TMC428-A ETC2 [List of Unclassifed Manufacturers], TMC428-A Datasheet - Page 50

• Manufacturer Part Number: TMC428-A
• Description: Intelligent Triple Stepper Motor Controller with Serial Peripheral Interfaces
• Manufacturer: ETC2 [List of Unclassifed Manufacturers]

TMC428 DATASHEET (v. 2.02 / April 26
17 Power-On-Reset
The TMC428 is equipped with a static and dynamic reset with internal hysteresis (see Figure 17-1). So,
it performs an automatic reset during power-on. If the power supply voltage goes below a threshold, an
automatic power on reset is performed also. The power on reset time tRESPOR also depends on the
power up time of the on-chip voltage regulator (see Table 16-1 ).
Symbol
VDD
Temp
Vop
Voff
Von
tRESPOR
Table 17-1: Characteristics of the on-chip power-on-reset
Figure 17-1: Operating principle of the power-on-reset
Copyright © 2004-2006, TRINAMIC Motion Control GmbH & Co. KG
Voff
Voff
Von
Vop
Von
Vop
0
0
Power supply range
Temperature
Reset on/off
Reset off
Reset on
Reset time of on-chip power-on-reset
static
Parameter
th
tRESPOR
dynamic
, 2006)
Conditions
1.58
1.49
2.14
Min
-55
3.0
2.13
1.98
3.31
Typ
3.3
25
Max
0.80
2.85
2.70
5.52
125
3.6
Unit
°C
µs
V
V
V
V
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