S1D1 Epson Electronics America, Inc., S1D1 Datasheet - Page 500

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

S1D15710 Series
16. TEMPERATURE SENSOR CIRCUIT
Both the S1D15710
terminals having a temperature gradient of 11.4mV/ C (Typ.). By controlling the liquid crystal drive voltage at V
inputting an electric volume register value corresponding to the temperature sensor output value from the MPU enables
liquid crystal to display appropriate light and shade over a wide range of temperatures.
Build a system to compensate for variations in the output voltage by feeding back the output voltage value sampled at
a constant temperature to the MPU and store it as the standard voltage in order to achieve higher control of the liquid
crystal drive voltage.
1. Terminal description
*Terminals related to the temperature sensor circuit are allocated to TEST 1 and 2, and are named V
and SVS1 for TEST2. Use the temperature sensor as indicated in the table below. When not in use, fix each terminal
at HIGH.
2. Electrical characteristics
11–62
Operating voltage
Output voltage
Output voltage
temperature gradient
Output voltage
linearity
Output voltage
setup time
Pin name
SVS1
V
Operating current
SEN1
Item
Power
I/O
O
*
10
Symbol
**
V
V
SVS
t
I
operation voltage to V
Analog voltage output terminal of temperature sensor. Monitor
the output voltage to V
SEN
SEN
Power terminal of the temperature sensor. Apply compulsory
GRA
SEN
VL
and S1D15710
(V
(V
(V
(V
Ta=25 C
DD
DD
DD
DD
standard)
standard) Ta=–40 C
standard) Ta=25 C
standard) Ta=85 C
*
11
Condition
**
*1
*2
*3
have built-in temperature sensor circuits with analog voltage output
DD
DD
.
Description
EPSON
.
–4.35
–3.48
–2.92
Min.
–5.5
–1.5
100
9.4
Specification value
–
–3.62
–2.88
–2.20
Typ.
–5.0
11.4
40
–
–
–2.89
–2.28
–1.47
Max.
–4.5
13.4
150
1.5
–
mV/ C
Unit
mS
%
V
V
A
SEN1
Number of
Applicable
for TEST1
Rev. 1.1a
pins
V
V
V
V
SVS1
SVS1
1
PIN
1
SEN1
SEN1
SEN1
SEN1
5
by