參數(shù)資料
型號(hào): DS1689S-TRL
廠商: Maxim Integrated Products
文件頁(yè)數(shù): 4/36頁(yè)
文件大小: 0K
描述: IC RTC SER W/NV RAM CTRL 28-SOIC
標(biāo)準(zhǔn)包裝: 1,000
類(lèi)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(lèi)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
12 of 36
Table 2. Periodic Interrupt Rate and Square-Wave Output Frequency
EXT. REG. B
SELECT BITS REGISTER A
E32K
RS3
RS2
RS1
RS0
tPI PERIODIC
INTERRUPT RATE
SQW OUTPUT
FREQUENCY
0
None
0
1
3.90625ms
256Hz
0
1
0
7.8125ms
128Hz
0
1
122.070
s
8.192kHz
0
1
0
244.141
s
4.096kHz
0
1
0
1
488.281
s
2.048kHz
0
1
0
976.5625
s
1.024kHz
0
1
1.953125ms
512Hz
0
1
0
3.90625ms
256Hz
0
1
0
1
7.8125ms
128Hz
0
1
0
1
0
15.625ms
64Hz
0
1
0
1
31.25ms
32Hz
0
1
0
62.5ms
16Hz
0
1
0
1
125ms
8Hz
0
1
0
250ms
4Hz
0
1
500ms
2Hz
1
X
(See Note)
32.768kHz
Note: RS3–RS0 determine periodic interrupt rates as listed for E32K = 0.
The third method uses a periodic interrupt to determine if an update cycle is in progress. The UIP bit in
Register A is set high between the setting of the PF bit in Register C (see Figure 3). Periodic interrupts
that occur at a rate of greater than tBUC allow valid time and date information to be reached at each
occurrence of the periodic interrupt. The reads should be complete within (tPI / 2 + tBUC) to ensure that
data is not read during the update cycle.
Figure 3. Update-Ended and Periodic Interrupt Relationship
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