Start-Up Timing - Hitachi H8/3937 Series Hardware Manual

12.6.2

Start-up Timing

The following diagram and table describe the timing specifications of the FLEX decoder when
power is applied.
VDD
Oscillator
RESET
t
RESET
READY
Table 12-35 Start-up Timing (V
Characteristic
Oscillator Start-up Time
RESET Hold Time
RESET High to READY
Low
Notes: 1. The specifications given in this data sheet indicate the minimum performance level of all
manufacturers of the FLEX decoder. Individual manufacturers may have better
performance than indicated.
2. T is one period of the ø
time can impact the availability and period of clock strobes. This can affect the actual
RESET high to READY low timing.
t
START
Figure 12-14 Start-up Timing
= 1.8 V to 3.6 V, T
DD
Conditions Symbol
t
START
t
RESET
t
RHRL
clock source. Note that from power-up, the oscillator start-up
DEC
t
RHRL
= -20ºC to 75ºC)
A
1 1
Min* Max *
5
200
76,800 76,800
Unit
sec
ns
2
T*
389