Datasheet

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SLUS491 – JULY 2001
4
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standard serial communication timing specification over recommended operating temperature
and supply voltage, refer to Figure 1 (unless otherwise noted)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
t
(CYCH)
Cycle time, host to bq26231 (write) 190 µs
t
(CYCB)
Cycle time, bq26231 to host (read) 190 205 250 µs
t
(STRH)
Start hold, host to bq26231 (write) 5 ns
t
(STRB)
Start hold, bq26231 to host (read) 32 µs
t
(DSU)
Data setup (write) 50 µs
t
(DSUB)
Data setup (read) 50 µs
t
(DH)
Data hold 100 µs
t
(DV)
Data valid 80 µs
t
(SSUB)
Stop setup (bq26231 to host) 145 µs
t
(SSU)
Stop setup (host to bq26231) 145 µs
t
(B)
Break 190 µs
t
(BR)
Break recovery 40 µs
t
(RSPS)
Response time, bq26231 to host 190 320 µs
t
(B)
t
(BR)
t
(CYCH)
t
(STRH)
t
(DSU)
t
(DH)
t
(SSU)
Write 0
Write 1
t
(CYCB)
t
(STRB)
t
(DSUB)
t
(DV)
t
(SSUB)
Read 0
Read 1
Figure 1. Standard Serial Communication Timing Diagram