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参数资料
| 型号： | DS1689SN |
| 厂商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分类： | Timer or RTC |
| 英文描述： | 1 TIMER(S), REAL TIME CLOCK, PDSO28 |
| 封装： | 0.330 INCH, SOIC-28 |
| 文件页数： | 23/36页 |
| 文件大小： | 594K |
| 代理商： | DS1689SN |
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DS1689/DS1693
3 of 36
PIN
SO
EDIP
NAME
FUNCTION
13
PWR
Active-Low Power-On Interrupt Output. The
PWR pin is intended
for use as an on/off control for the system power. With VCC voltage
removed from the DS1689/DS1693,
PWR may be automatically
activated from a kickstart input via the
KS pin or from a wake-up
interrupt. Once the system is powered on, the state of
PWR can be
controlled via bits in the Dallas registers.
14, 19
14
GND
Ground. DC power is provided to the device on this pin.
15
KS
Active-Low Kickstart Input. When VCC is removed from the
DS1689/DS1693, the system can be powered on in response to an
active low transition on the
KS pin, as might be generated from a
key closure. VBAUX must be present and auxiliary battery enable bit
(ABE) must be set to 1 if the kickstart function is used, and the
KS
pin must be pulled up to the VBAUX supply. While VCC is applied, the
KS pin can be used as an interrupt input.
16
CS
Active-Low Chip Select Input. This signal must be asserted low
during a bus cycle for the RTC portion of the DS1689/DS1693 to be
accessed.
CS must be kept in the active state during RD and WR
timing. Bus cycles, which take place with ALE asserted but without
asserting,
CS will latch addresses. However, no data transfer will
occur.
17
ALE
Address Strobe Input (Active High). A pulse on the address strobe
pin serves to demultiplex the bus. The falling edge of ALE causes
the RTC address to be latched within the DS1689/DS1693.
18
WR
Active-Low Write Data Strobe. The
WR signal is an active low
signal. The
WR signal defines the time period during which data is
written to the addressed register.
20
RD
Active-Low Read Data Strobe.
RD identifies the time period when
the DS1689/DS1693 drives the bus with RTC read data. The
RD
signal is an enable signal for the output buffers of the clock.
21
PSEL
+3V or +5V Power Select. When PSEL is logic 1, 5V operation is
selected. When PSEL is logic 0 or is floated, the device is in
autosense mode and determines the correct mode of operation based
on the voltage on VCCI.
22
IRQ
Active-Low Interrupt Request Output (Open Drain). The
IRQ pin is
an active-low output of the DS1689/DS1693 that can be tied to the
interrupt input of a processor. The
IRQ output remains low as long
as the status bit causing the interrupt is present and the
corresponding interrupt-enable bit is set. To clear the
IRQ pin, the
application software must clear all enabled flag bits contributing to
IRQ’s active state. When no interrupt conditions are present, the IRQ
level is in the high impedance state. Multiple interrupting devices
can be connected to an
IRQ bus. The IRQ pin is an open-drain
output and requires an external pullup resistor.
23
—
VBAT
Battery Input for Any Standard 3V Lithium Cell or Other Energy
Source. Battery voltage must be held between 2.5V and 3.7V for
proper operation.
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PDF描述 |
|---|---|
| DS1689S | 1 TIMER(S), REAL TIME CLOCK, PDSO28 |
| DS1693 | 1 TIMER(S), REAL TIME CLOCK, PDMA28 |
| DS1689 | 1 TIMER(S), REAL TIME CLOCK, PDIP28 |
| DS1720S+T&R | DIGITAL TEMP SENSOR-SERIAL, 9BIT(s), RECTANGULAR, SURFACE MOUNT |
| DS1720S+ | DIGITAL TEMP SENSOR-SERIAL, 9BIT(s), RECTANGULAR, SURFACE MOUNT |
相关代理商/技术参数 |
参数描述 |
|---|---|
| DS1689SN/R | 制造商:DALLAS 制造商全称:Dallas Semiconductor 功能描述:3V/5V Serialized Real-Time Clocks with NV RAM Control |
| DS1689SN/T | 制造商:DALLAS 制造商全称:Dallas Semiconductor 功能描述:3V/5V Serialized Real-Time Clocks with NV RAM Control |
| DS1689SN/T&R | 制造商:Maxim Integrated Products 功能描述:IC RTC SER NV RAM CTRL IN 28SOIC |
| DS1689SN/T&R | 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 |
| DS1689SN+ | 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 |
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