DA6512.000

11 July, 2012

12 (26)

Note that the internal clock oscillator frequency has

been factory trimmed and the trim value has been

stored

in

the

EEPROM

It

is

recommended

not

to

change

the

factory

programmed value!

is for trimming the internal clock oscillator to 200

kHz

frequency.

This

200kHz

(or

100kHz

if

SOSCOUT=1) can be measured at the OSCOUT

pin. The six LSB bits adjust the oscillator period in

104ns steps. The period increases when the trim

corresponds to the nominal 200kHz clock oscillator

frequency.

After finding a suitable trim value it can be stored to

Table 7.

Bit Number

Bit Name

Description

Value

Function

5-0

OSCF

Oscillator frequency

control bits

Oscillator frequency control

if the stored EEPROM byte is corrupted. The

register is updated after each EEPROM data byte

read command. See table 8 below. The ERROR bit

tells whether an data error has been detected or

not. The DED bit tells whether two or more bit errors

have been detected. The EEPROM can correct

internally only single bit errors i.e. when ERROR=1

and DED=0. The read EEPROM data byte is

corrupted if ERROR=DED=1.

Table 8.

Bit Number

Bit Name

Description

Value

Function

7

ERROR

EEPROM error

detection

0

1

No errors

Error detected

6

DED

EEPROM double

error detection

0

1

No errors

2 (or more) data errors

5-0

0

-

X = Don’t care