DS1315EN5 datasheet, PDF - EEWORLD Datasheet

Datasheet> All Categories > The embedded processor and controller> Microcontrollers and processors> DS1315EN5

DS1315EN5: Description0 TIMER(S), REAL TIME CLOCK, PDSO20, 4.40 MM, TSSOP-20; CategoryThe embedded processor and controller Microcontrollers and processors; File Size325KB，23 Pages; ManufacturerMaxim; Websitehttps://www.maximintegrated.com/en.html

Download Datasheet Parametric Compare View All

DS1315EN5 Overview

0 TIMER(S), REAL TIME CLOCK, PDSO20, 4.40 MM, TSSOP-20

DS1315EN5 Parametric

Parameter Name	Attribute value
Is it Rohs certified?	incompatible
Parts packaging code	TSSOP
package instruction	,
Contacts	20
Reach Compliance Code	compli
Information access methods	SERIAL, FIXED PROTOCOL
JESD-30 code	R-PDSO-G20
Number of terminals	20
Number of timers
Maximum operating temperature	85 °C
Minimum operating temperature	-40 °C
Package body material	PLASTIC/EPOXY
Package shape	RECTANGULAR
Package form	SMALL OUTLINE
Certification status	Not Qualified
Maximum supply voltage	5.5 V
Minimum supply voltage	4.5 V
Nominal supply voltage	5 V
surface mount	YES
Temperature level	INDUSTRIAL
Terminal form	GULL WING
Terminal location	DUAL
uPs/uCs/peripheral integrated circuit type	TIMER, REAL TIME CLOCK
Base Number Matches	1

Preview

Download Datasheet

View All

www.dalsemi.com

www.maxim-ic.com

DS1315

Phantom Time Chip

FEATURES



Real-Time Clock Keeps Track of Hundredths

of Seconds, Seconds, Minutes, Hours, Days,

Date of the Month, Months, and Years

Adjusts for Months with Fewer than 31 Days

Automatic Leap Year Correction Valid Up to

2100

No Address Space Required to Communicate

with RTC

Provides Nonvolatile Controller Functions for

Battery Backup of SRAM

Supports Redundant Battery Attachment for

High-Reliability Applications

Full ±10% V

Operating Range

+3.3V or +5V Operation

Industrial (–45°C to +85°C) Operating

Temperature Ranges Available

Drop-In Replacement for DS1215

DESCRIPTION

The DS1315 Phantom Time Chip is a

combination of a CMOS timekeeper and a

nonvolatile memory controller. In the absence of

power, an external battery maintains the

timekeeping operation and provides power for a

CMOS static RAM. The watch keeps track of

hundredths of seconds, seconds, minutes, hours,

day, date, month, and year information. The last

day of the month is automatically adjusted for

months with less than 31 days, including leap

year correction. The watch operates in one of two

formats: a 12-hour mode with an AM/PM

indicator or a 24-hour mode. The nonvolatile

controller supplies all the necessary support

circuitry to convert a CMOS RAM to a

nonvolatile memory. The DS1315 can be

interfaced with either RAM or ROM without

leaving gaps in memory.

PIN CONFIGURATIONS

PIN DESCRIPTION

X1, X2

BAT1

GND

CC1

CC0

BAT2

RST

CEI

CEO

ROM/RAM

DS1315

BAT1

GND

ROM/

RAM

CEO

CEI

RST

DIP (300 mils)

Pin Configurations continued at end of data sheet.

BAT2

CC0

CC1

- 32.768 kHz Crystal Connection

- Write Enable

- Battery 1 Input

- Ground

- Data Input

- Data Output

- ROM/RAM Mode Select

- Chip Enable Output

- Chip Enable Input

- Output Enable

- Reset

- Battery 2 Input

- Switched Supply Output

- Power Supply Input

Note:

Some revisions of this device may incorporate deviations from published specifications known as errata. Multiple revisions of any device

may be simultaneously available through various sales channels. For information about device errata, click here:

www.maxim-ic.com/errata.

1 of 21

REV: 090407

DS1315 Phantom Time Chip

Operation

Communication with the Time Chip is established by pattern recognition of a serial bit stream of 64 bits

which must be matched by executing 64 consecutive write cycles containing the proper data on data in

(D). All accesses which occur prior to recognition of the 64-bit pattern are directed to memory via the

chip enable output pin (

CEO

After recognition is established, the next 64 read or write cycles either extract or update data in the Time

Chip and

CEO

remains high during this time, disabling the connected memory.

