S1D1 Epson Electronics America, Inc., S1D1 Datasheet - Page 434

• Manufacturer Part Number: S1D1
• Description: LCD Controller-driver With Built-in Character ROM
• Manufacturer: Epson Electronics America, Inc.

16. TEMPERATURE SENSOR CIRCUIT
S1D15705
analog voltage output pins. The S1D15705
throughout a wide temperature range without need for use of supplementary parts by inputting electronic volume control
registration value equivalent signals corresponding to the outputs of the temperature sensor through the MPU to control
the LCD drive voltage V
For LCD drive voltage controls of higher precision, we recommend you to constitute a system which can absorb
deviations of the output voltage by, such as, feeding back sampled output voltages under a certain temperature
environment to the MPU to let it memorize as the reference voltages.
Regarding the specifications of other items than the temperature sensor circuit, such as of the absolute maximum ratings,
DC characteristics, AC characteristics, etc., refer to the specifications for S1D15705
Pin Definitions
Temperature sensor circuit related pins are allocated to TEST1, 2, 3 and 4 and the pin names are TEST1, SVS, V
SEN and SENSEL in the given sequence. The temperature sensor should be used under the pin statuses indicated in
the Table below. When the temperature sensor is not being used, fix respective pins to HIGH.
Electric Characteristics
Rev. 3.1a
Pin names
Operating voltage
Output voltage
Output voltage
temperature gradient
Output voltage linearity
Output voltage setup time
Operating current
SENSEL
V
SEN
SVS
SEN
*
Items
10
**
supply
Power
incorporates a temperatujre sensor circuit with a 11.4mV/ C (typ.) temperature gradient carrying
I/O
O
O
I
5
.
This is the power supply pin for the temperature sensor. Apply
prescribed operating voltage between the V
This is the analog voltage output pin for the temperature sensor.
Monitor the output voltage between the V
Consider to keep this pin open in order not to apply the load
capacitance of wires, etc.
Fix this pin to HIGH.
Codes
V
V
SVS
t
I
SEN
SEN
SEN
GRA
V
L
*
(On the basis of V
(On the basis of V
(On the basis of V
(On the basis of V
10
**
Conditions
Ta = 40 C
Ta = 25 C
Ta = 85 C
Ta = 25 C
makes it possible to provide LCD indications with optimum contrast
*1
*2
*3
EPSON
Pin definitions
DD
DD
DD
DD
)
) –4.35 –3.62 –2.89
) –3.48 –2.88 –2.28
) –2.92 –2.20 –1.47
Min.
–5.5
–1.5
100
9.4
—
Specifications
DD
Typ. Max.
–5.0
11.4
DD
.
40
—
—
.
–4.5
13.4
*
150
1.5
—
00
**
.
mV/ C
Units
mS
S1D15705 Series
%
V
V
A
Applicable
Number
of pins
V
V
V
V
pins
SVS
SVS
SEN
SEN
SEN
SEN
1
1
1
1
10–75
SEN
,