HT16528-003 Просмотр технического описания (PDF) - Holtek Semiconductor
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HT16528-003 Datasheet PDF : 40 Pages
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Timing Condition for interface: M68, i80 and Serial Power On Reset
Symbol
Parameter
tRES
Resetting Time
ttrDD
VDD Rising Time
tOFF1
VDD OFF Width
tOFF2
VDD OFF Width
VDD
2.7V~5.5V
2.7V~5.5V
2.7V~5.5V
2.7V~5.5V
Min.
100
1
1
500
Typ.
¾
¾
¾
¾
V DD
0 .2 V
t trD D
tO F F 2
tR E S
4 .5 V
tO F F 1
In te rn a l
R eset
T im e
RESET Timing
Symbol
Parameter
tRSTD
Delay Time After Reset
tR
Reset Rising Time
tRST1
RST/Pulse Width Low
tRST2
RST/Pulse Width Low
VDD
2.7V~5.5V
2.7V~5.5V
2.7V~5.5V
2.7V~5.5V
Min.
100
1
1
500
Typ.
¾
¾
¾
¾
tR S T 2
RESET
0 .2 V
tR S T 1
R S ,S TB
4 .5 V
tR S T D
tR
HT16528
Max.
¾
¾
¾
¾
Ta=25°C
Unit
ms
ms
ms
ns
Max.
Unit
¾
ms
¾
ms
¾
ms
¾
ns
Power Supply Connection Sequence
· Connect the PGND and LGND externally to have an
equal potential voltage
V o lta g e
· To avoid faulty connection, turn on the driver power
supply (VH) after turning on the logic power supply
(VDD). Then turn off the logic power supply (VDD) after
VH
turning off the driver power supply (VH).
· If the power connection sequence recommended by
V DD
Holtek is not followed, there¢s a possibility that the in-
T im e
ternal logic transistors may be damaged.
Rev. 1.10
19
July 5, 2011
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