Datasheet

10-Port Constant-Current LED Drivers and I/O
Expanders with PWM Intensity Control
REGISTER DATA
BINARY
HEX
REGISTER
R/W
ADDRESS
CODE
(HEX)
D7 D6 D5 D4 D3 D2 D1 D0
PORT P0 LEVEL OR PWM
X MSB
OUTPUT P0 LEVEL AND PWM
LSB
Port P0 is static-low logic-level logic
port with logic input buffer enabled;
reading this port returns 0. Still active
in shutdown.
X
00000000
0x00
Port P0 is static-high logic-level logic
port (high impedance without external
pullup) or logic input with logic input
buffer enabled; reading this port
returns 0 or 1, depending on external
conditions. Still active in shutdown.
X
00000001
0x01
Port P0 is static-low constant-current
sink (PWM disabled). Logic input
buffer is disabled; reading this port
always returns 0. High impedance in
shutdown.
X
00000010
0x02
Port P0 duty cycle is 3/256 current
sink. GPI logic input buffer is
disabled; reading this port always
returns 0. High impedance in
shutdown.
X
00000011
0x03
Port P0 duty cycle is 4/256 current
sink. GPI logic input buffer is
disabled; reading this port always
returns 0. High impedance in
shutdown.
X
00000100
0x04
—
X—
—
——
—
—
—— —
Port P0 duty cycle is 253/256 current
sink. GPI logic input buffer is
disabled; reading this port always
returns 0. High impedance in
shutdown.
X
11111101
0xFD
Port P0 duty cycle is 254/256 current
sink. GPI logic input buffer is
disabled; reading this port always
returns 0. High impedance in
shutdown.
X
11111110
0xFE
Port P0 is static high impedance
(PWM disabled). GPI logic input
buffer is disabled; reading this port
always returns 0. High impedance in
shutdown.
X
0x00
11111111
0xFF
Table 6. Output Registers Format
MAX6966/MAX6967
Maxim Integrated
15