SH7751 Datasheet, PDF (1216/1224 Pages) Renesas Technology Corp – 32-Bit RISC Microcomputer

G. Power-On and Power-Off Procedures
G.3 Common Stipulations for Power-On and Power-Off
1. Always ensure that V_DDQ = V_DD-CPG = V_DD-RTC = V . _DD-PLL1/2
Refer to 9.9.5, Hardware Standby Mode Timing, regarding V_DD-RTC in hardware standby mode.
2. Ensure that –0.3 V < V_DD < V_DDQ + 0.3 V.
3. Ensure that V_SS = V_SSQ = V_SS-PLL1/2 = V_SS-CPG = V_SS-RTC = GND (0 V).
The product may be damaged if conditions 1., 2., and 3. above are not satisfied.
[V]
Power-on
Power supply
V_DDQ
Power-off
Power supply
V_DD
0.3 V (max)
GND
0.3 V (max)
Figure G.2 Power-On Procedure 1
[V]
V_DDQ (min)
2.0 V
V_DD (min)
1.2 V
1.0 V
0.5 V
GND
Power-on
Power supply
V_DDQ
Power supply
V_DD
Power-off
tpwu
tpwu < 100 ms
(max)
Unstable period
at power-on: t_pwu
Normal operation period
tpwd
tpwd < 150 ms (max)
Unstable period
at power-off: t_pwd
Figure G.3 Power-On Procedure 2
Rev.4.00 Oct. 10, 2008 Page 1118 of 1122
REJ09B0370-0400
[t]
[t]