SH7606 Datasheet, PDF (467/532 Pages) Renesas Technology Corp – 32-Bit RISC Microcomputer SuperH™ RISC engine Family / SH7606 Series

Section 19 Electrical Characteristics
• Power-off order
 In the reverse order of power-on, first turn off the 1.5-V system power, then turn off the
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.
 Pin states are undefined while only the 1.5-V system power is turned off. The system
design must ensure that these undefined states do not cause erroneous system operation.
V_ccQ : 3.3-V system power
V_cc : 1.5-V system power
GND
V_cc/2
Normal operation period
t_PWD
Operation stopped
Table 19.3 Recommended Timing in Power-Off
Item
Symbol Maximum Value Unit
Time difference between turning off V_CCQ and V_CC
t_PWD
10
ms
Note: * The table shown above is recommended values, so they represent guidelines rather
than strict requirements.
Rev. 4.00 Sep. 13, 2007 Page 441 of 502
REJ09B0239-0400