M48T18-150PC1 datasheet, PDF - EEWORLD Datasheet

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M48T18-150PC1: DescriptionReal Time Clock 64K (8Kx8) 150ns; CategoryThe embedded processor and controller Microcontrollers and processors; File Size451KB，31 Pages; ManufacturerSTMicroelectronics; Websitehttp://www.st.com/

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Real Time Clock 64K (8Kx8) 150ns

M48T18-150PC1 Parametric

Parameter Name	Attribute value
Brand Name	STMicroelectronics
Maker	STMicroelectronics
Parts packaging code	DIP
package instruction	DIP, DIP28,.6
Contacts	28
Reach Compliance Code	compliant
ECCN code	EAR99
Factory Lead Time	25 weeks
Samacsys Description	TIMEKEEPER® SRAM
maximum clock frequency	0.032 MHz
External data bus width	8
Information access methods	PARALLEL, DIRECT ADDRESS
interrupt capability	N
JESD-30 code	R-PDIP-T28
JESD-609 code	e3
length	39.625 mm
Number of terminals	28
Number of timers
On-chip data RAM width	8
Maximum operating temperature	70 °C
Minimum operating temperature
Package body material	PLASTIC/EPOXY
encapsulated code	DIP
Encapsulate equivalent code	DIP28,.6
Package shape	RECTANGULAR
Package form	IN-LINE
Peak Reflow Temperature (Celsius)	NOT SPECIFIED
Certification status	Not Qualified
RAM (number of words)	8184
Maximum seat height	9.65 mm
Maximum slew rate	80 mA
Maximum supply voltage	5.5 V
Minimum supply voltage	4.5 V
Nominal supply voltage	5 V
surface mount	NO
technology	CMOS
Temperature level	COMMERCIAL
Terminal surface	Matte Tin (Sn)
Terminal form	THROUGH-HOLE
Terminal pitch	2.54 mm
Terminal location	DUAL
shortest time	SECONDS
Maximum time at peak reflow temperature	NOT SPECIFIED
Volatile	NO
width	15.24 mm
uPs/uCs/peripheral integrated circuit type	TIMER, REAL TIME CLOCK
Base Number Matches	1

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M48T08

M48T08Y, M48T18

5 V, 64 Kbit (8 Kb x 8) TIMEKEEPER

SRAM

Features

■

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

PFD

= power-fail deselect voltage):

– M48T08: V

= 4.75 to 5.5 V;

4.5 V

≤

PFD

≤

4.75 V

– M48T18/T08Y: V

= 4.5 to 5.5 V;

4.2 V

≤

PFD

≤

4.5 V

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 8 K x 8 SRAMs

RoHS compliant

– Lead-free second level interconnect

PCDIP28

battery/crystal

CAPHAT™

■

SNAPHAT

battery/crystal

■

SOH28

June 2011

Doc ID 2411 Rev 11

1/31

www.st.com

Contents

M48T08, M48T08Y, M48T18

Contents

Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Operation modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

2.1

2.2

2.3

2.4

READ mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

WRITE mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Data retention mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Power-fail interrupt pin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Clock operations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

3.1

3.2

3.3

3.4

3.5

Reading the clock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Setting the clock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Stopping and starting the oscillator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Calibrating the clock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

noise and negative going transients . . . . . . . . . . . . . . . . . . . . . . . . . 18

Maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

DC and AC parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Part numbering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

Environmental information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

2/31

Doc ID 2411 Rev 11

M48T08, M48T08Y, M48T18

List of tables

Table 1.

Table 2.

Table 3.

Table 4.

Table 5.

Table 6.

Table 7.

Table 8.

Table 9.

Table 10.

Table 11.

Table 12.

Table 13.

Table 14.

Table 15.

Table 16.

Table 17.

Table 18.

Signal names . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Operating modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

READ mode AC characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

WRITE mode AC characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Register map . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Operating and AC measurement conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Capacitance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

DC characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Power down/up AC characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Power down/up trip points DC characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

PCDIP28 – 28-pin plastic DIP, battery CAPHAT™, package mech. data . . . . . . . . . . . . . 23

SOH28 – 28-lead plastic SO, 4-socket battery SNAPHAT

, package mech. data. . . . . . . 24

SH – 4-pin SNAPHAT

housing for 48 mAh battery & crystal, package mech. data . . . . . 25

SH – 4-pin SNAPHAT

housing for 120 mAh battery & crystal, package mech. data . . . . 26

Ordering information scheme . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

SNAPHAT® battery table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

Document revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

Doc ID 2411 Rev 11

3/31

List of figures

M48T08, M48T08Y, M48T18

List of figures

Figure 1.

Figure 2.

Figure 3.

Figure 4.

Figure 5.

Figure 6.

Figure 7.

Figure 8.

Figure 9.

Figure 10.

Figure 11.

Figure 12.

Figure 13.

Figure 14.

Figure 15.

Figure 16.

Figure 17.