Data transfer to and from the timekeeping function is accomplished with a serial bit stream under control

of chip enable input (

CEI

), output enable (

), and write enable (

). Initially, a read cycle using the

CEI

and

control of the Time Chip starts the pattern recognition sequence by moving pointer to the

first bit of the 64-bit comparison register. Next, 64 consecutive write cycles are executed using the

CEI

and

control of the Time Chip. These 64 write cycles are used only to gain access to the Time Chip.

When the first write cycle is executed, it is compared to bit 1 of the 64-bit comparison register. If a match

is found, the pointer increments to the next location of the comparison register and awaits the next write

cycle. If a match is not found, the pointer does not advance and all subsequent write cycles are ignored. If

a read cycle occurs at any time during pattern recognition, the present sequence is aborted and the

comparison register pointer is reset. Pattern recognition continues for a total of 64 write cycles as

described above until all the bits in the comparison register have been matched. (This bit pattern is shown

in Figure 2). With a correct match for 64 bits, the Time Chip is enabled and data transfer to or from the

timekeeping registers may proceed. The next 64 cycles will cause the Time Chip to either receive data on

D, or transmit data on Q, depending on the level of

pin or the

pin. Cycles to other locations

outside the memory block can be interleaved with

CEI

cycles without interrupting the pattern recognition

sequence or data transfer sequence to the Time Chip.

A standard 32.768 kHz quartz crystal can be directly connected to the DS1315 via pins 1 and 2 (X1, X2).

The crystal selected for use should have a specified load capacitance (C

) of 6 pF. For more information

on crystal selection and crystal layout considerations, please consult Application Note 58, “Crystal

Considerations with Dallas Real Time Clocks.”

4 of 23

DS1315EN5 Related Products

	DS1315EN5	DS131533	DS1315SN5	DS1315S5	DS1315S33	DS1315N33	DS1315E33	DS1315E5
Description	0 TIMER(S), REAL TIME CLOCK, PDSO20, 4.40 MM, TSSOP-20	0 TIMER(S), REAL TIME CLOCK, PDIP16, 0.300 INCH, DIP-16	0 TIMER(S), REAL TIME CLOCK, PDSO16, 0.300 INCH, SOP-16	Real Time Clock, 0 Timer(s), CMOS, PDSO16, 0.300 INCH, SOP-16	0 TIMER(S), REAL TIME CLOCK, PDSO16, 0.300 INCH, SOP-16	0 TIMER(S), REAL TIME CLOCK, PDIP16, 0.300 INCH, DIP-16	Real Time Clock, 0 Timer(s), CMOS, PDSO20, 4.40 MM, TSSOP-20	Real Time Clock, 0 Timer(s), CMOS, PDSO20, 4.40 MM, TSSOP-20
Parts packaging code	TSSOP	DIP	SOIC	SOIC	SOIC	DIP	TSSOP	TSSOP
package instruction	,	0.300 INCH, DIP-16	0.300 INCH, SOP-16	0.300 INCH, SOP-16	,	0.300 INCH, DIP-16	4.40 MM, TSSOP-20	4.40 MM, TSSOP-20
Contacts	20	16	16	16	16	16	20	20
Reach Compliance Code	compli	compliant	unknown	not_compliant	compliant	compliant	not_compliant	not_compliant
Information access methods	SERIAL, FIXED PROTOCOL	SERIAL, FIXED PROTOCOL	SERIAL, FIXED PROTOCOL	SERIAL, FIXED PROTOCOL	SERIAL, FIXED PROTOCOL	SERIAL, FIXED PROTOCOL	SERIAL, FIXED PROTOCOL	SERIAL, FIXED PROTOCOL
JESD-30 code	R-PDSO-G20	R-PDIP-T16	R-PDSO-G16	R-PDSO-G16	R-PDSO-G16	R-PDIP-T16	R-PDSO-G20	R-PDSO-G20
Number of terminals	20	16	16	16	16	16	20	20
Maximum operating temperature	85 °C	70 °C	85 °C	70 °C	70 °C	85 °C	70 °C	70 °C
Package body material	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY
Package shape	RECTANGULAR	RECTANGULAR	RECTANGULAR	RECTANGULAR	RECTANGULAR	RECTANGULAR	RECTANGULAR	RECTANGULAR
Package form	SMALL OUTLINE	IN-LINE	SMALL OUTLINE	SMALL OUTLINE	SMALL OUTLINE	IN-LINE	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH
Certification status	Not Qualified	Not Qualified	Not Qualified	Not Qualified	Not Qualified	Not Qualified	Not Qualified	Not Qualified
Maximum supply voltage	5.5 V	3.6 V	5.5 V	5.5 V	3.6 V	3.6 V	3.6 V	5.5 V
Minimum supply voltage	4.5 V	3 V	4.5 V	4.5 V	3 V	3 V	3 V	4.5 V
Nominal supply voltage	5 V	3.3 V	5 V	5 V	3.3 V	3.3 V	3.3 V	5 V
surface mount	YES	NO	YES	YES	YES	NO	YES	YES
Temperature level	INDUSTRIAL	COMMERCIAL	INDUSTRIAL	COMMERCIAL	COMMERCIAL	INDUSTRIAL	COMMERCIAL	COMMERCIAL
Terminal form	GULL WING	THROUGH-HOLE	GULL WING	GULL WING	GULL WING	THROUGH-HOLE	GULL WING	GULL WING
Terminal location	DUAL	DUAL	DUAL	DUAL	DUAL	DUAL	DUAL	DUAL
uPs/uCs/peripheral integrated circuit type	TIMER, REAL TIME CLOCK	TIMER, REAL TIME CLOCK	TIMER, REAL TIME CLOCK	TIMER, REAL TIME CLOCK	TIMER, REAL TIME CLOCK	TIMER, REAL TIME CLOCK	TIMER, REAL TIME CLOCK	TIMER, REAL TIME CLOCK
Base Number Matches	1	1	1	1	1	1	1	1
Is it Rohs certified?	incompatible	incompatible	-	incompatible	incompatible	incompatible	incompatible	incompatible
Maker	-	Maxim	Maxim	Maxim	Maxim	Maxim	Maxim	Maxim

