BD37A19F データシートの表示（PDF） - ROHM Semiconductor
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BD37A19F Datasheet PDF : 18 Pages
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BD37Axx Series BD87Axx Series BD99A41F
Datasheet
●Electrical Characteristics - Continued
(Unless otherwise specified, Ta = −40℃ to 105℃, VDD = 5V)
Parameter
Symbol
Min.
Limits
Typ.
RESET transmission
delay time: low high
TPLH
3.9
6.9
Delay circuit resistance
Rrst
5.8
10.0
Delay pin threshold voltage VCTH VDD×0.3 VDD×0.45
Delay pin output current
ICT
150
—
Min. operating voltage
VOPL
1.0
—
[WDT]
WDT monitor time
TwH
7.0
10.0
WDT reset time
TwL
2.4
3.3
Clock input pulse width
TWCLK
500
—
CLK high threshold voltage VCLKH VDD × 0.8
—
CLK low threshold voltage VCLKL
0
—
INH high threshold voltage VINHH VDD × 0.8
—
INH low threshold voltage VINHL
0
—
CTW charge current
ICTWC
0.25
0.50
CTW discharge current
ICTWO
0.75
*1 TPLH can be varied by changing the CT capacitance value.
TPLH (s) 0.69 × Rrst (MΩ) × CT (µF) Rrst = 10 MΩ (Typ.)
*2 TwH can be varied by changing the CTW capacitance value.
TwH (s) (0.5 × CTW (µF))/ICTWC (µA) ICTWC = 0.5 µA
*3 TwL can be varied by changing the CTW capacitance value.
TwL (s) (0.5 × CTW (µF))/ICTWO (µA) ICTWO = 1.5 µA
1.50
(Typ.)
(Typ.)
Max.
10.1
14.5
VDD×0.6
—
—
20.0
7.0
—
VDD
VDD × 0.3
VDD
VDD × 0.3
0.75
2.00
Unit
Conditions
ms
CT = 0.001µF *1
When VDD = VDET 0.5V
MΩ VCT = GND
V RL = 470KΩ
µA VDD = 1.50V, VCT = 0.5V
V VOL ≤ 0.4V, RL = 470KΩ
ms CTW = 0.01µF *2
ms CTW = 0.01µF *3
ns
V
V
V
V
µA VCTW = 0.2V
µA VCTW = 0.8V
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TSZ22111・15・001
4/15
TSZ02201-0T2T0AN00130-1-2
25.Apr.2013 Rev.002
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