Jumpers and Switches
3.4.1 MCU Power Supply Voltage
JP21 With this jumper it is possible to connect the MCU external bus interface supply VDD35 to 3.3V. The MCU MB91460 series supports the function to supply the MCU with 5V so that the normal I/O ports work with 5V and supply the external bus interface with 3.3V.
JP23 This jumper is used to connect the HVDD5 supply to MCUVcc. The HVDD5 is the MCU supply voltage for the high current ports.
JP25 This jumper is used to connect the VDD5R MCU supply pins to MCUVcc JP26 This jumper is used to connect the Vcc voltage to MCUVcc.
JP27 This jumper is used to connect the VDD5 MCU supply pins to MCUVcc
JP28 This jumper is used to connect the HVSS5 MCU pins to GND. HVSS5 are the GND pins for the high current ports.
Note:
JP23, JP25, JP26, JP27 and JP28 can be used for measurements of power consumption of the MCU.
| Jumper |
| Setting |
|
| Description |
|
| JP21 |
|
|
| VDD35 connected to MCUVcc |
| |
|
|
| VDD35 connected to 3.3V | ||||
|
|
|
| ||||
| JP23 |
| ON (closed) |
|
| HVDD5 connected to MCUVcc |
|
|
| OFF (open) |
| HVDD5 not connected to MCUVcc | |||
|
|
|
| ||||
| JP25 |
| ON (closed) |
|
| VDD5R connected to MCUVcc |
|
|
| OFF (open) |
| VDD5R not connected to MCUVcc | |||
|
|
|
| ||||
| JP26 |
| ON (closed) |
| MCUVcc connected to Vcc |
| |
|
| OFF (open) |
| MCUVcc not connected to Vcc | |||
|
|
|
| ||||
| JP27 |
| ON (closed) |
|
| VDD5 connected to MCUVcc |
|
|
| OFF (open) |
| VDD5 not connected to MCUVcc | |||
|
|
|
| ||||
| JP28 |
| ON (closed) |
| HVSS5 connected to GND |
| |
|
| OFF (open) |
| HVSS5 not connected to GND | |||
|
|
|
| ||||
Default: grey
Table 3-7: MCU Power Supply SK-91F467-FLEXRAY
3.4.2 MCU Analogue Power Supply Voltage
The power supply as well as the reference voltage for the
JP15 Connects power supply AVcc of the A/D converter to MCUVcc JP16 Connects high reference voltage AVRH of the A/D converter to AVcc JP18 Connects AVss of the A/D converter to GND
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