DS1386P-32-120+ Maxim Integrated Products, DS1386P-32-120+ Datasheet

DS1386P-32-120+

Manufacturer Part Number

DS1386P-32-120+

Description

IC TIMEKEEPER RAM 256K 32-PCM

Manufacturer

Maxim Integrated Products

Type

Clock/Calendar/NVSRAMr

Datasheet

1.DS1386-32-120.pdf (21 pages)

Specifications of DS1386P-32-120+

Memory Size

256K (32K x 8)

Time Format

HH:MM:SS:hh (12/24 hr)

Date Format

YY-MM-DD-dd

Interface

Parallel

Voltage - Supply

4.5 V ~ 5.5 V

Operating Temperature

0°C ~ 70°C

Mounting Type

Surface Mount

Package / Case

34-PowerCap™ Module

Lead Free Status / RoHS Status

Lead free / RoHS Compliant

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ORDERING INFORMATION

+ Denotes a lead-free/RoHS-compliant device.

GENERAL DESCRIPTION

The DS1386 is a nonvolatile static RAM with a

full-function

watchdog timer, and interval timer that are all

accessible in a byte-wide format. The DS1386

contains a lithium energy source and a quartz

crystal, which eliminates the need for any external

circuitry. Data contained within 8k or 32k by 8-bit

memory and the timekeeping registers can be read

or written in the same manner as byte-wide static

RAM. The timekeeping registers are located in the

first 14 bytes of memory space. Data is maintained

in the RAMified timekeeper by intelligent control

circuitry, which detects the status of V

protects memory when V

lithium energy source can maintain data and real

time for over ten years in the absence of V

Timekeeper information includes hundredths of

seconds, seconds, minutes, hours, day, date, month,

and year. The date at the end of the month is

automatically adjusted for months with less than 31

days, including correction for leap year.

The RAMified timekeeper operates in either 24-

hour or 12-hour format with an AM/PM indicator.

The watchdog timer provides alarm interrupts and

interval timing between 0.01 seconds and 99.99

seconds. The real-time alarm provides for preset

times of up to one week. Interrupts for both

watchdog and RTC operate when the system is

powered down. Either can provide system “wake-

up” signals.

www.maxim-ic.com

DS9034PCX PowerCap required (must be ordered separately).

DS1386-8-120

DS1386-8-120+

DS1386-32-120

DS1386-32-120+

DS1386P-8-120

DS1386P-8-120+

DS1386P-32-120

DS1386P-32-120+

PART

real-time

TEMP RANGE

clock

is out of tolerance. The

0°C to +70°C

(RTC),

and write

alarm,

VOLTAGE (V)

RAMified Watchdog Timekeeper

1 of 21

5.0

FEATURES

Pin Configurations appear at end of data sheet.

8kB or 32kB of User NV RAM

Integrated NV SRAM, Real-Time Clock,

Crystal, Power-Fail Control Circuit, and

Lithium Energy Source

Totally Nonvolatile With Over 10 Years of

Operation in the Absence of Power

Watchdog Timer Restarts an Out-Of-

Control Processor

Alarm Function Schedules Real-Time

Related Activities such as System Wakeup

Programmable Interrupts and Square-

Wave Output

All Registers are Individually Addressable

via the Address and Data Bus

Interrupt Signals are Active in Power-

Down Mode

PIN-PACKAGE

32 EMOD (0.740″)

34 PowerCap*

DS1386/DS1386P

TOP MARK

DS1386-8K-120

DS1386-8K+120

DS1386-32K-120

DS1386-32K+120

DS1386P-8K-120

DS1386P+8K-120

DS1386P-32K-120

DS1386P+32K-120

REV: 010307

Related parts for DS1386P-32-120+

DS1386P-32-120+ Summary of contents

Page 1

... DS1386-32-120+ 0°C to +70°C DS1386P-8-120 0°C to +70°C DS1386P-8-120+ 0°C to +70°C DS1386P-32-120 0°C to +70°C DS1386P-32-120+ 0°C to +70°C + Denotes a lead-free/RoHS-compliant device. * DS9034PCX PowerCap required (must be ordered separately). RAMified Watchdog Timekeeper FEATURES 8kB or 32kB of User NV RAM (RTC), ...