Recommended Resources

Voltage transformer circuit a

Application circuit of LT3468 dual output boost LED driver

Working circuit diagram of voltage regulator 5a

Computer motherboard circuit diagram 815 4_34

Color TV remote control 08

Can the voltage comparator of CH554 generate an interrupt?: Can the voltage comparator of CH554 generate an interrupt? There seems to be no clear description in the PDF. CMP0 is the output of the comparator, and CMP_IF can be set to 1 when the output result ch...; Rikka0w0 51mcu

EEWORLD University Hall ---- Zhou Gong Series Lectures —— CAXA Electronic Chart Example: Zhou Gong Lecture Series - CAXA Electronic Plate Example : https://training.eeworld.com.cn/course/67843...; EE大学堂 Embedded System

Discussion on CE interrupt mechanism and bare metal interrupt: Does the interrupt mechanism of CE have the concept of PC pointer jumping to interrupt vector and then entering interrupt service routine? I see that CE kernel function does not seem to have the conce...; fanfanme Embedded System

Automotive industry information technology investment enters a new growth stage: The report on the informatization of my country's automobile industry released recently shows that due to the decline in profits, the informatization investment in my country's automobile industry wil...; frozenviolet Automotive Electronics

1. I came across a good thing and I don’t forget to share it with you: Analysis of laptop batteries and energy-saving technology: [size=2] [color=black][b]Keep the power flowing[/b] - A detailed analysis of laptop batteries and energy-saving technologies[/color] [/size] [size=2] Different from desktop computers, the small intern...; 雪山飞狐 Power technology

Download the 2009 Tektronix Spring Innovation Forum presentation materials: ...; 绿茶 Test/Measurement

Shortcut: S0 S1 S2 S3 S4 S5 S6 S7 S8 S9 SA SB SC SD SE SF SG SH SI SJ SK SL SM SN SO SP SQ SR SS ST SU SV SW SX SY SZ T0 T1 T2 T3 T4 T5 T6 T7 T8 T9 TA TB TC TD TE TF TG TH TI TJ TK TL TM TN TO TP TQ TR TS TT TU TV TW TX TY TZ U0 U1 U2 U3 U4 U6 U7 U8 UA UB UC UD UE UF UG UH UI UJ UK UL UM UN UP UQ UR US UT UU UV UW UX UZ V0 V1 V2 V3 V4 V5 V6 V7 V8 V9 VA VB VC VD VE VF VG VH VI VJ VK VL VM VN VO VP VQ VR VS VT VU VV VW VX VY VZ W0 W1 W2 W3 W4 W5 W6 W7 W8 W9 WA WB WC WD WE WF WG WH WI WJ WK WL WM WN WO WP WR WS WT WU WV WW WY X0 X1 X2 X3 X4 X5 X7 X8 X9 XA XB XC XD XE XF XG XH XK XL XM XN XO XP XQ XR XS XT XU XV XW XX XY XZ Y0 Y1 Y2 Y4 Y5 Y6 Y9 YA YB YC YD YE YF YG YH YK YL YM YN YP YQ YR YS YT YX Z0 Z1 Z2 Z3 Z4 Z5 Z6 Z8 ZA ZB ZC ZD ZE ZF ZG ZH ZJ ZL ZM ZN ZP ZR ZS ZT ZU ZV ZW ZX ZY

Popular Components