TCA6507_10 Datasheet, PDF (20/32 Pages) Texas Instruments – LOW-VOLTAGE 7-BIT I2C AND SMBus LED DRIVER WITH INTENSITY CONTROL AND SHUTDOWN

TCA6507
LOW-VOLTAGE 7-BIT I²C AND SMBus LED DRIVER
WITH INTENSITY CONTROL AND SHUTDOWN
SCPS164B – MAY 2007 – REVISED NOVEMBER 2007
PARAMETER MEASUREMENT INFORMATION
V_CC
SDA
DUT
R_L = 1 kΩ
C_L = 50 pF
(see Note A)
SDA LOAD CONFIGURATION
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Three Bytes for Complete
Device Programming
Stop
Condition
(P)
Start
Condition
(S)
Address
Bit 7
(MSB)
Address
Bit 6
Address
Bit 1
R/W
Bit 0
(LSB)
ACK
(A)
Data
Bit 7
(MSB)
Data
Stop
Bit 0 Condition
(LSB)
(P)
SCL
SDA
t_scl
t_sch
t_icr
t_buf
t_icf
t_PHL
t_sts
t_sp
t_PLH
t_icf
t_sth
Start or
Repeat Start
Condition
t_icr
t_sds
t_sdh
Repeat Start
Condition
VOLTAGE WAVEFORMS
t_sps
Stop
Condition
0.7 × V_CC
0.3 × V_CC
0.7 × V_CC
0.3 × V_CC
BYTE
1
2
3
DESCRIPTION
I²C address
Command
P-port data
A. C_L includes probe and jig capacitance.
B. All inputs are supplied by generators having the following characteristics: PRR ≤ 10 MHz, Z_O = 50 Ω, t_r/t_f ≤ 30 ns.
C. All parameters and waveforms are not applicable to all devices.
Figure 14. I²C Interface Load Circuit and Voltage Waveforms
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