CHAPTER 4: INSTRUCTION SET

 

 

 

SLP

Set CPU to SLEEP mode

2 cycles

Function: Sleep

Sets the CPU to SLEEP status.

The CPU and the peripheral circuits including the oscillation circuit stops operating, thus the power consumption is substantially reduced.

An interrupt from outside the MCU causes it to return from SLEEP status to the normal program execution status.

Code:

Mnemonic

 

MSB

 

 

 

 

 

 

 

 

 

 

LSB

 

 

SLP

 

 

1

 

1

1

1

1

1

1

1

1

1

1

0

 

1

1FFDH

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Flags:

E

 

I

C

 

Z

 

 

 

 

 

 

 

 

 

 

 

 

 

 

↓

 

–

–

 

–

 

 

 

 

 

 

 

 

 

 

 

 

 

SRL %r

 

Shift right r reg. logical

1 cycle

Function: 0

 

 

 

 

 

 

 

C r

 

3

2

1

0

 

 

 

 

 

Shifts the content of the r register (A or B) to the right for 1 bit. Bit 0 of the r register moves to the C flag and bit 3 goes "0".

Code:

Mnemonic

 

 

MSB

 

 

 

 

 

 

 

 

 

 

LSB

 

 

SRL %A

 

 

 

1

 

0

0

0

0

1

1

1

1

0

0

0

 

1

10F1H

 

SRL %B

 

 

 

1

 

0

0

0

0

1

1

1

1

0

1

0

 

1

10F5H

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Flags:

E

 

I

 

C

 

Z

 

 

 

 

 

 

 

 

 

 

 

 

 

 

↓

 

–

 

↕

 

 

↕

 

 

 

 

 

 

 

 

 

 

 

 

 

Mode:

Register direct

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Extended addressing: Invalid

 

 

 

 

 

 

 

 

 

 

 

 

S1C63000 CORE CPU MANUAL

EPSON

133