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參數(shù)資料
| 型號： | DS1689S |
| 廠商： | Maxim Integrated Products |
| 文件頁數(shù)： | 23/36頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC RTC SER W/NV RAM CTRL 28-SOIC |
| 標(biāo)準(zhǔn)包裝： | 26 |
| 類型： | 時(shí)鐘/日歷 |
| 特點(diǎn)： | NVSRAM |
| 存儲容量： | 114B |
| 時(shí)間格式： | HH:MM:SS（12/24 小時(shí)） |
| 數(shù)據(jù)格式： | YY-MM-DD-dd |
| 接口： | 并聯(lián) |
| 電源電壓： | 2.7 V ~ 3.3 V，4.5 V ~ 5.5 V |
| 電壓 - 電源，電池： | 2.5 V ~ 3.7 V |
| 工作溫度： | 0°C ~ 70°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 28-SOIC（0.295"，7.50mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 28-SOIC |
| 包裝： | 管件 |
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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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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| DS1689S/R | 制造商:DALLAS 制造商全稱:Dallas Semiconductor 功能描述:3V/5V Serialized Real-Time Clocks with NV RAM Control |
| DS1689S/T | 制造商:DALLAS 制造商全稱:Dallas Semiconductor 功能描述:3V/5V Serialized Real-Time Clocks with NV RAM Control |
| DS1689S/T&R | 制造商:Rochester Electronics LLC 功能描述: |
| DS1689S/T&R | 功能描述:實(shí)時(shí)時(shí)鐘 RoHS:否 制造商:Microchip Technology 功能:Clock, Calendar. Alarm RTC 總線接口:I2C 日期格式:DW:DM:M:Y 時(shí)間格式:HH:MM:SS RTC 存儲容量:64 B 電源電壓-最大:5.5 V 電源電壓-最小:1.8 V 最大工作溫度:+ 85 C 最小工作溫度: 安裝風(fēng)格:Through Hole 封裝 / 箱體:PDIP-8 封裝:Tube |
| DS1689S/T&R/ | 功能描述:實(shí)時(shí)時(shí)鐘 RoHS:否 制造商:Microchip Technology 功能:Clock, Calendar. Alarm RTC 總線接口:I2C 日期格式:DW:DM:M:Y 時(shí)間格式:HH:MM:SS RTC 存儲容量:64 B 電源電壓-最大:5.5 V 電源電壓-最小:1.8 V 最大工作溫度:+ 85 C 最小工作溫度: 安裝風(fēng)格:Through Hole 封裝 / 箱體:PDIP-8 封裝:Tube |
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