Samsung S3C9228/P9228, 8-Bit CMOS Microcontroller user manual Stop Stop Operation

SAM88RI INSTRUCTION SET S3C9228/P9228

STOP — Stop Operation

STOP

Operation:

The STOP instruction stops both the CPU clock and system clock and causes the microcontroller to enter Stop mode. During Stop mode, the contents of on-chip CPU registers, peripheral registers, and I/O port control and data registers are retained. Stop mode can be released by an external reset operation or External interrupt input. For the reset operation, the RESET pin must be held to Low level until the required oscillation stabilization interval has elapsed.

Flags: No flags are affected.

Format:

Bytes Cycles Opcode	Addr Mode
(Hex)	dst	src

opc

1 4 7F – –

Example:	The statement
	STOP
	halts all microcontroller operations.

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