DESCRIPTION
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SA8807A
96 SEGMENT LIQUID CRYSTAL DISPLAY DRIVER
SERIAL (SPI) INTERFACE
PIN CONNECTIONS
4076
PDS039-SA8807-001 REV. C 11-09-95
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.
Package: DIP-40
FEATURES
Drives up to 96 segments
Serial (SPI) interface with Read/Write
capability
Operates over a wide temperature
range
External contrast control
Low power CMOS
GND
VR[0]
VR[1]
VR[2]
CLK
VR[3]
M3
VI
NC
DR-00580
SCK
MOSI
MISO
VS[20]
VS[21]
VS[22]
VS[23]
RES
END
DD
CE
V
VS[7]
VS[3]
VS[0]
VS[1]
VS[2]
VS[4]
VS[5]
VS[6]
VS[8]
VS[18]
VS[11]
VS[9]
VS[10]
VS[12]
VS[13]
VS[14]
VS[15]
VS[16]
VS[17]
VS[19]
SA8807A
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PIN CONNECTIONS
BLOCK DIAGRAM
Package: PLCC-44
N.C.
N.C.
VS[23]
SCK
DR-00581
MOSI
CE
RES
MOSO
END
VS[14]
VS[22]
VS[20]
VS[21]
V DD
N.C.
VS[18]
VS[19]
VS[17]
VS[15]
VS[16]
VS[9]
VS[12]
VS[13]
VS[10]
VS[11]
N.C.
CLK
GND
M3
V1
VS[8]
VS[7]
VS[5]
VS[6]
VR[2]
VR[0]
VR[1]
VR[3]
N.C.
VS[0]
VS[1]
VS[2]
VS[3]
VS[4]
SA8807A
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ABSOLUTE MAXIMUM RATINGS*
Parameter
Symbol
Min
Max
Unit
Supply Voltage
V
DD
-V
SS
-0.3
6.0
V
Current on any pin
I
PIN
-150
+150
mA
Storage Temperature
T
STG
-40
+125
C
Operating Temperature
T
O
-25
+85
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 -10C to +70C
#
, V
DD
= 5V, V
SS
= 0V unless otherwise
specified.)
Parameter
Symbol
Min
Typ
Max Unit Condition
Supply Voltage
V
DD
-V
SS
3.0
5.0
5.5
V
Supply Current
I
DD
100
A
LCD ON Voltages
V
ON
V
DD
& V
SS
V
LCD OFF Voltages
V
OFF
1/3V
DD
& 2/3 V
DD
V
#
Extended Operating Temperature Range available on request.
SA8807A
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SERIAL INTERFACE TIMING
Limits (All Types)
Characteristic
V
DD
= 3.3V V
DD
= 5V
Unit
Min
Max
Min
Max
1
Chip Enable set-up time
200
100
ns
2
Chip Enable clock hold time
250
125
ns
3
Clock width high
400
200
ns
4
Clock width low
400
200
ns
5
Data In to clock set-up time
200
100
ns
6
Clock to Data propagation delay
200
100
ns
7
Chip Disable to output high Z
200
100
ns
8
Data In after clock hold time
200
100
ns
Ref
No
DR-00846
S C K
C E
MIS0
5 . 0 0
6
5 . 0 0
7
SA8807A
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PIN DESCRIPTION
Pin
Pin
PLCC-44 DIP-40
26
13
GND
Ground
13
1
V
DD
Positive Supply Voltage
18
6
SCK
(SPI) Serial clock input
19
7
MOSI
(SPI) Master Out: Slave In
20
8
MISO
(SPI) Master In: Slave Out
21
9
CE
Chip Enable input
22
10
RES
Reset input
23
11
END
Divider Enable
25
12
CLK
Oscillator or clock input
27
14
M3
3 / 4 Backplane enable input
28
15
V1
LCD Voltage input (Contrast)
35
21
VS[0]
LCD segment driver outputs
36
22
VS[1]
37
23
VS[2]
38
24
VS[3]
39
25
VS[4]
40
26
VS[5]
41
27
VS[6]
42
28
VS[7]
43
29
VS[8]
1
30
VS[9]
2
31
VS[10]
3
32
VS[11]
4
33
VS[12]
5
34
VS[13]
6
35
VS[14]
7
36
VS[15]
8
37
VS[16]
9
38
VS[17]
10
39
VS[18]
11
40
VS[19]
Designation Description
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