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參數(shù)資料
| 型號： | S-3531AECA-TB-01 |
| 元件分類： | 時鐘/數(shù)據(jù)恢復(fù)及定時提取 |
| 英文描述： | REAL TIME CLOCK, UUC8 |
| 封裝： | DIE-8 |
| 文件頁數(shù)： | 5/29頁 |
| 文件大?。?/td> | 236K |
| 代理商： | S-3531AECA-TB-01 |
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REAL-TIME CLOCK
S-3531A
12
Seiko Instruments Inc.
32 kHz
Example
If f15 to f0 = 000A H
16 kHz
8 kHz
4 kHz
2 kHz
INT1 pin output
Set to selected frequency steady
interrupt output
Figure 13 Clock output
2-4. Test flag
The test flag is a one-bit register which is assigned to MSB of the second data of the real-time
data register. If transferred data is considered as the test mode starting command due to the
receiving of the test mode starting command or noises, "1" is set. When "1" is set, you must send
the test mode ending command or reset command.
3.
Initialization
Note that S-3531A has different initializing operations, depending on states.
3-1. When power is turned on
When power is turned on, the status register is set to "82h" and the INT1 register to "8000h" by the
power-on detecting circuit. In other words, "1" is sets at the bit 7 (POWER flag) of the status
register and the clock of 1 Hz is output from the INT1 pin. This is provided to adjust oscillating
frequencies. In normal use, the reset command must be sent when power is turned on.
Real-time data register : 00 (year), 01 (month), 01 (day), 0 (day of week), 00 (hour), 00
(minute), 00 (second)
Status register
: "82h"
INT1 register : "8000h"
3-2. When the power voltage detecting circuits operates
The power voltage detecting circuit included in S-3531A operates and sets "1" at the bit 7
(POWER flag) of the internal status register when power is turned on or power voltage is reduced.
Once "1" is set, it is held even after the power voltage gets equal to or higher than the
detection voltage, i.e., power voltage detector threshold. When the flag has "1", you must send
the reset command from CPU and initialize the flag At this point, other registers does not change.
However, if the POWER flag has "0" during the power-on reset of CPU (S-3531A does not reach
any indefinite area during backup), you do not have to send the reset command.
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| S3534BR-L006-030-E69 | 制造商:Bonitron 功能描述:UNDERVOLTAGE RIDE-THRU PRODUCT |
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| S3536 | 制造商:MERKLE-KORFF INDUSTRIES 功能描述:S3536 |
| S-35380A0-J8T1 | 功能描述:實時時鐘 2-Wire 1.1-5.5V 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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