參數(shù)資料
型號(hào)： DS1689S-TRL
廠商： Maxim Integrated Products
文件頁(yè)數(shù)： 31/36頁(yè)
文件大?。?/td> 0K
描述： IC RTC SER W/NV RAM CTRL 28-SOIC
標(biāo)準(zhǔn)包裝： 1,000
類型： 時(shí)鐘/日歷
特點(diǎn)： NVSRAM
存儲(chǔ)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
DS1689/DS1693
4 of 36
PIN
SO
EDIP
NAME
FUNCTION
24
SQW
Square-Wave Output. The SQW pin can output a signal from one of
13 taps provided by the 15 internal divider stages of the real time
clock. The frequency of the SQW pin can be changed by
programming Register A as shown in Table 2. The SQW signal can
be turned on and off using the SQWE bit in Register B. A 32kHz
SQW signal is output when SQWE = 1, the Enable 32kHz (E32K)
bit in extended register 04BH is logic 1, and VCC is above VPF. A
32kHz square wave is also available when VCC is less than VPF if
E32K = 1, ABE = 1, and voltage is applied to VBAUX.
25
VCCO
External SRAM Power-Supply Output. This pin is internally
connected to VCCI when VCCI is within nominal limits. However,
during power fail, VCCO is internally connected to the VBAT or VBAUX
(whichever is larger). For 5V operation, switchover from VCCI to the
backup supply occurs when VCCI drops below the larger of VBAT and
VBAUX. For 3V operation, switchover from VCCI to the backup supply
occurs at VPF if VPF is less than VBAT and VBAUX. If VPF is greater
than VBAT and VBAUX, the switch from VCCI to the backup supply
occurs when VCCI drops below the larger of VBAT and VBAUX.
26
VCCI
+3V or +5V Main Supply. DC power is provided to the device on
these pins. 5V operation is selected when the PSEL pin is at logic 1.
If PSEL is floated or at logic 0, the device is in autosense mode and
determines the correct operating voltage based on the VCCI voltage
level.
27
CEO
Active-Low RAM Chip Enable Output. When power is valid,
CEO
will equal
CEI. When power is not valid, CEO will be driven high
regardless of
CEI.
28
CEI
Active-Low RAM Chip Enable Input.
CEI should be driven low to
enable the external RAM.
—
2, 3,
19, 23
N.C.
No Connection
相關(guān)PDF資料
PDF描述
MCP42100T-I/ST IC POT DGTL 100K 2CH SPI 14TSSOP
VI-B1D-MV CONVERTER MOD DC/DC 85V 150W
DS17285S-5/T&R IC RTC 5V 2K NV RAM 24-SOIC
VI-B1B-MV CONVERTER MOD DC/DC 95V 150W
MCP42100T-I/SL IC POT DGTL 100K 2CH SPI 14-SOIC
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
DS1691 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(chǔ)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
DS1691 WAF 制造商:Texas Instruments 功能描述:
DS1691/1692 WAF 制造商:Texas Instruments 功能描述:
DS1691A 制造商:NSC 制造商全稱:National Semiconductor 功能描述:(RS-422/RS-423) Line Drivers with TRI-STATE Outputs
DS1691AJ/883 制造商:NSC 制造商全稱:National Semiconductor 功能描述:(RS-422/RS-423) Line Drivers with TRI-STATE Outputs
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。

采購(gòu)需求

(若只采購(gòu)一條型號(hào)，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購(gòu)

我的聯(lián)系方式

*
*
*