Rainbow Electronics DS1372 - Manual

General Description
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
2 C serial interface. The DS1372 includes a
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.
Applications
Portable Audio and Video Players
Features
♦ Compliant with Microsoft Windows Media ® DRM
10 for Portable Devices
♦ 32-Bit Binary Counter
♦ Programmable Alarm
♦ 64-Bit Factory-Programmed ID
♦ Interrupt Output
♦ I
2 C Serial Interface
♦ Two Selectable I 2 C Addresses
♦ 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
DS1372
________________________________________________________________ Maxim Integrated Products 1
1
2
3
4
8
7
6
5
V CC
SQW/INT
SCL
SDA GND
AD0
X2
X1
DS1372
μSOP
TOP VIEW
+
Pin Configuration
Ordering Information
SCL
SDA
SQW/INT
GND
R
PU
R
PU
= t
R
/ C
B
R
PU
CPU
V CC
V CC
X1 X2 V
CC
CRYSTAL V CC
DS1372
AD0
Typical Operating Circuit
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.
+ Denotes a lead-free package. This symbol also appears on the
top mark.
Windows Media is a registered trademark of Microsoft Corp.
PART TEMP RANGE PIN-PACKAGE
TOP
MARK
DS1372U+ -40 °C to +85°C 8 μSOP 1372
I
2
C, 32-Bit, Binary Counter Clock with 64-Bit ID