IC-MD Datasheet, PDF (6/23 Pages) IC-Haus GmbH – ENCODER RECEIVER/COUNTER WITH SPI AND BiSS

iC-MD RS-422 QUADRATURE
preliminary
ENCODER RECEIVER/COUNTER WITH SPI AND BiSS
Rev A1, Page 6/23
OPERATING REQUIREMENTS: SPI Interface
Operating Conditions: VDD = 3 . . . 5.5 V, Tj = -40 . . . 125 °C, unless otherwise noted.
Item Symbol Parameter
No.
Conditions
SPI Interface
I001 tsCCL
Setup Time:
NCS hi → lo before SCK lo → hi
I002 tsDCL
Setup Time:
MOSI stable before SCK lo → hi
I003 thDCL
Hold Time:
MOSI stable after SCK lo → hi
I004 tCLh
Signal Duration SCK hi
I005 tCLI
Signal Duration SCK lo
I006 thCLC Hold Time: NCS lo after SCK lo → hi
I007 tCSh
Signal Duration NCS hi
I008 tpCLD
Propagation Delay:
MISO stable after SCK hi → lo
I009 tpCSD
Propagation Delay:
MISO high impedance after
NCS lo → hi
I010 f(SCK) Clock Frequency
Min.
15
20
0
25
25
25
0
Unit
Max.
ns
ns
ns
ns
ns
ns
ns
40
ns
25
ns
10
MHz
NCS
SCK
MOSI
MISO
t_sCCL
MSB in
t_sDCL t_hDCL
tristate
t_CLh t_pCLl
t_hCLC
t_CSh
LSB in
NCS
SCK
MOSI
MISO
t_pCLh t_pCLl
t_hCLC
t_CSh
don’t care
t_pCLD
t_pCLD
MSB out
t_pCSD
LSB out
Figure 1: SPI write cycle (top) and read cycle (bottom)