Fujitsu MB3773 User Manual download pdf (Page 8)

MB3773

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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 VHYS 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 ∆VREF1 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

IIH 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

VOH2 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

VOL3 VS

open, IRESET = 3 mA  0.2 0.4

VOL4 VS

open, IRESET = 10 mA  0.3 0.5

Output sink current

I

OL1 VS = 0 V, VRESET = 1.0 V 20 60 

mA

IOL2 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 (pin 2 − GND) = 1 MΩ

 0.8 1.2 V

1 2 3 4 5 6 7 8 9 10 11 12 13 ... 28 29

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