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R
USB Micro-B
1
VBUS
2
D-
D-
3
D+
D+
4
ID
5
GND
C1
10 pF
A-Star 32U4 Prime LV
©2019 Pololu Corporation
www.pololu.com
nRESET
SW1
VBUS
ATmega32U4
13
RESET
7
R2
VBus
D-R
3
D-
4
R1
22
D+
D+R
22
RXLED
8
PB0 (SS/PCINT0)
SCK
9
PB1 (PCINT1/SCK)
MOSI
10
PB2 (PDI/MOSI/PCINT2)
MISO
11
PB3 (PDO/MISO/PCINT3)
D8
28
PB4 (PCINT4/ADC11)
D9
29
PB5 (OC1A/OC4B/PCINT5/ADC12)
D10
30
PB6 (OC1B/OC4B/PCINT6/ADC13)
D11
12
PB7 (OC0A/OC1C/PCINT7/RTS)
D3
18
PD0 (INT0/SCL/OC0B)
D2
19
PD1 (INT1/SDA)
D0
20
PD2 (INT2/RXD1)
D1
21
PD3 (INT3/TXD1)
D4
25
PD4 (ICP1/ADC8)
TXLED
22
PD5 (XCK1/CTS)
D12
26
PD6 (T1/OC4D/ADC9
D6
27
PD7 (T0/OC4D/ADC10)
Y1 16 MHz
XTAL2
16
XTAL2
XTAL1
17
XTAL1
C2
10 pF
6
UCap
14
VCC
34
VCC
2
UVcc
24
AVCC
44
AVCC
42
AREF
AREF
33
HWB
PE2 (HWB)
1
PE6 (INT6/AIN0)
31
PC6 (OC3A/OC4A)
32
D13
PC7 (ICP3/CLK0/OC4A)
36
PF7 (ADC7/TDI)
37
PF6 (ADC6/TDO)
38
PF5 (ADC5/TMS)
39
PF4 (ADC4/TCK)
40
PF1 (ADC1)
41
PF0 (ADC0)
Page 1 of 6
Primary microcontroller connections
VCC
L1
AVCC
10 uH
C5
0.1 uF
AVR3V3
C3
1 uF
VCC
AVCC
C4
0.1 uF
D7
D5
A0
A1
A2
A3
A4
A5
VCC
C25
0.1 uF
C31
C32
0.1 uF
0.1 uF
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Related Manuals for Pololu A-Star 32U4 Prime LV
Summary of Contents for Pololu A-Star 32U4 Prime LV
- Page 1 Schematic diagram A-Star 32U4 Prime LV ©2019 Pololu Corporation Primary microcontroller connections www.pololu.com AVCC nRESET 10 uH 0.1 uF VBUS ATmega32U4 AVR3V3 USB Micro-B RESET UCap VBUS VBus 1 uF UVcc RXLED AVCC PB0 (SS/PCINT0) 0.1 uF PB1 (PCINT1/SCK) AVCC...
- Page 2 Schematic diagram A-Star 32U4 Prime LV ©2019 Pololu Corporation External connections www.pololu.com Optional power and ground buses Reserved AREF nRESET AVRISP MISO MISO MOSI MOSI nRESET RXLED TXLED Reserved AREF nRESET BZCTRL VREG BATLEV STAT SHDN Page 2 of 6...
- Page 3 Schematic diagram A-Star 32U4 Prime LV ©2019 Pololu Corporation On-board hardware www.pololu.com J18A J18B 30.1k J18C MISO J18D Buzzer BATLEV BZCTRL J18I 100k J18J MISO 2.21k 1.5k 2.21k 1.5k Yellow Green Page 3 of 6...
- Page 4 Schematic diagram A-Star 32U4 Prime LV ©2019 Pololu Corporation Power multiplexing www.pololu.com VREG VBUS VREG VBUS TPS2113A STAT 100k STAT 2.21k 10 uF VSNS 10 uF 10 uF 0.1 uF ILIM 0.1 uF 1 uF 10 uF 0.1 uF 0.1 uF...
- Page 5 Schematic diagram A-Star 32U4 Prime LV ©2019 Pololu Corporation Regulators and power connectors www.pololu.com Power inputs BAT+ BAT+ BAT+ BAT+ BAT+ BAT+ 3.5 mm 3.5 mm DC barrel jack DC barrel jack 1.2 uH BAT+ VREG 12/13 VOUT C26A C26C...
- Page 6 Schematic diagram A-Star 32U4 Prime LV ©2019 Pololu Corporation microSD hardware www.pololu.com (microSD version only) microSD 100k MOSI 100k DAT1 nCS_IN IRQ/DAT1 DAT2 DAT2 100k MISO nCS_IN DAT2 DAT1 Page 6 of 6...
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