HD6417618 RENESAS [Renesas Technology Corp], HD6417618 Datasheet - Page 573

• Manufacturer Part Number: HD6417618
• Description: 32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7618 Series
• Manufacturer: RENESAS [Renesas Technology Corp]

The time over which the internal state is undefined means the time taken to reach V
The pin states become settled when V
reset (RES) is normally accepted is after V
(when using the on-chip oscillator).
Ensure that the time over which the internal state is undefined is less than or equal to 100 ms.
• Power-off order
Table 21.3 Recommended Timing in Power-Off
Note:
Item
Time difference between turning off V
 In the reverse order of power-on, first turn off the 1.5-V system power, then turn off the
 Pin states are undefined while only the 1.5-V system power is turned off. The system
3.3-V system power within 10 ms. This time 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.
design must ensure 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.
GND
V
V
cc
cc
Q : 3.3-V system power
: 1.5-V system power
Normal operation period
CC
CC
Q and V
Q reached the V
CC
reaches V
V
cc
CC
/2
CC
CC
Operation stopped
(min.) and oscillation becomes stable
Q (min.). The timing when a power-on
Symbol
t
PWD
Rev. 6.00 Jun. 12, 2007 Page 541 of 610
Section 21 Electrical Characteristics
t
PWD
Maximum Value
10
REJ09B0131-0600
CC
(min.).
Unit
ms