M48T08-150PC1 BATTERY_Inventory of electronic components_Electronic equipment_Power management

M48T08-150PC1


：	M48T08-150PC1
：	BATTERY
：
：	Real Time Clock
：	-
：
：	YES

1/27December 2005

M48T08

M48T08Y, M48T18

5V, 64 Kbit (8 Kb x8) TIMEKEEPER

SRAM

Rev 7.0

FEATURES SUMMARY

■ INTEGRATED ULTRA LOW POWER SRAM,

REAL TIME CLOCK, POWER-FAIL

CONTROL CIRCUIT, AND BATTERY

■ BYTEWIDE™ RAM-LIKE CLOCK ACCESS

■ BCD CODED YEAR, MONTH, DAY, DATE,

HOURS, MINUTES, and SECONDS

■ TYPICAL CLOCK ACCURACY OF ±1

MINUTE A MONTH, AT 25°C

■ AUTOMATIC POWER-FAIL CHIP

DESELECT AND WRITE PROTECTION

■ WRITE PROTECT VOLTAGES

PFD

= Power-fail Deselect Voltage):

– M48T08: V

= 4.75 to 5.5V

4.5V ≤ V

PFD

≤ 4.75V

– M48T18/T08Y: V

= 4.5 to 5.5V

4.2V ≤ V

PFD

≤ 4.5V

■ SOFTWARE CONTROLLED CLOCK

CALIBRATION FOR HIGH ACCURACY

APPLICATIONS

■ SELF-CONTAINED BATTERY AND

CRYSTAL IN THE CAPHAT™ DIP

PACKAGE

■ PACKAGING INCLUDES A 28-LEAD SOIC

AND SNAPHAT

TOP (to be ordered

separately)

■ SOIC PACKAGE PROVIDES DIRECT

CONNECTION FOR A SNAPHAT TOP

WHICH CONTAINS THE BATTERY AND

CRYSTAL

■ PIN AND FUNCTION COMPATIBLE WITH

DS1643 and JEDEC STANDARD 8K x8

SRAMs

■ RoHS COMPLIANCE

Lead-free components are compliant with the

RoHS Directive.

Figure 1. 28-pin PCDIP, CAPHAT™ Package

Figure 2. 28-pin SOIC Package

PCDIP28 (PC)

Battery/Crystal

CAPHAT

SNAPHAT (SH)

Battery/Crystal

SOH28 (MH)

M48T08, M48T08Y, M48T18

2/27

TABLE OF CONTENTS

FEATURES SUMMARY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Figure 1. 28-pin PCDIP, CAPHAT™ Package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Figure 2. 28-pin SOIC Package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

SUMMARY DESCRIPTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Figure 3. Logic Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Table 1. Signal Names . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Figure 4. DIP Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Figure 5. SOIC Connections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Figure 6. Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

OPERATION MODES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Table 2. Operating Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

READ Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Figure 7. READ Mode AC Waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Table 3. READ Mode AC Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

WRITE Mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Figure 8. WRITE Enable Controlled, WRITE AC Waveform. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Figure 9. Chip Enable Controlled, WRITE AC Waveforms. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Table 4. WRITE Mode AC Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Data Retention Mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Power-fail Interrupt Pin. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

CLOCK OPERATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Reading the Clock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Setting the Clock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Table 5. Register Map . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Stopping and Starting the Oscillator. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Calibrating the Clock. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Figure 10.Crystal Accuracy Across Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Figure 11.Clock Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Noise And Negative Going Transients. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Figure 12.Supply Voltage Protection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

MAXIMUM RATING. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Table 6. Absolute Maximum Ratings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

DC AND AC PARAMETERS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Table 7. Operating and AC Measurement Conditions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Figure 13.AC Testing Load Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Table 8. Capacitance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Table 9. DC Characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Figure 14.Power Down/Up Mode AC Waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

3/27

M48T08, M48T08Y, M48T18

Table 10. Power Down/Up AC Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Table 11. Power Down/Up Trip Points DC Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

PACKAGE MECHANICAL INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Figure 15.PCDIP28 – 28-pin Plastic DIP, battery CAPHAT, Package Outline . . . . . . . . . . . . . . . . 21

Table 12. PCDIP28 – 28-pin Plastic DIP, battery CAPHAT, Package Mechanical Data. . . . . . . . . 21

Figure 16.SOH28 – 28-lead Plastic Small Outline, 4-socket battery SNAPHAT, Package Outline. 22

Table 13. SOH28 – 28-lead Plastic SO, 4-socket battery SNAPHAT, Package Mech. Data . . . . . 22

Figure 17.SH – 4-pin SNAPHAT Housing for 48mAh Battery & Crystal, Package Outline . . . . . . . 23

Table 14. SH – 4-pin SNAPHAT Housing for 48mAh Battery & Crystal, Package Mech. Data. . . . 23

Figure 18.SH – 4-pin SNAPHAT Housing for 120mAh Battery & Crystal, Package Outline . . . . . . 24

Table 15. SH – 4-pin SNAPHAT Housing for 120mAh Battery & Crystal, Package Mech. Data. . . 24

PART NUMBERING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Table 16. Ordering Information Scheme . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Table 17. SNAPHAT Battery Table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

REVISION HISTORY. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

Table 18. Document Revision History . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

14.97594

Infineon

IRFR3411TRPBF

Renesas Electronics America Inc

ISL99227HRZ-T7A

CNTRLR SPS MOD SMART PWR 32PQFN

Analog Devices Inc.

LTC4367IMS8-PBF

SUPPLY PROTECTION CONTROLLER

Hirose Electric

TF42-16S-0.35SH(895)

16 Position 0.35mm SMD FFC Conenctor

Infineon

IMBF170R650M1XTMA1

1700V, 7.5A, 650mOhm, N-Channel, TO-263-7, SIC MOSFET

Vishay

S1A-E3/61T

S1A Series 1 A 50 V Surface Mount Glass Passivated Rectifier - DO-214AC

Maxim Integrated

MAX5984AETI+

Single-Port, 40W, IEEE 802.3af/at PSE Controller with Integrated MOSFET

Microchip

LX7167CLD-TR

CONEC

DLH5XS8CK53X

D-Sub High Density Connectors 78P F R/A .350 S/F NO HEX SCR. NI

Molex

1301370144

Power Outlet Strips (2)SNG RCPT 15A/125V W-PROF BX

Taiyo Yuden

LBC2016T4R7M

FIXED IND 4.7UH 355MA 370MOHM SM

ECS Inc.

ECS-MPI4040R4-1R0-R

FIXED IND 1UH 5.7A 17 MOHM SMD

M48T08-150PC1

Real Time Clock Parallel 8KByte 28-Pin PCDIP Tube - Rail/T

Murata Electronics

LQH43NN820J03L

FIXED IND 82UH 170MA 2.2 OHM SMD

Murata Electronics

LQP02HQ0N6B02L

FIXED IND 0.6NH 950MA 50MOHM SMD

Delta Electronics/Cyntec

CWL0306-2N4-BNH

FIXED IND 2.4NH 800MA 90MOHM SMD

Taiyo Yuden

HK060391NJ-T

FIXED INDUCTOR 91NH 0201

Panasonic

ECW-U1C474JC9

ECW Series 16 V 0.47 uF ±5 % Stacked Metallized Polyethylene Film Chip Capacitor

Amphenol RF

095Z820-162M100

RF Cable Assemblies FAKRA Straight Plug to SMA Straight Plug RG-174 50 Ohm 1 m Z Key Code

TDK

MDF1005GAD102ATD25

Fixed Inductors 0402 190ohm 100MHz 550mA AEC-Q200

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