On my C4051 projects I always tied a DS1833-10 to the reset pin of the MCU for a good power up reset.
I am trying to migrate to a LP4052 and built a small test board with a 10 pin header to program the MCU with a mikroProg module.
I wrote some simple code that works with the C4051 to toggle a port pin on and off (P1.1).
I set the LP4052 for quasi bidirectional port pin configuration, internal 12MHz R/C clock.
The code assembled and loaded into the LP4052 with no errors but the LP4052 won't wake up.
I then set the fuse to send the system clock out of P3.7 to see if the MCU was running, no clock out was seen with my scope.
On the LP4052 I simply tied a 10K resistor from the reset pin to Vcc.
Should reset be tied to ground instead or is there some R/C value I need to add or should I leave the pin floating to get a proper power up reset?
I am trying to migrate to a LP4052 and built a small test board with a 10 pin header to program the MCU with a mikroProg module.
I wrote some simple code that works with the C4051 to toggle a port pin on and off (P1.1).
I set the LP4052 for quasi bidirectional port pin configuration, internal 12MHz R/C clock.
The code assembled and loaded into the LP4052 with no errors but the LP4052 won't wake up.
I then set the fuse to send the system clock out of P3.7 to see if the MCU was running, no clock out was seen with my scope.
On the LP4052 I simply tied a 10K resistor from the reset pin to Vcc.
Should reset be tied to ground instead or is there some R/C value I need to add or should I leave the pin floating to get a proper power up reset?