upd70f3422gj-gae-qs-ax Renesas Electronics Corporation., upd70f3422gj-gae-qs-ax Datasheet - Page 885

• Manufacturer Part Number: upd70f3422gj-gae-qs-ax
• Description: 32-bit Single-chip Microcontroller
• Manufacturer: Renesas Electronics Corporation.

On-Chip Debug Unit
P05/DRST XXXXXXXXX
P05/DRST
RESPOC
RESPOC
OCDM0
OCDM0
RESET
RESET
Figure 28-2
Figure 28-3
XXXXXXXXXXXXXX
28.3.3 N-Wire activation by RESET pin
reset
“0”
“0”
Start with N-Wire activation
The N-Wire interface can also be activated after power up by keeping RESET
active for at least 2 sec after RESPOC release. By this OCDM.OCDM0 is set
to "1", thus the N-Wire interface is enabled.
With this method the user's program does not need to perform
OCDM.OCDM0 = 1.
N-Wire activation by RESET pin
Preliminary User’s Manual U17566EE1V2UM00
normal operation
“1”
reset
Application software
sets OCDM.OCDM0=1
>= 2000ms
Debugger starts
PC = 0
Debug
normal operation
“1”
Debugger starts
PC = 0
debug
Chapter 28
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