1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
D D
C C
B B
A A
1 of 4
ATtiny3217 Curiosity Nano
2/20/2020
ATtiny3217_Curiosity_Nano_TopLevel.SchDoc
Project Title
PCB Assembly Number: PCBA Revision:
File:
PCB Number: PCB Revision:
Designed with
Drawn By:
M.LOPER
Sheet Title
Top Level
Engineer:
PB / TF
A08-3055 2
Size
A3
A09-3333 2
Page:
Date:
Altium.com
Label PCBA
Product number/revision
Serial number
LABEL1
DBG0
CDC_UART
DBG1
DBG3
DBG2
VOFF
ID_SYS
S2
ATtiny3217_Curiosity_Nano_Target_MCU.SchDoc
CDC_UART
DBG2
DBG1
DBG3
DBG0
VOFF
ID_SYS
S1
ATtiny3217_Curiosity_Nano_Debugger.SchDoc
A11-0406
FE AB 26 E0
FF FF FF FF
9F 0C 4D 00
F3 57 E8 96
F4 64 98 02
35 07 92 86
62 87 5F 0E
FW1
A12-1314
TESTDOC1
S3
ATtiny3217_Curiosity_Nano_Revision_History.SchDoc
A08-3055
PCB1
$ >_
A11-0473
TEST1
A12-1424
PCBADOC1
USB
Program / Debug Interface
Mass Storage Drag & Drop Programming
IDE
Serial / CDC port
Data Visualizer
PB3
PB2USART0 TX
USART0 RX
DGI (Data Gateway Interface)
PB7 (SW0)Debug GPIO 0
Terminal
> Hello World!
CURIOSITY (E:)
UPDI PA0
Program
helloworld.hex
Debug
Debugger ATtiny3217
Debug GPIO 1 PA3 (LED0)
ATtiny3217 Curiosity Nano
On-Board Peripherals
PB7
PA3
LED0
SW0
Active Low
Active Low
COFW1
COLABEL1
COPCB1
COPCBADOC1
COTEST1
COTESTDOC1
1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
D D
C C
B B
A A
2 of 4
ATtiny3217 Curiosity Nano
2/20/2020
ATtiny3217_Curiosity_Nano_Target_MCU.SchDoc
Project Title
PCB Assembly Number: PCBA Revision:
File:
PCB Number: PCB Revision:
Designed with
Drawn By:
M.LOPER
Sheet Title
ATtiny3217 Curiosity Nano
Engineer:
PB / TF
A08-3055 2
Size
A3
A09-3333 2
Page:
Date:
Altium.com
PA6_ADC0_AIN6
PA7_ADC0_AIN7
PA3_LED0_TCA0_WO3
PB6
PB5_ADC0_AIN8
PB4_TCA0_WO1
PC4_ADC1_AIN10
PC2_SPI0_MOSI
PC1_SPI0_MISO
PC0_SPI0_SCK
PB0_I2C0_SCL
PB1_I2C0_SDA
PB2_TOSC2
GND
VCC_TARGET
100n
C200
PC3_SPI0_SS
PC0_SPI0_SCK
PC1_SPI0_MISO
PC2_SPI0_MOSI
PB0_I2C0_SCL
PB1_I2C0_SDA
PA2_USART0_RX
PA1_USART0_TX PC5_ADC1_AIN11
PC4_ADC1_AIN10
PA4_ADC0_AIN4
PB4_TCA0_WO1
PA5_TCA0_WO5
PA6_ADC0_AIN6
PB6
PB5_ADC0_AIN8
1k
R203
USER LED
VCC_TARGET
PC3_SPI0_SS
GND
USER BUTTON
PB7_SW0
PA7_ADC0_AIN7
1k
R202
YELLOW LED
SML-D12Y1WT86
21
D200
TS604VM1-035CR
1 3
42
SW200
GND
GNDGND
PA3_LED0_TCA0_WO3
PB7_SW0
BLM18PG471SN1
L200
2.2uF
C205
GND
DBG0
CDC_UART
TX
RX
UAR T
CDC_TX
CDC_RX
DBG2
DBG1
DBG3
DBG2
DEBUGGER CONNECTIONS
DBG1
DBG3
DBG0
VOFF
ID_SYS
ID_SYS
VOFF
TARGET BULK
PB7_SW0
PA3_LED0_TCA0_WO3
VBUS
PB3_TOSC1
PC5_ADC1_AIN11
PA0_UPDI
GND
CDC RX
3
CDC TX
4
DBG1
5
DBG2
6
0 TX
7
1 RX
8
2 SDA
9
3 SCL
10
4 MOSI
11
5 MISO
12
6 SCK
13
7 SS
14
GND
15
0 (TX)
16
1 (RX)
17
DBG3
32
DBG0
31
GND
30
VCC
29
PWM 3
24
ADC 2
23
ADC 1
22
ADC 0
21
GND
20
3
19
2
18
ADC 7
28
ADC 6
27
ADC 5
26
PWM 4
25
