Z51F0410 Datasheet, PDF (146/184 Pages) Zilog, Inc. – Z8051 Series 8-Bit Microcontrollers

Z51F0410
Product Specification
t < TRNC
t < TRNC
A
t > TRNC
t > TRNC
t > TRNC
A’
6.5 Power ON RESET
Figure 6.2 Reset noise canceller time diagram
When rising device power, the POR (Power ON Reset) have a function to reset the device. If using
POR, it executes the device RESET function instead of the RESET IC or the RESET circuits. And
External RESET PIN is able to be used as Normal I/O pin.
Fast VDD Rise Time
VDD
nPOR
(Internal Signal)
Internal RESETb
Oscillation
BIT Starts
BIT Overflows
Figure 6.3 Fast VDD rising time
Slow VDD Rise Time, max 0.02v/ms
VDD
nPOR
(Internal Signal)
Internal RESETb
VPOR=1.4V (Typ)
BIT Starts
BIT Overflows
Oscillation
Figure 6.4 Internal RESET Release Timing On Power-Up
PS029502-0212
PRELIMINARY
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