SH7262/SH7264 Group
Hardware Design Guide
REJ06B0999-0100 Rev. 1.00
Page 33 of 36
Jun. 30, 2010
9.5.4
Pin States after Waking Up from Deep Standby Mode
After waking up the MCU from deep standby mode, pin states are retained until the IOKEEP bit in the DSFR register is
cleared by 0. However, when the EBUSKEEPE bit is set to 0, external memory control pin states are released
immediately after waking up the MCU from deep standby mode.
Table 16 lists external memory control pins to enable the EBUSKEEPE bit setting.
Table 16 External Memory Control Pins to Enable the EBUSKEEPE Bit Setting
Boot Mode 0 (CS0 Space)
Boot Mode 2
(NAND Flash Memory)
Boot Modes 1 and 3
(Serial Flash Memory)
A20 to A1
D15 to D0
CS0#, RD#, CKIO
NAF7 to NAF0
FRE#, FCLE, FALE,
FWE#, FCE#, FRB
RSPCK0, SSL00, MOSI0, MISO0