Overview
The LC78711E is a CMOS LSI that provides graphics
display drawing functions. In addition to implementing
graphics display for NTSC and PAL signals, it provides
two 32
32-dot sprite display patterns and can easily
implement a wide range of displays.
Features
Two-chip structure consisting of this LSI, the
LC78711E, and an external 64-K
4-bit RAM. (An
RGB encoder is built in.)
Graphics drawing controlled by a microprocessor over a
serial interface.
Includes two crystal oscillator systems, one for NTSC
and one for PAL, and these system can be easily
switched using the provided control pin.
The standard clocks and all necessary internal timings
can be generated by connecting two crystals, a
14.31818-MHz crystal for NTSC, and a 17.734476-MHz
crystal for PAL.
Two 32
32-dot sprite patterns provided. Up to two
sprites can be displayed, either two different types or the
same pattern in two different locations.
16 colors from a palette of 4096 colors can be displayed
in graphics screens, and seven colors can be displayed in
sprite patterns.
Y/C signal outputs (two 8-bit D/A converter outputs)
Supports the superimpose function, and provides a
timing signal output.
Provides a color bar signal output function.
Adopts an 8-bit serial data input format for the external
control input.
Package Dimensions
unit: mm
3159-QFP64E
CMOS LSI
63096HA (OT) No. 5476-1/43
SANYO: QFP64E
[LC78711E]
SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110 JAPAN
Graphics Display Processor
LC78711E
Ordering number : EN5476
Pin Assignment
No. 5476-2/43
LC78711E
Parameter
Symbol
Conditions
Ratings
Unit
Maximum supply voltage
V
DD
max
AV
DD
1, DV
DD
1
V
SS
0.3 to V
SS
+ 7.0
V
TEST1, TEST2, TEST4, TEST5, TEST6, CE, DI, CL,
Maximum input voltage
V
IN
max
TEST7, DB0 to DB3, CB, LINE, FSCIN, TEST9, 4FSC2,
V
SS
0.3 to V
DD
+ 0.3
V
TEST12, PALID, HRESET, VRESET, INIT, RESET, N/P1,
N/P2, SON, XIN1, XIN2
TEST3, DO, PSC1, PSC2, WAIT, INT, WE, RAS, A0 to A7,
Maximum output voltage
V
OUT
max
DB0 to DB3, CAS, OE, TEST8, BFP, VSYNC, YS, CSYNC, V
SS
0.3 to V
DD
+ 0.3
V
TEST10, TEST11, FSC0, XOUT1, XOUT2
Allowable power dissipation
Pd max
Ta = 25C
500
mW
Operating temperature
Topr
30 to +85
C
Storage temperature
Tstg
40 to +125
C
Specifications
Absolute Maximum Ratings
No. 5476-3/43
LC78711E
Parameter
Symbol
Conditions
Ratings
Unit
min
typ
max
Supply voltage
V
DD
AV
DD
1, DV
DD
1
4.5
5.0
5.5
V
TEST1, TEST2, TEST4, TEST5, TEST6, CE, DI, TEST7,
V
IH
1
CB, LINE, TEST9, TEST12, PALID, HRESET, VRESET,
0.7 V
DD
1
V
DD
1 + 0.3
V
Input high-level voltage
N/P1, N/P2, SON
V
IH
2
CL, INIT, RESET
0.8 V
DD
1
V
DD
1 + 0.3
V
V
IH
3
DB0 to DB3
2.2
V
DD
1 + 0.3
V
TEST1, TEST2, TEST4, TEST5, TEST6, CE, DI, TEST7,
V
IL
1
CB, LINE, TEST9, TEST12, PALID, HRESET, VRESET,
V
SS
1 0.3
0.3 V
DD
1
V
Input low-level voltage
