AS8525 datasheet(34/38 Pages) AMSCO

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AS8525

Datasheet - Application In form atio n

0x10

………

0x17

Backup-0

……………

Backup-7

On POR_VSUP

0000_0000

RD/WR

8 backup registers

These registers can be used by MCU to backup any system configuration before

sending the device to sleep mode.

If Test Control Register D[5] =1, Backup-0 to Backup-3 are used for testing

connectivity between OTP and digital modules.

Backup-0 = OTP[25:32]

Backup-1 = OTP[33:40]

Backup-2 = OTP[41:47]

Backup-3 = OTP[48:49]

Diagnostic Registers

0 x 08

Diagnostic

On POR_VSUP

0000_0011

D7-D0 = DR[7:0] 8-LSB bits of the 24-bit Diagnostic Register.

D0 POR-VSUP (set when VSUP < Vsuvr_on, cleared after µC read)

D1 UVVCC Under-voltage VCC (set when VCC < Vuvr_on, cleared after µC read)

D2 OTEMP160 Over-temperature Reset. (set when temp > Tsd, cleared after µC

read)

D3 OTEMP140 Over-temperature warning (set when temp > Totset, cleared after

µC read)

D4 OVVBAT Overvoltage VBAT. (set when VSUP > Vovthh, cleared after µC read)

D5 Reserved

D6 RWAKE Remote Wakeup. (set on Remote Wakeup event on LIN Bus, cleared

after µC read)

D7 WWDT Window watchdog timeout. (set on failure of Window watchdog

timeout, cleared after µC read)

0 x 09

Diagnostic

On POR_VSUP

0000_0000

D7-.D0 = DR[15:8] Next 8 LSB bits of the 24 bit Diagnostic Register.

D0 TXTIMEOUT Tx timeout of 1sec. (set on TX low > 1sec, cleared after µC read)

D1 (TEMPSHUT) This bit is set on entering into temporary shutdown state and

cleared after µC read.

D2 Set on failure of timeout Watchdog trigger, cleared after µC read

D7- D3 Reserved

Table 21. Registers

Addr

RD/WR

Description

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