Datasheet
dsPIC30F2011/2012/3012/3013
DS70139G-page 178 © 2010 Microchip Technology Inc.
I
TABLE 20-33: I
2
C™ BUS DATA TIMING REQUIREMENTS (MASTER MODE)
AC CHARACTERISTICS
Standard Operating Conditions: 2.5V to 5.5V
(unless otherwise stated)
Operating temperature -40°C ≤ TA ≤ +85°C for Industrial
-40°C ≤ TA ≤ +125°C for Extended
Param
No.
Symbol Characteristic Min
(1)
Max Units Conditions
IM10 T
LO:SCL Clock Low Time 100 kHz mode TCY/2 (BRG + 1) — μs
400 kHz mode T
CY/2 (BRG + 1) — μs
1 MHz mode
(2)
TCY/2 (BRG + 1) — μs
IM11 T
HI:SCL Clock High Time 100 kHz mode TCY/2 (BRG + 1) — μs
400 kHz mode T
CY/2 (BRG + 1) — μs
1 MHz mode
(2)
TCY/2 (BRG + 1) — μs
IM20 T
F:SCL SDA and SCL
Fall Time
100 kHz mode — 300 ns CB is specified to be
from 10 to 400 pF
400 kHz mode 20 + 0.1 C
B 300 ns
1 MHz mode
(2)
— 100 ns
IM21 T
R:SCL SDA and SCL
Rise Time
100 kHz mode — 1000 ns CB is specified to be
from 10 to 400 pF
400 kHz mode 20 + 0.1 C
B 300 ns
1 MHz mode
(2)
— 300 ns
IM25 T
SU:DAT Data Input
Setup Time
100 kHz mode 250 — ns
400 kHz mode 100 — ns
1 MHz mode
(2)
— — ns
IM26 T
HD:DAT Data Input
Hold Time
100 kHz mode 0 — ns
400 kHz mode 0 0.9 μs
1 MHz mode
(2)
— — ns
IM30 T
SU:STA Start Condition
Setup Time
100 kHz mode TCY/2 (BRG + 1) — μs Only relevant for
Repeated Start
condition
400 kHz mode T
CY/2 (BRG + 1) — μs
1 MHz mode
(2)
TCY/2 (BRG + 1) — μs
IM31 T
HD:STA Start Condition
Hold Time
100 kHz mode TCY/2 (BRG + 1) — μs After this period the
first clock pulse is
generated
400 kHz mode T
CY/2 (BRG + 1) — μs
1 MHz mode
(2)
TCY/2 (BRG + 1) — μs
IM33 T
SU:STO Stop Condition
Setup Time
100 kHz mode TCY/2 (BRG + 1) — μs
400 kHz mode T
CY/2 (BRG + 1) — μs
1 MHz mode
(2)
TCY/2 (BRG + 1) — μs
IM34 T
HD:STO Stop Condition 100 kHz mode TCY/2 (BRG + 1) — ns
Hold Time 400 kHz mode T
CY/2 (BRG + 1) — ns
1 MHz mode
(2)
TCY/2 (BRG + 1) — ns
IM40 T
AA:SCL Output Valid
From Clock
100 kHz mode — 3500 ns
400 kHz mode — 1000 ns
1 MHz mode
(2)
——ns
IM45 T
BF:SDA Bus Free Time 100 kHz mode 4.7 — μs Time the bus must be
free before a new
transmission can start
400 kHz mode 1.3 — μs
1 MHz mode
(2)
——μs
IM50 C
B Bus Capacitive Loading — 400 pF
Note 1: BRG is the value of the I
2
C Baud Rate Generator. Refer to Section 21. “Inter-Integrated Circuit™ (I
2
C)”
(DS70068) in the dsPIC30F Family Reference Manual (DS70046).
2: Maximum pin capacitance = 10 pF for all I
2
C™ pins (for 1 MHz mode only).