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MAX6917EO30+ PDF预览

MAX6917EO30+

更新时间： 2024-11-06 21:08:27
品牌 Logo 应用领域
美信 - MAXIM 时钟光电二极管外围集成电路
页数 文件大小 规格书
31页 313K
描述
Real Time Clock, Non-Volatile, CMOS, PDSO20, 0.150 INCH, 0.025 INCH PITCH, LEAD FREE, MO-137AD, QSOP-20

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MAX6917EO30+ 技术参数

是否无铅： 不含铅是否Rohs认证： 符合
生命周期：Obsolete零件包装代码：SSOP
包装说明：SSOP, SSOP20,.25针数：20
Reach Compliance Code：compliantECCN代码：EAR99
HTS代码：8473.30.11.80风险等级：5.76
最大时钟频率：0.032 MHz信息访问方法：I2C
中断能力：YJESD-30 代码：R-PDSO-G20
JESD-609代码：e3长度：8.65 mm
湿度敏感等级：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
封装等效代码：SSOP20,.25封装形状：RECTANGULAR
封装形式：SMALL OUTLINE, SHRINK PITCH峰值回流温度（摄氏度）：260
电源：3 V认证状态：Not Qualified
座面最大高度：1.73 mm子类别：Timer or RTC
最大供电电压：3.3 V最小供电电压：2.7 V
标称供电电压：3 V表面贴装：YES
技术：CMOS温度等级：INDUSTRIAL
端子面层：Matte Tin (Sn)端子形式：GULL WING
端子节距：0.635 mm端子位置：DUAL
最短时间：SECONDS处于峰值回流温度下的最长时间：NOT SPECIFIED
易失性：NO宽度：3.9 mm
uPs/uCs/外围集成电路类型：TIMER, REAL TIME CLOCKBase Number Matches：1

MAX6917EO30+ 数据手册

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19-3702; Rev 1; 10/05  
2
I C-Compatible RTC with Microprocessor  
Supervisor, Alarm, and NV RAM Controller  
General Description  
Features  
The MAX6917 provides all the features of a real-time  
clock (RTC) plus a microprocessor (µP) supervisory cir-  
cuit, NV RAM controller, and backup-battery monitor  
function. In addition, 96 x 8 bits of static RAM are avail-  
able for scratchpad storage. The MAX6917 communi-  
♦ Real-Time Clock Counts  
Seconds, Minutes, Hours, Date,  
Month, Day of Week, and Year  
with Leap-Year Compensation Through 2099  
2
2
cates with a µP through an I C-bus-compatible serial  
♦ Fast (400kHz) I C-Bus-Compatible Interface  
interface.  
♦ 96 x 8 Bits of RAM for Scratchpad Data Storage  
The real-time clock/calendar provides seconds, min-  
utes, 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 years through 2099. The clock operates in  
either 24hr or 12hr format with an AM/PM indicator. A  
time/date-programmable alarm function is provided  
with an open-drain, active-low alarm output.  
♦ Uses Standard 32.768kHz, 6pF Load, Watch  
Crystal  
♦ Single-Byte or Multiple-Byte (Burst Mode) Data  
Transfer for Read or Write of Clock Registers or  
RAM  
♦ Battery Monitor and Low-Battery Warning Output  
Internal Default for Lithium Backup-Battery  
Testing  
The µP supervisory circuit features an open-drain,  
active-low reset available in three different reset thresh-  
olds. A manual reset input and a watchdog function are  
included as well.  
Pins Available for Other Backup-Battery  
Testing Configurations  
The NV RAM controller provides power for external SRAM  
from a backup battery plus chip-enable gating. The back-  
up battery also provides data retention of the on-board 96  
x 8 bits of RAM. An open-drain, active-low, battery-on sig-  
nal alerts the system when operating from a battery.  
♦ Dual Power-Supply Pins for Primary and Backup  
Power  
♦ Battery-On Output  
♦ NV RAM Controller  
The battery-test circuitry periodically tests the backup  
battery for a low-battery condition. An optional external  
resistor network selects different battery thresholds. A  
Chip-Enable Gating (Control of CE with Reset  
and Power Valid)  
VOUT for SRAM Power  
freshness seal prevents battery drain until the first V  
power-up.  
CC  
♦ Microprocessor Supervisor with Watchdog Input  
♦ Programmable Time/Date Alarm Output  
The MAX6917 has a crystal-fail-detect circuit and a  
data-valid bit. The MAX6917 is available in a 20-pin  
QSOP package and is guaranteed to operate over the  
extended (-40°C to +85°C) temperature range.  
♦ Data Valid Bit (Loss of All Voltage Alerts User of  
Corrupt Data)  
♦ Crystal-Fail Detect  
Applications  
♦ Reference Output Frequencies—1Hz and  
Point-of-Sale Equipment  
Programmable Logic Controllers  
Intelligent Instruments  
Fax Machines  
32.768kHz  
♦ Small, 20-Pin, QSOP Surface-Mount Package  
Digital Thermostats  
Ordering Information  
Industrial Control  
PIN-  
PACKAGE  
PKG  
CODE  
PART  
TEMP RANGE  
Pin Configuration and Selector Guide appear at end of data  
sheet.  
MAX6917EO30+  
MAX6917EO33+  
MAX6917EO50+  
-40°C to +85°C 20 QSOP  
-40°C to +85°C 20 QSOP  
-40°C to +85°C 20 QSOP  
E20-2  
E20-2  
E20-2  
+Denotes lead-free package.  
________________________________________________________________ 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...31

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