Table of Contents
Advertisement
QB-RL78G1F In-Circuit Emulator
4.1 Cautions Regarding Differences Between Target Device and QB-RL78G1F
When debugging is performed by connecting the QB-RL78G1F to the target system, the QB-RL78G1F emulates the
target device as if it operates in the target system. However, the target device and the QB-RL78G1F operate differently
in the following ways. Consequently, the target device should be used for final evaluation before launching mass
production, and the customer is to be responsible for judging the appropriateness of applying the QB-RL78G1F.
- On-chip debug function
The on-chip debug function cannot be emulated.
- Oscillator
The QB-RL78G1F does not support clock input by an oscillator in the target system. Consequently, the
operation clock frequency when the target device is mounted in the target system may differ from the operation
clock frequency when the QB-RL78G1F is connected.
- Pin characteristics
The pin characteristics of the QB-RL78G1F slightly differ when the target device is mounted to the target system,
because a connector, adapter, emulation probe, and circuit board exist between the QB-RL78G1F and the target
system. In particular, note that the A/D converter conversion results are commonly-affected.
- Current consumption
The current consumption of the QB-RL78G1F differs from that of the target device.
The maximum current consumption is around 250 mA. In the same manner, the current consumption in standby
mode also differs from that of the target device.
- Change the positive reference voltage on the A/D converter
When change the positive reference voltage, after setting ADREFP1 and ADREFP0,
emulator is different from that of the target device.
ADM2 register ( value after change )
ADREFP1
R20UT3352EJ0100 Rev.1.00
Jan 30, 2015
CHAPTER 4
Table 4-1 Target devices and stabilization wait time of QB-RL78G1F
ADREFP0
1
0
0
0
0
1
CHAPTER 4
CAUTIONS
stabilization wait time
Target devices
QB-RL78G1F
RL78/G1F
1μs
200μs
No
6μs
No
6μs
CAUTIONS
stabilization wait time of
Page 33 of 41
Advertisement
Table of Contents
