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參數(shù)資料
| 型號： | DS1374U-33 |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | 電源管理 |
| 英文描述： | I2C, 32-Bit Binary Counter Watchdog RTC with Trickle Charger and Reset Input/Output |
| 中文描述： | 1-CHANNEL POWER SUPPLY MANAGEMENT CKT, PDSO10 |
| 封裝： | 3 MM, MICRO, SOP-10 |
| 文件頁數(shù)： | 1/15頁 |
| 文件大?。?/td> | 616K |
| 代理商： | DS1374U-33 |
General Description
The DS1374 is a 32-bit binary counter designed to contin-
uously count time in seconds. An additional counter gen-
erates a periodic alarm or serves as a watchdog timer. If
disabled, this counter can be used as 3 bytes of non-
volatile (NV) RAM. Separate output pins are provided for
an interrupt and a square wave at one of four selectable
frequencies. A precision temperature-compensated refer-
ence and comparator circuit monitor the status of V
CC
to
detect power failures, provide a reset output, and auto-
matically switch to the backup supply when necessary.
Additionally, the reset pin is monitored as a pushbutton
input for externally generating a reset. The device is pro-
grammed serially through an I
2
C serial interface.
Applications
Portable Instruments
Point-of-Sale Equipment
Medical Equipment
Telecommunications
Features
32-Bit Binary Counter
Second Binary Counter Provides Time-of-Day
Alarm, Watchdog Timer, or NV RAM
Separate Square-Wave and Interrupt Output Pins
I
2
C Serial Interface
Automatic Power-Fail Detect and Switch Circuitry
Single-Pin Pushbutton Reset Input/Open-Drain
Reset Output
Low-Voltage Operation
Trickle-Charge Capability
-40°C to +85°C Operating Temperature Range
10-Pin μSOP, 16-Pin SO
Available in a Surface-Mount Package with an
Integrated Crystal (DS1374C)
Underwriters Laboratory (UL) Recognized
D
I
2
C, 32-Bit Binary Counter Watchdog RTC with
Trickle Charger and Reset Input/Output
______________________________________________
Maxim Integrated Products
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
1
Ordering Information
DS1374
X1
X2
CRYSTAL
V
CC
SQW
V
CC
SCL
SDA
INT
RST
INT
RST
GND
V
BACKUP
V
CC
V
CC
N.O.
PUSHBUTTON
RESET
PRIMARY
BATTERY,
RECHARGEABLE
BATTERY, OR
SUPER CAPACITOR
CPU
RPU
RPU = t
r
/C
B
RPU
Typical Operating Circuit
Rev 1; 9/04
PART
TEMP RANGE
PIN-
PACKAGE
TOP MARK
DS1374U-18
DS1374U-3
DS1374U-33
DS1374C-18
DS1374C-3
DS1374C-33
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
10 μSOP
10 μSOP
10 μSOP
16 SO, 0.300"
16 SO, 0.300"
16 SO, 0.300"
DS1374-18
DS1374-3
DS1374-33
DS1374C-18
DS1374C-3
DS1374C-33
I
2
C is a trademark of Philips Corp. Purchase of I
2
C compo-
nents of Maxim Integrated Products, Inc., or one of its subli-
censed Associated Companies, conveys a license under the
Philips I
2
C Patent Rights to use these components in an I
2
C
system, provided that the system conforms to the I
2
C Standard
Specification as defined by Philips.
Pin Configurations appear at the end of the data sheet.
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| DS1374 | I2C, 32-Bit Binary Counter Watchdog RTC with Trickle Charger and Reset Input/Output |
| DS1374U-18 | I2C, 32-Bit Binary Counter Watchdog RTC with Trickle Charger and Reset Input/Output |
| DS1374C-18 | I2C, 32-Bit Binary Counter Watchdog RTC with Trickle Charger and Reset Input/Output |
| DS1374C-3 | I2C, 32-Bit Binary Counter Watchdog RTC with Trickle Charger and Reset Input/Output |
| DS1374C-33 | I2C, 32-Bit Binary Counter Watchdog RTC with Trickle Charger and Reset Input/Output |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| DS1374U-33/T&R | 功能描述:實(shí)時(shí)時(shí)鐘 RoHS:否 制造商:Microchip Technology 功能:Clock, Calendar. Alarm RTC 總線接口:I2C 日期格式:DW:DM:M:Y 時(shí)間格式:HH:MM:SS RTC 存儲容量:64 B 電源電壓-最大:5.5 V 電源電壓-最小:1.8 V 最大工作溫度:+ 85 C 最小工作溫度: 安裝風(fēng)格:Through Hole 封裝 / 箱體:PDIP-8 封裝:Tube |
| DS1374U-33+ | 功能描述:實(shí)時(shí)時(shí)鐘 I2C 32-Bit Binary Counter Watchdog RoHS:否 制造商:Microchip Technology 功能:Clock, Calendar. Alarm RTC 總線接口:I2C 日期格式:DW:DM:M:Y 時(shí)間格式:HH:MM:SS RTC 存儲容量:64 B 電源電壓-最大:5.5 V 電源電壓-最小:1.8 V 最大工作溫度:+ 85 C 最小工作溫度: 安裝風(fēng)格:Through Hole 封裝 / 箱體:PDIP-8 封裝:Tube |
| DS1374U-33+T&R | 制造商:Maxim Integrated Products 功能描述:REAL TIME CLOCK SERL 10USOP - Tape and Reel 制造商:Maxim Integrated Products 功能描述:ELAPSED TIME COUNTER 3.3V TR LFREE 制造商:Maxim Integrated Products 功能描述:IC RTC I2C W/CHARGER 10-USOP 制造商:Maxim Integrated Products 功能描述:Real Time Clock I2C 32-Bit Binary Counter Watchdog |
| DS1374U-33+T&R | 功能描述:實(shí)時(shí)時(shí)鐘 I2C 32-Bit Binary Counter Watchdog RoHS:否 制造商:Microchip Technology 功能:Clock, Calendar. Alarm RTC 總線接口:I2C 日期格式:DW:DM:M:Y 時(shí)間格式:HH:MM:SS RTC 存儲容量:64 B 電源電壓-最大:5.5 V 電源電壓-最小:1.8 V 最大工作溫度:+ 85 C 最小工作溫度: 安裝風(fēng)格:Through Hole 封裝 / 箱體:PDIP-8 封裝:Tube |
| DS1375 | 制造商:DALLAS 制造商全稱:Dallas Semiconductor 功能描述:2-Wire Digital Input RTC with Alarm |
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