TMC428_06 Datasheet, PDF (6/58 Pages) List of Unclassifed Manufacturers – Intelligent Triple Stepper Motor Controller with Serial Peripheral Interfaces

TMC428 DATASHEET (v. 2.02 / April 26^th, 2006)
6
4 Pinning
There are three package variants of the TMC428 available. The smaller SSOP16 package is sufficient
for TRINAMIC stepper motor drivers (TMC236 / TMC239 / TMC246 / TMC249) with up to three drivers
in a chain and for most SPI^TM stepper motor drivers from other vendors. Some SPI^TM stepper motor
drivers from other vendors have no serial data output and can not simply be arranged in a daisy chain
to drive more than one motor. The two package variants SOP24 and DIL20 have two additional driver
selection outputs (nSCS2, nSCS3) for those stepper motor drivers without serial data output. All inputs
are Schmitt-Trigger. Possibly unused inputs (REF1, REF2, REF3, SDI_S) need to be connected to
ground.
REF1 ¹
2
REF2
3
REF3
TEST ⁴
5
CLK
6
nSCS_C
SCK_C ⁷
8
SDI_C
16 _{SDI_S}
15
GND
14
V33
13 _V5
12
nSCS_S
11
SCK_S
10 _{SDO_S}
9
SDO_C
SSOP16 (150 MILS)
1
n.c.
2
REF1
REF2 ³
4
REF3
5
V5
TEST ⁶
7
CLK
8
GND
nSCS_C ⁹
10
SCK_C
11
SDI_C
12
n.c.
24
n.c.
23
SDI_S
22 _GND
21
V33
20
V5
19 _nSCS3
18
nSCS2
17
nSCS_S
16 _{SCK_S}
15
SDO_S
14
SDO_C
13
n.c.
SOP24 (300 MILS)
1
nSCS3
2
V5
3
V33
4
GND
5
SDI_S
REF1 ⁶
7
REF2
8
REF3
9
V5
10
TEST
20
nSCS2
19
nSCS_S
18 _{SCK_S}
17
SDO_S
16 _{SDO_C}
15
SDI_C
14 _{SCK_C}
13
nSCS_C
12
GND
11
CLK
DIL20 (300 MILS)
Figure 4-1: TMC428 pin out (*the DIL20 package variant is not recommended for new designs)
Pin
Reset
CLK
nSCS_C
SCK_C
SDI_C
SDO_C / nINT
nSCS_S
nSCS2
nSCS3
SCK_S
SDO_S
SDI_S
REF1
REF2
REF3
V5
V33
GND
TEST
n.c.
SSOP16
-
5
6
7
8
9
SOP24
-
7
9
10
11
14
12
17
-
18
-
19
11
16
10
15
16
23
1
2
2
3
3
4
13
5, 20
14
21
15
8, 22
4
6
-
1, 12, 13, 24
DIL20*
-
11
13
14
15
16
19
20
1
18
17
5
6
7
8
2, 9
3
4, 12
10
-
In/Out
-
I
I
I
I
O
O
O
O
O
O
I
I
I
I
I
-
Description
internal power-on reset
clock input
low active SPI chip select input driven from µC
serial data clock input driven from µC
serial data input driven from µC
serial data output to µC input / multiplexed nINTERRUPT
output if communication with µC is idle (resp. nSCS_C = 1)
Important Note: SDO_C will never be high impedance, but
this function can added with a single gate 74HCT1G125
(pls. refer Figure 4, page 9)
SPI chip select signal to stepper motor driving chain
SPI chip select signal (SOP24 & DIL20 package only)
SPI chip select signal (SOP24 & DIL20 package only)
serial data clock output to SPI stepper motor driver chain
serial data output to SPI stepper motor driver chain
serial data input from SPI stepper motor driver chain
Note: pull-up/-down resistor at SDI_S avoids high
impedance
reference switch input 1
reference switch input 2
reference switch input 3
+5V supply / +3.3V supply
470 nF ceramic capacitor pin / +3.3V supply
ground
must be connected to GND as close as possible to the chip
not connected
Table 4-1: TMC428 pin out (*the DIL20 package variant is not recommended for new designs)
Copyright © 2004-2006, TRINAMIC Motion Control GmbH & Co. KG