DEBUGGER
TARGET
ID
2
VOFF
33
RESERVED
1
VBUS
34
CNANO34-pin edge connector
J200
PB2_USART0_TX
PB3_USART0_RX
PB2_USART0_TX
PB3_USART0_RX
PA1_USART0_TX
PA2_USART0_RX
PA4_ADC0_AIN4
PB7_SW0
PA5_TCA0_WO5
PA0_UPDIJ203
J201
J204
J205
J206
ATtiny3217
J202
GNDGND
32kHz CRYSTAL
J209
PB3_TOSC1
PB2_TOSC2
J210 J211
J212
J213
PB2_USART0_TX
PB3_USART0_RX
NC
13pF
C204
N.M
10p
C203
N.M
VCC_EDGE
VCC_EDGE
ATtiny3217
UPDI
GPIO1
GPIO0
NA
DBG0
DBG1
DBG2
DBG3
Debugger
CDC TX
CDC RX
USART0 RX
USART0 TX
VTG 1.8V - 5.5V
PA3
PB7
-
PA0
PB2
PB3
Name Pin
32.768kHz
XC200
N.M
PA2
1
PA3(CLKI)
2
GND
3
VCC
4
PA4
5
PA5
6
PA6
7
PA7
8
PB7
9
PB6
10
PB5
11
PB4
12
(TOSC1)PB3
13
(TOSC2)PB2
14
PB1
15
PB0
16
PC0
17
PC1
18
PC2
19
PC3
20
PC4
21
PC5
22
(UPDI/RESET)PA0
23
PA1
24
PAD
25
ATtiny3217-MFRU200
NOTE on UART/CDC:
RX/TX on the header denotes the
input/output direction of the signal
respective to it's source.
CDC TX is output from the
DEBUGGER.
CDC RX is input to the DEBUGGER.
TX is output from the TARGET device.
RX is input to the TARGET device.
NOTE on I2C:
No pull-ups on board. Pull-ups should be
mounted close to slave device(s).
Crystal datasheet:
Ccrystal = 7pF
max ESR = 70kOhm
Accuracy ±20ppm
ATtiny3217 datasheet:
Cxin = 5.5pF
Cxout = 5.5pF
Cl ≈ 1/( (1/5.5pF)+ (1/5.5pF) ) ≈ 2.75pF
Maximum ESR @ 12.5pF = 40kOhm
Maximum ESR @ 7.5pF = 80kOhm
Estimated Cpcb = 0.5pF
Estimated load
C = 2 (Ccrystal- Cpara - Cpcb)
C = 2 (7pF - 2.75pF - 0.5pF)
C = 7.5pF
Selected in design after verification
C= 10/13pF
PIC20001
PIC20002
COC200
PIC20301
PIC20302
COC203
PIC20401
PIC20402
COC204
PIC20501
PIC20502
COC205
PID20001
PID20002
COD200
PIJ20001
PIJ20002
PIJ20003
PIJ20004
PIJ20005
PIJ20006
PIJ20007
PIJ20008
PIJ20009
PIJ200010
PIJ200011
PIJ200012
PIJ200013
PIJ200014
PIJ200015
PIJ200016
PIJ200017
PIJ200018
PIJ200019
PIJ200020
PIJ200021
PIJ200022
PIJ200023
PIJ200024
PIJ200025
PIJ200026
PIJ200027
PIJ200028
PIJ200029
PIJ200030
PIJ200031
PIJ200032
PIJ200033
PIJ200034
COJ200
PIJ20101
PIJ20102
COJ201
PIJ20201
PIJ20202
COJ202
PIJ20301
PIJ20302
COJ203
PIJ20401
PIJ20402
COJ204
PIJ20501
PIJ20502
COJ205
PIJ20601
PIJ20602
COJ206
PIJ20901
PIJ20902
COJ209
PIJ21001
PIJ21002
COJ210
PIJ21101
PIJ21102
COJ211
PIJ21201
PIJ21202
COJ212
PIJ21301
PIJ21302
COJ213
PIL20001
PIL20002
COL200
PIR20201
PIR20202
COR202
PIR20301
PIR20302
COR203
PISW20001
PISW20002
PISW20003
PISW20004
COSW200
PIU20001
PIU20002
PIU20003
PIU20004
PIU20005
PIU20006
PIU20007
PIU20008
PIU20009
PIU200010
PIU200011
PIU200012
PIU200013
PIU200014
PIU200015
PIU200016
PIU200017
PIU200018
PIU200019
PIU200020
PIU200021
PIU200022
PIU200023
PIU200024
PIU200025
COU200
PIXC20001
PIXC20002
COXC200
POCDC0UART
POCDC0UART0RX
POCDC0UART0TX
PODBG0
PODBG1
PODBG2
PODBG3
POID0SYS
POV\O\F\F\