ISPJUNO - Portable ISP Programmer - User Guide V0.84 – 17/04/20
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5.3 Supported programming interfaces
The ISPjuno programmer is capable of supporting the following
'programming interfaces'
...
Programming
Interface
ISPjuno
SPI
Yes*
JTAG
Yes*
I2C
No
UART
Yes*
AVR XMEGA PDI
Yes
AVR ATtiny TPI (LV)
Yes
ATtiny TPI Port (HV +12V VPP)
Yes
AVR UPDI (LV)
Yes
AVR UPDI (HV +12V VPP)
Yes
Programmable clock output
Yes - 32 kHz
Please note:
•
*The ‘SPI interface’, ‘JTAG interface’ and ‘UART interface’ signals all share the same physical
programmer I/O lines.
•
This means that the programmer can only be connected to a target device via one of these
programming interfaces at any one time.
5.4 Programmer Target I/O Capability
Target I/O
Capability
ISPjuno
Programmable Target
I/O
5 x I/O
1 x O
I/O Voltage Range
1.8 – 5.0V
I/O Isolation
-
ESD protection on
Target I/O lines
IEC61000-4-2, air discharge:
15 kV
IEC61000-4-2, contact
discharge: 8kV
Over-voltage protection
on Target I/O lines
YES
Voltages over 9V are clamped.
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