DS1372U+ Maxim Integrated Products, DS1372U+ Datasheet

IC BINARY COUNTER 32-BIT 8-USOP

DS1372U+

Manufacturer Part Number
DS1372U+
Description
IC BINARY COUNTER 32-BIT 8-USOP
Manufacturer
Maxim Integrated Products
Type
Binary Counterr
Datasheet

Specifications of DS1372U+

Time Format
Binary
Date Format
Binary
Interface
I²C, 2-Wire Serial
Voltage - Supply
2.4 V ~ 5.5 V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
8-MSOP, Micro8™, 8-uMAX, 8-uSOP,
Counter Type
Binary Counters
Number Of Bits
32
Counting Sequence
Up/Down
Operating Temperature Range
- 40 C to + 85 C
Mounting Style
SMD/SMT
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Memory Size
-
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
The DS1372 is a 32-bit binary up counter and 24-bit
down counter with a unique 64-bit ID. The counters, ID,
configuration, and status registers are accessed using
an I
SQW/INT open-drain output that can output either a
square wave at one of four predefined frequencies, or it
can output an active-low signal when the 24-bit down
counter reaches 0.
Rev 0; 7/07
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
I
2
2
C serial interface. The DS1372 includes a
C, 32-Bit, Binary Counter Clock with 64-Bit ID
Portable Audio and Video Players
TOP VIEW
GND
AD0
X1
X2
________________________________________________________________ Maxim Integrated Products
1
2
3
4
+
General Description
DS1372
μSOP
Pin Configuration
CPU
V
CC
8
7
6
5
Applications
R
PU
V
SQW/INT
SCL
SDA
R
CC
PU
= t
R
R
/ C
PU
B
V
CC
SCL
SDA
X1
CRYSTAL
DS1372
♦ Compliant with Microsoft Windows Media
♦ 32-Bit Binary Counter
♦ Programmable Alarm
♦ 64-Bit Factory-Programmed ID
♦ Interrupt Output
♦ I
♦ Two Selectable I
♦ 2.4V to 5.5V Operating Voltage Range
♦ 1.3V to 5.5V Timekeeping Operating Range
♦ -40°C to +85°C Operating Temperature Range
♦ 8-Pin µSOP
+ Denotes a lead-free package. This symbol also appears on the
top mark.
Windows Media is a registered trademark of Microsoft Corp.
GND
DS1372U+
10 for Portable Devices
2
PART
X2 V
C Serial Interface
V
SQW/INT
CC
CC
AD0
-40°C to +85°C
TEMP RANGE
Typical Operating Circuit
2
C Addresses
Ordering Information
PIN-PACKAGE
8 μSOP
Features
®
MARK
DRM
1372
TOP
1

Related parts for DS1372U+

DS1372U+ Summary of contents

Page 1

... Operating Voltage Range ♦ 1.3V to 5.5V Timekeeping Operating Range ♦ -40°C to +85°C Operating Temperature Range ♦ 8-Pin µSOP V CC PART SQW/INT SCL DS1372U+ SDA + Denotes a lead-free package. This symbol also appears on the top mark. Windows Media is a registered trademark of Microsoft Corp CRYSTAL CC ...

Page 2

I C, 32-Bit, Binary Counter Clock with 64-Bit ID ABSOLUTE MAXIMUM RATINGS Voltage Range on Any Pin Relative to Ground…. .-0.3V to +6.0V Continuous Power Dissipation (T = +70°C) A (derate 4.5mW/°C above +70°C) ……………………. ....360mW Stresses beyond those ...

Page 3

I C, 32-Bit, Binary Counter Clock with 64-Bit ID ELECTRICAL CHARACTERISTICS (continued 2.4V to 5.5V -40°C to +85°C, unless otherwise noted.) (Note PARAMETER SYMBOL Data Setup Time (Note 10) t Rise Time ...

Page 4

I C, 32-Bit, Binary Counter Clock with 64-Bit ID PIN NAME Connections for Standard 32.768kHz Quartz Crystal. The internal oscillator circuitry is designed for operation with a crystal having a 12.5pF specified load capacitance ( X1, X2 ...

Page 5

I C, 32-Bit, Binary Counter Clock with 64-Bit ID Detailed Description The DS1372 is a 32-bit binary counter designed to con- tinuously count time in seconds. An additional counter is provided that can generate a periodic alarm. An interrupt ...

Page 6

I C, 32-Bit, Binary Counter Clock with 64-Bit ID Alarm Operation The alarm counter is a 24-bit counter in the address range 04h–06h. When the alarm counter is written, a seed register is written with the alarm counter value. ...

Page 7

I C, 32-Bit, Binary Counter Clock with 64-Bit ID Special Purpose Registers The DS1372 has two additional registers that control the alarm counter and interrupts: Control Register (07h) and Status Register (08h). Bit # 7 6 Name ACE Reset ...

Page 8

I C, 32-Bit, Binary Counter Clock with 64-Bit ID Bit # 7 6 Name OSF 0 Reset 1 0 Status Register (08h) Bit 7: Oscillator Stop Flag (OSF). A logic 1 in this bit indicates that the oscillator either ...

Page 9

I C, 32-Bit, Binary Counter Clock with 64-Bit ID SDA t BUF t LOW SCL t HD:STA STOP START 2 Figure 4. Data Transfer Serial Bus SDA MSB SLAVE ADDRESS SCL 1 2 START CONDITION 2 ...

Page 10

I C, 32-Bit, Binary Counter Clock with 64-Bit ID Accordingly, the following bus conditions have been defined: Bus not busy: Both data and clock lines remain high. Start data transfer: A change in the state of the data line ...

Page 11

I C, 32-Bit, Binary Counter Clock with 64-Bit ID 2) Slave transmitter mode (DS1372 read mode): The first byte is received and handled as in the slave receiver mode. However, in this mode, the direction bit indicates that the ...

Page 12

... Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. 12 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 2007 Maxim Integrated Products For the latest package outline information www ...

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