BD6086GU_11 ROHM [Rohm], BD6086GU_11 Datasheet - Page 61

• Manufacturer Part Number: BD6086GU_11
• Description: 13LEDs ALC* Flash and Illumination
• Manufacturer: ROHM [Rohm]

● Key Backlight Controller
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BD6086GU
・ Capable of turning ON or OFF the key backlight according to the register setting or via the automatic light control
・ Capable of adjusting illumination (ON time) according to the Duty setting via the built-in PWM (PWM frequency:
・ Determines a key backlight PWM frequency based on an internal clock rate of 1MHz. This value is identical to that at
・ Enables the selection of complementary or open drain for output and allows diversion to GPO.
・ Uses a VGPIO applied voltage as a logic level (during CMOS output setting and input setting).
・ Mandatory to supply voltage to VGPIO for key backlight controller operations.
module.
488Hz) and fade-in/fade-out via the slope function which steps PWM Duty at time intervals set in the KBSLP register.
Typ (1MHx).
When open drain output is selected, a pull-up resistance may be a desirable location (VPUP) but the condition of
VGPIO ≧ VPUP must be satisfied.
For a key backlight controller operating in conjunction with an auto luminous control (ALC) module
For a key backlight controller capable of ON/OFF control according to register settings
For a key backlight controller to be used as GPO
The register “KBFIX” must be set to 1 to enter the register setting mode.
The register "KBSLP (1:0)” is set to 00 (without slope).
When “H” level output takes place as a GPO, the register “MDTY (3:0)”must be set to Fh. In contrast, when "L"
level output takes place, the MDTY (3.0) must be set to 0h instead.
The register “KBFIX” must be set to 0 to enter the auto luminous control mode.
The ON/OFF condition to illumination intensity is set in the registers CTH (3:0) and CHYS (1:0).
The ON/OFF patterns of the key backlight are set in the registers MDTY (3:0) and KBSLP (1:0).
(For details of auto luminous control module setting, refer to ● Description of Auto Luminous Control Module
Operations.)
The register “KBFIX” must be set to 1 to enter the register setting mode.
The slope time is set in the register “KBSLP (1:0).”
When the key backlight is turned ON, data equivalent to illumination intensity must be set in MDTY (3.0). When
it is turned OFF, “0h" must be set instead.
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Technical Note
2011.04 - Rev.A