BU1572GUW, BU1573KV, BU1574KU
Technical Note
2/12
www.rohm.com
2009.04- Rev.B
2009 ROHM Co., Ltd. All rights reserved.
●Electric characteristics
(Unless otherwise specified, VDD=1.50V,VDDIO=2.85V,GND=0.0V,Ta=25℃,fIN=36.0MHz) *1
Parameter
Symbol
Limits
Unit
Condition
MIN.
TYP.
MAX.
Input frequency
fIN
-
36.0
MHz
DCKI (DUTY45%~55%) *2
Operating consumption current
IDD1
-
24
-
mA
At enhance mode setting (36MHz)
Static consumption current
IDDst
-
30
μA
At sleep mode setting, input terminal=GND setting
Input ”H” current
IIH
-10
-
10
μA
VIH=VDDIO
Input ”L” current
IIL
-10
-
10
μA
VIL=GND
Input ”H” voltage 1
VIH1
VDDIO
0.8
-
VDDIO
+0.3
V
Normal input (including input mode of I/O terminal)
Input ”L” voltage 1
VIL1
-0.3
-
VDDIO
0.2
V
Normal input (including input mode of I/O terminal)
Input ”H” voltage 2
VIH2
VDDIO
0.85
-
VDDIO
+0.3
V
Hysteresis input *3
(RESETB, DCKI, LCDCSBI/SDA, LCDWRBI/SDC,
LCDRDBI/I2CDEV0)
Input ”L” voltage 2
VIL2
-0.3
-
VDDIO
0.15
V
Hysteresis input *4
(RESETB, DCKI, LCDCSBI/SDA, LCDWRBI/SDC,
LCDRDBI/I2CDEV0)
Hysteresis voltage width
Vhys
-
0.7
-
V
Hysteresis input *5
(RESETB, DCKI, LCDCSBI/SDA, LCDWRBI/SDC,
LCDRDBI/I2CDEV0)
Output ”H” voltage
VOH
VDDIO
-0.4
-
VDDIO
V
IOH=-1.0mA(DC)
(including output mode of I/O terminal)
Output ”L” voltage
VOL
0.0
-
0.4
V
IOL=1.0mA(DC)
(including output mode of I/O terminal)
*1 : VDDIO=3.00V in case of BU1573KV / BU1574KU
*2 : CAMCKI in case of BU1574KU
*3,*4,*5 : It corresponds with RESETB CAMCKI SDA SDC I2CDEV0 for BU1574KU
●Block Diagram
(BU1572GUW/BU1573KV)
(BU1574KU)
●Recommended Application Circuit
(BU1572GUW/BU1573KV)
(BU1574KU)
LCDDI[17:0]
LCDRS0I/
LCDCSBI/
LCDWRBI
LCDVSI/
LCDHSI/
DCKI
LCDDO[17:0]
LCDRS0O/
LCDCSBO/
LCDWRBO
LCD Controller
BU1572GUW/BU1573KV
CPU
SDA/SDC
LCDRDBI
D[17:0]
RS/
CSB/
WRB
RDB
LCDVSO/
LCDHSO/
DCKO
LCDRS/
LCDCSB/
LCDWRB
LCDDATA[17:0]
LCDRDB
VSYNC/
HSYNC/
DOTCLOCK
VSYNC/
HSYNC/
CLK
PWMO
LED Driver
PWM IN
LCDDI[17:0]
Color correction
Luminance
distinction
Image enhance
Register
I2C interface
LCDRS0/1I
LCDCSBI
LCDWRBI
LCDRDBI
Timing generator
SDA
SDC
LCDVSI
LCDHSI
VLDI
ENAI
DCKI
MSEL0/1/2
RESETB
LCDDO[17:0]
LCDRS0O
LCDCSBO
LCDWRBO
LCDVSO
LCDHSO
VLDO
ENAO
DCKO
Edge
enhancement
Gamma control
PWMO
PWM control
generation
CAMDI[17:0]
Color correction
Luminance
distinction
Image enhance
Register
I2C interface
Timing generator
SDA
SDC
CAMVSI
CAMHSI
CAMCKI
MSEL0/1/2
RESETB
CAMDO[17:0]
CAMVSO
CAMHSO
CAMCKO
PWMO
Edge
enhancement
Gamma control
PWM control
generation
SDC
CAMHSI
CAMVSI
CAMCKI
Image
Processing
IC
CAMDI[7:0]
SDA
Camera
Module
BU1574KU
CAMDO[7:0]
CAMHSO
CAMVSO
CAMCKO
CAMDO[7:0]
CAMHSO
CAMVSO
CAMCKO
CAMDI[7:0]
CAMHSI
CAMVSI
CAMCKI