-DQ7 Figure 7. Chip enable controlled, WRITE AC waveforms A0-A12 tAVE1L E1 tAVE2H E2 W DQ0-DQ7 tAVAV VALID tAVWH tAVE1L tAVE2H tWLWH tAVWL tWLQZ tDVWH tAVAV VALID tAVE1H tE1LE1H tAVE2L tE2HE2L tAVWL DATA INPUT tDVE1H ...
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... WRITE enable high to output transition WHQX 1. Valid for ambient operating temperature: T 12/31 M48T08/M48T18/T08Y (1) –100/–10 (T08Y) Min 100 ° 4. 4.5 to 5.5 V (except where noted Doc ID 2411 Rev 10 M48T08, M48T08Y, M48T18 –150/–15 (T08Y) Unit Max Min Max 150 100 ns 130 ns 130 ...
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... The M48T08/18/08Y continuously monitors V point, an interrupt is immediately generated. An internal clock provides a delay of between 10 µs and 40 µs before automatically deselecting the M48T08/18/08Y. The INT pin is an open drain output and requires an external pull-up resistor, even if the interrupt output function is not being used. ...
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... See the application note AN923, “TIMEKEEPER information on century rollover. 14/31 ® registers should be halted before clock data is read to must be written to '0' to allow for normal TIMEKEEPER and RAM ® rolling Into the 21 Doc ID 2411 Rev 10 M48T08, M48T08Y, M48T18 Table 5). Resetting the st century” for ...
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... Calibrating the clock The M48T08/18/08Y is driven by a quartz-controlled oscillator with a nominal frequency of 32,768 Hz. A typical M48T08/18/08Y is accurate within 1 minute per month at 25 °C without calibration. The devices are tested not to exceed ± 35 ppm (parts per million) oscillator frequency error at 25 °C, which equates to about ±1.53 minutes per month. With the calibration bits properly set, the accuracy of each M48T08/18/08Y improves to better than +1/– ...
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... The device must be selected and addresses must be stable at address 1FF9h when reading the 512 Hz on DQ0. The LSB of the seconds register is monitored by holding the M48T08/18/08Y in an extended READ of the seconds register, but without having the READ bit set. The FT bit MUST be reset to '0' for normal clock operations to resume. For more information on calibration, see the application note AN934, “ ...
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... M48T08, M48T08Y, M48T18 Figure 8. Crystal accuracy across temperature ppm 20 0 -20 -40 -60 -80 -100 Figure 9. Clock calibration NORMAL POSITIVE CALIBRATION NEGATIVE CALIBRATION ΔF = -0.038 ppm Doc ID 2411 Rev 10 Clock operations 10 AI02124 AI00594B 17/31 ...
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... MBRS120T3 is recommended for surface mount. Figure 10. Supply voltage protection 18/31 bus. These transients can be reduced if CC that drive it to values below (cathode connected 0.1µF Doc ID 2411 Rev 10 M48T08, M48T08Y, M48T18 bus. The energy stored in the much anode Schottky diode DEVICE V SS AI02169 ...
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... M48T08, M48T08Y, M48T18 4 Maximum ratings 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 indicated in the operating sections of this specification is not implied ...
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... Effective capacitance measured with power supply sampled only, not 100% tested ° MHz. 3. Outputs deselected. 20/31 M48T08 ) 4. 100 1.5 5V DEVICE UNDER TEST 1kΩ includes JIG capacitance (1)(2) Parameter Doc ID 2411 Rev 10 M48T08, M48T08Y, M48T18 M48T18/T08Y 4 100 1.5 1.8kΩ OUT 100pF Min Max - Unit V ° AI01019 ...
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... M48T08, M48T08Y, M48T18 Table 9. DC characteristics Symbol Parameter I Input leakage current LI (2) I Output leakage current LO I Supply current CC (3) I Supply current (standby) TTL CC1 (3) I Supply current (standby) CMOS CC2 V Input low voltage IL V Input high voltage IH Output low voltage V OL ...
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... PFD fall time of less than t may cause corruption of RAM data. FB (1)(2) Parameter M48T08 M48T18/T08Y . ° 8.5 years (typ °C. Requires use of M4T32-BR12SH SNAPHAT DR Doc ID 2411 Rev 10 M48T08, M48T08Y, M48T18 Min Max 0 300 120 = 4. 4.5 to 5.5 V (except where CC Min Typ Max 4 ...
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... M48T08, M48T08Y, M48T18 6 Package mechanical data In order to meet environmental requirements, ST offers these devices in different grades of ® ECOPACK packages, depending on their level of environmental compliance. ECOPACK specifications, grade definitions and product status are available at: www.st.com. ® ECOPACK trademark. Figure 13. PCDIP28 – 28-pin plastic DIP, battery CAPHAT™, package outline Note: Drawing is not to scale ...
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... Doc ID 2411 Rev 10 M48T08, M48T08Y, M48T18 ® , package C eB α ® , package mech. inches Typ Min 0.002 0.092 0.014 0.006 0.697 0.324 0.050 – ...
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... M48T08, M48T08Y, M48T18 Figure 15. SH – 4-pin SNAPHAT outline Note: Drawing is not to scale. Table 14. SH – 4-pin SNAPHAT data Symb ® housing for 48 mAh battery & crystal, package ® housing for 48 mAh battery & crystal, package mech. mm Typ Min Max 9.78 6 ...
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... Min Max 10.54 8.00 8.51 7.24 8.00 0.38 0.46 0.56 21.21 21.84 17.27 18.03 15.55 15.95 3.20 3.61 2.03 2.29 Doc ID 2411 Rev 10 M48T08, M48T08Y, M48T18 inches Typ Min Max 0.415 0.315 .0335 0.285 0.315 0.015 0.018 0.022 0.835 0.860 0.680 ...
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... TR = Tape & reel (not for new design - use F) For PCDIP28: ® blank = ECOPACK 1. The M48T08/18 part is offered with the PCDIP28 (e.g., CAPHAT™) package only. 2. The SOIC package (SOH28) requires the SNAPHAT under the part number “M4TXX-BR12SH” in plastic tube or “M4TXX-BR12SHTR” in tape & reel form (see Table 17) ...
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... Part numbering Table 17. SNAPHAT Part number M4T28-BR12SH M4T32-BR12SH 28/31 ® battery table Description Lithium battery (48 mAh) SNAPHAT Lithium battery (120 mAh) SNAPHAT Doc ID 2411 Rev 10 M48T08, M48T08Y, M48T18 Package ® SH ® SH ...
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... M48T08, M48T08Y, M48T18 8 Environmental information Figure 17. Recycling symbols This product contains a non-rechargeable lithium (lithium carbon monofluoride chemistry) button cell battery fully encapsulated in the final product. Recycle or dispose of batteries in accordance with the battery manufacturer's instructions and local/national disposal and recycling regulations. Please refer to the following web site address for additional information regarding compliance statements and waste recycling www.st.com/rtc, then select " ...
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... Reformatted; SNAPHAT battery table added 3 temp./voltage info. to tables 3.1 Reference to App. Note corrected in “Calibrating the Clock” section 3.2 Changes to text in document to reflect addition of M48T08Y option 3.3 Fix Ordering Information table and add to footnote 3.4 Modify reflow time and temperature footnotes 3.5 ...
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... M48T08, M48T08Y, M48T18 Information in this document is provided solely in connection with ST products. STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, modifications or improvements, to this document, and the products and services described herein at any time, without notice. All ST products are sold pursuant to ST’s terms and conditions of sale. ...