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MAX6909EO33-T

更新时间： 2024-11-23 13:11:03
品牌 Logo 应用领域
美信 - MAXIM 控制器时钟
页数 文件大小 规格书
33页 775K
描述
Power Supply Management Circuit, Adjustable, 1 Channel, BICMOS, PDSO20, 0.150 INCH, 0.025 INCH PITCH, MO-137AD, QSOP-20

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MAX6909EO33-T 技术参数

是否Rohs认证：不符合生命周期：Obsolete
零件包装代码：SSOP包装说明：0.150 INCH, 0.025 INCH PITCH, MO-137AD, QSOP-20
针数：20Reach Compliance Code：not_compliant
ECCN代码：EAR99HTS代码：8542.39.00.01
风险等级：5.8Is Samacsys：N
可调阈值：YES模拟集成电路 - 其他类型：POWER SUPPLY MANAGEMENT CIRCUIT
JESD-30 代码：R-PDSO-G20JESD-609代码：e0
长度：8.65 mm湿度敏感等级：1
信道数量：1功能数量：1
端子数量：20最高工作温度：85 °C
最低工作温度：-40 °C封装主体材料：PLASTIC/EPOXY
封装代码：SSOP封装形状：RECTANGULAR
封装形式：SMALL OUTLINE, SHRINK PITCH峰值回流温度（摄氏度）：245
认证状态：Not Qualified座面最大高度：1.73 mm
最大供电电压 (Vsup)：3.6 V最小供电电压 (Vsup)：3 V
标称供电电压 (Vsup)：3.3 V表面贴装：YES
技术：BICMOS温度等级：INDUSTRIAL
端子面层：Tin/Lead (Sn/Pb)端子形式：GULL WING
端子节距：0.635 mm端子位置：DUAL
处于峰值回流温度下的最长时间：NOT SPECIFIED宽度：3.9 mm
Base Number Matches：1

MAX6909EO33-T 数据手册

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19-3322; Rev 0; 8/04  
2
I C-Compatible Real-Time Clocks with µP  
Supervisor and NV RAM Controller  
General Description  
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  
The MAX6909/MAX6910 are I2C-compatible real-time  
clocks (RTCs) with a microprocessor supervisor, option-  
al trickle charger (MAX6910 only), backup power  
source, and NV RAM controller. The MAX6909/  
MAX6910 provide alarm outputs to indicate a crystal fail-  
ure, a switchover to battery power, and time and date  
indication. The NV RAM is 31 bytes of static RAM that  
are available for scratchpad storage. The MAX6909/  
MAX6910 are controlled through a 2-wire serial bus.  
♦ 31 Bytes of RAM for Scratchpad Data Storage  
♦ Uses Standard 32.768kHz, 6pF Load, Watch  
Crystal  
♦ Programmable Time/Date, Open-Drain ALARM  
Output (Status Can also Be Polled)  
The real-time clock/calendar provides seconds, min-  
utes, hours, day, date, month, and year information.  
The date is automatically adjusted for months with  
fewer than 31 days, including corrections for leap year  
up to the year 2100. The clock operates in either the  
24-hour or 12-hour format with an AM/PM indicator. A  
time/date-programmable ALARM output completes the  
features list for the real-time clock section of the  
MAX6909/MAX6910. The alarm function can also be  
used in a polled mode by periodically reading the  
alarm out status bit in the minutes register. A crystal fail  
output, CX FAIL, indicates loss of accurate timekeeping  
due to crystal problems.  
♦ Chip Enable Gating (Control of CE with Reset and  
Power Valid)  
♦ OUT Pin for SRAM Power  
♦ µP Reset Output  
♦ Watchdog Input  
♦ Manual Reset Input with Push-Button Switch  
Debounce  
♦ Independent Power-Fail and Reset Comparators  
♦ 400kHz 2-Wire Interface  
♦ Single-Byte or Multiple-Byte (Burst Mode) Data  
Transfer for Read or Write of Clock Registers or  
RAM  
A built-in µP supervisor with an open-drain reset  
ensures the µP powers up in a known state. A reset  
threshold is available for 3V or 3.3V supplies. The piezo  
transducer output, PZT, is register selectable for one of  
four frequencies, can be turned on and off through a  
register bit, or selected to go on when the ALM, alarm  
output, goes active.  
♦ Bus Timeout to Prevent Lockup of Malfunctioning  
Bus Interface  
♦ Dual Power-Supply Pins for Primary and Backup  
Power  
♦ Programmable Trickle Charger (MAX6910)  
♦ Uses Less than 1µA Timekeeping Current at 3.0V  
♦ Operating Voltages of 3V and 3.3V  
The MAX6909/MAX6910 are available in a 20-pin QSOP  
package and operate over the -40°C to +85°C temper-  
ature range.  
Ordering Information  
Applications  
Point-of-Sale Equipment  
Programmable Logic Controller  
Handheld Instruments  
PART  
TEMP RANGE  
-40°C to +85°C  
-40°C to +85°C  
-40°C to +85°C  
-40°C to +85°C  
PIN-PACKAGE  
20 QSOP  
MAX6909EO30  
MAX6909EO33  
MAX6910EO30  
MAX6910EO33  
20 QSOP  
20 QSOP  
Medical Instrumentation  
20 QSOP  
Pin Configuration/Selector Guide/Typical Operating Circuit  
appear at end of data sheet.  
________________________________________________________________ Maxim Integrated Products  
1
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.  
1234567...33

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