MB3773
8
■ ELECTORICAL CHARACTERISTICS
(1) DC Characteristics
(
VCC = 5 V, Ta = + 25 °C)
Parameter Symbol Condition
Value
Unit
Min Typ Max
Supply current I
CC Watch-dog timer operating 600 900 µA
Detection voltage
V
SL
VCC 4.10 4.20 4.30
V
Ta = − 40 °C to
+ 85 °C 4.05 4.20 4.35
V
SH
VCC 4.20 4.30 4.40
Ta = − 40 °C to
+ 85 °C 4.15 4.30 4.45
Hysteresis width V
HYS VCC 50 100 150 mV
Reference voltage V
REF
1.227 1.245 1.263
V
Ta = − 40 °C to
+ 85 °C 1.215 1.245 1.275
Reference voltage change rate ∆V
REF1 VCC = 3.5 V to 16 V 310mV
Reference voltage output
loading change rate
∆V
REF2 IOUT = − 200 µA to + 5 µA − 5 + 5mV
CK threshold voltage V
TH Ta = − 40 °C to + 85 °C 0.8 1.25 2.0 V
CK input current
I
IH VCK = 5.0 V 01.0
µA
I
IL VCK = 0.0 V − 1.0 − 0.1
C
T discharge current ICTD
Watch-dog timer operating
V
CT = 1.0 V
71014µA
High level output voltage
V
OH1 VS open, IRESET = − 5 µA4.54.9
V
V
OH2 VS = 0 V, IRESET = − 5 µA4.54.9
Output saturation voltage
V
OL1 VS = 0 V, IRESET = 3 mA 0.2 0.4
V
V
OL2 VS = 0 V, IRESET = 10 mA 0.3 0.5
V
OL3 VS open, IRESET = 3 mA 0.2 0.4
V
OL4 VS open, IRESET = 10 mA 0.3 0.5
Output sink current
I
OL1 VS = 0 V, VRESET = 1.0 V 20 60
mA
I
OL2 VS open, VRESET = 1.0 V 20 60
C
T charge current ICTU
Power on reset operating
V
CT = 1.0 V
0.5 1.2 2.5 µA
Min supply voltage for RESET
VCCL1
VRESET = 0.4 V,
I
RESET = 0.2 mA
0.8 1.2 V
Min supply voltage for RESET V
CCL2
VRESET = VCC − 0.1 V,
R
L (between pin 2 and GND) =
1 MΩ
0.8 1.2 V
