M37702E6BFS Renesas Electronics America, M37702E6BFS Datasheet - Page 266

• Manufacturer Part Number: M37702E6BFS
• Description: EPROM MCU/8BIT CMOS EMULATION CH
• Manufacturer: Renesas Electronics America

Specifications of M37702E6BFS

• Accessory Type: Emulator EPROM MCU
• For Use With/related Products: 7702
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

WAIT MODE
11.2 Operation description
11–4
11.2.1 Termination by interrupt request occurrence
The following interrupts are used to terminate Wait mode.
The occurrence of the watchdog timer interrupt request also terminates Wait mode.
•INT
•Timer Ai interrupt (i = 0 to 4)
•Timer Bi interrupt (i = 0 to 2)
•UARTi transmit interrupt (i = 0, 1)
•UARTi receive interrupt (i = 0, 1)
•A-D converter interrupt
Before executing the WIT instruction, enable interrupts used to terminate Wait mode.
In addition, the interrupt priority level of the interrupt used to terminate Wait mode must be higher than the
processor interrupt priority level (IPL) of the routine where the WIT instruction is executed. When the above
multiple interrupts are enabled, Wait mode is terminated by the first interrupt request.
11.2.2 Termination by hardware reset
The CPU and the SFR area are initialized in the same way as a system reset. However, the internal RAM
area retains the same contents as that before executing the WIT instruction. The termination sequence is
the same as the internal processing sequence which is performed after a reset.
To determine whether a hardware reset was performed to terminate Wait mode or a system reset was
performed, use software after a reset.
Refer to “Chapter 13. RESET” for details about a reset.
____
Note : Refer to “Chapter 4. INTERRUPTS” and each functional description about interrupts.
When an interrupt request occurs, supply of clock
The interrupt request which occurs in
i
interrupt (i = 0 to 2)
7702/7703 Group User’s Manual
is accepted.
CPU
and
starts.