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BQ24152 Datasheet(PDF) 26 Page - Texas Instruments

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Part No. BQ24152
Description  Fully Integrated Switch-Mode One-Cell Li-Ion Charger with Full USB Compliance and USB-OTG Support
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Maker  TI [Texas Instruments]
Homepage  http://www.ti.com
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BQ24152 Datasheet(HTML) 26 Page - Texas Instruments

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Register Address Byte
I
2C INTERFACE TIMING CHARACTERISTICS
bq24152
SLUS847 – JUNE 2008 ...................................................................................................................................................................................................... www.ti.com
The slave address byte is the first byte received following the START condition from the master device. The
address bits are factory preset to ‘1101011’.
MSB
LSB
0
0
0
0
0
D2
D1
D0
Following the successful acknowledgment of the slave address, the bus master will send a byte to the bq24152,
which contains the address of the register to be accessed. The bq24152 contains five 8-bit registers accessible
via a bidirectional I2C-bus interface. Among them, four internal registers have read and write access; and one
has only read access.
SYMBOL
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
Standard mode
100
kHz
Fast mode
400
kHz
High-speed mode (write operation)
3.4
CB - 100 pF max
High-speed mode (read operation)
fSCL
SCL clock frequency
2
CB - 100 pF max
MHz
High-speed mode (write operation)
1.7
CB - 400 pF max
High-speed mode (read operation)
2
CB - 400 pF max
Standard mode
4.7
Bus free time between a STOP and
tBUF
µs
START condition
Fast mode
1.3
Standard mode
4
µs
Hold time (repeated) START
tHD; tSTA
Fast mode
600
condition
ns
High-speed mode
160
Standard mode
4.7
µs
Fast mode
1.3
tLOW
LOW period of the SCL clock
High-speed mode, CB – 100 pF max
160
ns
High-speed mode, CB – 400 pF max
320
Standard mode
4
µs
Fast mode
600
tHIGH
HIGH period of the SCL clock
High-speed mode, CB – 100 pF max
60
ns
High-speed mode, CB – 400 pF max
120
Standard mode
4.7
µs
Setup time for a repeated START
tSU; tSTA
Fast mode
600
condition
ns
High-speed mode
160
Standard mode
250
tSU; tDAT
Data setup time
Fast mode
100
ns
High-speed mode
10
Standard mode
3.45
µs
Fast mode
0.9
tHD; tDAT
Data hold time
High-speed mode, CB – 100 pF max
70
ns
High-speed mode, CB – 400 pF max
150
26
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Copyright © 2008, Texas Instruments Incorporated
Product Folder Link(s): bq24152


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