參數(shù)資料
型號(hào): S-35390A-J8T1G
元件分類: 時(shí)鐘/數(shù)據(jù)恢復(fù)及定時(shí)提取
英文描述: 1 TIMER(S), REAL TIME CLOCK, PDSO8
封裝: LEAD FREE, SOP-8
文件頁(yè)數(shù): 21/56頁(yè)
文件大小: 529K
代理商: S-35390A-J8T1G
2-WIRE REAL-TIME CLOCK
S-35390A
Rev.3.0_00
Seiko Instruments Inc.
28
3. How to confirm setting value for register and result of correction
The S-35390A does not adjust the frequency of the crystal oscillation by using the clock-correction function. Therefore
users cannot confirm if it is corrected or not by measuring output 32.768 kHz. When the function to clock-correction is
being used, the cycle of 1 Hz clock pulse output from the
1
INT
pin changes once in 20 times or 60 times, as shown in
Figure 31
.
INT1 pin
(1 Hz output)
a
b
B0 = 0, a : 19 times, b : Once
B0 = 1, a : 59 times, b : Once
19 times or 59 times
Once
Figure 31
Confirmation of Correction Result
Measure a and b by using the frequency counter
*1.
Calculate the average frequency (Tave) based on the
measurement results.
B0 = 0,
Tave = (a
× 19 + b) ÷ 20
B0 = 1,
Tave = (a
× 59 + b) ÷ 60
Calculate the error of the clock based on the average frequency (Tave).
The following shows an example for
confirmation.
Confirmation example: When B0 =0, 66h is set
Measurement results: a = 1.000080 Hz,
b = 0.998493 Hz
Clock Correction Register Setting Value
Average Frequency [Hz]
Per Day [s]
Before correction
00 h (Tave = a)
1.000080
86393
After correction
66 h (Tave = (a
× 19 + b) ÷ 20) 1.00000065
86399.9
Calculating the average frequency allows to confirm the result of correction.
*1.
Use a frequency counter with 7-digit or greater precision.
Caution
Measure the oscillation frequency under the usage conditions.
相關(guān)PDF資料
PDF描述
S-35390A-T8T1 REAL TIME CLOCK, PDSO8
S-35392A-I8T1U 1 TIMER(S), REAL TIME CLOCK, PDSO8
S-35399A03-J8T2U 1 TIMER(S), REAL TIME CLOCK, PDSO8
S-35399A03-J8T2G 1 TIMER(S), REAL TIME CLOCK, PDSO8
S-35L32AEFSG REAL TIME CLOCK, PDSO10
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
S-35390A-J8T1U 功能描述:IC RTC CLK/CALENDAR I2C 8SOP 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:I2C,2 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):14μA ~ 30μA @ 3V ~ 5V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:8-SOIC(0.154",3.90mm 寬) 供應(yīng)商器件封裝:8-SOP-J 標(biāo)準(zhǔn)包裝:1
S-35390A-T8T1 功能描述:實(shí)時(shí)時(shí)鐘 2-Wire 1.3-5.5V 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-35390A-T8T1G 功能描述:實(shí)時(shí)時(shí)鐘 2-Wire 1.3-5.5V 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-35390A-T8T1U 功能描述:IC RTC CLK/CALENDAR I2C 8TSSOP 制造商:ablic u.s.a. inc. 系列:- 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:I2C,2 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):14μA ~ 30μA @ 3V ~ 5V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:8-TSSOP(0.173",4.40mm 寬) 供應(yīng)商器件封裝:8-TSSOP 標(biāo)準(zhǔn)包裝:1
S-35391A-I8T1U 功能描述:IC RTC CLK/CALENDAR I2C 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:I2C,2 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):14μA ~ 30μA @ 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