HD6417641 RENESAS [Renesas Technology Corp], HD6417641 Datasheet - Page 958

• Manufacturer Part Number: HD6417641
• Manufacturer: RENESAS [Renesas Technology Corp]

Section 25 Electrical Characteristics
25.1.1
Supply the power so that VccQ (3.3-V system) and Vcc (1.8-V system) are supplied
simultaneously or Vcc is supplied after VccQ is supplied.
Recommended values for the power-on procedure are shown below.
Rev. 4.00 Sep. 14, 2005 Page 908 of 982
REJ09B0023-0400
GND
Power-On Sequence
The time at which VccQ
reaches V
Unsettling opration
CC
t
pwu
Q (min.)
t
unc
Clock starts oscillation
The time at which Vcc
reaches V
V
Figure 25.1 Power-On Sequence
CC
Q (min.) voltage
V
V
V
CC
CC
CC
CC
Q: 3.3 V-system power supply
: 1.8 V-system power supply
/2 level voltage
Oscillation settling time (10 ms)
Power-on reset released and then
normal operation started
V
(min.)
CC
(min.) voltage
Normal operation
Operation stopped
t
pwd