STBC21 datasheet(26/54 Pages) STMICROELECTRONICS

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Detailed description

STBC21

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Doc ID 023256 Rev 1

counting. Once the charger exits “idle” state (temperature decrease to 95 °C), it restarts the

operations restoring the status it was in before the interruption.

The flowchart in

Figure 16 shows junction shutdown temperature detection.

Figure 16.

Junction shutdown temperature detection

5.10

I²C data transfer

A standard I²C interface, mapped in pins RES1 (SCL) and RES2 (SDA), is used to

read/write the non-volatile memory integrated into the chip. Both read and write operations

can be always done based on registers or in one operation starting from a given address till

the bottom of the memory.

Example: Write into Reg 01H (Customer Register) in order to set the pre-charge current

(ISET1) to 90 mA and end-charge current (ISET3) to 100 mA.

AM10425v 1

Junc on shutdown

temperature detecon

YES

Charging Stop

Junc on temperature

>115°C

YES

During charge

YES

Charge on going

LED SET

Timers keep coun ng

Junc on temperature

<95°C

Charge restart from the

interrupted point

Table 8.

Write single register

SLAVE ADDRESS

R/W

DATA

A/An

Master

Slave (STBC21)

S = START condition (from Master to STBC21)

SLAVE ADDRESS= 6BH

R/W = '0' Write / '1' Read

A = Acknowledge (SDA low from STBC21)

DATA = 8 bits data register (from MSB to LSB)

An = Acknowledge/Not Acknowledge (SDA left high from STBC21)

P = STOP condition (from Master to STBC21)

STBC21 数据表(PDF) 26 Page - STMicroelectronics

STBC21 数据表(HTML) 26 Page - STMicroelectronics

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