M48T86PC1 datasheet, PDF - EEWORLD Datasheet

Datasheet> All Categories > The embedded processor and controller> Microcontrollers and processors> M48T86PC1

M48T86PC1: DescriptionReal Time Clock 5 Volt PC Drop-In; CategoryThe embedded processor and controller Microcontrollers and processors; File Size287KB，36 Pages; ManufacturerSTMicroelectronics; Websitehttp://www.st.com/; Environmental Compliance

Download Datasheet Parametric View All

M48T86PC1 Online Shopping

Suppliers	Part Number	Price	MOQ	In stock
	M48T86PC1	-	-	View	Buy Now

M48T86PC1 Overview

Real Time Clock 5 Volt PC Drop-In

M48T86PC1 Parametric

Parameter Name	Attribute value
Is it Rohs certified?	conform to
Maker	STMicroelectronics
Parts packaging code	DIP
package instruction	DIP, DIP24,.6
Contacts	24
Reach Compliance Code	unknown
ECCN code	EAR99
maximum clock frequency	0.032 MHz
External data bus width	8
Information access methods	PARALLEL, MUXED BUS
interrupt capability	Y
JESD-30 code	R-PDIP-T24
JESD-609 code	e3
length	34.545 mm
Number of terminals	24
Number of timers	1
On-chip data RAM width	8
Maximum operating temperature	70 °C
Minimum operating temperature
Maximum output clock frequency	0.008192 MHz
Package body material	PLASTIC/EPOXY
encapsulated code	DIP
Encapsulate equivalent code	DIP24,.6
Package shape	RECTANGULAR
Package form	IN-LINE
Peak Reflow Temperature (Celsius)	260
power supply	5 V
Certification status	Not Qualified
RAM (number of words)	114
Maximum seat height	9.65 mm
Maximum slew rate	15 mA
Maximum supply voltage	5.5 V
Minimum supply voltage	4.5 V
Nominal supply voltage	5 V
surface mount	NO
technology	MOS
Temperature level	COMMERCIAL
Terminal surface	MATTE TIN
Terminal form	THROUGH-HOLE
Terminal pitch	2.54 mm
Terminal location	DUAL
shortest time	SECONDS
Maximum time at peak reflow temperature	10
Volatile	NO
width	15.24 mm
uPs/uCs/peripheral integrated circuit type	TIMER, REAL TIME CLOCK

Preview

Download Datasheet

View All

M48T86

5.0 V PC real-time clock

Not For New Design

Features

■

Drop-in replacement for PC computer

clock/calendar

Counts seconds, minutes, hours, days, day of

the week, date, month, and year with leap year

compensation

Clock accuracy better than

1 minute per

month

Interfaced with software as 128 RAM locations:

– 14 bytes of clock and control registers

– 114 bytes of general purpose RAM

Selectable bus timing (Intel/Motorola)

Three interrupts are separately software-

maskable and testable

– Time-of-day alarm (once/second to

once/day)

– Periodic rates from 122 µs to 500 ms

– End-of-clock update cycle

Programmable square wave output

■

-O

■

PCDIP24 (PC)

Battery/Crystal

CAPHAT

SNAPHAT (SH)

Battery/Crystal

10 years of data retention and clock operation

in the absence of power

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 contains the battery and crystal

Pin and function compatible with bq3285/7A

and DS12887

RoHS compliant

– Lead-free second level interconnect

SOH28 (MH)

December 2008

Rev 7

1/36

www.st.com

This is information on a product still in production but not recommended for new designs.

Contents

M48T86

Contents

Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

2.1

Signal description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

2.1.1

2.1.2

2.1.3

2.1.4

2.1.5

2.1.6

2.1.7

2.1.8

2.1.9

2.1.10

2.1.11

2.1.12

, V

SS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

SQW (square wave output) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

AD0-AD7 (multiplexed bidirectional address/data bus) . . . . . . . . . . . . . . 9

AS (address strobe input) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

MOT (mode select) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

DS (data strobe input) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

E (chip enable input) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

IRQ (interrupt request output) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

RST (reset input) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

RCL (RAM clear) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

R/W (read/write input) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Non-volatile RAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

-O

3.1

3.2

3.3

3.4

3.5

3.6

3.7

3.8

3.9

3.10

3.10.1

3.10.2

3.10.3

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

Address map . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Time, calendar, and alarm locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Interrupts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Periodic interrupt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Alarm interrupt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Update cycle interrupt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Oscillator control bits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Update cycle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Square wave output selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

UIP update in progress . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

OSC0, OSC1, OSC2 oscillator control . . . . . . . . . . . . . . . . . . . . . . . . . 19

RS3, RS2, RS1, RS0 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

3.11

3.11.1

SET . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

2/36

M48T86

3.11.2

3.11.3

3.11.4

3.11.5

3.11.6

3.11.7

3.11.8

Contents

PIE: periodic interrupt enable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

AIE: alarm interrupt enable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

UIE: update ended interrupt enable . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

SQWE: square wave enable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

DM: data mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

24/12 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

DSE: daylight savings enable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

3.12

3.12.1

3.12.2

3.12.3

3.12.4

3.12.5

IRQF: interrupt request flag . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

PF: periodic interrupt flag . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

AF: alarm flag . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

UF: update ended interrupt flag . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

BIT 0 through 3: unused bits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

3.13

3.13.1

3.13.2

VRT: valid RAM and time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

BIT 0 through 6: unused bits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

3.14

noise and negative going transients . . . . . . . . . . . . . . . . . . . . . . . . . 23

-O

Maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

DC and AC parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

Part numbering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

Environmental information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

3/36

List of tables

M48T86

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.

Table 19.

Table 20.

Table 21.

Signal names . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

AC characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Time, calendar, and alarm formats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Square wave frequency/periodic interrupt rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Register A MSB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Register B MSB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Register C MSB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Register D MSB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Operating and AC measurement conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Capacitance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

DC characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

Power down/up mode AC characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

Power down/up trip points DC characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

PCDIP24 – 24-pin plastic DIP, battery CAPHAT™, package mechanical data . . . . . . . . . 29

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

, package

mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

SH – 4-pin SNAPHAT

housing for 48 mAh battery and crystal, package

mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

SH – 4-pin SNAPHAT

housing for 120 mAh battery and crystal, package

mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

Ordering information scheme . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

SNAPHAT

battery table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

Document revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

-O

4/36

Recommended Resources

Light control switch circuit 3 controlled by flashlight

Micropower radiation detector circuit diagram

TIL153/TIL154/TIL155 type optocoupler circuit

Full wave light control circuit

875p computer motherboard circuit diagram_013

Computer motherboard circuit diagram 440LX2_02

Shortcut: A0 A1 A2 A3 A4 A5 A6 A7 A8 A9 AA AB AC AD AE AF AG AH AI AJ AK AL AM AN AO AP AQ AR AS AT AU AV AW AX AY AZ B0 B1 B2 B3 B4 B5 B6 B7 B8 B9 BA BB BC BD BE BF BG BH BI BJ BK BL BM BN BO BP BQ BR BS BT BU BV BW BX BY BZ C0 C1 C2 C3 C4 C5 C6 C7 C8 C9 CA CB CC CD CE CF CG CH CI CJ CK CL CM CN CO CP CQ CR CS CT CU CV CW CX CY CZ D0 D1 D2 D3 D4 D5 D6 D7 D8 D9 DA DB DC DD DE DF DG DH DI DJ DK DL DM DN DO DP DQ DR DS DT DU DV DW DX DZ

Popular Components