UPD78F1502AGK-GAK-AX Datasheet, PDF (844/1031 Pages) Renesas Technology Corp – 16-Bit Single-Chip Microcontrollers

78K0R/Lx3
CHAPTER 25 REGULATOR
Cautions 3. In low-power consumption mode, use the regulator with fCLK fixed to 1 MHz when executing
self programming.
4. A wait is required to change the operation speed mode control register (OSMC) after
changing the RMC register. Wait for 2 ms by software when setting to low-power
consumption mode and 10 μs when setting to normal power mode, as described in the
procedure shown below.
• When setting to low-power consumption mode
<1> Select a frequency of 1 MHz for fCLK.
<2> Set RMC to 5AH (set the regulator to low-power consumption mode).
<3> Wait for 2 ms.
<4> Set FLPC and FSEL of OSMC to 1 and 0, respectively.
• When setting to normal power mode
<1> Set RMC to 00H (set the regulator to normal power mode).
<2> Wait for 10 μs.
<3> Change FLPC and FSEL of OSMC.
<4> Change the fCLK frequency.
Table 25-1. Regulator Output Voltage Conditions
Mode
Low-power
consumption mode
Output Voltage
1.8 V
Normal power mode 2.4 V
Condition
In STOP mode (except during OCD mode)
When both the high-speed system clock (fMX), the high-speed internal
oscillation clock (fIH), and the 20 MHz internal high-speed oscillation clock
(fIH20) are stopped during CPU operation with the subsystem clock (fSUB)
When both the high-speed system clock (fMX), the high-speed internal
oscillation clock (fIH), and the 20 MHz internal high-speed oscillation clock
(fIH20) are stopped during the HALT mode when the CPU operation with the
subsystem clock (fSUB) has been set
Other than above
R01UH0004EJ0501 Rev.5.01
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Jun 20, 2011