品牌：MAX

批号：17+

数量:10000

封装:SOP-20

价格:面议

说明：全新原装现货，可出样品

IC特征： The DS3234 is a low-cost, extremely accurate SPI™ bus

real-time clock (RTC) with an integrated temperaturecompensated

crystal oscillator (TCXO) and crystal. The

DS3234 incorporates a precision, temperature-compensated

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 reset externally. The

device switches to the backup supply input and maintains

accurate timekeeping when main power to the

device is interrupted. The integration of the crystal resonator

enhances the long-term accuracy of the device

as well as reduces the piece-part count in a manufacturing

line. The DS3234 is available in commercial 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 connected

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 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. 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.

♦ 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 Laboratory (UL) Recognized

联系人:程小姐

手机:15919480276

电话:0755- 21015360 & 23038182

传真:0755-23038182

地址:深圳市福田区振华路海外装饰大厦综合大楼2栋B段4楼4014B-33C