ST25DV64K datasheet(59/220 Pages) STMICROELECTRONICS

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ST25DV04K ST25DV16K ST25DV64K

ST25DVxxx specific features

219

5.3

Energy Harvesting (EH)

5.3.1

Energy harvesting registers

Table 23. EH_MODE(1)

Command

Read Configuration (cmd code A0h) @02h

Write Configuration (cmd code A1h) @02h

Type

R always, W if RF configuration security session is open and configuration not

locked

I2C

Address

E2 = 1, 0002h

Type

R always, W if I2C security session is open

Bit

Name

Function

Factory

Value

EH_MODE

0: EH forced after boot

1: EH on demand only

b7-b1

RFU

0000000b

1. Refer to Table 8: System configuration memory map for the EH_MODE register.

Table 24. EH_CTRL_Dyn(1)

Command

Read Dynamic Configuration (cmd code ADh) @02h

Fast Read Dynamic Configuration (cmd code CDh) @02h

Write Dynamic Configuration (cmd code AEh) @02h

Fast Write Dynamic Configuration (cmd code CEh) @02h

Type

b0: R always, W – b1 - b7: RO

I2C

Address

E2 = 0, 2002h

Type

b0: R always, W always

b1-b7: RO

Bit

Name

Function

Factory Value

EH_EN

0: Disable EH feature

1: Enable EH feature

EN_ON

0: EH feature is disabled

1: EH feature is enabled

FIELD_ON

0: RF field is not detected

1: RF field is present and ST25DVxxx may communicate in RF

Depending of

power source

VCC_ON

0: No DC supply detected on VCC pin or Low Power Down mode

is forced (LPD is high)

1: VCC supply is present and Low Power Down mode is not

forced (LPD is low)

Depending of

power source

b7-b4

RFU

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