BD6086GU_11 ROHM [Rohm], BD6086GU_11 Datasheet - Page 72

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

● Description of REG Operations
© 2011 ROHM Co., Ltd. All rights reserved.
www.rohm.com
BD6086GU
REG control method
About REG* (I/O voltage) activation
ON/OFF control and normal mode/low power consumption mode control available for both register settings and terminal input
When REG* is output as a VIO voltage, activation must take place as shown below.
When using an external power supply as VIO voltage, it is necessary to start as follows.
(Register)
REG*ON
REG2VSEL
REG ＊ CNT
0
0
1
1
0
0
1
1
L
H
REG*EN(External terminal control)
REG2EN
REG*MD
（ External terminal control ）
（ External terminal control ）
VIO (force)
RESETB
(External terminal control)
VBAT （ force ）
REG*O （ output ）
Register access
RESETB
(=VIO voltage)
VBAT (force)
(Terminal)
REG*EN
REG ＊ MD
(*1) This sequence is the case where REG*O is used as I/O voltage.
(*2) When low consumption mode is unnecessary, REG2 EN=REG2MD (simultaneous control) is possible.
(*3) REG* should perform release of RESETB at the time of the normal mode.
(*4) The simultaneous timing of REG*EN="L" and RESETB= “L” is also OK.
REG2
1.8V
1.5V
H
H
L
L
H
H
L
L
When you carry out external force of the I/O voltage, please start as follows in consideration of
the specification of an external power supply.
However, please take into consideration the REG2 standup time (Min:2ms) at the time of the normal mode in that case.
However, it is prohibition to carry out REG*EN= “L” before RESETB= “L” .
Standby
Please perform release of RESETB after the standup of VIO and VGPIO.
It is prohibition to bring down VIO and VGPIO before RESETB="L."
Moreover, when VIO and VGPIO are another power supplies, please start VIO voltage first.
impossible
Low consumption
ON/OFF control
Low consumption
Min ： 7.5ms (*2)
mode
Normal
Normal
Normal
REG ＊
REG*
OFF
ON
ON
ON
Min ： 2ms(*2)
Normal mode
＊ 1 or 2 are shown.
Register access is possible.
possible
72/80
registor
REG ＊ CNT
REG ＊ ON
Standby
impossible
Min ： 0ms (*4)
REG control Equivalent circuit diagram
Normal/
Low consumption
ON/OFF
Technical Note
2011.04 - Rev.A
REG ＊