Datasheet
© 2011 Microchip Technology Inc. DS70118J-page 177
dsPIC30F2010
TABLE 22-36: 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 ≤ T
A ≤ +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 THI: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 TF: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 TR: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 TSU:DAT Data Input
Setup Time
100 kHz mode 250 — ns
—
400 kHz mode 100 — ns
1 MHz mode
(2)
——ns
IM26 THD:DAT Data Input
Hold Time
100 kHz mode 0 — ns
—
400 kHz mode 0 0.9 µs
1 MHz mode
(2)
——ns
IM30 TSU: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 THD: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 TSU: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 THD: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 TAA:SCL Output Valid
From Clock
100 kHz mode — 3500 ns —
400 kHz mode — 1000 ns —
1 MHz mode
(2)
——ns —
IM45 TBF: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).