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ST92124DV9T6 データシートの表示(PDF) - STMicroelectronics

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ST92124DV9T6 8/16-BIT SINGLE VOLTAGE FLASH MCU FAMILY WITH RAM, E³ ™ (EMULATED EEPROM), CAN 2.0B AND J1850 BLPD ST-Microelectronics
STMicroelectronics ST-Microelectronics
ST92124DV9T6 Datasheet PDF : 429 Pages
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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
PQFP100
Pin 31
Pin 43
C
LQFP100
Pin 28
Pin 40
C
QFP64
Pin 28
C
L
L
L
C = 300 to 600nF
L = Ferrite bead for EMI protection.
Suggested type: Murata BLM18BE601FH1: (Imp. 600 at 100 MHz).
IMPORTANT: The VREG pin cannot be used to drive external devices.
Figure 17. Minimum Required Connections for VREG
PQFP100
Pin 31
Pin 43
C
LQFP100
Pin 28
Pin 40
C
QFP64
Pin 28
C
C = 300 to 600nF
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.
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