SH7211 Datasheet, PDF (1209/1228 Pages) Renesas Technology Corp – 32-Bit RISC Microcomputer SuperHTM RISC engine Family

Item
Page
26.3 Register States in 1078
Each Operating Mode
27.2 Power-on/Power- 1082
off Sequence
Table 27.2
Recommended Time for
Power-on/Power-off
Sequence
Figure 27.2 Power-on 1083
Sequence
Revision (See Manual for Details)
Table amended
Module
Name
PFC
Register
Abbreviation
PACRL1
PBIORH
PBCRL1
PDIOR
PDCRL1
PFCRL1
Power-On
Reset
Initialized
Initialized
Initialized
Initialized
Initialized
Initialized
Manual
Reset
Retained
Retained
Retained
Retained
Retained
Retained
Software
Standby
Retained
Retained
Retained
Retained
Retained
Retained
Module
Standby
⎯
⎯
⎯
⎯
⎯
⎯
Sleep
Retained
Retained
Retained
Retained
Retained
Retained
Note amended
Note: V_CCQ ≥ V_CC = PLLV_CC is recommended. Either V_CCQ, V_CC,
or PLLV_CC power supply can be turned on or off first,
though, an undefined period appears until V_CC rises to
the Min. voltage or after V_CC passes the Min. voltage.
During these periods, pin or internal states become
undefined. Design the system so that such undefined
states do not cause a system malfunction. To avoid an
increase in the current consumption during the
undefined period at power-on, it is recommended that
V_CCQ, V_CC, and PLLV_CC be turned on simultaneously.
This undefined period can be eliminated by turning on
the power supplies in the order shown in figure 27.2.
Figure added
Rev. 2.00 May. 08, 2008 Page 1185 of 1200
REJ09B0344-0200