Holtek BS82B12A-3 - Sensor Oscillator Electrical Characteristics

Rev. 1.20 20 January 23, 2015 Rev. 1.20 21 January 23, 2015
BS82B12A-3/BS82C16A-3/BS82D20A-3
Touch Key 8-Bit Flash MCU with LED/LCD Driver
BS82B12A-3/BS82C16A-3/BS82D20A-3
Touch Key 8-Bit Flash MCU with LED/LCD Driver
Sensor Oscillator Electrical Characteristics
Ta=25°C
Touch Key RC OSC = 500kHz
Symbol Parameter
Test Conditions
Min. Typ. Max. Unit
V
DD
Condition
I
KEYOSC
Only Sensor (KEY) Oscillator
Operating Current
3V
*f
SENOSC
=500kHz, MnFILEN=0
—
30 60
μA
5V — 60 120
3V
*f
SENOSC
=500kHz, MnFILEN=1
— 40 80
μA
5V — 80 160
I
REFOSC
Only Reference Oscillator
Operating Current
3V
*f
REFOSC
=500kHz,
MnTSS=0, MnFILEN=0
—
30 60
μA
5V — 60 120
3V
*f
REFOSC
=500kHz,
MnTSS=0, MnFILEN=1
—
30 60
μA
5V — 60 120
3V
*f
REFOSC
=500kHz,
MnTSS=1, MnFILEN=0
—
30 60
μA
5V — 60 120
3V
*f
REFOSC
=500kHz,
MnTSS=1, MnFILEN=1
— 40 80
μA
5V — 80 160
C
KEYOSC
Sensor (KEY) Oscillator
External Capacitance
5V *f
SENOSC
=500kHz 5 10 20 pF
C
REFOSC
Reference Oscillator Internal
Capacitance
5V *f
SENOSC
=500kHz 5 10 20 pF
f
KEYOSC
Sensor (KEY) Oscillator
Operating Frequency
5V
*External Capacitance
=7,8,9,10,11,12,13,14,15, … 50pF
100 500 1000 kHz
f
REFYOSC
Reference Oscillator
Operating Frequency
5V
*Internal Capacitance
=7,8,9,10,11,12,13,14,15, … 50pF
100 500 1000 kHz
Note:*f
SENOSC
=500kHz:adjusttheKEYncapacitortomaketheSensorOscillatorfrequency=500kHz.
*f
REFOSC
=500kHz:adjusttheReferenceOscillatorinternalcapacitortomaketheReferenceOscillator
frequency=500kHz.