r5f21368sdfp Renesas Electronics Corporation., r5f21368sdfp Datasheet - Page 156

• Manufacturer Part Number: r5f21368sdfp
• Description: Renesas Mcu R8c Family / R8c/3xt-a Series
• Manufacturer: Renesas Electronics Corporation.

Under development
R8C/36T-A Group
R01UH0240EJ0001 Rev.0.01
Apr 28, 2011
Figure 10.7
FMR27: Bit in FMR2 register
Notes:
1. To set the FMR27 bit to 1 (low-current-consumption read mode enabled), first write 0 and then write 1
2. In low-current-consumption read mode, set the FMR01 bit in the FMR0 register to 0 (CPU rewrite mode
immediately.
Interrupts and DTC activation must be disabled between writing 0 and writing 1.
disabled).
When entering wait mode or stop mode, set the FMR27 bit to 0 (low-current-consumption read mode disabled)
before entering. Do not enter wait mode or stop mode while the FMR27 bit is 1.
Preliminary document
Specifications in this document are tentative and subject to change.
Procedure for Using Flash Memory Low-Current-Consumption Read Mode
Step (1)
Step (2)
Step (3)
Step (4)
Step (5)
Step (6)
Step (7)
Step (8)
(low-current-consumption read mode disabled)
(low-current-consumption read mode enabled)
Enter low-current-consumption read mode
Stop the high-speed on-chip oscillator clock
Start the high-speed on-chip oscillator clock
(Wait until the high-speed on-chip oscillator
Enter high-speed on-chip oscillator mode
low-current-consumption read mode
low-speed on-chip oscillator mode
Handling procedure for enabling
Enter low-speed clock mode or
clock oscillation stabilizes)
by FMR27 bit
FMR27  0
FMR27  1
(2)
(1)
10. Power Control
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