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HV3 can also be reconfigured as a sinking output. To do so, remove the 0 Ω surface- mounted resistor R56, and solder on a 0 Ω
| J5 |
|
GND | VCC |
|
RXC | RXB |
|
TXC | TXB |
|
PC1 | PC0 |
|
PC3 | PC2 |
|
PC5 | PC4 |
|
PC7 | PC6 |
|
AGND | AD0 |
|
DA1 | DA0 |
|
PD1 | PD0 |
|
PD3 | PD2 |
|
PD5 | PD4 |
|
PD7 | PD6 |
|
GND | GND |
|
485+ | 485– |
|
VCC | VCC |
|
SM1 | SM0 | Battery |
STAT | IOBEN | |
VBAT | GND |
|
GND | /RST |
|
|
| J4 |
| VCC | GND |
| PA1 | PA0 |
| PA3 | PA2 |
| PA5 | PA4 |
| PA7 | PA6 |
| GND | GND |
| PB1 | PB0 |
| PB3 | PB2 |
| PB5 | PB4 |
| PB7 | PB6 |
| PCLK | WDO |
| PE7 | GND |
| PE5 | PE6 |
C27 | PE3 | PE4 |
GND | PE0 | |
D24 | PE1 | PE2 |
HV1 | HV0 | |
| HV3 | HV2 |
| +RAW | K |
| VCC | GND |
R55
R56
D21
Figure 8. Changing HV3 to a Sinking Output
3.2.3 Bidirectional I/O
The Jackrabbit has 14
20 | Jackrabbit (BL1800) |