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M451
May. 4, 2018
Page
182
of
1006
Rev.2.08
M4
51
S
E
RI
E
S
T
E
CH
NICA
L RE
F
E
R
E
NC
E
M
A
NU
A
L
RTC power from V
BAT
provides the power for PF.0~PF.2, RTC and 80 bytes backup
registers.
A dedicated power from V
DDIO
supplies the power for PE.8~PE.13.
The outputs of internal voltage regulators, LDO_CAP and USB_VDD33_CAP, require an external
capacitor which should be located close to the corresponding pin. Analog power (AV
DD
) should be
the same voltage level of the digital power (V
DD
). The Figure 6.2-7 shows the power distribution of
the NuMicro
®
M451.
Note:
When chip is powered on, V
BAT
will have additional leakage due to power-on detect circuit
still being enabled. Please refer to M451 Errata for detailed description (M45xD/M45xC Only).
USB
Transceiver
AV
DD
AV
SS
V
D
D
V
S
S
V
DD
(M45xG/M45xE Only)
V
BUS
(M45xD/M45xC Only)
USB_D+
USB_D-
V
B
A
T
22.1184 MHz
HIRC
Oscillator
10 kHz
LIRC
Oscillator
SRAM
PLL
5V to 3.3V
LDO
IO Cell
V
DD
to 1.8V
LDO
POR50
POR18
Temperature
Sensor
4~20 MHz
crystal
oscillator
32.768 kHz
crystal
oscillator
Digital Logic
Flash
RTC &
80 bytes
backup
register
Power On
Control
X
3
2
_
IN
(P
F
.1
)
X
3
2
_
O
U
T
(P
F
.0
)
V
R
E
F
XT1_OUT
XT1_IN
GPIO except
PF.0 ~PF.2 and
PE.8~PE.13
1.8V
1.8V
3.3V
USB_VDD33_CAP
LDO_CAP
1uF
1uF
M451 Power Distribution
V
DDIO
IO Cell
PE.8~PE.13
V
BAT
to 1.8V
LDO
IO Cell
Brown-
out
Detector
Low Voltage Reset
12-bit DAC
12-bit ADC
Internal
Reference
Voltage
Analog
Comparator
P
F
.0
~
P
F
.2
1
u
F
Figure 6.2-7 NuMicro
®
M451 Power Distribution Diagram
Содержание ARM Cortex NuMicro M451 Series
Страница 301: ...M451 May 4 2018 Page 301 of 1006 Rev 2 08 M451 SERIES TECHNICAL REFERENCE MANUAL...
Страница 324: ...M451 May 4 2018 Page 324 of 1006 Rev 2 08 M451 SERIES TECHNICAL REFERENCE MANUAL Figure 6 4 18 Checksum Calculation Flow...
Страница 355: ...M451 May 4 2018 Page 355 of 1006 Rev 2 08 M451 SERIES TECHNICAL REFERENCE MANUAL 2 0 Reserved Reserved...
Страница 625: ...M451 May 4 2018 Page 625 of 1006 Rev 2 08 M451 SERIES TECHNICAL REFERENCE MANUAL 00 5 bits 01 6 bits 10 7 bits 11 8 bits...
Страница 721: ...M451 May 4 2018 Page 721 of 1006 Rev 2 08 M451 SERIES TECHNICAL REFERENCE MANUAL the SCL line 1 0 Reserved Reserved...
Страница 1001: ...M451 May 4 2018 Page 1001 of 1006 Rev 2 08 M451 SERIES TECHNICAL REFERENCE MANUAL LQFP 64L 10x10x1 4 mm footprint 2 0 mm 9 2...
Страница 1002: ...M451 May 4 2018 Page 1002 of 1006 Rev 2 08 M451 SERIES TECHNICAL REFERENCE MANUAL LQFP 64L 7x7x1 4 mm footprint 2 0 mm 9 3...
Страница 1003: ...M451 May 4 2018 Page 1003 of 1006 Rev 2 08 M451 SERIES TECHNICAL REFERENCE MANUAL LQFP 48L 7x7x1 4mm footprint 2 0mm 9 4...