Datasheet

MCP4706/4716/4726
DS22272C-page 8 © 2011-2012 Microchip Technology Inc.
FIGURE 1-3: I
2
C Bus Start/Stop Bits Timing Waveforms.
TABLE 1-2: 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 Electrical Characteristics
Param.
No.
Symbol Characteristic Min Max Units Conditions
F
SCL
SCL pin Frequency Standard mode 0 100 kHz C
b
= 400 pF, 2.7V - 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 C
b
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
94 T
HVCSU
HVC to SCL Setup time 25 — uS High Voltage Commands
95 T
HVCHD
SCL to HVC Hold time 25 — uS High Voltage Commands
91
93
SCL
SDA
Start
Condition
Stop
Condition
90
92
V
IH
111
V
IL