SEA01 datasheet(12/24 Pages) STMICROELECTRONICS

Il numero della parte	SEA01

Spiegazioni elettronici	Constant voltage and current controller with online digital trimming

PDF	24 Pages

Scroll/Zoom	100%

Produttore elettronici	STMICROELECTRONICS [STMicroelectronics]

Homepage	http://www.st.com

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12 / 24 page

Online digital trimming procedure

SEA01

12/24

DocID024452 Rev 1

3.4.1

Emulate VrefV

The command “emulate VrefV” writes data in the volatile VrefV register. It is a write

command and corresponds to the code given in Table 5.

The value of VrefV is changed according to the data sent (see Table 6). The 8th bit D8 is the

parity check bit.

Byte 1

(address, write type)

Byte 2:

command

Byte 3:

write data

Sent by slave (device)

Sent by master

Table 6. VrefV values

Data bits

Trim step [%]

VrefV value [V]

Default(1)

MSB

LSB

D8 (pck)

2.500 default (1) (2)

0.2

2.505

0.4

2.510

0.6

2.515

0.8

2.520

2.525

1.2

2.530

1.4

2.535

1.6

2.540

1.8

2.545

2.550

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