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RM0345
Calibration bus interface and External Memory
Doc ID 024080 Rev 3
13/38
Figure 6.
SRAM supply circuitry
) 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
).
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
R1
330
D1
LED
C35
100n
C34
4.7uF
C37
100n
C36
2.2uF
GND
IN
1
GN
D
2
OUT
3
U2
LF33CDT-TRY
VSTBY
+3.3V
C31
1uF
GND
/RESET
Vmem
GND
Vmem
GND
5
3
1
2
4
U7
74V1G00CTR
5
3
1
2
4
U8
74V1G32CTR
ECU_Vstby
/RSOUT
/CE_RAM
/CS0
Vmem
D2
20CJQ060
Q1
STT5PF20V
1
3
2
J11
GAPGRI00344
Содержание SPC563M64CAL144
Страница 3: ...RM0345 Contents Doc ID 024080 Rev 3 3 38 Revision history 37...
Страница 31: ...RM0345 Mechanical constrains Doc ID 024080 Rev 3 31 38 Figure 15 Side and bottom view drawing 3LQ 8QLWV PP 3 5...
Страница 32: ...Mechanical constrains RM0345 32 38 Doc ID 024080 Rev 3 Figure 16 Complete system side view drawing 3 5 8QLWV PP...