st92f124 STMicroelectronics, st92f124 Datasheet - Page 22

• Manufacturer Part Number: st92f124
• Description: 8/16-bit Single Voltage Flash Mcu Family With Ram, E3 Tmemulated Eeprom, Can 2.0b And J1850 Blpd
• Manufacturer: STMicroelectronics

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
– The separate Low-Power regulator consumes
Figure 16. Recommended Connections for V
IMPORTANT: The V
Figure 17. Minimum Required Connections for V
Note: Pin 31 of PQFP100 or pin 28 of TQFP100 can be left unconnnected. A secondary stabilization net-
work can also be connected to these pins.
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C = 300 to 600nF
L = Ferrite bead for EMI protection.
Suggested type: Murata BLM18BE601FH1: (Imp. 600
C = 300 to 600nF
current for the microcontroller to operate in any
mode. It has a static power consumption (300
µA typ.).
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,
Pin 31
Pin 31
PQFP100
PQFP100
REG
pin cannot be used to drive external devices.
Pin 43
Pin 43
L
C
C
Pin 28
Pin 28
TQFP100
REG
TQFP100
REG
For both the Main VR and the Low-Power VR, sta-
bilization is achieved by an external capacitor,
connected to one of the V
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.
Pin 40
L
non-stabilized and non-thermally-compensated
voltage sufficient for maintaining the data in
RAM and the Register File.
Pin 40
at 100 MHz).
C
C
Pin 28
Pin 28
QFP64
QFP64
REG
L
C
C
pins. The minimum