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参数资料
| 型号： | MAX6917EO33 |
| 厂商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分类： | 时钟/数据恢复及定时提取 |
| 英文描述： | REAL TIME CLOCK, PDSO20 |
| 封装： | 0.150 INCH, 0.025 INCH PITCH, MO-137AD, QSOP-20 |
| 文件页数： | 2/31页 |
| 文件大小： | 349K |
| 代理商： | MAX6917EO33 |
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MAX6917
I2C-Compatible RTC with Microprocessor
Supervisor, Alarm, and NV RAM Controller
10
______________________________________________________________________________________
Pin Description
PIN
NAME
FUNCTION
1VOUT
Supply Output for External SRAM or Other ICs Requiring Use of Backup-Battery Power. When VCC rises
above the reset threshold or above VBATT, VOUT is connected to VCC. When VCC falls below VRESET and
VBATT, VBATT is connected to VOUT. Connect a 0.1F low-leakage bypass capacitor from VOUT to GND.
Leave open if not used.
2
TEST
External Battery Test. Active high for 1s during each battery test. Intended to drive an external MOSFET
or bipolar transistor for an external battery-test configuration. External test must be selected in the control
register to use TEST; otherwise, it remains low. Leave open if not used.
3
TRIP
External Trip Set. If a different battery-low threshold is desired other than the internal POR default of
VBTP, then connect RSET+ between VBATT and TRIP and RSET- between TRIP and the drain or collector of
an external transistor whose base or gate is connected to TEST; Figure 17 (see the Battery Test section).
External test must be selected in the control register to use TRIP. Leave open if not used.
4
BATT_ON
Open-Drain Battery-On Indicator. BATT_ON is active low when the MAX6917 is powered from VBATT.
5
CE_IN
Chip-Enable Input. The input to the chip-enable gating circuitry. Connect CE_IN to GND if unused.
6
MR
Manual-Reset Input. A logic low on MR asserts RESET. RESET remains asserted as long as MR is low
and for tRP after MR returns high. The active-low MR input has an internal pullup resistor. MR can be
driven from a TTL or CMOS-logic line or shorted to ground with a switch. Internal debouncing circuitry
ensures noise immunity. Leave MR open if unused.
7
WDI
Watchdog Input. If WDI remains either high or low for longer than the watchdog timeout period, the
internal watchdog timer runs out and RESET is asserted. The internal watchdog timer clears while RESET
is asserted or when WDI sees a rising or falling edge. The watchdog function can be disabled from the
control register. The timeout period is configurable in the control register for 200ms or 1.6s.
8
GND
Ground
9
X1
32.768kHz Crystal-Oscillator Input
10
X2
32.768kHz Crystal-Oscillator Output
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX6917EO33+ | 功能描述:实时时钟 Integrated Circuits (ICs) RoHS:否 制造商:Microchip Technology 功能:Clock, Calendar. Alarm RTC 总线接口:I2C 日期格式:DW:DM:M:Y 时间格式:HH:MM:SS RTC 存储容量:64 B 电源电压-最大:5.5 V 电源电压-最小:1.8 V 最大工作温度:+ 85 C 最小工作温度: 安装风格:Through Hole 封装 / 箱体:PDIP-8 封装:Tube |
| MAX6917EO33+T | 功能描述:实时时钟 Integrated Circuits (ICs) RoHS:否 制造商:Microchip Technology 功能:Clock, Calendar. Alarm RTC 总线接口:I2C 日期格式:DW:DM:M:Y 时间格式:HH:MM:SS RTC 存储容量:64 B 电源电压-最大:5.5 V 电源电压-最小:1.8 V 最大工作温度:+ 85 C 最小工作温度: 安装风格:Through Hole 封装 / 箱体:PDIP-8 封装:Tube |
| MAX6917EO50 | 功能描述:实时时钟 RoHS:否 制造商:Microchip Technology 功能:Clock, Calendar. Alarm RTC 总线接口:I2C 日期格式:DW:DM:M:Y 时间格式:HH:MM:SS RTC 存储容量:64 B 电源电压-最大:5.5 V 电源电压-最小:1.8 V 最大工作温度:+ 85 C 最小工作温度: 安装风格:Through Hole 封装 / 箱体:PDIP-8 封装:Tube |
| MAX6917EO50+ | 功能描述:实时时钟 RoHS:否 制造商:Microchip Technology 功能:Clock, Calendar. Alarm RTC 总线接口:I2C 日期格式:DW:DM:M:Y 时间格式:HH:MM:SS RTC 存储容量:64 B 电源电压-最大:5.5 V 电源电压-最小:1.8 V 最大工作温度:+ 85 C 最小工作温度: 安装风格:Through Hole 封装 / 箱体:PDIP-8 封装:Tube |
| MAX6917EO50+T | 功能描述:实时时钟 Integrated Circuits (ICs) RoHS:否 制造商:Microchip Technology 功能:Clock, Calendar. Alarm RTC 总线接口:I2C 日期格式:DW:DM:M:Y 时间格式:HH:MM:SS RTC 存储容量:64 B 电源电压-最大:5.5 V 电源电压-最小:1.8 V 最大工作温度:+ 85 C 最小工作温度: 安装风格:Through Hole 封装 / 箱体:PDIP-8 封装:Tube |
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