MT-X1S
Manual
Revision B Changes
Revision B Changes
Revision B includes the following changes:
1) Add jumpers J33 and J34 to allow routing of the USB data lines to either the XMEGA or the AVR.
Jumpers J10 and J11 were changed to 3pad to support this. The Serial RAM cannot be used when
the XMEGA is connected to USB.
2) Add PTC fuse to USB Vbus
3) Change both crystals and buttons to SMT
4) Change 32.768KHz crystal load capacitors
5) Support a variant of the board without the onboard PDI programmer / serial bridge by adding J35
through J38:
* J35 connects the STS_LED to TX (XMEGA F2)
* J36 connects the PROG button to XCK (XMEGA F1)
* J37 disconnects the debouncing capacitor of the Reset button for use with the XMEGA
* J38 connects Reset button to XMEGA PDI_CLK (also reset)
Board Variants (Rev B only)
Board Variants (Rev B only)
Revision B of the MTX1S is sold with two hardware options:
1) Onboard PDI Programmer / Serial Bridge
2) Onboard Peripheral Devices
for a total of four board variants. The schematic shows the variant with both options installed.
The peripheral devices include:
1) Micro SD card slot
2) Relay driver
3) Precision reference
4) Audio amplifier
5) Temperature sensor
6) Serial RAM
7) RS232 or RS485
The 4 LEDs are always installed
The PDI programmer / serial bridge includes:
1) AT90USB162 and related parts (8MHz crystal, capacitors, etc)
2) bilateral switch (TC7W66)
3) PWR LED (STS LED is always installed)
March 2, 2017
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