Datasheet

 2008-2013 Microchip Technology Inc. DS22107B-page 13
MCP454X/456X/464X/466X
FIGURE 1-1: I
2
C Bus Start/Stop Bits Timing Waveforms.
TABLE 1-1: I
2
C BUS START/STOP BITS REQUIREMENTS
I
2
C AC Characteristics
Standard Operating Conditions (unless otherwise specified)
Operating Temperature –40C  T
A  +125C (Extended)
Operating Voltage V
DD range is described in AC/DC characteristics
Param.
No.
Symbol Characteristic Min Max Units Conditions
F
SCL
Standard mode 0 100 kHz C
b
= 400 pF, 1.8V - 5.5V
Fast mode 0 400 kHz C
b
= 400 pF, 2.7V - 5.5V
High-Speed 1.7 0 1.7 MHz C
b
= 400 pF, 4.5V - 5.5V
High-Speed 3.4 0 3.4 MHz C
b
= 100 pF, 4.5V - 5.5V
D102 Cb Bus capacitive
loading
100 kHz mode — 400 pF
400 kHz mode — 400 pF
1.7 MHz mode — 400 pF
3.4 MHz mode — 100 pF
90 T
SU:STA START condition 100 kHz mode 4700 — ns Only relevant for repeated
START condition
Setup time 400 kHz mode 600 — ns
1.7 MHz mode 160 — ns
3.4 MHz mode 160 — ns
91 T
HD:STA START condition 100 kHz mode 4000 — ns After this period the first
clock pulse is generated
Hold time 400 kHz mode 600 — ns
1.7 MHz mode 160 — ns
3.4 MHz mode 160 — ns
92 T
SU:STO STOP condition 100 kHz mode 4000 — ns
Setup time 400 kHz mode 600 — ns
1.7 MHz mode 160 — ns
3.4 MHz mode 160 — ns
93 T
HD:STO STOP condition 100 kHz mode 4000 — ns
Hold time 400 kHz mode 600 — ns
1.7 MHz mode 160 — ns
3.4 MHz mode 160 — ns
91
93
SCL
SDA
START
Condition
STOP
Condition
90
92