LC79451KB Datasheet, PDF (8/38 Pages) ON Semiconductor – Controller and Driver

LC79451KB
5-4. AC Timing Characteristics (I²C/SPI)
(Case without the special mention VDD = +2.5V, VSS = 0V, Ta = +25°C)
Parameter
Symbol
Condition
min
typ
max
Unit
Note
VDD - VDD2 setup time
tSU(1)
0
-
-
μs
VDD2 - RESET setup time
tSU(2)
10
-
-
ms
RESET pulse width
tPW(1)
5
-
-
μs
RESET - START condition
RESET - CS setup time
tSU(3)
1
-
-
μs
RESET - VHON setup time
RESET - START setup time
tSU(4)
HVON Flag hold time
tHD(1)
Automatic charge-pump
mode
Manual charge-pump
mode
10
Typ × 0.97
-
(*1)
Option
-
ms
(Typ × 1.03)+1
ms
*2
LE Flag hold time
tHD(2)
-
-
1
μs
*2
Note: *1. It is same as rising period of the charge-pump. (Period be set by control register 1)
*2. The Flag is canceled automatically.
1) Timing of main signals from power-up to the initialize operation
VDD ^(90%)
tSU(1)
VDD2 ^(90%)
RESET
tSU(2)
tPW(1)
SDA
(I²C)
or
CS
(SPI)
tSU(3)
HVON Flag
or
START Flag
tSU(4)
Fig.2. VDD, VDD2, RESET, SDA(I²C) /CS(SPI), HVON Flag/START Flag timing
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