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参数资料
| 型号： | RS5C372A-E2 |
| 厂商： | RICOH COMPANY LTD |
| 元件分类： | 时钟/数据恢复及定时提取 |
| 英文描述： | 0 TIMER(S), REAL TIME CLOCK, PDSO8 |
| 封装： | 0.65 MM PITCH, SSOP-8 |
| 文件页数： | 48/59页 |
| 文件大小： | 442K |
| 代理商： | RS5C372A-E2 |
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RS5C372A/B
48
Software Setting
(1) Use periodic interrupt immediately after power on to output ON (“L”) from the INTRB pin.
(2) When you want to turn power off use Alarm_B or periodic interrupt to set a timing for power on and output it
from the INTRB. The INTRB remains off (“H”) until the timing specified, high voltage is applied to the regulator
CE pin thus power for the micro controller is turned off.
(3) On reaching the specified timing, the INTRB pin switches to on (“L”) and power turns on. Hereafter, power is
turned off by setting 0 to the BALFG or the CTFG and turned on again at a next timing specified.
5.3 Example of Power Supply Wake-up Circuit (RS5C372A only)
The sample circuit below has been designed so that system power supply turns on at a time set in the Alarm_B
using the Alarm_B of the RS5C372A and the RN5RZ
××A (RN5RT××A)*1.
RN5RZ
××A or
RN5RT
××A
VDD VOUT
RS5C372A
CE
VDD
Microcontroller
32.768kHz or 32.000kHz
VDD
VSS
OSCIN
OSCOUT
SCL
SDA
INTRB
System power supply
Backup power supply
*
1
*
2
*
3
*
3
*
4
*1) The RN5RZ××A and the RN5RT××A are RICOH regulators with stand-by functions.
*2) The INTRB of the RS5C372A outputs 32-kHz clock pulses on power on. A capacitor is included so that CE will not change to “H” while 32-kHz clock
is off (“H”) to allow the regulator to be turned on.
*3) This resistor is used to prevent excess current from flowing into the pins of the RS5C372A/B and the RN5RZ××A (RN5RT××A) on power on.
*4) Pull-up resistors of the SCL and SDA are not shown in the figure for clarity.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| RS5C372B | 制造商:RICOH 制造商全称:RICOH electronics devices division 功能描述:I2C-bus Serial Interface Real Time Clock (8pin SSOP) |
| RS5C372B-E1 | 制造商:RICOH 制造商全称:RICOH electronics devices division 功能描述:I2C-bus Serial Interface Real Time Clock (8pin SSOP) |
| RS5C372B-E2 | 制造商:RICOH 制造商全称:RICOH electronics devices division 功能描述:I2C-bus Serial Interface Real Time Clock (8pin SSOP) |
| RS5C373A | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Real-Time Clock |
| RS5C4FC | 制造商:Dialight 功能描述: |
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