MC81F4204
April 24, 2012 Ver.1.41 33
7.9 LVR (Low Voltage Reset) Electrical Characteristics
(T
A
= - 40
°
C to + 85
°
C, V
DD
= 2.2 V to 5.5 V)
Parameter Symbol Conditions Min Typ Max Units
2.2 2.4 2.6
2.5 2.7 2.9
2.7 3.0 3.3
LVR voltage VLVR –
3.6 4.0 4.4
V
Hysteresis voltage of
LVR
△V
– – 10 100 mV
Current consumption ILVR VDD = 3V – 45 80 uA
NOTES:
1. The current of LVR circuit is consumed when LVR is enabled by “ROM Option”.
2. 2
16
/fx ( = 6.55 ms at fx = 10 MHz)
7.10 POR (Power on Reset) Electrical Characteristics
(T
A
= - 40
°
C to + 85
°
C, V
DD
= 2.2 V to 5.5 V)
Parameter Symbol Conditions Min Typ Max Units
POR voltage VPOR – 1.4 1.7 2.0 V
VDD Voltage Rising
Time
tR – 0.05 – 16.7 V/mS
Current consumption IPOR VDD = 3V – 45 80 uA