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ST92F124 데이터시트(PDF) 23 Page - STMicroelectronics

부품명 ST92F124
상세설명  8/16-BIT SINGLE VOLTAGE FLASH MCU FAMILY WITH RAM, E3 TM(EMULATED EEPROM), CAN 2.0B AND J1850 BLPD
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제조업체  STMICROELECTRONICS [STMicroelectronics]
홈페이지  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

ST92F124 데이터시트(HTML) 23 Page - STMicroelectronics

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ST92F124/F150/F250 - GENERAL DESCRIPTION
1.3 VOLTAGE REGULATOR
The internal Voltage Regulator (VR) is used to
power the microcontroller starting from the exter-
nal power supply. The VR comprises a Main volt-
age regulator and a Low-power regulator.
– The Main voltage regulator generates sufficient
current for the microcontroller to operate in any
mode. It has a static power consumption (300
µA typ.).
– The separate Low-Power regulator consumes
less power is used only when the microcontrol-
ler is in Low Power mode. It has a different de-
sign from the main VR and generates a lower,
non-stabilized and non-thermally-compensated
voltage sufficient for maintaining the data in
RAM and the Register File.
For both the Main VR and the Low-Power VR, sta-
bilization is achieved by an external capacitor,
connected to one of the VREG pins. The minimum
recommended value is 300 nF, and care must be
taken to minimize distance between the chip and
the capacitor. Care should also be taken to limit
the serial inductance to less than 60nH.
Figure 16. Recommended Connections for VREG
IMPORTANT: The VREG pin cannot be used to drive external devices.
Figure 17. Minimum Required Connections for VREG
Note: Pin 31 of PQFP100 or pin 28 of LQFP100 can be left unconnnected. A secondary stabilization net-
work can also be connected to these pins.
PQFP100
QFP64
C
L
L = Ferrite bead for EMI protection.
Pin 28
C
L
Pin 43
Pin 31
LQFP100
C
L
Pin 40
Pin 28
Suggested type: Murata BLM18BE601FH1: (Imp. 600
Ω at 100 MHz).
C = 300 to 600nF
C
PQFP100
QFP64
C
Pin 43
Pin 31
Pin 28
C
LQFP100
Pin 40
Pin 28
C = 300 to 600nF
9



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