Logic diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

DIP connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

SOIC connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

READ mode AC waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

WRITE enable controlled, WRITE AC waveform . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Chip enable controlled, WRITE AC waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Crystal accuracy across temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Clock calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Supply voltage protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

AC testing load circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Power down/up mode AC waveforms. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

PCDIP28 – 28-pin plastic DIP, battery CAPHAT™, package outline . . . . . . . . . . . . . . . . . 23

SOH28 – 28-lead plastic small outline, 4-socket battery SNAPHAT

, package outline . . . 24

SH – 4-pin SNAPHAT

housing for 48 mAh battery & crystal, package outline. . . . . . . . . 25

SH – 4-pin SNAPHAT

housing for 120 mAh battery & crystal, package outline. . . . . . . . 26

Recycling symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

4/31

Doc ID 2411 Rev 11

M48T18-150PC1 Related Products

	M48T18-150PC1	M48T08Y-10MH1E	PCF-W2512-13-57R6-B-E-LT	M48T18-100PC1	M48T08Y-10MH1F
Description	Real Time Clock 64K (8Kx8) 150ns	Real Time Clock 64K (8Kx8) 100ns	Fixed Resistor, Thin Film, 0.5W, 57.6ohm, 150V, 0.1% +/-Tol, 5ppm/Cel, Surface Mount, 2512, CHIP	Real Time Clock 64K (8Kx8) 100ns	Real Time Clock 64K (8Kx8) 100ns
package instruction	DIP, DIP28,.6	0.330 INCH, ROHS COMPLIANT, PLASTIC, SOH-28	CHIP	DIP, DIP28,.6	SOP, SOP28,.5
Reach Compliance Code	compliant	compliant	compliant	compliant	not_compliant
ECCN code	EAR99	EAR99	EAR99	EAR99	EAR99
JESD-609 code	e3	e3	e0	e3	e3
Number of terminals	28	28	2	28	28
Maximum operating temperature	70 °C	70 °C	125 °C	70 °C	70 °C
Package form	IN-LINE	SMALL OUTLINE	SMT	IN-LINE	SMALL OUTLINE
surface mount	NO	YES	YES	NO	YES
technology	CMOS	CMOS	THIN FILM	CMOS	CMOS
Terminal surface	Matte Tin (Sn)	Tin (Sn)	Tin/Lead (Sn/Pb) - with Nickel (Ni) barrier	Matte Tin (Sn)	Tin (Sn)
Brand Name	STMicroelectronics	STMicroelectronics	-	STMicroelectronics	STMicroelectronics
Maker	STMicroelectronics	STMicroelectronics	-	STMicroelectronics	STMicroelectronics
Parts packaging code	DIP	SOIC	-	DIP	SOIC
Contacts	28	28	-	28	28
Factory Lead Time	25 weeks	-	-	8 weeks 1 day	26 weeks
maximum clock frequency	0.032 MHz	0.032 MHz	-	0.032 MHz	0.032 MHz
External data bus width	8	8	-	8	8
Information access methods	PARALLEL, DIRECT ADDRESS	PARALLEL, DIRECT ADDRESS	-	PARALLEL, DIRECT ADDRESS	PARALLEL, DIRECT ADDRESS
interrupt capability	N	N	-	N	N
JESD-30 code	R-PDIP-T28	R-PDSO-G28	-	R-PDIP-T28	R-PDSO-G28
length	39.625 mm	18.1 mm	-	39.625 mm	18.1 mm
Package body material	PLASTIC/EPOXY	PLASTIC/EPOXY	-	PLASTIC/EPOXY	PLASTIC/EPOXY
encapsulated code	DIP	SOP	-	DIP	SOP
Encapsulate equivalent code	DIP28,.6	SOP28,.5	-	DIP28,.6	SOP28,.5
Package shape	RECTANGULAR	RECTANGULAR	-	RECTANGULAR	RECTANGULAR
Peak Reflow Temperature (Celsius)	NOT SPECIFIED	260	-	NOT SPECIFIED	260
Certification status	Not Qualified	Not Qualified	-	Not Qualified	Not Qualified
Maximum seat height	9.65 mm	3.05 mm	-	9.65 mm	3.05 mm
Maximum supply voltage	5.5 V	5.5 V	-	5.5 V	5.5 V
Minimum supply voltage	4.5 V	4.5 V	-	4.5 V	4.5 V
Nominal supply voltage	5 V	5 V	-	5 V	5 V
Temperature level	COMMERCIAL	COMMERCIAL	-	COMMERCIAL	COMMERCIAL
Terminal form	THROUGH-HOLE	GULL WING	-	THROUGH-HOLE	GULL WING
Terminal pitch	2.54 mm	1.27 mm	-	2.54 mm	1.27 mm
Terminal location	DUAL	DUAL	-	DUAL	DUAL
shortest time	SECONDS	SECONDS	-	SECONDS	SECONDS
Maximum time at peak reflow temperature	NOT SPECIFIED	30	-	NOT SPECIFIED	30
Volatile	NO	NO	-	NO	NO
width	15.24 mm	8.56 mm	-	15.24 mm	8.56 mm
uPs/uCs/peripheral integrated circuit type	TIMER, REAL TIME CLOCK	TIMER, REAL TIME CLOCK	-	TIMER, REAL TIME CLOCK	TIMER, REAL TIME CLOCK
Base Number Matches	1	1	-	1	1
Is it Rohs certified?	-	conform to	incompatible	-	conform to

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