ST25DV64K datasheet(36/197 Pages) STMICROELECTRONICS

36 / 197 page

Table 27. IT_TIME access

I2C

Command

Type

Address

Type

Read Configuration (cmd code A0h) @01h

Write Configuration (cmd code A1h) @01h

R always, W if RF configuration security

session is open and configuration not

locked

E2=1, 0001h

R always, W if I2C security

session is open

Table 28. IT_TIME

Bit

Name

Function

Factory Value

b2-b0

IT_TIME

Pulse duration = 301 us - IT_TIME x 37.65 us ± 2 us

011b

b7-b3

RFU

00000b

Note:

Refer to Table 11. System configuration memory map for the IT_TIME register.

•

Defines interrupt pulse duration on GPO pin for the flowing events: RF_INTERRUPT, FIELD_CHANGE,

RF_PUT_MSG, RF_GET_MSG and RF_WRITE.

•

See Eq. (1) for interrupt duration calculation.

•

RF configuration security session (present RF password 0) or I2C security session (present I2C password)

must be open in order to write IT_TIME register.

Table 29. GPO_CTRL_Dyn access

I2C

Command

Type

Address

Type

Read Dynamic Configuration (cmd code ADh) @00h

Fast Read Dynamic Configuration (cmd code CDh) @00h

E2 = 0, 2000h

b0-b6: RO

b7 : R always, W always

Table 30. GPO_CTRL_Dyn

Bit

Name

Function

Factory Value

RF_USER_EN

0: disabled

1: GPO output level is controlled by Manage GPO Command (set/reset)

RF_ACTIVITY_EN

0: disabled

1: GPO output level changes from RF command EOF to response EOF.

RF_INTERRUPT_EN

0: disabled

1: GPO output level is controlled by Manage GPO Command (pulse).

FIELD_CHANGE_EN

0: disabled

1: A pulse is emitted on GPO, when RF field appears or disappears.

RF_PUT_MSG_EN

0: disabled

1: A pulse is emitted on GPO at completion of valid RF Write Message command.

RF_GET_MSG_EN

0: disabled

1: A pulse is emitted on GPO at completion of valid RF Read Message command if

end of message has been reached.

RF_WRITE_EN

0: disabled

1: A pulse is emitted on GPO at completion of valid RF write operation in

EEPROM.

GPO_EN

0: GPO output is disabled. GPO is High-Z (open drain) or 0 (CMOS)

1: GPO output is enabled. GPO outputs enabled interrupts.

ST25DV04K ST25DV16K ST25DV64K

GPO

DS10925 - Rev 11

page 36/197

ST25DV64K Scheda tecnica(PDF) 36 Page - STMicroelectronics

ST25DV64K Scheda tecnica(HTML) 36 Page - STMicroelectronics

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

Scheda tecnica Scarica

Link URL