DS1302Z+ Maxim Integrated Products, DS1302Z+ Datasheet

IC TIMEKEEPER W/CHARGER 8-SOIC

DS1302Z+

Manufacturer Part Number
DS1302Z+
Description
IC TIMEKEEPER W/CHARGER 8-SOIC
Manufacturer
Maxim Integrated Products
Type
Clock/Calendar/Trickle-Chargerr
Datasheet

Specifications of DS1302Z+

Memory Size
31B
Time Format
HH:MM:SS (12/24 hr)
Date Format
YY-MM-DD-dd
Interface
3-Wire Serial
Voltage - Supply
2 V ~ 5.5 V
Operating Temperature
0°C ~ 70°C
Mounting Type
Surface Mount
Package / Case
8-SOIC (3.9mm Width)
Function
Clock/Calendar/Trickle Charger/NV Timekeeping RAM
Rtc Memory Size
31 Byte
Supply Voltage (max)
5.5 V
Supply Voltage (min)
2 V
Maximum Operating Temperature
+ 70 C
Minimum Operating Temperature
0 C
Mounting Style
SMD/SMT
Rtc Bus Interface
Serial (3-Wire)
Supply Current
1.2 mA
Clock Format
HH
Clock Ic Type
RTC
Ic Interface Type
3 Wire
Memory Configuration
31 X 8
Supply Voltage Range
2V To 5.5V
Digital Ic Case Style
SOIC
No. Of Pins
8
Rohs Compliant
Yes
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
www.maxim-ic.com
FEATURES
ORDERING INFORMATION
+Denotes a lead-free/RoHS-compliant package.
*An N anywhere on the top mark indicates an industrial temperature grade device. A + anywhere on the top mark indicates a lead-free device.
UL is a registered trademark of Underwriters Laboratories, Inc.
DS1302+
DS1302N+
DS1302S+
DS1302SN+
DS1302Z+
DS1302ZN+
Real-Time Clock Counts Seconds, Minutes,
Hours, Date of the Month, Month, Day of the
Week, and Year with Leap-Year
Compensation Valid Up to 2100
31 x 8 Battery-Backed General-Purpose RAM
Serial I/O for Minimum Pin Count
2.0V to 5.5V Full Operation
Uses Less than 300nA at 2.0V
Single-Byte or Multiple-Byte (Burst Mode)
Data Transfer for Read or Write of Clock or
RAM Data
8-Pin DIP or Optional 8-Pin SO for Surface
Mount
Simple 3-Wire Interface
TTL-Compatible (V
Optional Industrial Temperature Range:
-40°C to +85°C
DS1202 Compatible
Underwriters Laboratories (UL®)
Recognized
PART
CC
= 5V)
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
TEMP RANGE
0°C to +70°C
0°C to +70°C
0°C to +70°C
Trickle-Charge Timekeeping Chip
1 of 13
PIN-PACKAGE
8 PDIP (300 mils)
8 PDIP (300 mils)
8 SO (208 mils)
8 SO (150 mils)
8 SO (208 mils)
8 SO (150 mils)
PIN CONFIGURATIONS
TOP VIEW
SO (208 mils/150 mils)
GND
GND
V
V
CC2
X1
X2
CC2
X1
X2
DIP (300 mils)
1
2
3
4
1
2
3
4
TOP MARK*
8
7
6
5
8
7
DS1302ZN
6
5
DS1302S
DS1302S
DS1302Z
DS1302
DS1302
V
SCLK
I/O
CE
V
SCLK
I/O
CE
CC1
CC1
DS1302
REV: 120208

Related parts for DS1302Z+

DS1302Z+ Summary of contents

Page 1

... Recognized ORDERING INFORMATION PART DS1302+ DS1302N+ DS1302S+ DS1302SN+ DS1302Z+ DS1302ZN+ +Denotes a lead-free/RoHS-compliant package. *An N anywhere on the top mark indicates an industrial temperature grade device anywhere on the top mark indicates a lead-free device registered trademark of Underwriters Laboratories, Inc. Trickle-Charge Timekeeping Chip PIN CONFIGURATIONS TEMP RANGE PIN-PACKAGE 0° ...

Page 2

DETAILED DESCRIPTION The DS1302 trickle-charge timekeeping chip contains a real-time clock/calendar and 31 bytes of static RAM. It communicates with a microprocessor via a simple serial interface. The real-time clock/calendar provides seconds, minutes, hours, day, date, month, and year information. ...

Page 3

Figure 1. Block Diagram v POWER CC1 v CONTROL CC2 GND CE INPUT SHIFT I/O REGISTERS CONTROL LOGIC SCLK TYPICAL OPERATING CHARACTERISTICS (V = 3.3V +25°C, unless otherwise noted vs. V CC1T CC1T 400 350 ...

Page 4

PIN DESCRIPTION PIN NAME Primary Power-Supply Pin in Dual Supply Configuration. V backup source to maintain the time and date in the absence of primary power. The 1 V DS1302 operates from the larger of V CC2 0.2V, V powers ...

Page 5

OSCILLATOR CIRCUIT The DS1302 uses an external 32.768kHz crystal. The oscillator circuit does not require any external resistors or capacitors to operate. Table 1 specifies several crystal parameters for the external crystal. Figure 1 shows a functional schematic of the ...

Page 6

CE AND CLOCK CONTROL Driving the CE input high initiates all data transfers. The CE input serves two functions. First, CE turns on the control logic that allows access to the shift register for the address/command sequence. Second, the CE ...

Page 7

CLOCK HALT FLAG Bit 7 of the seconds register is defined as the clock halt (CH) flag. When this bit is set to logic 1, the clock oscillator is stopped and the DS1302 is placed into a low-power standby mode ...

Page 8

CLOCK/CALENDAR BURST MODE The clock/calendar command byte specifies burst mode operation. In this mode, the first eight clock/calendar registers can be consecutively read or written (see Table 3) starting with bit 0 of address 0. If the write-protect bit is ...

Page 9

Table 3. Register Address/Definition RTC READ WRITE BIT 7 BIT 6 81h 80h CH 83h 82h 12/ 24 85h 84h 0 87h 86h 0 0 89h 88h 0 0 8Bh 8Ah 0 0 8Dh 8Ch 8Fh 8Eh WP 0 91h ...

Page 10

ABSOLUTE MAXIMUM RATINGS Voltage Range on Any Pin Relative to Ground……………………………………………………………….-0.5Vto +7.0V Operating Temperature Range, Commercial………………………………………………………………….0°C to +70°C Operating Temperature Range, Industrial (IND)……………………………………………………………-40°C to +85°C Storage Temperature Range……………………………………………………………………………..….-55°C to +125°C Soldering Temperature (leads, 10 seconds)………………………………………………………………..………….260°C Soldering Temperature (surface mount)………………………………………………..…….See IPC/JEDEC ...

Page 11

CAPACITANCE (T = +25°C) A PARAMETER SYMBOL Input Capacitance C I/O Capacitance C AC ELECTRICAL CHARACTERISTICS (T = 0°C to +70° -40°C to +85°C.) (Note PARAMETER Data to CLK Setup CLK to Data Hold ...

Page 12

Figure 6. Timing Diagram: Read Data Transfer SCLK CDH t DC I/O ADDRESS/COMMAND BYTE Figure 7. Timing Diagram: Write Data Transfer SCLK CDH t ...

Page 13

... 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. DS1302 Trickle-Charge Timekeeping Chip ...

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