HD6417320 RENESAS [Renesas Technology Corp], HD6417320 Datasheet - Page 1369

• Manufacturer Part Number: HD6417320
• Description: Renesas 32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7700 Series
• Manufacturer: RENESAS [Renesas Technology Corp]

Table 38.2 Recommended Timing in Power-On
Note:
The time over which the internal state is undefined means the time taken to reach Vcc (min.).
The pin states become defined when V
reached. The period of power-on reset (RESETP) is, however, normally accepted as meaning the
time taken for oscillation to become stable (when using the on-chip oscillator) after Vcc (min.) is
reached.
Ensure that the period over which the internal state is undefined is less than or equal to 100 ms.
• Power-off order
Item
Time difference between the power-on of (V
V
V
Time over which the internal state is undefined
CC
CC
Q_RTC, AV
_RTC) levels
 In the reverse order of powering-on, first turn off the 1.5 V power, then turn off the
 Pin states are undefined while only the 1.5 V power is off. The system design must ensure
3.3 V/1.8 V power within 10 ms. This interval should be as short as possible. The system
design must ensure that the states of pins or undefined period of an internal state do not
cause erroneous system operation.
that these undefined states do not cause erroneous system operation.
*
The table shown above is recommended values, so they represent guidelines rather
than strict requirements.
Vcc, Vcc_PLL1, Vcc_PLL2, Vcc_RTC: 1.5 V power
CC
GND
, AV
CC
_USB) and (V
VccQ1: 1.8 V/3.3 V power
VccQ, VccQ_RTC, AVcc, AVcc_USB: 3.3 V power
Normal operation period
CC
V
CC
, V
CC
/2 level voltage
Q, V
CC
_PLL1, V
CC
CC
Q, V
Q1, V
CC
Q1,
CC
CC
_PLL2,
Q_RTC, AV
Operation stopped
Rev. 3.00 Jan. 18, 2008 Page 1307 of 1458
Symbol
t
t
PWU
UNC
Section 38
CC
t
PWD
, and AV
Maximum Value
1
100
Electrical Characteristics
CC
_USB (min.) are
REJ09B0033-0300
Unit
ms
ms