sames
FEATURES
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•
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SA8807A
96 SEGMENT LIQUID CRYSTAL DISPLAY DRIVER
SERIAL (SPI) INTERFACE
•
•
External contrast control
Low power CMOS
Drives up to 96 segments
Serial (SPI) interface with Read/Write
capability
Operates over a wide temperature
range
DESCRIPTION
The SAMES SA8807A Liquid Crystal
Display (LCD) Driver is capable of driving
up to 96 LCD segments and is designed for
displays having 3 or 4 track multiplexed
backplanes.
The SA8807A includes an on-chip
oscillator. The data exchange is carried
out via the Serial Peripheral Interface (SPI).
This LCD driver is ideal for any micro-
controller based system requiring a liquid
crystal display of up to 12 digits.
The SA8807A integrated circuit is available
in both 40 pin dual-in-line plastic (DIP-40),
as well as 44 pin plastic leaded chip carrier
(PLCC-44) package types.
PIN CONNECTIONS
V DD
VS[20]
VS[21]
VS[22]
VS[23]
SCK
MOSI
MISO
CE
RES
END
CLK
GND
M3
VI
NC
VR[0]
VR[1]
VR[2]
VR[3]
DR-00580
VS[19]
VS[18]
VS[17]
VS[16]
VS[15]
VS[14]
VS[13]
VS[12]
VS[11]
VS[10]
VS[9]
VS[8]
VS[7]
VS[6]
VS[5]
VS[4]
VS[3]
VS[2]
VS[1]
VS[0]
Package: DIP-40
1/14
4076
PDS039-SA8807-001
REV. C
11-09-95
SA8807A
PIN CONNECTIONS
VS[14]
VS[13]
VS[12]
VS[11]
VS[10]
VS[9]
N.C.
VS[8]
VS[7]
VS[6]
VS[5]
VS[15]
VS[16]
VS[17]
VS[18]
VS[19]
N.C.
V DD
VS[20]
VS[21]
VS[22]
VS[23]
VS[4]
VS[3]
VS[2]
VS[1]
VS[0]
N.C.
VR[3]
VR[2]
VR[1]
VR[0]
N.C.
MOSO
SCK
MOSI
DR-00581
GND
M3
CE
RES
END
N.C.
CLK
Package: PLCC-44
BLOCK DIAGRAM
2/14
sames
V1
SA8807A
ABSOLUTE MAXIMUM RATINGS*
Parameter
Supply Voltage
Current on any pin
Storage Temperature
Operating Temperature
Symbol
V
DD
-V
SS
I
PIN
T
STG
T
O
Min
-0.3
-150
-40
-25
Max
6.0
+150
+125
+85
Unit
V
mA
°C
°C
* Stresses above those listed under “Absolute Maximum Ratings” may cause permanent
damage to the device. This is a stress rating only. Functional operation of the device
at these or any other condition above those indicated in the operational sections of this
specification, is not implied. Exposure to Absolute Maximum Ratings for extended
periods may affect device reliability.
ELECTRICAL CHARACTERISTICS
(Over the temperature range -10°C to +70°C
#
, V
DD
= 5V, V
SS
= 0V unless otherwise
specified.)
Parameter
Supply Voltage
Supply Current
LCD ON Voltages
LCD OFF Voltages
#
Symbol
V
DD
-V
SS
I
DD
V
ON
V
OFF
Min
3.0
Typ
5.0
Max Unit
5.5
100
V
µA
V
V
Condition
V
DD
& V
SS
1/3V
DD
& 2/3 V
DD
Extended Operating Temperature Range available on request.
sames
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SA8807A
SERIAL INTERFACE TIMING
Ref
No
1
2
3
4
5
6
7
8
Limits (All Types)
Characteristic
Chip Enable set-up time
Chip Enable clock hold time
Clock width high
Clock width low
Data In to clock set-up time
Clock to Data propagation delay
Chip Disable to output high Z
Data In after clock hold time
200
V
DD
= 3.3V
Min
Max
200
250
400
400
200
200
200
100
V
DD
= 5V
Min
Max
100
125
200
200
100
100
100
Unit
ns
ns
ns
ns
ns
ns
ns
ns
6
MIS0
5 . 0 0
7
5 . 0 0
SCK
CE
DR-00846
4/14
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SA8807A
PIN DESCRIPTION
Pin
Pin
Designation Description
PLCC-44 DIP-40
26
13
GND
Ground
13
1
V
DD
Positive Supply Voltage
18
6
SCK
(SPI) Serial clock input
19
20
21
22
23
25
27
28
35
36
37
38
39
40
41
42
43
1
2
3
4
5
6
7
8
9
10
11
7
8
9
10
11
12
14
15
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
MOSI
MISO
CE
RES
END
CLK
M3
V1
VS[0]
VS[1]
VS[2]
VS[3]
VS[4]
VS[5]
VS[6]
VS[7]
VS[8]
VS[9]
VS[10]
VS[11]
VS[12]
VS[13]
VS[14]
VS[15]
VS[16]
VS[17]
VS[18]
VS[19]
sames
5/14
(SPI) Master Out: Slave In
(SPI) Master In: Slave Out
Chip Enable input
Reset input
Divider Enable
Oscillator or clock input
3 / 4 Backplane enable input
LCD Voltage input (Contrast)
LCD segment driver outputs
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