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Tool Reset Specifications
A tool reset is a hardware reset by the adapter to reset the entire system of the MCU (including
the BDSU module) on the user system.
When both of the adapter power and MCU's user power are turned on, the tool reset is canceled
automatically to enable the MCU to be evaluated.
The following shows how to generate a tool reset and how long it remains in effect.
Tool reset generation methods and reset "L" pulse width
1) Set the MCU user power from OFF to ON (power-on reset).
2) Set the adapter power from OFF to ON (by unplugging and plugging the USB
If the user system and adapter cause an uncontrollable error but the system cannot be recovered
by tool reset generation method 1), execute tool reset generation method 2).
Adapter Interface Specifications
Table 3 is a pinout of the adapter interface connector mounted on the user system. Table 4 lists
recommended connectors. Figure 6 shows the connector pins.
When the adapter interface connector is installed on the user system, connect the adapter
interface connector to the MCU according to the following specifications.
Connector
pin No.
1
2
3
4
5
6
7
8
9
10
*: "BGMA" in the "Input/output" column in the table indicates the BGM adapter.
6
The reset remains in effect for about 16 to 70 ms after the MCU user power is
supplied.
cable).
The reset remain in effect for about 32 to 140 ms after the adapter power is
supplied.
Table 3 Adapter Interface Connector Pinout
Connector
pin name
VCC
BGMA
GND
BRSTX
BGMA
BDBMX
BGMA
BSOUT
BGMA
BEXCK
BGMA
BSIN
BGMA
N.C
GND
N.C
Input/output
Connected to the MCU's Vcc pin.
MCU
Connected to the MCU's Vss pin.
MCU
MCU
MCU
MCU
MCU
Not connected
Connected to the MCU's Vss pin.
Not connected
Remarks
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