MAX1739EEP+ Maxim Integrated Products, MAX1739EEP+ Datasheet - Page 23

• Manufacturer Part Number: MAX1739EEP+
• Description: Display Drivers Wide Brightness Rang e CCFL Backlight Con
• Manufacturer: Maxim Integrated Products

Specifications of MAX1739EEP+

• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

The 5-bit brightness register corresponds with the 5-bit
brightness code used in the dimming control (see
Dimming Range). BRIGHT4–BRIGHT0 = 0b00000 sets
minimum brightness, and BRIGHT4–BRIGHT0 =
0b11111 sets maximum brightness. The SMBus inter-
face does not control whether the device regulates the
current by analog dimming, DPWM dimming, or both;
this is done by MINDAC (Table 2).
Table 6. Commands Description
*The hexadecimal command byte shown is recommended for maximum forward compatibility with future MAXIM products.
PROTOCOL
Read and
Read and
Read and
R OR W
Read
Read
Read
Read
Write
Write
Write
Only
Only
Only
Only
[BRIGHT4–BRIGHT0] (POR = 0b10111)
COMMAND
0b0XXX
0b0XXX
0b0XXX
0b0XXX
0b10XX
0b11XX
0b11XX
BYTE*
XXXX
XXX0
XXX1
XX01
XX10
XX11
XX00
0x01
0x02
0x03
0x04
0x40
0xFE
0xFF
______________________________________________________________________________________
STATE
0x4D
POR
0x17
0xF9
0x96
0x00
0xBF
0x96
Brightness Register
ChipRev7
STATUS1 STATUS0
BRIGHT4
ChipID7
ChipID7
MfgID7
(MSB)
(MSB)
BIT 7
0
1
0
0
1
ChipRev6
BRIGHT3
ChipID6
ChipID6
MfgID6
BIT 6
0
0
0
1
0
CCFL Backlight Controllers
ChipRev5
BRIGHT2
ChipID5
ChipID5
MfgID5
BIT 5
DATA REGISTER BIT ASSIGNMENT
0
1
0
0
0
0
Wide Brightness Range
The 3-bit shutdown-mode register configures the oper-
ation of the device when the SH/SUS pin is toggled as
described in Table 7. The shutdown-mode register can
also be used to shut off directly the CCFL, regardless
of the SH/SUS state (Table 8).
ChipRev4
BRIGHT4
BRIGHT1
ChipID4
ChipID4
MfgID4
(MSB)
BIT 4
1
1
0
0
1
ChipRev3
[SHMD2–SHMD0] (POR = 0b001)
BRIGHT3
BRIGHT0
ChipID3
ChipID3
MfgID3
BIT 3
(LSB)
1
0
0
1
0
Shutdown-Mode Register
ChipRev2
BRIGHT2
ChipID2
ChipID2
SHMD2
MfgID2
BIT 2
1
0
1
1
1
ChipRev1
STATUS1
BRIGHT1
ChipID1
ChipID1
SHMD1
MfgID1
BIT 1
1
0
0
1
ChipRev0
BRIGHT0
STATUS0
ChipID0
ChipID0
SHMD0
MfgID0
(LSB)
BIT 0
(LSB)
0
0
1
0
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