Datasheet

 2017 Microchip Technology Inc. DS60001516A-page 17
SAM9G20
Figure 4-2: Power-up Sequence Implementation Example on AT91SAM9G20-EK Rev.C
4.3.2 Power-down Sequence
Switch off the VDDIOM and VDDIOP power supplies prior to, or at the same time, as VDDCORE. No power-up or power-down restrictions
apply to VDDBU, VDDPL, VDDANA and VDDUSB.
SHDN
5V
5V
5V
5V
5V
3V3
1V0
5V
10 SQUARE CM COPPER AREA FOR HEAT SINKING
WITH NO SOLDER MASK
REGULATED
5V ONLY
FORCE
POWER
ON
3V3 CURRENT MEASURE
R168
NOT POPULATED
R168
NOT POPULATED
J3J3
C12
10PF
C12
10PF
+
-
MN15B
LM293
+
-
MN15B
LM293
5
6
7
8
4
J2J2
C5
1μF
C5
1μF
C3
10μF
C3
10μF
Q2
Si1563EDH
Q2
Si1563EDH
1 32
456
C6
1μF
C6
1μF
+
C1
330μF
+
C1
330μF
C11
22μF
C11
22μF
R11
120K
R11
120K
Q3
IRLML6402
Q3
IRLML6402
1
32
R165
15K
R165
15K
+
-
MN15A
LM293
+
-
MN15A
LM293
3
2
1
R10
10K
R10
10K
CR1
5V
CR1
5V
R164
1K
R164
1K
C14
15PF
C14
15PF
MN1
LT1963AEQ-3.3
MN1
LT1963AEQ-3.3
VIN
2
GND
3
VOUT
4
6
GND
SD
1
FB
5
C15
4.7μF
C15
4.7μF
R167
10K
R167
10K
R9
10K
R9
10K
R3
100K
R3
100K
R7
30K
R7
30K
R163
10K
R163
10K
C147
100NF
C147
100NF
C2
10V
10μF
C2
10V
10μF
C4
10μF
C4
10μF
R166
10K
R166
10K
R169
NOT POPULATED
R169
NOT POPULATED
D1
MMSD4148
D1
MMSD4148
R161
82K
R161
82K
R162
15K
R162
15K
J1J1
1
2
3
MN3
TPS60500
MN3
TPS60500
C1M
8
GND
9
VOUT
7
EN
1
VIN
5
C1P
6
C2M
3
C2P
4
FB
10
PG
2