N/P1, N/P2, SON
V
IL
2
CL, INIT, RESET
V
SS
1 0.3
0.2 V
DD
1
V
V
IL
3
DB0 to DB3
V
SS
1 0.3
0.8
V
F
SCIN
1
XIN1
14.31818
MHz
F
SCIN
2
XIN2
17.73447
MHz
Input frequency
F
SCIN
3
4FSC2: NTSC mode
14.31818
MHz
4FSC2: PAL mode
17.73447
MHz
F
SCIN
4
FSCIN: NTSC mode
3.57954
MHz
FSCIN: PAL mode
4.43361
MHz
Input amplitude
V
IN
1
FSCIN, 4FCS2
0.5
V
DD
1
Vp-p
V
IN
2
XIN1, XIN2
0.5
V
DD
1
Vp-p
Allowable Operating Ranges
at Ta = 30 to +85C, V
SS
= 0 V
Parameter
Symbol
Conditions
Ratings
Unit
min
typ
max
TEST1, TEST2, TEST4, TEST5, TEST6, CE, DI, CL,
Input high-level current
I
IH
1
TEST7, DB0 to DB3, LINE, PALID, HRESET, VRESET,
5
A
INIT, RESET, N/P1, N/P2, SON: V
IN
= DV
DD
1
I
IH
2
CB, TEST9, TEST12: V
IN
= DV
DD
1
30
100
200
A
TEST1, TEST2, TEST4, TEST5, TEST6, CE, DI, CL,
I
IL
1
TEST7, DB0 to DB3, CB, LINE, TEST9, TEST12,
5
A
Input low-level current
HRESET, VRESET, INIT, RESET, N/P1, N/P2, SON:
V
IN
= DV
SS
1
I
IL
2
PALID: V
IN
= DV
SS
1
200
100
30
A
TEST3, DO, PSC1, PSC2, WAIT, INT, BFP, WE, RAS,
Output high-level voltage
V
OH
A0 to A7, CAS, OE, DB0 to DB3, TEST8, VSYNC, YS,
V
DD
1 1
V
DD
1
V
CSYNC, TEST10, TEST11, FSCO: I
OH
= 0.5 mA
TEST3, DO, PSC1, PSC2, WAIT, INT, BFP, WE, RAS,
Output low-level voltage
V
OL
A0 to A7, CAS, OE, DB0 to DB3, TEST8, VSYNC, YS,
V
SS
0.4
V
CSYNC, TEST10, TEST11, FSCO: I
OL
= 2.0 mA
Output off leakage current
I
OFF
DB0 to DB3
5
+5
A
Internal feedback resistance
R
X
XIN1, XIN2, FSCIN, 4FSC2
1
M
Clock duty
fduty
FSCIN, 4FSC2
40
60
%
8-bit D/A converter reference
V
REF
VIDEO1, VIDEO2
2.30
2.50
V
voltage
8-bit D/A converter output
R
DA
VIDEO1, VIDEO2
300
resistance
Operating current drain
I
DD
1
AV
DD
1
26
40
mA
I
DD
2
DV
DD
1
26
40
mA
Electrical Characteristics
at Ta = 30 to +85C, DV
DD
1 = AV
DD
1 = 5 V unless otherwise specified.
No. 5476-4/43
LC78711E
Parameter
Symbol
Conditions
Ratings
Unit
min
typ
max
Minimum input pulse width
t
WH
CL, high-level pulse width
75
ns
t
WL
CL, low-level pulse width
75
ns
Data setup time
t
DS
DI, CL
20
ns
Data hold time
t
DH
DI, CL
20
ns
CE setup time
t
CS
CE, CL
0
ns
CE hold time
t
CH
CE, CL
300
ns
DO setup time
t
DOS
DO, CL
30
ns
Data acquisition time
t
WT
1
Serial data acquisition time
150
ns
Data restart time
t
WT
2
Serial data restart time
1.0
s
Single word write time
t
WORD
DI, CL (1 word = 8 bits)
1.35
s
Electrical Characteristics
at Ta = 25C, V
DD
= 5.0 V, Fscp = 15.625 kHz
No. 5476-5/43
LC78711E
Basic Specifications
Pin no.
Pin
Pin type
I/O
Polarity
Pin function
1
TEST1
Test input
I
Positive
Test input. Must be connected to ground during normal operation.
2
TEST2
Test input
I
Positive
Test input. Must be connected to ground during normal operation.
3
TEST3
Test output
O
Positive
Test output
4
TEST4
Test input
I
Positive
Test input. Must be connected to ground during normal operation.
