ST25DV04KC datasheet(18/203 Pages) STMICROELECTRONICS

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Table 12. ENDA3

Bit

Name

Function

Factory Value

b7-b0

ENDA3

End Area 3 = 8 x ENDA3 + 7 when expressed in blocks (RF)

End Area 3 = 32 x ENDA3 + 31 when expressed in bytes (I2C)

ST25DV04KC: 0Fh

ST25DV16KC: 3Fh

ST25DV64KC: FFh

Note:

Refer to Table 13. System configuration memory map for ENDA3 register.

4.3

System configuration area

In addition to EEPROM user memory, ST25DVxxKC includes a set of static registers located in the system

configuration area memory (EEPROM nonvolatile registers). Those registers are set during device configuration

(that is: area extension), or by the application (that is: area protection). Static registers content is read during the

boot sequence and define basic ST25DVxxKC behaviour.

In RF, the static registers located in the system configuration area can be accessed via dedicated Read

Configuration and Write Configuration commands, with a pointer acting as the register address.

The RF configuration security session must first be open, by presenting a valid RF configuration password, to

grant write access to system configuration registers.

The system configuration area write access by RF can also be deactivated by I2C host.

In I2C static registers located in the system configuration area can be accessed with I2C read and write

commands with device select E2=1, E1=1. Readable system areas could be read in continuity.

I2C security session must first be open, by presenting a valid I2C password, to grant write access to system

configuration registers.

The following table shows the complete map of the system configuration area, as seen by RF and I2C interface.

Table 13. System configuration memory map

RF access

Static Register

I2C access

Address

Type

Name

Function

Device select

Address

Type

00h

RW (1)

GPO1

Enable/disable GPO output and GPO ITs for RF events

E2=1, E1=1

0000h

RW (2)

01h

RW(1)

GPO2

Enable/disable GPO ITs for I2C events and set Interruption

pulse duration

E2=1, E1=1

0001h

RW(2)

02h

RW(1)

EH_MODE

Energy Harvesting default strategy after Power ON

E2=1, E1=1

0002h

RW(2)

03h

RW(1)

RF_MNGT

RF interface state after Power ON

E2=1, E1=1

0003h

RW(2)

04h

RW(1)

RFA1SS

Area1 RF access protection

E2=1, E1=1

0004h

RW(2)

05h

RW(1)

ENDA1

Area 1 ending point

E2=1, E1=1

0005h

RW(2)

06h

RW(1)

RFA2SS

Area2 RF access protection

E2=1, E1=1

0006h

RW(2)

07h

RW(1)

ENDA2

Area 2 ending point

E2=1, E1=1

0007h

RW(2)

08h

RW(1)

RFA3SS

Area3 RF access protection

E2=1, E1=1

0008h

RW(2)

09h

RW(1)

ENDA3

Area 3 ending point

E2=1, E1=1

0009h

RW(2)

0Ah

RW(1)

RFA4SS

Area4 RF access protection

E2=1, E1=1

000Ah

RW(2)

No access

I2CSS

Area 1 to 4 I2C access protection

E2=1, E1=1

000Bh

RW(2)

N/A

RW (3) (4) LOCK_CCFILE Blocks 0 and 1 RF Write protection

E2=1, E1=1

000Ch

RW(2)

0Dh

RW(1)

FTM

Fast transfer mode authorization and watchdog setting.

E2=1, E1=1

000Dh

RW(2)

No access

I2C_CFG

I2C slave address configuration and enable/disable RF

switch off from I2C.

E2=1, E1=1

000Eh

RW(2)

ST25DV04KC ST25DV16KC ST25DV64KC

System configuration area

DS13519 - Rev 3

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