LC79451KB datasheet(8/38 Pages) ONSEMI

8 / 38 page

LC79451KB

No.A2223-8/38

5-4. AC Timing Characteristics (I

2C/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)

μs

VDD2 - RESET setup time

tSU(2)

RESET pulse width

tPW(1)

μs

RESET - START condition

RESET - CS setup time

tSU(3)

μs

RESET - VHON setup time

RESET - START setup time

tSU(4)

Automatic charge-pump

mode

Typ

× 0.97

(*1)

(Typ

× 1.03)+1

HVON Flag hold time

tHD(1)

Manual charge-pump

mode

Option

LE Flag hold time

tHD(2)

μs

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

Fig.2. VDD, VDD2, RESET, SDA(I

2C) /CS(SPI), HVON Flag/START Flag timing

tSU(2)

VDD

tPW(1)

RESET

(90%)

VDD2

(90%)

tSU(3)

(SPI)

SDA

2C) or

tSU(4)

tSU(1)

HVON Flag

START Flag

LC79451KB Datenblatt(PDF) 8 Page - ON Semiconductor

LC79451KB Datenblatt(HTML) 8 Page - ON Semiconductor

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38

Datenblatt Download

Link URL