5
TEST5
Test input
I
Positive
Test input. Must be connected to ground during normal operation.
6
TEST6
Test input
I
Positive
Test input. Must be connected to ground during normal operation.
7
DV
DD
1
Power supply (+5 V)
--
--
Digital system power supply
8
CE
Enable input
I
Positive
Serial I/O data control input
9
DO
Data output
O
Positive
Serial data output
10
DI
Data input
I
Positive
Serial data input
11
CL
Clock input
I
Positive
Serial data I/O clock input
12
PSC1
Monitor 1 output
O
Positive
Serial input monitor signal output
13
PSC2
Monitor 2 output
O
Positive
Command monitor signal output
14
WAIT
Wait signal output
O
Negative
Serial input wait signal output (for use with bit maps)
15
INT
Wait signal output
O
Negative
Serial input wait signal output (for use with the sprite function)
16
TEST7
Test input
I
Positive
Test input. Must be connected to ground during normal operation.
17
DV
SS
1
Ground
--
--
Digital system ground
18
WE
DRAM output
O
Negative
DRAM write enable signal output
19
RAS
DRAM output
O
Negative
DRAM row address strobe signal output
20
A0
DRAM output
I/O
Positive
DRAM address (A0) output (Functions as an input in test mode.)
21
A1
DRAM output
I/O
Positive
DRAM address (A1) output (Functions as an input in test mode.)
22
A2
DRAM output
I/O
Positive
DRAM address (A2) output (Functions as an input in test mode.)
23
A3
DRAM output
I/O
Positive
DRAM address (A3) output (Functions as an input in test mode.)
24
A4
DRAM output
I/O
Positive
DRAM address (A4) output (Functions as an input in test mode.)
25
A5
DRAM output
I/O
Positive
DRAM address (A5) output (Functions as an input in test mode.)
26
A6
DRAM output
I/O
Positive
DRAM address (A6) output (Functions as an input in test mode.)
27
A7
DRAM output
I/O
Positive
DRAM address (A7) output (Functions as an input in test mode.)
28
DB0
DRAM input and output
I/O
Positive
DRAM data (D0) input and output
29
CAS
DRAM output
O
Negative
DRAM column address strobe signal output
30
DB1
DRAM input and output
I/O
Positive
DRAM data (D1) input and output
31
OE
DRAM output
O
Negative
DRAM read enable signal output
32
DB2
DRAM input and output
I/O
Positive
DRAM data (D2) input and output
33
DB3
DRAM input and output
I/O
Positive
DRAM data (D3) input and output
34
CB
Color bar selection
I
Positive
Low: normal mode, high: color bar output
(A pull-down resistor is built in.)
35
TEST8
Test output
O
Positive
Test output
36
AV
SS
1
Ground
--
--
Analog system ground
37
AV
DD
1
Power supply (+5 V)
--
--
Analog system power supply
38
VIDEO1
Video signal (Y) output
O
--
Video (luminance) signal (analog) output (D/A converter output)
39
BIAS
Capacitor connection
O
--
Connections for a ripple exclusion capacitor
40
VIDEO2
Video signal (C) output
O
--
Video (chrominance) signal (analog) output (D/A converter output)
41
BFP
Burst flag signal output
O
Positive
Burst signal output timing flag output
Line count selection
42
LINE
Line count selection
I
--
NTSC mode - Low: 263H, high: 262H
PAL mode - Low: 314H, high: 312H
43
FSCIN
Clock input
I
Positive
Superimpose subcarrier clock input (A feedback resistor is built in.)
44
VSYNC
Vertical synchronization output
O
Negative
Vertical synchronizing signal output
45
TEST9
Test input
I
Positive
Test input. Must be connected to ground during normal operation.
(A pull-down resistor is built in.)
46
YS
Superimpose output
O
Negative
Superimpose control output
47
CSYNC
Composite synchronization output
O
Negative
Composite synchronizing signal output
48
4FSC2
Clock input
I
Positive
External clock input for the superimpose function
(A feedback resistor is built in.)
49
TEST10
Test output
O
Positive
Test output
50
TEST11
Test output
O
Positive
Test output
Continued on next page.
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