BQ26150 Datasheet, PDF (3/16 Pages) Texas Instruments – BATTERY PACK SECURITY AND AUTHENTICATION IC FOR PORTABLE APPLICATIONS (bqSECURE)

bq26150
www.ti.com
SLUS641A – JANUARY 2005 – REVISED JULY 2005
STANDARD SERIAL COMMUNICATION (HDQ) TIMING
over recommended operating temperature and supply voltage range (unless otherwise noted) See Figure 1
t_(B)
t_(BR)
t_(CYCH)
t_(HW1)
t_(HW0)
t_(RSPS)
t_(CYCD)
t_(DW1)
t_(DW0)
PARAMETER
Power up delay
Break timing
Break recovery
Host bit window
Host sends 1
Host sends 0
bq26150 to host response
bq26150 bit window
bq26150 sends 1
bq26150 sends 0
TEST CONDITIONS
Power capacitor charge time
MIN TYP MAX
100
190
40
190
0.5
50
86
145
190
320
190
250
32
50
80
145
UNIT
ms
µs
µs
µs
µs
µs
µs
µs
µs
µs
t_(B)
(a) Break and Break Recovery Timing;
t_(BR)
t_(HW1)
t_(HW0)
t_(CYCH)
(b) Host Transmitted Bit Timing;
BREAK
7 bit
ADDRESS
t_(DW1)
t_(DW0)
t_(CYCD)
(c) bq26150 Transmitted Bit Timing;
1 bit
R/W
8 bit
DATA
t_(RSPS)
(d) bq26150 to Host Response Timing
Figure 1. HDQ Bit Timing Diagrams
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