M16C65 Datasheet, PDF (182/829 Pages) Renesas Technology Corp – RENESAS MCU M16C FAMILY / M16C/60

Under development
M16C/65 Group
Preliminary Specification
This is a preliminary specification and is subject to change.
9. Power Control
9.4.2 Reading Flash Memory
Consumption current while reading the flash memory can be reduced by using bits FMR22 and FMR23.
9.4.2.1 Slow Read Mode
Slow read mode can be used when f(BCLK) is 5 MHz or below. Figure 9.3 shows Setting and
Canceling of Slow Read Mode.
Slow read mode
Set the CPU clock less than or equal to 5 MHz.
Set the FMR22 bit to 0, and then to 1 (enabled).
Setting
Procedure
Processing in slow read mode
Set the FMR22 bit to 0.
Restore the CPU clock.
Completed
Figure 9.3 Setting and Canceling of Slow Read Mode
Canceling
Procedure
REJ09B0484-0030 Rev.0.30 Sep 09, 2008
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