STE2001 Datasheet, PDF (4/36 Pages) STMicroelectronics – 65 X 128 SINGLE CHIP LCD CONTROLLER / DRIVER

STE2001
ELECTRICAL CHARACTERISTICS (continued)
Symbol
Parameter
Test Condition
Min. Typ. Max. Unit
I(V_DD1,2,3) Total Supply Current
V_LCD = 7.6V; V_DD =2.8V;
4x charge pump; f_sclk = 0; T_amb
= 25°C; no display load; note 3,6
F_osc = 0
80
125
µA
I(V_LDCIN) External LCD Supply Voltage
Current
V_DD =2.8V; V_LCD =7.6V;no
display load; f_sclk = 0;
T_amb = 25°C; note 3. F_osc = 0
15
25
µA
Logic Inputs
V_IL Logic LOW voltage level
V_IN = V_ih (t_p < 10µs)
V_SS
0.3
V
V_DD
V_IH Logic HIGH Voltage Level
V_IN = V_il (t_p < 10µs)
0.7
V_DD
V_DD2,3
V
+ 0.5
I_in
Input Current
V_in = V_SS1 or V_DD1
-1
1
µA
Column and Row Driver
R_row ROW Output Resistance
12
20
kohm
R_col Column Output resistance
12
20
kohm
V_col Column Bias voltage accuracy No load
-100
100
mV
V_row Row Bias voltage accuracy
-100
100
mV
LCD Supply Voltage
V_LCD
LCD Supply Voltage accuracy;
Internally generated
V_DD = 2.8V; V_LCD = 7.6V;
fsclk=0; Tamb=25 C;
no display load; note 2, 3, 6 & 7
-300
300
mV
TC Temperature coefficient
00
-550
PPM/°C
01
-1350
PPM/°C
10
-1650
PPM/°C
11
-2650
PPM/°C
Notes: 1. The maximum possible V_LCD voltage that can be generated is dependent on voltage, temperature and (display) load.
2. Internal clock
3. When f_sclk = 0 there is no interface clock.
4. Power-down mode. During power-down all static currents are switched-off.
5. If external V_LCD, the display load current is not transmitted to I_DD
6. Tolerance depends on the temperature; (typically zero at T_amb = 27°C), maximum tolerance values are measured at the temper-
ature range limit.
7. For TC0 to TC3
AC OPERATION
(V_DD1 = 1.9 to V_DD2,3 + 0.5V; V_DD2,3 = 2.4 to 4.5 V; V_ss1,2= 0V; V_LCD = 4.5 to 9V; T_amb =-40 to 85°C; unless otherwise
spec ified)
Symbol
Parameter
Test Condition
Min. Typ. Max. Unit
INTERNAL OSCILLATOR
F_OSC Internal Oscillator frequency
V_DD = 2.8V;
20
38
70
kHz
F_EXT External Oscillator frequency
20
38
100
kHz
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