RM0345 datasheet(7/38 Pages) STMICROELECTRONICS

部品番号	RM0345

部品情報	calibration adapter board for SPC563M64xx devices

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7 / 38 page

RM0345

Power supply

Doc ID 024080 Rev 3

7/38

Power supply

The Calibration boards requires a +5 V to supply the on board CAN transceiver and a

+3.3 V to supply the SPC563M64xx calibration bus interface and for the external RAM.

The 3.3 V supply is generated on the SPC563M64CAL144 (rev.B) via the very low drop

voltage regulator by using the +5V. A LED (D1) will light when the board is powered.

Figure 2.

Power supply

By default the 5V is taken from the target application through the VDDREG supply level

(supply input for the internal voltage regulators of the SPC563M64xx). Gauge J14 enables

the powering from the application board. Table 2 shows its option configuration.

In case that no additional power loading could be applied to the application system during

calibration, the +5V can be supplied externally via J4 connector (+5V test point, see

Figure 4) and the gauge J14 (see Figure 3) must be open.

RM0345 データシート(PDF) 7 Page - STMicroelectronics