Datasheet

t
START
START
SCLK
CS
RESET
t
RESET
t
RHSC
ADS1246
ADS1247
ADS1248
www.ti.com SBAS426G –AUGUST 2008–REVISED OCTOBER 2011
Figure 3. Minimum START Pulse Width
Timing Characteristics for Figure 3
At T
A
= -40°C to +105°C and DVDD = 2.7V to 5.5V.
SYMBOL DESCRIPTION MIN MAX UNIT
t
START
START pulse width high 3 t
OSC
Figure 4. Reset Pulse Width and SPI Communication After Reset
Timing Characteristics for Figure 4
At T
A
= -40°C to +105°C and DVDD = 2.7V to 5.5V.
SYMBOL DESCRIPTION MIN MAX UNIT
t
RESET
RESET pulse width low 4 t
OSC
t
RHSC
RESET high to SPI communication start 0.6
(1)
ms
(1) Applicable only when f
OSC
= 4.096MHz and scales proportionately with f
OSC
frequency.
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