ST92F250CV2 View Datasheet(PDF) - STMicroelectronics

Part Name

Description

Manufacturer

ST92F250CV2

8/16-bit single voltage Flash MCU family with RAM, E³ TM (emulated EEPROM), CAN 2.0B and J1850 BLPD

STMicroelectronics 

Voltage regulator

ST92F124xx/ST92F150Cxx/ST92F150JDV1/ST92F250CV2

3

Voltage regulator

The internal Voltage Regulator (VR) is used to power the microcontroller starting from the

external power supply. The VR comprises a Main voltage 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; it is used only when the

microcontroller is in Low Power mode. It has a different design 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, stabilization 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 60 nH.

Figure 16. Recommended connections for VREG

PQFP100

Pin 31

Pin 43

C

L

LQFP100

Pin 28

Pin 40

C

L

QFP64

Pin 28

C

L

C = 300 to 600nF

L = Ferrite bead for EMI protection.

Suggested type: Murata BLM18BE601FH1: (Imp. 600 Ω 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

Note:

C = 300 to 600nF

Pin 31 of PQFP100 or pin 28 of LQFP100 can be left unconnected. A secondary

stabilization network can also be connected to these pins.

40/523

Doc ID 8848 Rev 7

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