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参数资料
| 型号： | 5962-9566702MEX |
| 厂商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分类： | DAC |
| 英文描述： | DUAL, SERIAL INPUT LOADING, 12-BIT DAC, CDIP16 |
| 封装： | CERAMIC, DIP-16 |
| 文件页数： | 1/16页 |
| 文件大小： | 471K |
| 代理商： | 5962-9566702MEX |
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GENERAL DESCRIPTION
The DS1338 serial real-time clock (RTC) is a low-
power,
full
binary-coded
decimal
(BCD)
clock/calendar plus 56 bytes of NV SRAM. Address
and data are transferred serially through an I2C
interface. The clock/calendar provides seconds,
minutes, hours, day, date, month, and year
information. The end of the month date is
automatically adjusted for months with fewer than 31
days, including corrections for leap year. The clock
operates in either the 24-hour or 12-hour format with
AM/PM indicator. The DS1338 has a built-in power-
sense circuit that detects power failures and
automatically switches to the backup supply,
maintaining time and date operation
APPLICATIONS
Handhelds (GPS, POS Terminal)
Consumer Electronics (Set-Top Box, Digital
Recording, Network Appliance)
Office Equipment (Fax/Printer, Copier)
Medical (Glucometer, Medicine Dispenser)
Telecommunications (Router, Switcher, Server)
Other (Utility Meter, Vending Machine, Thermostat,
Modem)
TYPICAL OPERATING CIRCUIT
FEATURES
RTC Counts Seconds, Minutes, Hours, Date
of the Month, Month, Day of the Week, and
Year with Leap-Year Compensation Valid Up
to 2100
Available in a Surface-Mount Package with an
Integrated Crystal (DS1338C)
56-Byte Battery-Backed General-Purpose
RAM with Unlimited Writes
I2C Serial Interface
Programmable Square-Wave Output Signal
Automatic Power-Fail Detect and Switch
Circuitry
-40°C to +85°C Operating Temperature Range
Underwriters Laboratories (UL) Recognized
ORDERING INFORMATION
PART
TEMP RANGE
PIN-PACKAGE
TOP MARK
DS1338Z-18+
-40°C to +85°C
8 SO (0.150″)
DS1338-18
DS1338Z-3+
-40°C to +85°C
8 SO (0.150″)
DS1338-3
DS1338Z-33+
-40°C to +85°C
8 SO (0.150″)
DS133833
DS1338U-18+
-40°C to +85°C
8 SOP
1338
rr-18
DS1338U-3+
-40°C to +85°C
8 SOP
1338
rr-3
DS1338U-33+
-40°C to +85°C
8 SOP
1338
rr-33
DS1338C-18#
-40°C to +85°C
16 SO (0.300″)
DS1338C-18
DS1338C-3#
-40°C to +85°C
16 SO (0.300″)
DS1338C-3
DS1338C-33#
-40°C to +85°C
16 SO (0.300″)
DS1338C-33
rr = second line, revision level
+ Denotes a lead(Pb)-free/RoHS-compliant device.
# Denotes a RoHS-compliant device that may include lead that is
exempt under the RoHS requirements. The lead finish is JESD97
category e3, and is compatible with both lead-based and lead-free
soldering processes.
A “+” anywhere on the top mark denotes a lead-free device. A “#”
denotes a RoHS-compliant device.
Pin Configurations appear at end of data sheet.
DS1338
CPU
VCC
SDA
SCL
GND
X2
X1
VCC
RPU
CRYSTAL
SQW/OUT
VBAT
i
R
PU = tr/Cb
DS1338
I2C RTC with 56-Byte NV RAM
19-6019; Rev 3/12
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