M24LR64E-R datasheet(29/140 Pages) STMICROELECTRONICS

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M24LR64E-R

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Vout sink current configuration

The sink current level is chosen by programming EH_cfg1 and EH_cfg0 into the

Configuration byte (see Table 14).

The minimum power level required on AC0-AC1 RF input PAC0-AC1_min, the delivered

voltage Vout, as well as the maximum current consumption Isink_max on the Vout pin

corresponding to the <EH_cfg1,EH_cfg0> bit values are described in Table 126.

●

Energy harvesting enable control

Delivery of Energy harvesting analog output voltage on the Vout pin depends on the value of

the EH_enable bit of the volatile Control register (see Table 15).

–

When set to 1, the EH_enable bit enables the Energy harvesting mode, meaning

that the Vout analog output signal is delivered when the PAC0-AC1_min and Isink_max

conditions corresponding to the chosen sink current configuration bit are met (see

Table 126).

–

When set to 0, the EH_enable bit disables the Energy harvesting mode and the

analog output Vout remains in High-Z state.

●

Energy harvesting default mode control

At power-up, in I²C or RF mode, the EH_enable bit is updated according to the value of the

EH_mode bit stored in the non-volatile Configuration byte (see Table 16). In other words, the

EH_mode bit is used to configure whether the Energy harvesting mode is enabled or not by

default.

Table 14.

Configuration byte

I2C byte address Bit 7 Bit 6 Bit 5 Bit 4

Bit 3

Bit 2

BIT 1

BIT 0

E2=1

2320

X(1)

Bit 7 to bit 4 are don’t care bits.

X(1)

RF WIP/BUSY

EH_mode EH_cfg1 EH_cfg0

Table 15.

Control register

I2C byte address

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

BIT 1

BIT 0

E2=1

2336

0(1)

Bit 7 to bit 1 are read-only bits.

0(1)

FIELD_ON(1)

EH_enable

Table 16.

EH_enable bit value after power-up

EH_mode value

EH_enable after power-up

Energy harvesting

after power-up

enabled

disabled

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