Datasheet

© 2009-2011 Microchip Technology Inc. DS61156G-page 209
PIC32MX5XX/6XX/7XX
TABLE 31-32: I2Cx BUS DATA TIMING REQUIREMENTS (MASTER MODE)
AC CHARACTERISTICS
Standard Operating Conditions: 2.3V to 3.6V
(unless otherwise stated)
Operating temperature -40°C ≤ TA ≤ +85°C for Industrial
-40°C
≤ TA ≤ +105°C for V-Temp
Param.
No.
Symbol Characteristics Min.
(1)
Max. Units Conditions
IM10 TLO:SCL Clock Low Time 100 kHz mode TPB * (BRG + 2) — μs—
400 kHz mode T
PB * (BRG + 2) — μs—
1 MHz mode
(2)
TPB * (BRG + 2) — μs—
IM11 T
HI:SCL Clock High Time 100 kHz mode TPB * (BRG + 2) — μs—
400 kHz mode T
PB * (BRG + 2) — μs—
1 MHz mode
(2)
TPB * (BRG + 2) — μs—
IM20 T
F:SCL SDAx and SCLx
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 SDAx and SCLx
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)
100 — ns
IM26 T
HD:DAT Data Input
Hold Time
100 kHz mode 0 — μs—
400 kHz mode 0 0.9
μs
1 MHz mode
(2)
0 0.3 μs
IM30 T
SU:STA Start Condition
Setup Time
100 kHz mode TPB * (BRG + 2) —
ns
Only relevant for
Repeated Start
condition
400 kHz mode T
PB * (BRG + 2) — ns
1 MHz mode
(2)
TPB * (BRG + 2) — ns
IM31 T
HD:STA Start Condition
Hold Time
100 kHz mode TPB * (BRG + 2) —
ns
After this period, the
first clock pulse is
generated
400 kHz mode T
PB * (BRG + 2) — ns
1 MHz mode
(2)
TPB * (BRG + 2) — ns
IM33 T
SU:STO Stop Condition
Setup Time
100 kHz mode TPB * (BRG + 2) —
ns
—
400 kHz mode T
PB * (BRG + 2) — ns
1 MHz mode
(2)
TPB * (BRG + 2) — ns
IM34 T
HD:STO Stop Condition 100 kHz mode TPB * (BRG + 2) — ns —
Hold Time 400 kHz mode T
PB * (BRG + 2) — ns
1 MHz mode
(2)
TPB * (BRG + 2) — ns
IM40 T
AA:SCL Output Valid
from Clock
100 kHz mode — 3500 ns —
400 kHz mode — 1000 ns —
1 MHz mode
(2)
— 350 ns —
IM45 T
BF:SDA Bus Free Time 100 kHz mode 4.7 — μs The amount of time the
bus must be free
before a new
transmission can start
400 kHz mode 1.3 —
μs
1 MHz mode
(2)
0.5 — μs
IM50 C
B Bus Capacitive Loading — 400 pF —
IM51 T
PGD Pulse Gobbler Delay
(3)
52 312 ns —
Note 1: BRG is the value of the I
2
C™ Baud Rate Generator.
2: Maximum pin capacitance = 10 pF for all I2Cx pins (for 1 MHz mode only).