OM4068 Datasheet, PDF (18/28 Pages) NXP Semiconductors – LCD driver for low multiplex rates

Philips Semiconductors
LCD driver for low multiplex rates
Product specification
OM4068
DC CHARACTERISTICS
V_DD = 2.5 to 5.5 V; V_SS = 0 V; V_LCD = 3.5 to 6.5 V; T_amb = −40 to +105 °C; unless otherwise specified.
SYMBOL
PARAMETER
CONDITIONS
MIN. TYP. MAX. UNIT
Supplies
V_DD
V_LCD
I_DD
supply voltage
LCD supply voltage
supply current
I_LCD
V_LCD current
V_POR
Logic
V_IL
V_IH
I_OL
I_OH
power-on reset voltage level
LOW-level input voltage
HIGH-level input voltage
LOW-level output current (SDOUT)
HIGH-level output current (SDOUT)
I_pu
pull-up current M1 and M0
I_L
leakage current
Segment and backplane outputs
R_(o)seg
segment output resistance
SEG1 to SEG32
R_(o)back
backplane output resistance
BP1 to BP3
V_{seg(bias)(tol)} bias tolerance SEG1 to SEG32
V_{back(bias)(tol)} bias tolerance BP1, BP2 and BP3
power-down state;
note 1
normal mode;
f_osc = intern;
notes 2 and 3
power-down state;
note 1
normal mode;
f_osc = intern;
notes 3 and 4
note 5
V_SS + 2.5 −
V_SS + 3.5 −
−
4
−
12
−
−
−
−
0.8
1.25
V_OL = 0.5 V; V_DD = 5 V
V_OH = V_DD − 0.5 V;
V_DD = 5 V
V_I = V_SS
V_I = V_DD or V_SS
V_SS
0.7V_DD
1.0
−
0.04
−1
−
−
−
−
0.15
−
note 6
note 6
note 7
note 7
−
15
−
15
−100
0
−100
0
5.5
V
6.5
V
10
µA
25
µA
1.5
µA
40
µA
1.6
V
0.3V_DD V
V_DD
V
−
mA
−1
mA
1
µA
+1
µA
40
kΩ
40
kΩ
+100 mV
+100 mV
Notes
1. Power-down state. After power-on the chip is in power-down state as long as the serial clock is not activated. During
power-down all static currents are switched off except the power-on reset block.
2. Output SDOUT is open-circuit; inputs at V_DD or V_SS; bus inactive.
3. Drive mode: static, duplex and triplex.
4. LCD outputs are open-circuit, C_L = 50 pF typical, inputs at V_DD or V_SS; bus inactive.
5. Resets all logic when V_DD < V_POR.
6. Resistance of output terminal (S1 to S32 and BP1, BP2 and BP3) with a load current of 20 µA; outputs measured
one at a time.
7. LCD outputs open-circuits.
1998 Jun 18
18