bu9798kv ROHM Co. Ltd., bu9798kv Datasheet - Page 2

• Manufacturer Part Number: bu9798kv
• Description: Lcd Control Driver For Segment Type Lcd Display
• Manufacturer: ROHM Co. Ltd.

VLCD
INHb
CLKIN
VDD
VSS
*1 In case, internal regulator do not use. When you use internal regulator, please add load regulation specified at page3
*2 In case, power save mode 1 and frame inversion setting
○Block diagrams
○ Electrical Characteristics
“H” level input current
“H” level input voltage
“L” level input voltage
“L” level input current
Supply current (＊2)
( Ta=-30~75degree, VDD=1.8V~3.6V, VLCD=3.3V~5.5V, VSS=0 ; unless otherwise specified )
Hysteresis width
“H” level output
“L” level output
Ref Voltage
voltage (＊1)
voltage (＊3)
Circuit
LCD voltage
OSCILLATOR
VSS
Generator
Parameter
TEST1
(＊3)
Vreg
SELECTOR
Power On Reset
BIAS
LCD
IstVLCD
IVLCD1
IVLCD2
IVLCD3
VSS2
Symbol
IstVDD
IVDD1
IVDD2
VOH1
VOH2
VOH3
VOH4
VOL1
VOL2
VOL3
VOL4
IIH1
VIH
IIL1
VIL
VH
common
counter
COM0……COM3 SEG0 ……………………………… SEG48
common
blink timing
driver
VLCD-0.4
VLCD-0.4
VLCD-0.6
generator
CSB
VDD-0.6
0.8VDD
MIN
VSS
Command register
serial inter face
-5
Data Decoder
-
-
-
-
-
-
-
-
-
-
-
-
-
IF FILTER
SD
Segment
driver
GPO data latch
DDRAM
Limit
SCL
TYP
0.11
0.2
0.5
90
10
25
30
driver/GPO
3
8
Segment
-
-
-
-
-
-
-
-
-
-
-
*3 Iload : In case, load current from only one port
GPO/LED
Controller
driver/LED
0.2VDD
Segment
Controller
PWMOUT
MAX
VDD
Output
Generator
130
0.4
0.4
0.5
0.5
15
40
48
10
15
PWM
5
5
-
-
-
-
-
-
REV. A
Unit
uA
uA
uA
uA
uA
uA
uA
uA
uA
V
V
V
V
V
V
V
V
V
V
V
○Outline drawing
SD, SCL, CSB, CLKIN, TEST1, INHb
SD, SCL, CSB, CLKIN, TEST1, INHb
SCL, INHb, VDD=3.3V, Ta=25degree
SD, SCL, CSB, CLKIN, INHb, VI=3.6V
SD, SCL, CSB, CLKIN, INHb, TEST1, VI=0V
Iload=-50uA, VLCD=5.0V, SEG0~48,
In case, internal regulator do not used
Iload=-50uA, VLCD=5.0V, COM0~3,
IN case, internal regulator do not used
Iload=-1mA,VLCD=5.0V,SEG15~45(GPO mode)
In case, internal regulator do not used
Iload=-1mA, VDD=3.3V, PWMOUT
Iload= 50uA, VLCD=5.0V, SEG0~48
Iload= 50uA, VLCD=5.0V, COM0~3
Iload=1mA, VLCD=5.0V, VDD=3.3V
SEG15~45(GPO mode）, PWMOUT
Iload=20mA, VLCD=5.0V
SEG46~48（LED drive mode）
Input terminal ALL’L’, Display off, Oscillation off
Input terminal ALL’L’, Display off, Oscillation off
VDD=3.3V, Ta=25degree, 1/3bias, fFR=64Hz,
PWM generate off, All output pin open
VDD=3.3V, Ta=25degree, 1/3bias, fFR=64Hz,
PWM Frequency=500Hz setting, output pin open
VLCD=5.0V, Ta=25degree, 1/3bias、fFR=64Hz,
internal regulator do not used, LED drive mode off, All
output pin open
VLCD=5.0V, Ta=25degree, 1/3bias, fFR=64Hz,
using internal regulator , LED drive mode off, All output pin
open
VLCD=5.0V, Ta=25degree, 1/3bias,
fFR=64Hz, using built-in regulator,
PWM Frequency=500Hz setting, output pin open
Package: VQFP64
BU9798K
Condition
Lot No.
2/4