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| BQ28Z560-R1 Datasheet, PDF (9/60 Pages) Texas Instruments – Single Cell Li-Ion Battery Gas Gauge and Protection | |||
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bq28z560-R1
www.ti.com
SLUSBD3 â APRIL 2013
ADC (TEMPERATURE AND CELL VOLTAGE) CHARACTERISTICS (continued)
TA = â40 to +85ºC, VBAT = 2.7 V to 5.5 V; Typical values stated, where TA = 25ºC and VBAT = 3.6 V (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
Z(ADC1)
Effective input resistance (TS) (1)
8
Mâ¦
Effective input resistance (BAT) (1) bq28z560-R1 not measuring cell voltage
8
Mâ¦
Z(ADC2)
bq28z560-R1 measuring cell voltage
100
kâ¦
Ilkg(ADC)
Input leakage current (1)
0.3
µA
(1) Specified by design. Not production tested.
DATA FLASH MEMORY CHARACTERISTICS
TA = â40 to +85ºC, VBAT = 2.7 V to 5.5 V; Typical values stated, where TA = 25ºC and VBAT = 3.6 V (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
Data retention (1)
tDR
Flash programming write-cycles (1)
10
20,000
Years
Cycles
tWORDPROG
ICCPROG
Word programming time (1)
Flash-write supply current (1)
2
ms
5
10
mA
(1) Specified by design. Not production tested.
HDQ COMMUNICATION TIMING CHARACTERISTICS
TA = â40 to +85ºC, VBAT = 2.7 V to 5.5 V; Typical values stated, where TA = 25ºC and VBAT = 3.6 V (unless otherwise noted).
Capacitance on GPIO is 10 pF unless otherwise specified (1).
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
t(CYCH)
t(CYCD)
t(HW1)
t(DW1)
t(HW0)
t(DW0)
t(RSPS)
Cycle time, host to bq28z560-R1
Cycle time, bq28z560-R1 to host
Host sends 1 to bq28z560-R1
bq28z560-R1 sends 1 to host
Host sends 0 to bq28z560-R1
bq28z560-R1 sends 0 to host
Response time, bq28z560-R1 to
host
190
μs
190
205
250
μs
0.5
50
μs
32
50
μs
86
145
μs
80
145
μs
190
950
μs
t(B)
t(BR)
t(RISE)
Break Time
Break Recovery Time
HDQ Line Rising Time to Logic 1
(1.2 V)
190
μs
40
μs
950
ns
(1) Parameters specified by worst-case test program execution in FAST mode.
t(B)
(a) Break and Break Recovery
t(BR)
1. 2 V
t(RISE)
(b) HDQ line rise time
t(HW1)
Break
t(HW0)
t(CYCH)
(c) Host Transmitted Bit
7-bit address
1-bit
R/W
t(DW1)
t(DW0)
t(CYCD)
(d) Gauge Transmitted Bit
8-bit data
Copyright © 2013, Texas Instruments Incorporated
t(RSPS)
(e) Gauge to Host Response
Figure 4. HDQ Timing
Product Folder Links: bq28z560-R1
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