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L9942 Arkusz danych(PDF) 8 Page - STMicroelectronics

Numer części L9942
Szczegółowy opis  Integrated stepper motor driver for bipolar stepper motors with microstepping and programmable current profile
PDF  40 Pages
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Producent  STMICROELECTRONICS [STMicroelectronics]
Strona internetowa  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L9942 Arkusz danych(HTML) 8 Page - STMicroelectronics

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Block diagram and pin information
L9942
8/40
Doc ID 11778 Rev 7
20
RREF
Reference Resistor The reference resistor is used to generate a
temperature stable reference current used for current control and internal
oscillator. At this output a voltage of about 1.28V is present. The resistor
should be chosen that a current of about 200uA will flow through the
resistor.
21
EN
Enable input: The input requires CMOS logic levels. The EN input has a
pull-down resistor. In standby-mode outputs will be switched off and all
registers will be cleared. If EN is set to a logic high level then the device will
enter the active mode.
Table 2.
Pin description (continued)
Pin
Symbol
Function



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