Application Specified Reset IC

Part NameIo
(A)
Single/Multi
Function
Target
application
ActivityOutput
Format
Delay
Circuit
Delay
Time(ms)
Detection
Type
Detection
Voltage(V)
Reset
Level
Operating
Power-supply
voltage
Range(V)
Circuit
Current
(μA)
Function/FeatureOper. Temp.
(degC)
max.
Package
Type
RNA53A30FUS--Peripheral for PC & MCU, Digital ConsumerSystem Monitor, Power supplyCMOS/
Open
drain
External CR50ms or 100msSupply
voltage
(3.3V)
3.05Low reset type2.5 to 5.50.01•Reset detection voltage 3.05V±1%
•standard voltage 3.050V±0.8%
•Delay time 50, 100ms (fine regulation by resistance is possible)
•Corresponds to manual reset
•Sleep mode is installed
-40 to +85SSOP-8
RNA53A27FUS--Peripheral for PC & MCU, Digital ConsumerSystem Monitor, Power supplyCMOS/
Open
drain
External CR50ms or 100msSupply
voltage
(3.3V)
2.745Low reset type2.5 to 5.50.01•Reset detection voltage 2.745V±1%
•standard voltage 3.050V±0.8%
•Delay time 50, 100ms (fine regulation by resistance is possible)
•Corresponds to manual reset
•Sleep mode is installed
-40 to +85SSOP-8
RNA52A10T30MultiPeripheral for PC & MCU, Digital ConsumerSystem Monitor, Power supplyOpen
drain
Ch1 :
Ch2 : External CR
11
(CD=0.3μF,
RD=39kΩ)
Input voltage1Low reset type1.4 to 61.1• Low voltage detection(1.0V↑)
• Manual reset available(ch2)
-40 to +85TSSOP-8
RNA50C27A25-MCU with two VDD-CMOS/
Open
drain
External CR93
(Cext=0.1μF,
Rext=1MΩ)
Supply
voltage
(3.3V)
2.7Low reset type2.7 to 4.62• 3.3V/1.8V power supply control
• Delay time can be changed
• Reset out : CMOS or Open drain can be selected
-40 to +85MMPAK8
RNA52A10MM30MultiPeripheral for PC & MCU, Digital ConsumerSystem Monitor, Power supplyOpen
drain
Ch1 :
Ch2 : External CR
11
(CD=0.3μF,
RD=39kΩ)
Input voltage1Low reset type1.4 to 61.1• Low voltage detection(1.0V↑)
• Manual reset available(ch2)
-40 to +85MMPAK8

For microcomputers that generally have restrictions on the order in which multiple voltages are turned on, complex circuit design was needed for controlling the order of rise and fall between power supplies. The RNA50C27 for SH microcontrollers was created to simplify this. In addition, a reset IC containing two circuits, the RNA52A10, can use an external resistor to set detection voltage, which is something that could not be done with previous CMOS products. It can also combine with another IC to perform sequence control of three power supplies.