Fig. 38 State Transition; Fig. 39 Set Source And Clear Source Of The P Flag; Fig. 40 Start Condition Identified Example Using The Snzp Instruction - Renesas 4513 User Manual

(Stabilizing time a )
Reset
Stabilizing time a

Fig. 38 State transition

POF instruction
Reset input or
voltage drop detection
circuit output
Set source • • • • • • •
Clear source
• • • • • •

Fig. 39 Set source and clear source of the P flag

A
f(X ) oscillation
IN
: Time required to stabilize the f(X
Power down flag P
S Q
R
POF instruction is executed
Reset input
4513/4514 Group User's Manual
FUNCTION BLOCK OPERATIONS
POF instruction
is executed
Return input
(Stabilizing time a )
) oscillation is automatically generated by hardware.
IN
Software start
P = "1"
?
No
Cold start
Fig. 40 Start condition identified example using the SNZP in-
struction
HARDWARE
B
f(X ) stop
IN
(RAM back-up
mode)
Yes
Warm start
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