NEC PD78P214 Manuale Utente
393
Chapter 15 Reset Function
15
Fig. 15-3 Timing Charts for Reset Operation
(a) For
µPD78213
(b) For
µPD78214
15.2 NOTE
When resetting the system at power-on, do not set the RESET signal high immediately after the supply voltage
reaches the specified level. Keep the signal low until oscillation has settled.
reaches the specified level. Keep the signal low until oscillation has settled.
★
Reset period
Hi-Z
Hi-Z
Hi-Z
Hi-Z
Hi-Z
Hi-Z
Address
(output)
Program
(input)
RESET
(input)
ASTB (output)
A8-A19
(output)
AD0-AD7
RD (output)
WR output
Other I/O ports
Instruction execution period after reset
Reset period
Hi-Z
Hi-Z
Hi-Z
RESET
(input)
ASTB (output)
P60-P63
(output)
Other I/O ports
Instruction execution period after reset