TCA6408_09 Datasheet, PDF (3/31 Pages) Texas Instruments – LOW-VOLTAGE 8-BIT I2C AND SMBus I/O EXPANDER WITH INTERRUPT OUTPUT, RESET, AND CONFIGURATION REGISTERS

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TCA6408
LOW-VOLTAGE 8-BIT I²C AND SMBus I/O EXPANDER
WITH INTERRUPT OUTPUT, RESET, AND CONFIGURATION REGISTERS
SCPS151C – FEBRUARY 2007 – REVISED JUNE 2007
ZXY Terminal Assignments
1
2
3
4
A
P3
P2
P1
RESET
B
GND
N.C. ⁽¹⁾
P0
N.C. ⁽¹⁾
C
P4
N.C. ⁽¹⁾
INT
N.C. ⁽¹⁾
D
P5
P6
P7
SCL
(1) N.C. – No internal connection
5
ADDR
V_CCI
V_CCP
SDA
TSSOP
(PW)
PIN NUMBER
QFN
(RGT)
1
15
2
16
3
1
BGA
(ZXY)
B5
A5
A4
4
2
B3
5
3
A3
6
4
A2
7
5
A1
8
6
B1
9
7
C1
10
8
D1
11
9
D2
12
10
D3
13
11
C3
14
12
D4
15
13
D5
16
14
C5
TERMINAL FUNCTIONS
NAME
DESCRIPTION
V_CCI
ADDR
RESET
P0
P1
P2
P3
GND
P4
P5
P6
P7
INT
SCL
SDA
V_CCP
Supply voltage of I²C bus. Connect directly to the V_CC of the external I²C master.
Provides voltage level translation.
Address input. Connect directly to V_CCP or ground.
Active-low reset input. Connect to V_CCP through a pullup resistor, if no active
connection is used.
P port input/output (push-pull design structure). At power on, P0 is configured as
an input.
P port input/output (push-pull design structure). At power on, P1 is configured as
an input.
P port input/output (push-pull design structure). At power on, P2 is configured as
an input.
P port input/output (push-pull design structure). At power on, P3 is configured as
an input.
Ground
P port input/output (push-pull design structure). At power on, P4 is configured as
an input.
P port input/output (push-pull design structure). At power on, P5 is configured as
an input.
P port input/output (push-pull design structure). At power on, P6 is configured as
an input.
P port input/output (push-pull design structure). At power on, P7 is configured as
an input.
Interrupt output. Connect to V_CCI through a pullup resistor.
Serial clock bus. Connect to V_CCI through a pullup resistor.
Serial data bus. Connect to V_CCI through a pullup resistor.
Supply voltage of TCA6408 for P port.
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