參數資料
| 型號： | DS3234S# |
| 廠商： | Maxim Integrated Products |
| 文件頁數： | 1/21頁 |
| 文件大小： | 0K |
| 描述： | IC RTC W/TCXO 20-SOIC |
| 產品培訓模塊： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 標準包裝： | 45 |
| 類型： | 時鐘/日歷 |
| 特點： | 警報器，閏年，NVSRAM，方波輸出，TCXO/晶體 |
| 存儲容量： | 256B |
| 時間格式： | HH:MM:SS（12/24 小時） |
| 數據格式： | YY-MM-DD-dd |
| 接口： | SPI |
| 電源電壓： | 2 V ~ 5.5 V |
| 電壓 - 電源，電池： | 2 V ~ 3.8 V |
| 工作溫度： | 0°C ~ 70°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 20-SOIC（0.295"，7.50mm 寬） |
| 供應商設備封裝： | 20-SOIC W |
| 包裝： | 管件 |
| 產品目錄頁面： | 1434 (CN2011-ZH PDF) |
General Description
The DS3234 is a low-cost, extremely accurate SPI bus
real-time clock (RTC) with an integrated temperature-com-
pensated crystal oscillator (TCXO) and crystal. The
DS3234 incorporates a precision, temperature-compen-
sated voltage reference and comparator circuit to monitor
VCC. When VCC drops below the power-fail voltage (VPF),
the device asserts the RST output and also disables read
and write access to the part when VCC drops below both
VPF and VBAT. The RST pin is monitored as a pushbutton
input for generating a P reset. The device switches to the
backup supply input and maintains accurate timekeeping
when main power to the device is interrupted. The integra-
tion of the crystal resonator enhances the long-term accu-
racy of the device as well as reduces the piece-part count
in a manufacturing line. The DS3234 is available in com-
mercial and industrial temperature ranges, and is offered
in an industry-standard 300-mil, 20-pin SO package.
The DS3234 also integrates 256 bytes of battery-backed
SRAM. In the event of main power loss, the contents of
the memory are maintained by the power source con-
nected to the VBAT pin. The RTC maintains seconds,
minutes, hours, day, date, month, and year information.
The date at the end of the month is automatically adjust-
ed for months with fewer than 31 days, including correc-
tions for leap year. The clock operates in either the
24-hour or 12-hour format with AM/PM indicator. Two
programmable time-of-day alarms and a programmable
square-wave output are provided. Address and data are
transferred serially by an SPI bidirectional bus.
Applications
Servers
Utility Power Meters
Telematics
GPS
Features
Accuracy ±2ppm from 0°C to +40°C
Accuracy ±3.5ppm from -40°C to +85°C
Battery Backup Input for Continuous
Timekeeping
Operating Temperature Ranges
Commercial: 0°C to +70°C
Industrial: -40°C to +85°C
Low-Power Consumption
Real-Time Clock Counts Seconds, Minutes,
Hours, Day, Date, Month, and Year with Leap Year
Compensation Valid Up to 2099
Two Time-of-Day Alarms
Programmable Square-Wave Output
4MHz SPI Bus Supports Modes 1 and 3
Digital Temp Sensor Output: ±3°C Accuracy
Register for Aging Trim
RST Input/Output
300-Mil, 20-Pin SO Package
Underwriters Laboratories Recognized
DS3234
Extremely Accurate SPI Bus RTC with
Integrated Crystal and SRAM
______________________________________________
Maxim Integrated Products
1
19-5339; Rev 3; 7/10
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.
Ordering Information
PART
TEMP RANGE
PIN-
PACKAGE
TOP
MARK
DS3234S#
0°C to +70°C
20 SO
DS3234S
DS3234SN#
-40°C to +85°C
20 SO
DS3234SN
DS3234
CS
INT/SQW
32kHz
VBAT
PUSH-
BUTTON
RESET
SCLK
RST
N.C.
VCC
VPU
VCC
GND
VCC
μP
SS
SCLK
DIN
MOSI
DOUT
MISO
RST
N.C.
Typical Operating Circuit
#
Denotes a RoHS-compliant device that may include lead that
is exempt under the RoHS requirements. 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 RoHS-compliant device.
TOP VIEW
20
19
18
17
16
15
14
13
1
2
3
4
5
6
7
8
SCLK
DOUT
SCLK
DIN
VCC
32kHz
N.C.
CS
VBAT
GND
N.C.
RST
INT/SQW
12
11
9
10
N.C.
SO
DS3234
Pin Configuration
SPI is a trademark of Motorola, Inc.
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相關代理商/技術參數 |
參數描述 |
|---|---|
| DS3234S# | 功能描述:實時時鐘 Integrated RTC/TCXO/Crystal 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: 安裝風格:Through Hole 封裝 / 箱體:PDIP-8 封裝:Tube |
| DS3234S# | 制造商:Maxim Integrated Products 功能描述:RTC TCXO CRYSTAL 3.3V 20SOIC 制造商:Maxim Integrated Products 功能描述:RTC, TCXO, CRYSTAL, 3.3V, 20SOIC 制造商:Maxim Integrated Products 功能描述:RTC, TCXO, CRYSTAL, 3.3V, 20SOIC; Date Format:DD:MM:YYYY; Clock Format:HH:MM:SS; Clock IC Type:RTC; Supply Voltage Min:2V; Supply Voltage Max:5.5V; Digital IC Case Style:SOIC; No. of Pins:20; Interface Type:SPI; Operating Temperature;RoHS Compliant: Yes |
| DS3234S#T&R | 制造商:Maxim Integrated Products 功能描述:REAL TIME CLOCK SERL 256BYTE 20SOIC W - Tape and Reel 制造商:Maxim Integrated Products 功能描述:IC RTC W/TCXO 20-SOIC |
| DS3234S#T&R | 功能描述:實時時鐘 Integrated RTC/TCXO/Crystal 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: 安裝風格:Through Hole 封裝 / 箱體:PDIP-8 封裝:Tube |
| DS3234S+ | 功能描述:實時時鐘 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: 安裝風格:Through Hole 封裝 / 箱體:PDIP-8 封裝:Tube |
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