RM0345 datasheet(13/38 Pages) STMICROELECTRONICS

部件名	RM0345

功能描述	calibration adapter board for SPC563M64xx devices

PDF	38 Pages

Scroll/Zoom	100%

制造商	STMICROELECTRONICS [STMicroelectronics]

网页	http://www.st.com

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13 / 38 page

RM0345

Calibration bus interface and External Memory

Doc ID 024080 Rev 3

13/38

Figure 6.

SRAM supply circuitry

The jumper J11 (see Figure 6) allows to select the standby operation of the SRAM.

The standby voltage can be selected between:

●

SPC563M64xx Vstby pin: same standby voltage as the internal RAM;

●

the 3.3V generated on the

calibration board;

●

ECU_Stby supplied by the calibration connector J9 (see Figure 10).

Table 4.

J11 configuration of SRAM supply for retention mode

J11

SRAM standby supply source

all open

ECU_Stby: standby voltage on J9 calibration connector

1-2 closed

Upon the board +3.3V generated

2-3 closed

VSTBY input pin of the

SPC563M64xx from the target application

+5V

+3.3V

330

LED

C35

100n

C34

4.7uF

C37

100n

C36

2.2uF

GND

OUT

LF33CDT-TRY

VSTBY

+3.3V

C31

1uF

GND

/RESET

Vmem

GND

Vmem

GND

74V1G00CTR

74V1G32CTR

ECU_Vstby

/RSOUT

/CE_RAM

/CS0

Vmem

20CJQ060

STT5PF20V

J11

GAPGRI00344

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