TCA6507_16 Datasheet, PDF (7/45 Pages) Texas Instruments – Low-Voltage 7-Bit I2C and SMBus LED Driver

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TCA6507
SCPS164C – MAY 2007 – REVISED JANUARY 2016
6.6 I²C Interface Timing Requirements
over recommended operating free-air temperature range (unless otherwise noted) (see Figure 8)
STANDARD MODE
I²C BUS
FAST MODE
I²C BUS
f_scl
t_sch
t_scl
t_sp
t_sds
t_sdh
t_icr
t_icf
t_ocf
t_buf
t_sts
t_sth
t_sps
t_vd(data)
t_vd(ack)
C_b
I²C clock frequency
I²C clock high time
I²C clock low time
I²C spike time
I²C serial-data setup time
I²C serial-data hold time
I²C input rise time
I²C input fall time
I²C output fall time
10-pF to 400-pF bus
I²C bus free time between STOP and START conditions
I²C START or repeated START condition setup
I²C START or repeated START condition hold
I²C STOP condition setup
Valid-data time
SCL low to SDA output valid
Valid-data time of ACK condition
I²C bus capacitive load
ACK signal from SCL low to
SDA (out) low
MIN
MAX
MIN MAX
0
100
0
400
4
0.6
4.7
1.3
50
50
250
100
0
0
1000 20 + 0.1C_b(1)
300
300 20 + 0.1C_b(1)
300
300 20 + 0.1C_b(1)
250
4.7
1.3
4.7
0.6
4
0.6
4
0.6
1
1
1
1
0
400
0
400
(1) C_b = total capacitance of one bus line in pF.
UNIT
kHz
μs
μs
ns
ns
ns
ns
ns
ns
μs
μs
μs
μs
μs
μs
pF
6.7 Oscillator Timing Requirements
over recommended operating free-air temperature range (unless otherwise noted)
t_OSC
Oscillator start-up time from power-down or shutdown mode to fully on at
32 kHz
STANDARD
MODE
I²C BUS
MIN MAX
FAST MODE
I²C BUS
MIN MAX
UNIT
5
5
ms
6.8 Switching Characteristics
over recommended operating free-air temperature range, C_L ≤ 100 pF (unless otherwise noted)
PARAMETER
FROM
(INPUT)
TO
(OUTPUT)
STANDARD MODE
I²C BUS
MIN
MAX
t_pv
Output data valid
(in general-purpose output mode)
SCL
P port
400
t_ps
Shutdown data valid
t_w
EN pulse duration
EN (low)
P port (high)
60
60
FAST MODE
I²C BUS
MIN
MAX
400
60
60
UNIT
ns
μs
μs
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