BQ2084-V133 Datasheet, PDF (6/64 Pages) Texas Instruments – SBS v1.1-COMPLIANT GAS GAUGE FOR USE WITH THE bq29312

bq2084-V133
SLUS640A – JUNE 2005 – REVISED JUNE 2005
PIN ASSIGNMENTS
TSSOP (DBT)
(TOP VIEW)
VIN 1
TS 2
VSSA 3
PU 4
PRES 5
SCLK ⁶
NC ⁷
VDDD ⁸
RBI ⁹
SDATA ¹⁰
VSSD ¹¹
SAFE ¹²
NC ¹³
NC ¹⁴
SMBC ¹⁵
SMBD ¹⁶
DISP ¹⁷
PFIN ¹⁸
VSSD ¹⁹
38 ^VSSD
37 ^NC
36 ^NC
35 ^CLKOUT
34 ^XCK1/VSSA
33 ^XCK2/ROSC
32 ^FILT
31 ^VDDA
30 ^VSSA
29 ^VSSA
28 ^SR1
27 ^SR2
26 MRST
25 EVENT
24 LED1
23 LED2
22 LED3
21 LED4
20 LED5
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TERMINAL
NAME
NO.
TSSOP
CLKOUT
35
DISP
17
FILT
32
EVENT
25
LED1
24
LED2
23
LED3
22
LED4
21
LED5
20
MRST
26
NC
7, 13, 14,
36, 37
PFIN
18
PRES
5
PU
4
RBI
9
SAFE
12
SCLK
6
SDATA
10
SMBC
15
SMBD
16
Terminal Functions
I/O
DESCRIPTION
O 32.768-kHz output to the bq29312
I Display control for the LED drivers LED1 through LED5
I Analog input connected to the external PLL filter
I Input from bq29312 XALERT output
O
O
O LED display segments that each may drive an external LED
O
O
I Master reset input that forces the device into reset when held high
– No connection
I Active low input to detect secondary protector output status
I Active low input to sense system insertion
O Output to pull up the /PRES pin for detection
I Register backup that provides backup potential to the bq2084-V133 data registers during periods of low
operating voltage. RBI accepts a storage capacitor or a battery input.
O Active low output for additional level of safety protection; e.g., fuse blow.
O Communication clock to the bq29312
I/O Data transfer to and from bq29312
I/O SMBus clock open-drain bidirectional pin used to clock the data transfer to and from the bq2084-V133
I/O SMBus data open-drain bidirectional pin used to transfer address and data to and from the
bq2084-V133
6