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參數(shù)資料
| 型號(hào)： | S-35180AT8T1 |
| 元件分類： | 時(shí)鐘/數(shù)據(jù)恢復(fù)及定時(shí)提取 |
| 英文描述： | REAL TIME CLOCK, PDSO8 |
| 封裝： | TSSOP-8 |
| 文件頁數(shù)： | 25/46頁 |
| 文件大?。?/td> | 498K |
| 代理商： | S-35180AT8T1 |
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3-WIRE REAL-TIME CLOCK
Rev.2.0_00
S-35180A
Seiko Instruments Inc.
31
2. Measurement of oscillation frequency
When the S-35180A is turned on, the internal power-on detector operates and a signal of 1 Hz is output
from the INT pin to select the crystal oscillator and optimize the Cg value. Turn the power on and measure
the signal with a frequency counter following the circuit configuration shown in Figure 37. A signal of 1 Hz
may not be output depending on the state in which power is applied, so set the selected frequency steady
interrupt using status register_2 and then set 1 Hz signal output using INT1 register_1 to generate a
normal output. For further details, refer to “Interrupts”.
Remark If the error range is
±1 ppm in relation to 1 Hz, the time is shifted by approximately 2.6
seconds per month (calculated using the following expression).
10
–6 (1 ppm) × 60 seconds × 60 minutes × 24 hours × 30 days = 2.592 seconds
S-35180A
Frequency
counter
VDD
XIN
XOUT
CS
INT
VSS
SIO
SCK
Cg
10
k
10
k
Open
10
k
Figure 37 Configuration of Oscillation Frequency Measurement Circuit
Caution 1. Use a high-accuracy frequency counter (1 ppm order).
2. Since the 1 Hz signal continues to be output, initialization must be executed during
normal operation.
3. Refer to the frequency slow/fast range characteristics for Cg.
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相關(guān)代理商/技術(shù)參數(shù) |
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| S3518286C1 | 制造商:Navistar 功能描述:Red Multiple Cable Seal |
| S-35190A | 制造商:SII 制造商全稱:Seiko Instruments Inc 功能描述:3-WIRE REAL-TIME CLOCK |
| S-35190A-I8T1G | 功能描述:實(shí)時(shí)時(shí)鐘 3-wire 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 |
| S-35190A-I8T1U | 功能描述:IC RTC CLK/CALENDAR SER SNT-8A 制造商:ablic u.s.a. inc. 系列:- 包裝:剪切帶（CT） 零件狀態(tài):在售 類型:時(shí)鐘/日歷 特性:警報(bào)器，閏年 存儲(chǔ)容量:- 時(shí)間格式:HH：MM：SS（12/24 小時(shí)） 日期格式:YY-MM-DD-dd 接口:3 線串口 電壓 - 電源:1.3 V ~ 5.5 V 電壓 - 電源，電池:- 電流 - 計(jì)時(shí)（最大）:0.93μA ~ 1.1μA @ 3V ~ 5V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:8-SMD，扁平引線 供應(yīng)商器件封裝:SNT-8A 標(biāo)準(zhǔn)包裝:1 |
| S-35190A-J8T1G | 功能描述:實(shí)時(shí)時(shí)鐘 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 |
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