HI-8435 Datasheet, PDF (18/21 Pages) Holt Integrated Circuits – 32-Channel Ground/Open or Supply/Open

HI-8435
AC ELECTRICAL CHARACTERISTICS
VDD = 3.3V, TA = Operating Temperature Range
PARAMETER
SYMBOL
SPI INTERFACE TIMINGS
SCK clock period
CS active after last SCK rising edge
CS setup time to first SCK rising edge
CS hold time after last SCK falling edge
CS inactive between SPI instructions
SPI SI Data set-up time to SCK rising edge
SPI SI Data hold time after SCK rising edge
SCK rise time
SCK fall time
SCK pulse width high
SCK pulse width low
SO valid after SCK falling edge
SO high-impedance after SCK falling edge
MR pulse width
SENSOR TIMINGS
Delay, change at sense input to valid status in SO_n
Delay, change of Threshold to valid status in SO_n
tCYC
tCHH
tCES
tCEH
tCPH
tDS
tDH
tSCKR
tSCKF
tSCKH
tSCKL
tDV
tCHZ
tMR
LIMITS
UNITS
MIN TYP MAX
50
ns
5
ns
5
ns
5
ns
55
ns
10
ns
10
ns
10
ns
10
ns
20
ns
20
ns
20
ns
20
100
ns
1
μs
1
μs
CS
t_CHH
SCK
t _DS
SI
t _CYC
t _CES
t _DH
MSB
t _SCKF
t _SCKR
FIGURE 12. SPI Serial Input Timing
CS
t _CYC
SCK
t _SCKH
t _SCKL
t _DV
SO
Hi Impedance
MSB
FIGURE 13. SPI Serial Output Timing
t _CPH
t _CEH
LSB
t _CPH
t _CHZ
LSB
Hi Impedance
HOLT INTEGRATED CIRCUITS
18