BU9728AKV_08 Datasheet, PDF (2/24 Pages) Rohm – For 128-140 Segment type LCD LCD Segment Driver

● Electrical Characteristics (BU9728AKV)
DC Characteristics (VDD=2.5～5.5V, VSS=0V, Ta=25degree, unless otherwise specified)
Parameter
Symbo
l
Min.
Limit
Typ.
Uni
Max.
t
Condition
“H” level input voltage
VIH1 0.8×VDD -
VDD
V
VO=0.9×VDD
or 0.1×VDD
“L” level input voltage
VIL1
0
LCD Driver on resistance
RON
-
“L” level Input current1
IIL1
-
-
0.2×VDD
V
VO=0.1×VDD
or 0.9×VDD
-
30
kΩ |△VON|=0.1V
-
100
μA VIN=0
“L” level Input current2
IIL2
-
-
2
μA VIN=0
“H” level Input current
IIH
-2
-
-
μA VIN=VDD
Input capacitance
CI
-
5
-
pF
-
0.05
1
μA ^*2 Display OFF
Power consumption
IDD
-
40
80
μA ^*3 Display ON
-
100
250
μA ^*4 MPU Access
*1: LCD Driver on resistance is not included internal power supply impedance
*2: V3=0V, All input terminal are connected to VDD or VSS.
*3: V3=0V, Rf=470kΩ, except of OSC1 terminals are connected to VDD or VSS.
*4: V3=0V, Rf=470kΩ, fSCK=200kHz
Terminal
SC1, SD, SCK,
______________ __________ _______________________
C / D, C S, RESET
SEG0～31, COM0～3
_______________________
RESET
OSC1, SD, SCK,
______________ __________
C / D, C S
OSC1, SD, SCK,
______________ __________ _______________________
C / D, C S, RESET
______________ __________
SD, SCK, C / D , C S
VDD
AC Characteristics (VDD=2.5～5.5V, VSS=0V, Ta=25degree, unless otherwise specified)
Parameter
Symbo
Limit
l
Min. Typ. Max.
Unit
Condition
SCK rise time
tTLH
-
- 100 ns
SCK fall time
tTHL
-
- 100 ns
SCK cycle time
tCYC 800 -
-
ns
Wait time for command
tWAIT 800 -
-
ns
SCK pulse width ”H”
tWH1 300 -
-
ns
SCK pulse width ”L”
tWL1 300 -
-
ns
SD setup time
tSU1 100 -
-
ns
SD hold time
tH1 100 -
-
ns
CS pulse width ”H”
tWH2 300 -
-
ns
CS pulse width ”L”
tWL2 6400 -
-
ns
CS setup time
tSU2 100 -
-
ns
CS hold time
tH2 100 -
-
ns
C/D setup time
tSU3 100 -
-
ns
C/D hold time
C/D – CS time *5
tH3 100 -
-
ns
Based on SCK 8^th clock rising
__________
tCCH 100 -
-
ns Based on C S rising
C/D – SCK time *5
tSCH 100 -
-
ns
Based o SCK 8^th clock falling
*5: Should satisfy either one condition
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