QN8007B/8007LB
Table 8: 2-Wire Interface Timing Characteristics
(Vcc = 2.7 ~ 5.0 V, TA = -25 ~ 85 oC, unless otherwise noticed. Typical values are at Vcc = 3.3V and TA = 25oC).
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNIT
fSCL
tLOW
tHI
2-wire clock frequency
Clock Low time
400
kHz
s
1.3
0.8
Clock High time
s
SCL input to SDA
falling edge start 1,3
tST
0.6
0.6
s
s
SDA falling edge to
tSTHD
SCL falling edge start3
trc
tfc
SCL rising edge3
SCL falling edge3
Level from 30% to 70%
Level from 70% to 30%
300
300
ns
ns
SCL falling edge to
tdtHD
tdtc
tstp
tw
20
ns
ns
next SDA rising edge3
SDA rising edge to
900
next SCL rising edge3
SCL rising edge to
SDA rising edge 2,3
Duration before restart3
0.6
1.3
s
s
pF
SCL, SDA capacitive
loading3
Cb
10
Notes:
1. Start signaling of 2-wire interface.
2. Stop signaling of 2-wire interface.
3. Guaranteed by design.
Figure 3: 2-wire Serial Control Interface Timing Diagram
Rev 2.09 (11/09)
Confidential A
Copyright ©2009 by Quintic Corporation
Confidential Information contained herein is covered under Non-Disclosure Agreement (NDA).
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