ML7406 datasheet(23/104 Pages) LAPIS

23 / 104 page

FEDL7406-02

ML7406

23/104

○SLEEP setting

DEEP_Sleep mode: Powers for all blocks except IO pins are turned off.

Sleep mode: Main regulator and 26MHz oscillation circuits are tured off. But sub-regulator is turned-on.

The following registers can be programmed to control SLEEP state.

Function

Control bit name

Power control

PDN_EN([SLEEP/WU_SET: B0 0x2D(1)])

Wake-up setting

WAKEUP_EN([SLEEP/WU_SET: B0 0x2D(4)])

Wake-up timer clock source setting

WUT_CLK_SOURCE([SLEEP/WU_SET: B0 0x2D(2)])

Internal RC oscillator control

RC32K_EN ([CLK_SET2: B0 0x03(3)])

Setting method and internal state for DEEP_SLEEP and various SLEEP modes are as follows:

SLEEP mode

Setting method

DEEP_SLEEP

RESETN pin=”L”

REGPDIN pin=”H”

OFF

SLEEP1

not supported

SLEEP2

[SLEEP/WU_SET: B0 0x2D(4-0)] =

0b0_1001 (*2)

[CLK_SET2: B0 0x03(3)] = 0b0

(default)

OFF

OFF(*1)

OFF

SLEEP3

[SLEEP/WU_SET: B0 0x2D(4-0)] =

0b1_1001 (*2)

[CLK_SET2: B0 0x03(3)] = 0b0

(default)

OFF

SLEEP4

[SLEEP/WU_SET: B0 0x2D(4-0)] =

0b1_1101 (*2)

[CLK_SET2: B0 0x03(3)] = 0b1

OFF

(*1) Low speed clock is supplied from EXT_CLK pin.

(*2) Please set proper value to [SLEEP/WU_SET: B0 0x2D(3)].

(Note)

Contents of registers are not kept during DEEP_SLEEP. Contents of registers are kept during SLEEP2,SLEEP3,SLEEP4.

ML7406 Datasheet(PDF) 23 Page - LAPIS Semiconductor Co., Ltd.

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