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DS1307+ 数据手册 - Maxim Integrated（美信）
制造商:
Maxim Integrated（美信）
分类:
实时时钟芯片
封装:
DIP-8
描述:
MAXIM INTEGRATED PRODUCTS DS1307+.. 芯片, 实时时钟, 年-月-日, 56 X 8, DIP-8
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DS1307+数据手册
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AVAILABLE
Functional Diagrams
Pin Configurations appear at end of data sheet.
Functional Diagrams continued at end of data sheet.
UCSP is a trademark of Maxim Integrated Products, Inc.
For pricing, delivery, and
ordering information, please contact Maxim Direct
at 1-888-629-4642, or visit Maxim’s website at www.maximintegrated.com.
REV: 100208
GENERAL DESCRIPTION
The DS1307 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 I
2
C, bidirectional bus.
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 DS1307 has a
built-in power-sense circuit that detects power failures
and automatically switches to the backup supply.
Timekeeping operation continues while the part
operates from the backup supply.
TYPICAL OPERATING CIRCUIT
FEATURES
Real-Time Clock (RTC) Counts Seconds,
Minutes, Hours, Date of the Month, Month, Day of
the week, and Year with Leap-Year
Compensation Valid Up to 2100
56-Byte, Battery-Backed, General-Purpose RAM
with Unlimited Writes
I
2
C Serial Interface
Programmable Square-Wave Output Signal
Automatic Power-Fail Detect and Switch Circuitry
Consumes Less than 500nA in Battery-Backup
Mode with Oscillator Running
Optional Industrial Temperature Range:
-40°C to +85°C
Available in 8-Pin Plastic DIP or SO
Underwriters Laboratories (UL) Recognized
PIN CONFIGURATIONS
V
CC
SCL
SDA
X1
X2
V
BAT
GND
SQW/OUT
V
CC
SCL
SDA
X1
X2
V
BAT
GND
SQW/OUT
PDIP (300 mils)SO (150 mils)
TOP VIEW
ORDERING INFORMATION
PART TEMP RANGE VOLTAGE (V)
PIN-PACKAGE TOP MARK*
DS1307+
0°C to +70°C
5.0
8 PDIP (300 mils)
DS1307
DS1307N+
-40°C to +85°C 5.0 8 PDIP (300 mils) DS1307N
DS1307Z+
0°C to +70°C 5.0 8 SO (150 mils) DS1307
DS1307ZN+
-40°C to +85°C
5.0
8 SO (150 mils)
DS1307N
DS1307Z+T&R
0°C to +70°C
5.0
8 SO (150 mils) Tape and Reel
DS1307
DS1307ZN+T&R
-40°C to +85°C 5.0 8 SO (150 mils) Tape and Reel DS1307N
+Denotes a lead-free/RoHS-compliant package.
*A “+” anywhere on the top mark indicates a lead-free package. An “N” anywhere on the top mark indicates an industrial temperature range
device.
DS130
CPU
V
CC
V
CC
V
CC
SDA
SCL
GND
X2
X1
V
CC
R
PU
R
PU
CRYSTAL
SQW /OUT
V
BAT
R
PU
= t
r
/C
b
DS1307
64 x 8, Serial, I
2
C Real-
Time Clock
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