BD8132FV_09 Datasheet, PDF (6/21 Pages) Rohm – High-precision Gamma Correction ICs with built-in DAC

BD8132FV, BD8139AEFV
Technical Note
●Pin Assignment Diagram
[BD8132FV]
LATCH
SDIN
CLK
SDOUT
GND
R/W
CS
MEMDO
MEMDI
OSC
DVCC
NC
VCC
VCC
REFIN
VDAC
CT
DGND
GND
GND
●Block Diagram
V0
V1
V2
V3
V4
V5
V6
V7
V8
V9
VA
VB
VC
VD
VE
VF
VG
VH
Vcom
FB
REFIN
15
DVCC 100kΩ
VREF ^100kΩ
TSD
Register 0
Register 1
DVCC ₁₁
DVCC
CS ⁷
R/W ⁶
MENDI ⁹
MENDO ⁸
AUTO
Read
LATCH ₁
CLK ₃
SDIN 2
SDOUT ⁴
Serial
I/F
CT ¹⁷
Power
On
Reset
DGND18
DGND
GND
5
GND
Register 2
Register 3
Register 4
Register 5
Register 6
Register 7
Register 8
Register 9
Register A
Register B
Register C
Register D
Register E
Register F
Register G
Register H
Register I
VDAC
16
VCC
13
VCC
VDAC
VDAC
VCC
×2
×2
××22
40 ^V0
39 ^V1
38 ^V2
DAC
LOGIC
×2
37 V3
×2
36 ^V4
×2 ³⁵ V5
×2
34 V6
×2
33 V7
×2
32 V8
××22 ³¹ V9
VDAC
×2
30 ^VA
×2
29 _VB
DAC
LOGIC
×2
28 _VC
×2
27 VD
OSC
10
21
OSC FB
×2
26 VE
×2
25 _VF
×2
24 VG
×2
23 _VH
22 ^Vcom
Fig. 19 Pin Assignment Diagram & Block Diagram
●Pin Name and Function
Pin Pin
No. name
Function
Pin
No.
1 LATCH Serial latch input
21
2 SDIN Serial data input
22
3
CLK Serial clock input
23
4 SDOUT Serial data output
24
5
GND GND input
25
6
R/W Auto-read on/off input (On = Low, Off = High) 26
7
CS External memory selection output
27
8 MEMDO External memory output data signal
28
9 MEMDI External memory input data signal
29
10 OSC Tuning clock I/O
30
11 DVCC Logic power supply input
31
12
NC —
32
13
VCC Buffer amp power supply input
33
14
VCC Buffer amp power supply input
34
15 REFIN DAC reference input
35
16 VDAC DAC voltage output
36
17
CT Power-on reset capacitance connection pin 37
18 DGND DAC GND input
38
19 GND GND input
39
20 GND GND input
40
Pin
name
FB
Vcom
VH
VG
VF
VE
VD
VC
VB
VA
V9
V8
V7
V6
V5
V4
V3
V2
V1
V0
Function
Vcom amp negative feedback input
Vcom output pin
Gamma correction output pin
Gamma correction output pin
Gamma correction output pin
Gamma correction output pin
Gamma correction output pin
Gamma correction output pin
Gamma correction output pin
Gamma correction output pin
Gamma correction output pin
Gamma correction output pin
Gamma correction output pin
Gamma correction output pin
Gamma correction output pin
Gamma correction output pin
Gamma correction output pin
Gamma correction output pin
Gamma correction output pin
Gamma correction output pin
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6/20
2009.07 - Rev.B