NEC PD78214 - Manual (Page 407)

378
µ
PD78214 Sub-Series
Fig. 14-2 Standby Function Block
System clock oscillator
Frequency divider
Oscillation settling time counter (16 bits)
fxx or fx
f CLK
STP flip-flop 1
Q Q
S R
STP flip-flop 2
Q Q
S R
HL
T flip-flop
Q Q
S R
D CK
Q
PR
××
ISM
Macro service request
Resets flip-flop Sets STOP bit
Sets HL
T bit
CPU CLK Peripheral CLK RAM protect
Interrupt control
Interrupt request
Macro service request
××
ISM
EI
Overflow
Reset
NMI
RESET
1 2
Oscillation stops
CLK