MAS6512 datasheet(15/32 Pages) MAS

15 / 32 page

DA6512.003

2 December, 2016

15 (32)

CONVERSION RESULT REGISTERS (EA…EBHEX)

After measuring capacitance, temperature or supply

voltage the 16-bit conversion result is stored into

two register addresses EAHEX and EBHEX. The MSB

(most significant byte) is at EAHEX and LSB (least

significant byte) at EBHEX.

EEPROM STATUS REGISTER (EC/6CHEX)

The EEPROM status register (EC/6CHEX) indicates

if the stored EEPROM byte is corrupted. The

read command. See table 9 below. The ERROR bit

tells whether a 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 9. MAS6512 EEPROM status register (EC/6CHEX). Only bits (7:6) are used.

Bit Number

Bit Name

Description

Value

Function

ERROR

EEPROM error

detection

No errors

Error detected

DED

EEPROM double

error detection

No errors

2 (or more) data errors

5-0

000000

TRIMMING CONTROL REGISTER (ED/6DHEX)

The Trimming control register (ED/6DHEX) is used to

select between different trimming operating modes.

See table 10 showing the functions of the Trimming

control register.

After a power-up reset, master reset via XCLR or a

software reset via serial bus the Trimming control

(00HEX). This is the normal operating mode for a

trimmed MAS6512 device. In this mode the

capacitive front-end trim values to use (CS, CR and

Gain) are automatically read from the EEPROM

memory in the beginning of each conversion start.

When calibrating a sensor there is an operating

mode in which only the factory calibrated internal

oscillator (OSC) clock trim data is read from the

EEPROM memory. This mode is selected by writing

%10101010 (AAHEX) to the Trimming control

tests for different front-end trim register values

before suitable values are found and programmed

to the EEPROM.

There is also a trimming mode in which all trim data

including the internal oscillator trim data is taken

from the trim registers rather than from the

EEPROM. This mode is selected by writing

%11111111 (FFHEX) to the Trimming control

Table 10. Trimming control Register (ED/6DHEX)

Bit

Number

Bit Name

Description

Value

Function

7-0

REGEE<7:0>

EEPROM control bits

00000000

10101010

11111111

OTHER

All trim data from EEPROM

(normal operating mode)

Only OSC from EEPROM

All trim data from registers

All trim data from EEPROM

MAS6512 数据表(PDF) 15 Page - Micro Analog systems

MAS6512 数据表(HTML) 15 Page - Micro Analog systems

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