CHAPTER 1 OVERVIEW
User’s Manual U16647EJ1V0UM
12
Table 1-2. On-Chip Debug Unit and Debug Function
On-Chip Debug Unit Name
Debug Function
RCU0
(NB85E901)
RCU1
RCU2
(Under Development)
Nx85ET Core
(RCU0 + TEU + TRCU)
Note 1
Internal
ROM/flash
memory security
function
10-byte ID code authentication
Event detection
break function
Break before execution or Access break
×
2 (selectable)
Break before execution
×
2,
Break after execution
×
2,
Access break
×
4
Software break
function
2000 points
0 to 8 points can be assigned to the internal ROM/flash memory area at one time
Note 2
Forced break
function
Provided
Execution
function
Go (free-run), execution from cursor position, restart, step execution
RM, DMM
function
Note 3
Provided
Register
manipulation
function
Provided
Mask function
Not provided
Resolution: 100 ns,
Maximum measurement time: 3 min. 30 sec.
Not provided
Trace function
Not provided
Provided
Note 4
Not provided
Note 5
Notes 1.
The Nx85ET core is a CPU core in which RCU, TEU, and TRCU macros are incorporated.
2.
The number of points depends on the device. This function cannot be used when the flash self-
programming function is used.
3.
RM (RAM Monitor): Function that read the contents of the memory during program execution
DMM (Dynamic Memory Modification): Function that rewrites the contents of the RAM during program
execution
4.
The latest 8 trace conditions are traced.
The trace conditions (branch source, branch destination, write access) can be set.
5.
The trace function of the Nx85ET core is realized by using the trace interface. This emulator does not
feature a trace interface, so the trace function cannot be used.
