beautypg.com

NEC PD75402A User Manual

Page 155

background image

144

CHAPTER 7. STANDBY FUNCTION

Fig. 7-1 Standby Mode Reset Operation

(a)

STOP mode reset by RESET input

(b) HALT mode reset by RESET input

HALT
Instruction

RESET
Input

Operating
Mode

Clock

Oscillation

HALT Mode

Operating Mode

STOP
Instruction

RESET
Input

Operating
Mode

Clock

Oscillation

STOP Mode

Oscillation
Stopped

HALT Mode

Oscillation

Operating
Mode

Oscillation
Stabilization Time

(c)

HALT mode reset by interrupt generation

HALT
Instruction

Operating
Mode

HALT Mode

Operating Mode

Oscillation

Standby
Rlease
Signal

2 Instructions
Execution

Clock

Remarks

The broken line is for the case when an interrupt request that reset the HALT mode was accepted (IME

= 1).

This manual is related to the following products: