MAX6966 Maxim, MAX6966 Datasheet - Page 17

• Manufacturer Part Number: MAX6966
• Description: The MAX6966/MAX6967 serial-interfaced peripherals provide microprocessors with 10 I/O ports rated to 7V
• Manufacturer: Maxim

Each output port’s individual constant-current sink can
be set to be either half or full global current. The indi-
vidual currents are set by the output current registers
(Table
register
Table 7. Output Current Register Format
Output P0 is set to half constant current
Output P0 is set to full constant current
Output P1 is set to half constant current
Output P1 is set to full constant current
Output P2 is set to half constant current
Output P2 is set to full constant current
Output P3 is set to half constant current
Output P3 is set to full constant current
Output P4 is set to half constant current
Output P4 is set to full constant current
Output P5 is set to half constant current
Output P5 is set to full constant current
Output P6 is set to half constant current
Output P6 is set to full constant current
Output P7 is set to half constant current
Output P7 is set to full constant current
Output P8 is set to half constant current
Output P8 is set to full constant current
Output P9 is set to half constant current
Output P9 is set to full constant current
OUTPUT CURRENT IOUT70
OUTPUT CURRENT IOUT98
10-Port Constant-Current LED Drivers and I/O
7). The global current is set by the global current
(Table
REGISTER
8).
______________________________________________________________________________________
Expanders with PWM Intensity Control
Output Current Registers
R/W
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
0
1
CODE (HEX)
ADDRESS
0x13
0x14
IOUT
Each output current can be set individually to best suit
the maximum operating current of an LED load, or even
adjusted on the fly to double the effective intensity con-
trol range of each output. When the global current reg-
ister is set to maximum, the individual current selection
is 10mA (half) or 20mA (full).
D7
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
7
0
1
0
IOUT
D6
X
6
X
X
X
X
X
X
X
X
X
X
X
X
0
1
X
X
0
X
X
X
X
IOUT
D5
X
5
X
X
X
X
X
X
X
X
X
X
0
1
X
X
X
X
0
X
X
X
X
REGISTER DATA
IOUT
D4
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
4
0
1
0
IOUT
D3
X
3
X
X
X
X
X
X
0
1
X
X
X
X
X
X
X
X
0
X
X
X
X
IOUT
D2
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
2
0
1
0
IOUT
IOUT9 IOUT8
IOUT9 IOUT8
D1
1
X
X
0
1
X
X
X
X
X
X
X
X
X
X
X
X
X
X
0
1
IOUT
D0
0
0
1
X
X
X
X
X
X
X
X
X
X
X
X
X
X
0
1
X
X
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