Rainbow-electronics DS2788 Bedienungsanleitung PDF herunterladen (Seite 20)

DS2788

The EEPROM register provides access control of the

EEPROM blocks. EEPROM blocks can be locked to pre-

vent alteration of data within the block. Locking a block

disables write access to the block. Once a block is

locked, it cannot be unlocked. Read access to EEPROM

blocks is unaffected by the lock/unlock status.

Stand-Alone Fuel-Gauge IC with

LED Display Drivers

20 ______________________________________________________________________________________

EEPROM Register

ADDRESS 1Fh BIT DEFINITION

Field Bit Format Allowable Values

EEC 7 Read Only

EEPROM Copy Flag

Set to 1 when: Copy Data command executed.

Cleared to 0 when: Copy Data com mand completes.

Note: While EEC = 1, writes to EEPROM addresses are ignored.

Power-up default: 0

LOCK 6

Read/Write

to 1

EEPROM Lock Enable

Host write to 1: Enables the Lock command. H ost must issue Lock command as

next command after writi ng lo ck enable bit to 1.

Cleared to 0 when: Lock command comp letes or when Lock command is not the

command issued immediately following the Write command used to set the loc k

enable bit.

Power-up default: 0

Reserved 2:6 Undefined

BL1 1 Read Only

EEPROM Block 1 Lock Flag (Parameter EEPROM 60h–7Fh)

0: EEPROM is not locked.

1: EEPROM block is locked.

Factory default: 0

BL0 0 Read Only

EEPROM Block 0 Lock Flag (User EEPROM 20h–2Fh)

0: EEPROM is not locked.

1: EEPROM block is locked.

Factory default: 0

Figure 17. EEPROM Register Format

1 2 ... 15 16 17 18 19 20 21 22 23 24 25 ... 29 30

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Rainbow-electronics DS2788 Bedienungsanleitung Seite 20