Holtek BS82B12A-3 - Power-On Reset Characteristics

Rev. 1.20 24 January 23, 2015 Rev. 1.20 25 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
Touch Key RC OSC =2000kHz
Symbol Parameter
Test Conditions
Min. Typ. Max. Unit
V
DD
Condition
I
KEYOSC
Only Sensor (KEY) Oscillator
Operating Current
3V
*f
SENOSC
=2000kHz, MnFILEN=0
— 80 160
μA
5V — 160 320
3V
*f
SENOSC
=2000kHz, MnFILEN=1
— 120 240
μA
5V — 200 400
I
REFOSC
Only Reference Oscillator
Operating Current
3V
*f
REFOSC
=2000kHz,
MnTSS=0, MnFILEN=0
— 80 160
μA
5V — 160 320
3V
*f
REFOSC
=2000kHz,
MnTSS=0, MnFILEN=1
— 80 160
μA
5V — 160 320
3V
*f
REFOSC
=2000kHz,
MnTSS=1, MnFILEN=0
— 80 160
μA
5V — 160 320
3V
*f
REFOSC
=2000kHz,
MnTSS=1, MnFILEN=1
— 120 240
μA
5V — 300 600
C
KEYOSC
Sensor (KEY) Oscillator
External Capacitance
3V
*f
SENOSC
=2000kHz
4 8 16
pF
5V 5 10 20
C
REFOSC
Reference Oscillator Internal
Capacitance
3V
*f
SENOSC
=2000kHz
4 8 16
pF
5V 5 10 20
f
KEYOSC
Sensor (KEY) Oscillator
Operating Frequency
3V
*
External Capacitance
=1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,
… 50pF
150 2000 4000
kHz
5V 150 2000 4000
f
REFYOSC
Reference Oscillator
Operating Frequency
3V
*
Internal Capacitance
=1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,
… 50pF
150 2000 4000
kHz
5V 150 2000 4000
Note:*f
SENOSC
=2000kHz:adjusttheKEYncapacitortomaketheSensorOscillatorfrequency=2000kHz.
*f
REFOSC
=2000kHz:adjusttheReferenceOscillatorinternalcapacitortomaketheReferenceOscillator
frequency=2000kHz
Power-on Reset Characteristics
Symbol Parameter
Test Conditions
Min. Typ. Max. Unit
V
DD
Conditions
V
POR
V
DD
Start Voltage to eEnsure Power-on Reset — — — — 100 mV
RR
VDD
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








