BQ2084-V140_14 Datasheet, PDF (6/64 Pages) Texas Instruments – SBS v1.1-COMPLIANT GAS GAUGE FOR USE WITH THE bq29312

bq2084-V140
SLUS664B – JULY 2005 – REVISED AUGUST 2006
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
QFN (RTT)
(TOP VIEW)
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36 35 34 33 32 31 30 29 28 27
SMBD ¹
26 PU
DISP 2
25 VIN
PFIN 3
24 TS
VSSD ⁴
23 VSSD
LED5 ⁵
22 VSSD
LED4 ⁶
LED3 ⁷
LED2 8
21 N/C
20 CLKOUT
19 XCK1 / VSSA
9 10 11 12 13 14 15 16 17 18
NAME
DISP
CLKOUT
FILT
EVENT
LED1
LED2
LED3
LED4
LED5
MRST
NC
PFIN
PRES
PU
RBI
SAFE
SCLK
SDATA
SMBC
TERMINAL
NO.
TSSOP
17
35
32
25
24
23
22
21
20
26
7, 13, 14, 36,
37
18
5
4
NO.
QFN
2
20
17
10
9
8
7
6
5
11
21, 29, 35
3
27
26
9
31
12
34
6
28
10
32
15
36
Terminal Functions
I/O
DESCRIPTION
I
Display control for the LED drivers LED1 through LED5
O
32.768-kHz output to the bq29312
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
Register backup that provides backup potential to the bq2084-V140 data
I
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-V140
6
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