Page 2

PIN DESCRIPTION PIN EMOD PowerCap 32k 32k — 31 ...

Page 3

... PowerCap (DS9034PCX) that contains the crystal and battery. This design allows the PowerCap to be mounted on top of the DS1386P after the completion of the surface mount process. Mounting the PowerCap after the surface mount process prevents damage to the crystal and battery due to high temperatures required for solder reflow ...

Page 4

... The DS1386 is guaranteed to keep time accuracy to within ±1 minute per month at +25°C. CLOCK ACCURACY (POWERCAP MODULE) The DS1386P and DS9034PCX are each individually tested for accuracy. Once mounted together, the module is guaranteed to keep time accuracy to within ±1.53 minutes per month (35ppm) at +25°C. ...

Page 5

Figure 1. Block Diagram ...

Page 6

TIME-OF-DAY REGISTERS Registers 0 through A contain time, date, and alarm data in BCD. Fifteen bits within these 11 registers are not used and will always read 0 regardless of how they are written. Bits 6 and 7 in the ...

Page 7

WATCHDOG ALARM REGISTERS Registers C and D contain the time for the watchdog alarm. The two registers contain a time count from 00.01 to 99.99 seconds in BCD. The value written into the Watchdog Alarm Registers can be written or ...

Page 8

Figure 2. DS1386 RAMified Watchdog Timekeeper Registers Table 1. Time-of-Day Alarm Mask Bits REGISTER (3) MINUTES (5) HOURS Note: Any other bit combinations of mask bit settings produce illogical operation. (7) DAYS ...

Page 9

COMMAND REGISTER Address location 0Bh is the Command Register where mask bits, control bits and flag bits reside. The operation of each bit is as follows: Bit 7: TE (Transfer Enable). This bit when set to a logic 0 will ...

Page 10

ABSOLUTE MAXIMUM RATINGS Voltage Range on Any Pin Relative to Ground……………………………………………..-0.3V to +7.0V Operating Temperature Range………………………………………………………………...0°C to +70°C Storage Temperature Range………………………………………………………………...-40°C to +70°C Soldering Temperature…………………………..See IPC/JEDEC J-STD-020 Specification (See Note 14) This is a stress rating only and functional operation ...

Page 11

AC ELECTRICAL CHARACTERISTICS = 5.0V ±10 0°C to 70°C PARAMETER Read Cycle Time Address Access Time CE Access Time OE Access Time Output Active Output High-Z from Deselect Output Hold from ...

Page 12

READ CYCLE (Note 1) WRITE CYCLE 1 (Notes WRITE CYCLE 2 (Notes ...

Page 13

TIMING DIAGRAM—INTERRUPT OUTPUTS PULSE MODE (See Notes 11 and 12) POWER-DOWN/POWER-UP TIMING ...

Page 14

AC ELECTRICAL CHARACTERISTICS POWER-UP/POWER-DOWN TIMING (T = 0°C to +70°C) A PARAMETER CE High to Power Fail Recovery at Power-Up V Slew Rate Power-Down CC V Slew Rate Power-Down CC V Slew Rate Power-Up CC Expected Data Retention WARNING: Under ...

Page 15

NOTES high for a read cycle specified as the logical AND of the CE and WE going low to ...

Page 16

... A10 DQ7 DQ6 DQ0 14 19 DQ1 DQ5 15 18 DQ2 DQ4 17 16 GND DQ3 32k x 8 Encapsulated Module 1 2 N.C. 3 N.C. DS1386P 4 PFO GND V X2 BAT 16 17 32k x 8 PowerCap Module Board (Uses DS9034PCX PowerCap) INTA 34 33 SQW 32 A14 31 A13 30 A12 29 A11 ...

Page 17

PACKAGE INFORMATION (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information www.maxim-ic.com/DallasPackInfo ...

Page 18

PACKAGE INFORMATION (continued) (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information www.maxim-ic.com/DallasPackInfo ...

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... No circuit patent licenses are implied. Maxim/Dallas Semiconductor reserves the right to change the circuitry and specifications without notice at any time The Maxim logo is a registered trademark of Maxim Integrated Products, Inc. The Dallas logo is a registered trademark of Dallas Semiconductor Corporation © 2007 Maxim Integrated Products ...

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