TMC236_1 TRINAMIC [TRINAMIC Motion Control GmbH & Co. KG.], TMC236_1 Datasheet - Page 24

• Manufacturer Part Number: TMC236_1
• Description: High current, low power dissipation microstep stepper motor driver with protection / diagnostics and SPI Interface
• Manufacturer: TRINAMIC [TRINAMIC Motion Control GmbH & Co. KG.]

TMC236/A DATA SHEET (V2.06 / 2009-Jul-30)
SPI Interface Timing
Propagation Times
(3.0 V
unless otherwise specified)
*) SDO is tristated whenever ENN is inactive (high) or CSN is inactive (high).
**) Whenever the PHA / PHB polarity is changed, the chopper is restarted for that phase. However, the chopper does not
switch on, when the SRA resp. SRB comparator threshold is exceeded upon the start of a chopper period.
Using the SPI interface
The SPI interface allows either cascading of multiple devices, giving a longer shift register, or working
with a separate chip select signal for each device, paralleling all other lines. Even when there is only
one device attached to a CPU, the CPU can communicate with it using a 16 bit transmission. In this
case, the upper 4 bits are dummy bits.
SPI Filter (only A-type)
To prevent spikes from changing the SPI settings, SPI data words are only accepted, if their length is
at least 12 bit.
Copyright © 2004, TRINAMIC Motion Control GmbH & Co KG
Symbol
f
t
t
t
t
t
t
t
SCK
t
t
CH
DU
DH
PD
CL
ZC
ES
D
1
SDO
VCC
ENN
CSN
SCK
SDI
Parameter
SCK frequency
SCK stable before and after CSN
change
Width of SCK high pulse
Width of SCK low pulse
SDI setup time
SDI hold time
SDO delay time
CSN high to SDO high impedance
ENN to SCK setup time
CSN high to OA / OB output
polarity change delay
5.5 V, -40°C
t
1
t
ES
Tj
t
CL
t
D
bit11
bit11
150°C; V
t
CH
t
IH
DU
= 2.8V, V
bit10
bit10
Conditions
t
DH
C
ENN = 0
L
= 50pF
IL
**)
*)
= 0.5V; tr, tf = 10ns; C
bit0
bit0
t
1
Min
100
100
DC
50
40
50
50
30
t
1
t
ZC
Typ
40
L
3
= 50pF,
t
OSC
Max
100
4
+ 4
MHz
Unit
µs
ns
ns
ns
ns
ns
ns
ns
ns
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