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參數資料
| 型號： | R5109N481C-TR-FE |
| 廠商： | RICOH COMPANY LTD |
| 元件分類： | 電源管理 |
| 英文描述： | 1-CHANNEL POWER SUPPLY MANAGEMENT CKT, PDSO8 |
| 封裝： | HALOGEN FREE AND ROHS COMPLIANT, SSOP-8 |
| 文件頁數： | 1/40頁 |
| 文件大小： | 517K |
| 代理商： | R5109N481C-TR-FE |
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R510xx SERIES
Microprocessor Supervisory Circuit
NO.EA-210-100217
1
OUTLINE
The R510xx Series are CMOS-based microprocessor supervisory circuit, or high accuracy and ultra low
supply current voltage detector with built-in delay circuit and watchdog timer. When the supply voltage is down
across the threshold, or the watchdog timer does not detect the system clock from the microprocessor, the reset
output is generated.
The voltage detector circuit is used for the system reset, etc. The detector threshold is fixed internally, and the
accuracy is
±1.0%. The released delay time (Power-on Reset Delay) circuit is built-in, and output delay time is
adjustable with an external capacitor, and the accuracy is
±16%. When the supply voltage becomes higher
than the released voltage, the reset state will be maintained during the delay time. The output type of the reset
is selectable, Nch open-drain, or CMOS.
The time out period of the watchdog timer can be also set with an external capacitor, and the accuracy is
±33%.
There are 5 products by the difference of packages and the function of voltage detector and watchdog timer.
The packages of R5105N and R5106N are SOT-23-6. The packages of R5107G, R5108G and R5109G are
SSOP-8G.
FEATURES
Supply Current...................................................................... Typ. 11μA (R5109G: 11.5μA)
Operating Voltage Range ..................................................... 0.9V to 6.0V (R5108G: 1.5V to 6.0V)
< Voltage Detector Part >
Detector Threshold Range.................................................... Stepwise setting with a step of 0.1V in the
range of 1.5V to 5.5V
Detector Threshold Accuracy................................................ ±1.0%
Power-on Reset Delay Time accuracy ................................. ±16% (40°C ≤ Topt ≤ 105°C)
Power-on reset delay time of the voltage detector ............... Typ. 370ms with an external capacitor : 0.1μF
< Watchdog Timer Part >
Built-in a watchdog timer's time out period accuracy ........... ±33% (40°C ≤ Topt ≤ 105°C)
Timeout period for watchdog timer ....................................... Typ. 310ms with an external capacitor : 0.1μF
Reset timer for watchdog timer............................................. Typ. 34ms with an external capacitor : 0.1μF
Packages .............................................................................. SOT-23-6 (R5105N, R5106N)
SSOP-8G (R5107G, R5108G, R5109G)
) Accuracy to center value of (Min.+Max.)/2
APPLICATIONS
Supervisory circuit for equipment with using microprocessors.
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