TMC424-PI24 Trinamic Microchips, TMC424-PI24 Datasheet - Page 48

• Manufacturer Part Number: TMC424-PI24
• Description: Economic Miniature Three Axis Microstepping Stepper Motor Controller
• Manufacturer: Trinamic Microchips

TMC428 DATASHEET (V. 2.00 / November 12, 2003)
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 © 2000–2003 TRINAMIC Microchips GmbH
Voff
Von
Vop
Voff
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
tRESPOR
dynamic
Conditions
1.58
1.49
2.14
Min
3.0
-55
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
48