Holtek BS66F340 - Power-On Reset Characteristics

Rev. 1.60 34 August 20, 2019 Rev. 1.60 35 August 20, 2019
BS66F340/BS66F350/BS66F360/BS66F370
Touch A/D Flash MCU with LED Driver
BS66F340/BS66F350/BS66F360/BS66F370
Touch A/D Flash MCU with LED Driver
Touch Key RC Oscillator 2000kHz Mode Selected
Symbol Parameter
Test Conditions
Min. Typ. Max. Unit
V
DD
Conditions
I
KEYOSC
Only Sensor (KEY) Oscillator
Operating Current
3V
*f
SENOSC
=2000kHz
— 80 160
µA
5V — 160 320
I
REFOSC
Only Reference Oscillator Operating
Current
3V
*f
REFOSC
=2000kHz, MnTSS=0
— 80 160
µA
5V — 160 320
3V
*f
REFOSC
=2000kHz, MnTSS=1
— 80 160
µA
5V — 160 320
C
KEYOSC
Sensor (KEY) Oscillator External
Capacitor
3V
*f
SENOSC
=2000kHz
4 8 20 pF
5V 5 10 20 pF
C
REFOSC
Reference Oscillator Internal
Capacitor
3V
*f
SENOSC
=2000kHz
4 8 20 pF
5V 5 10 20 pF
f
KEYOSC
Sensor (KEY) Oscillator Operating
Frequency
3V
* C
EXT
=3, 4, 5, 6, 7, 8, 9, … 50pF
150 2000 4000 kHz
5V 150 2000 4000 kHz
f
REFOSC
Reference Oscillator Operating
Frequency
3V
* C
EXT
=3, 4, 5, 6, 7, 8, 9, … 50pF
150 2000 4000 kHz
5V 150 2000 4000 kHz
Note: 1. f
SENOSC
=2000kHz: Adjust KEYn external capacitor to make sure that the Sensor oscillator frequency is
equal to 2000kHz.
2. f
REFOSC
=2000kHz: Adjust Reference oscillator internal capacitor to make sure that the reference oscillator
frequency is equal to 2000kHz.
Power-on Reset Characteristics
Ta=25°C
Symbol Parameter
Test Conditions
Min. Typ. Max. Unit
V
DD
Conditions
V
POR
V
DD
Start Voltage to Ensure Power-on Reset — — — — 100 mV
RR
POR
V
DD
Raising Rate to Ensure Power-on Reset — — 0.035 — — V/ms
t
POR
Minimum Time for V
DD
Stays at V
POR
to
Ensure Power-on Reset
— — 1 — — ms
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