BU2506FV,BU2505FV
Technical Note
6/10
www.rohm.com
2011.04 - Rev.B
2011ROHM Co., Ltd. All rights reserved.
D0D1D2D3
D13
D12
D11
DI
CLK
LD
DACOUT
D4
ADDRESS
LSB
ADDRESS
MSB
DATA
MSB
DATA
LSB
Command Transmission
1) Reverse = open (or VCC short-circuit) setting
(1) Data format
(2) Data timing diagram
D3
D2
D1
D0
Address Selection
0
Inconsequential
0
1
AO1 selection
0
1
0
AO2 selection
0
1
AO3 selection
0
1
0
AO4 selection
0
1
0
1
AO5 selection
0
1
0
AO6 selection
0
1
AO7 selection
1
0
AO8 selection
1
0
1
AO9 selection
*1
1
0
1
0
AO10 selection
*1
1
0
1
Inconsequential
1
0
Inconsequential
1
0
1
Inconsequential
1
0
Inconsequential
1
Inconsequential
D13
D12
D11
D10
D9
D8
D7
D6
D5
D4
D/A output (VrefH=VDD, VrefL=VSS)
0
VrefL
0
1
(VrefH-VrefL)/1024×1+VrefL
0
1
0
(VrefH-VrefL)/1024×2+VrefL
0
1
(VrefH-VrefL)/1024×3+VrefL
:
1
0
(VrefH-VrefL)/1024×1022+VrefL
1
(VrefH-VrefL)/1024×1023+VrefL
2) Reverse = L setting
(1) Data format
(2) Data timing diagram
D3
D2
D1
D0
Address selection
0
Inconsequential
0
1
AO1 selection
0
1
0
AO2 selection
0
1
AO3 selection
0
1
0
AO4 selection
0
1
0
1
AO5 selection
0
1
0
AO6 selection
0
1
AO7 selection
1
0
AO8 selection
1
0
1
AO9 selection
*1
1
0
1
0
AO10 selection
*1
1
0
1
Inconsequential
1
0
Inconsequential
1
0
1
Inconsequential
1
0
Inconsequential
1
Inconsequential
D4
D5
D6
D7
D8
D9
D10
D11
D12
D13
D/A output (VrefH=VDD, VrefL=VSS)
0
VrefL
1
0
(VrefH-VrefL)/1024×1+VrefL
0
1
0
(VrefH-VrefL)/1024×2+VrefL
1
0
(VrefH-VrefL)/1024×3+VrefL
:
0
1
(VrefH-VrefL)/1024×1022+VrefL
1
(VrefH-VrefL)/1024×1023+VrefL
*1 In the BU2506FV, this channel is for testing, therefore, do not designate.
For D/A converter output setting
For address selection
For D/A converter output setting
For address selection
D0D1
D2D3
D4
D5
D6
DI
CLK
LD
DACOUT
D13
DATA
MSB
DATA
LSB
ADDRESS
LSB
ADDRESS
MSB
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