Renesas SH7781 用户手册

Appendix 

Rev.1.00  Jan. 10, 2008  Page 1653 of 1658 

REJ09B0261-0100 

 

The order of the power supply between the 1.0V series power supply (VDD10: VDD and VDD-
PLL1 to 2 and VDDA-PLL1), the 1.8V series power supply (VDD18: VDD-DDR) and the 3.3V 
series power supply (VDD33: VDDQ and VDDQ-PLL1 to 2 and VDDQ-TD*) is as follows. 

Note:  *  If VDDQ-TD is connected to VDDQ. 

•  Turning On Power Supply 

There is no restriction for the order of the power supply between each power supply series 
(VDD10, VDD18, VDD33). Within 300 ms after turning on one power supply series, turn on 
all the other power supply series. 

•  Turning Off Power Supply 

There is no restriction for the order of the power supply between each power supply series. 

(VDD10, VDD18, VDD33). Within 300 ms after turning off the one power supply series, turn 
off all the other power supply series. 

 

300 > t > or = 0

[ms]

0.1 

× V**

V** min

0.9 

× V**

0.2 [V]

V**:
VDD10, VDD18 (transition from DDR power supply backup), VDD33

V**:
VDD10, VDD18 (transition from DDR power supply backup), VDD33

300 > t > or = 0

[ms]

VDD10: VDD, VDD-PLL1 to 2, VDDA-PLL1  
VDD18: VDD-DDR (except DDR2-SDRAM backup to turning on)
VDD33: VDDQ, VDDQ-PLL1 to 2, VDDQ-TD*

Note:  * If VDDQ-TD is connected to VDDQ.

Turning on

Turning off