IE-789234-NS-EM1 Renesas Electronics America, IE-789234-NS-EM1 Datasheet - Page 36

• Manufacturer Part Number: IE-789234-NS-EM1
• Description: BD EMULATOR 78K0S KX1 UPD789234
• Manufacturer: Renesas Electronics America

Specifications of IE-789234-NS-EM1

• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

34
• RESET pin control
• Setting of oscillation stabilization time for when power is applied or reset is input
Caution
Operations related to reset control flag register and external reset input
SW3-7 Setting
• When P34/RESET is used as P34:
• When P34/RESET is used as RESET pin:
0 side
0 side
1 side
1 side
The reset control flag register can only be cleared by using SW4.
(1)
(2)
(3)
(4)
This option is valid only when a clock other than high-speed internal oscillation clock is
selected as the system clock source. When a high-speed internal oscillation clock is selected,
it is not necessary to insert wait time.
<2>
When the reset mask is disabled in the Configuration dialog box of the debugger then the program is
executed, the reset control flag register is cleared and the CPU is reset by inputting an external reset.
When the reset mask is enabled in the Configuration dialog box of the debugger then the program is
executed, the reset control flag register is cleared by inputting an external reset.
When an external reset is input while the program has stopped, the reset control flag register is
cleared.
When masking the pins for external reset input:
<1> Set SW3-4 to the 0 side, i.e. to “Use RESET pin as dedicated input port (P34)”.
SW3-4 Setting
1 side
0 side
SW3-6 Setting
Execute the program by enabling the reset mask in the Configuration dialog box of the
integrated debugger.
0 side
1 side
0 side
1 side
Table 3-10. Setting of Oscillation Stabilization Time
DEFOSTS1
RMCE
Table 3-9. RESET Pin Control
1
0
0
0
1
1
CHAPTER 3
User’s Manual U17381EJ6V0UM
Used as RESET pin
Use RESET pin as dedicated input port (P34)
DEFOSTS0
INSTALLATION
0
1
0
1
Setting of Oscillation Stabilization Time for When
2
2
2
2
RESET Pin Control
10
12
15
17
/fx (102.4
/fx (409.6
/fx (3.27 ms)
/fx (13.1 ms)
Power Is Applied or Reset Is Input
µ
µ
s)
s)