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BC48R2020 Datasheet(PDF) 11 Page - Holtek Semiconductor Inc |
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BC48R2020 Datasheet(HTML) 11 Page - Holtek Semiconductor Inc |
11 / 67 page Rev. 1.10 10 �a� 0�� �01� Rev. 1.10 11 �a� 0�� �01� BC48R2020 315/433MHz Remote RF TX 8-Bit OTP MCU BC48R2020 315/433MHz Remote RF TX 8-Bit OTP MCU A.C. Characteristics Ta=��°C Symbol Parameter Test Conditions Min. Typ. Max. Unit VDD Conditions fCPU Operating Clock — �.3V~3.6V 8 8 8 �Hz fHIRC HIRC OSC 3V/3.6V Ta=��°C -�% 8 +�% �Hz 3V/3.6V Ta=0~70°C -�% 8 +�% �Hz 3.0V~3.6V Ta=0~70°C -8% 8 +8% �Hz 3.0V~3.6V Ta=-�0~8�°C -1�% 8 +1�% �Hz fTI�ER Timer I/P Frequenc� (T�R) 3.3V~3.6V — 0 — 8 �Hz tWDTOSC Watchdog Oscillator Period 3V — �� 90 180 μs tRES External Reset Low Pulse Width — — 1 — — μs tSST S�stem Start-up Timer Period — wake-up from Halt — 16 — tSYS tLVR Low Voltage Width to Reset — — 0.�� 1 � ms tRSTD S�stem Reset Dela� Time (All Reset) — — �� �0 100 ms Note:1.tSYS=1/fSYS 2.TomaintaintheaccuracyoftheinternalHIRCoscillatorfrequency,a0.1μFdecouplingcapacitorshould beconnectedbetweenVDDandVSSandlocatedasclosetothedeviceaspossible. Power on Reset Characteristics Ta=��°C Symbol Parameter Test Conditions Min. Typ. Max. Unit VDD Conditions VPOR VDD Start Voltage to Ensure Power-on Reset — — — — 100 mV RRVDD VDD Raising Rate to Ensure Power-on Reset — — 0.03� — — V/ms tPOR �inimum Time for VDD Sta�s at VPOR to Ensure Power-on Reset — — 1 — — ms VDD tPOR RRVDD VPOR Time |
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