XRA1403 Datasheet, PDF (12/16 Pages) Exar Corporation – 16-BIT SPI GPIO EXPANDER WITH RESET INPUT

XRA1403
16-BIT SPI GPIO EXPANDER WITH RESET INPUT
REV. 1.0.0
Test 3: All inputs are steady at VCC or GND to minimize standby current. If internal pull-up is enabled, input voltage level
should be the same as VCC. SCL and SI are at GND. CS# is at VCC. All GPIOs are configured as inputs. Outputs are left
floating or in tri-state mode.
AC ELECTRICAL CHARACTERISTICS - SPI-BUS TIMING SPECIFICATIONS
Unless otherwise noted: TA=-40^o to +85^oC, Vcc=1.65V - 3.6V
SYMBOL
PARAMETER
f_SCL
T_CSS
T_CSH
T_DO
T_DS
T_DH
T_CP
T_CH
T_CL
T_CSW
T_D13
Operating frequency
CS# to SCL setup time
CS# to SCL hold time
SCL fall to SO valid time
SI to SCL setup time
SI to SCL hold time
SCL period
SCL HIGH time
SCL LOW time
CS# HIGH pulse width
SPI input pin interrupt clear
LIMITS
1.8V ± 10%
MIN
MAX
15
20
20
100
20
20
66
30
30
30
200
LIMITS
2.5V ± 10%
MIN
MAX
26
20
20
100
20
20
38
15
15
30
200
LIMITS
3.3V ± 10%
MIN
MAX
26
20
20
100
20
20
38
15
15
30
200
UNIT CONDITIONS
MHz
ns
ns
ns C_L = 30 pF
ns
ns
ns T_CH + T_CL
ns
ns
ns
ns
12