Intel 80C196NU ユーザーズマニュアル
11-11
MINIMUM HARDWARE CONSIDERATIONS
11.6.2 Issuing the Reset (RST) Instruction
The RST instruction (opcode FFH) resets the device by pulling RESET# low for 16 state times.
It also clears the processor status word (PSW), sets the extended and master program counters
(EPC/PC) to FF2080H, and resets the special function registers (SFRs). See Table C-2 on page
C-2 for the reset values of the SFRs.
It also clears the processor status word (PSW), sets the extended and master program counters
(EPC/PC) to FF2080H, and resets the special function registers (SFRs). See Table C-2 on page
C-2 for the reset values of the SFRs.
11.6.3 Issuing an Illegal IDLPD Key Operand
The device resets itself if an illegal key operand is used with the idle/powerdown (IDLPD) com-
mand. The legal keys are “1” for idle mode, “2” for powerdown mode, and “3” for standby mode
(NU only). If any other value is used, the device executes a reset sequence. (See Appendix A for
a description of the IDLPD command.)
mand. The legal keys are “1” for idle mode, “2” for powerdown mode, and “3” for standby mode
(NU only). If any other value is used, the device executes a reset sequence. (See Appendix A for
a description of the IDLPD command.)