UPD77018A NEC, UPD77018A Datasheet - Page 36

• Manufacturer Part Number: UPD77018A
• Description: 16 bits/ Fixed-point Digital Signal Processor
• Manufacturer: NEC

36
Reset, Interrupt
Required Timing Condition
Notes 1.
RESET low level width
RESET recovery time
INT1-INT4 low level width
INT1-INT4 recovery time
2.
Parameters
The t
becomes stable. The t
t
Note that, during HALT mode, t
w(RL)
w(RL)
is measured after the point that power supply voltage reaches to 2.7V.
indicates a time between crystal resonator or oscillator starts to provide clock and PLL
Symbol
t
t
t
t
W(RL)
rec(R)
W(INTL)
rec(INT)
w(RL)
depends on the rating of crystal resonator or oscillator. At power on, the
Crystal resonator is input,
at power on or STOP mode
External clock is input,
at power on or STOP mode
Active mode or HALT mode
cC
is extended to 8 times as long as that of Active mode.
Conditions
100
4t
3t
3
cC
cC
MIN.
Note 1
4t
3t
Note 1
Note 2
Note 2
cC
cC
TYP.
PD77018A, 77019
MAX.
Unit
ms
ns
ns
ns
ns
s