FEDL9090A-01
1Semiconductor
This version:
May
2001
ML9090A-01, -02
LCD Driver with Key Scanner and RAM
1/41
GENERAL DESCRIPTION
The ML9090A-01 and ML9090A-02 are LCD drivers that contain internal RAM and a key scan function. They are
best suited for car audio displays.
Since 1-bit data of the display data RAM corresponds to the light-on or light-off of 1-dot of the LCD panel (a bit
map system), a flexible display is possible.
A single chip can implement a graphic display system of a maximum of 80
18 dots (80
10 dots for the
ML9090A-01, 80
18 dots for the ML9090A-02).
Since containing voltage multipliers, the ML9090A-01 and ML9090A-02 require no power supply circuit to drive
the LCD.
Since the internal 5
5 scan circuit has eliminated the needs of key scanning by the CPU, the ports of the CPU can
be efficiently used.
FEATURES
Logic voltage: 2.7 to 5.5 V
LCD drive voltage: 6 to 16 V (positive voltage)
80 segment outputs, 10 common outputs for ML9090A-01 and 18 common outputs for ML9090A-02
Built-in bit-mapped RAM (ML9090A-01: 80
10 = 800 bits, ML9090A-02: 80
18 = 1440 bits)
4-pin serial interface with CPU:
CS, CP, DI/O, KREQ
Built-in LCD drive bias resistors
Built-in voltage doubler or tripler circuit
Built-in 5
5 key scanner
Port A output
: 1 pin, output current: 15 mA: (may be used for LED driving)
Port B output
: 8 pins
Output current (available for the ML9090A-01 only)
2 mA : 5 pins
15 mA : 3 pins
Temperature range: 40 to +85C
Package: 128-pin plastic QFP (QFP128-P-1420-0.50-K)
(Product name: ML9090A-01GA)
(Product name: ML9090A-02GA)
Comparison between the ML9090A-01 and the ML9090A-02
Item
ML9090A-01
ML9090A-02
Number of common outputs
10 Max.
18 Max.
Number of dots on the LCD screen
(selectable by program)
8
80
9
80
10
80
16
80
17
80
18
80
Number of port A outputs
1
1
Number of port B outputs
8
--
FEDL9090A-01
1Semiconductor
ML9090A-01, -02
4/41
PIN CONFIGURATION (TOP VIEW) 1/2
ML9090A-01
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SEG73
SEG72
SEG69
SEG68
SEG67
SEG66
SEG65
SEG64
SEG63
SEG62
SEG61
SEG60
SEG59
SEG58
SEG57
SEG56
SEG55
SEG54
SEG53
SEG52
SEG51
SEG50
SEG49
SEG48
SEG47
SEG46
SEG45
SEG44
SEG43
SEG42
SEG41
SEG40
SEG39
SEG38
SEG37
SEG36
V
DD
OSC2
OSC1
DT
V
2
V
3B
V
3A
V
IN
V
C1
V
C2
V
S1
V
S2
V
SS
TEST
RESET
KREQ
DI/O
CS
CP
C0
C1
C2
C3
C4
R0
R1
R2
R3
R4
SEG1
SEG2
SEG3
SEG4
SEG5
SEG8
SEG9
SEG71
SEG70
SEG6
SEG7
SEG
7
4
SEG
7
5
SEG
7
6
SEG
7
7
SEG
7
8
SEG
7
9
SEG
8
0
CO
M
1
CO
M
2
CO
M
3
CO
M
4
CO
M
5
CO
M
6
CO
M
7
CO
M
8
CO
M
9
CO
M
1
0
PB0
PB1
PB2
PB3
PB4
PB5
PB6
PB7
PA0
12
8
12
7
12
6
12
5
12
4
12
3
12
2
12
1
12
0
11
9
11
8
11
7
11
6
11
5
11
4
11
3
11
2
11
1
11
0
10
9
10
8
10
7
10
6
10
5
10
4
10
3
SEG
3
5
SEG
3
4
SEG
3
3
SEG
3
2
SEG
3
1
SEG
3
0
SEG
2
9
SEG
2
8
SEG
2
7
SEG
2
6
SEG
2
5
SEG
2
4
SEG
2
3
SEG
2
2
SEG
2
1
SEG
2
0
SEG
1
9
SEG
1
8
SEG
1
7
SEG
1
6
SEG
1
5
SEG
1
4
SEG
1
3
SEG
1
2
SEG
1
1
SEG
1
0
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128-pin plastic QFP
FEDL9090A-01
1Semiconductor
ML9090A-01, -02
5/41
PIN CONFIGURATION (TOP VIEW) 2/2
ML9090A-02
1
2
3
4
5
6
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9
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102
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84
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82
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SEG73
SEG72
SEG69
SEG68
SEG67
SEG66
SEG65
SEG64
SEG63
SEG62
SEG61
SEG60
SEG59
SEG58
SEG57
SEG56
SEG55
SEG54
SEG53
SEG52
SEG51
SEG50
SEG49
SEG48
SEG47
SEG46
SEG45
SEG44
SEG43
SEG42
SEG41
SEG40
SEG39
SEG38
SEG37
SEG36
V
DD
OSC2
OSC1
DT
V
2
V
3B
V
3A
V
IN
V
C1
V
C2
V
S1
V
S2
V
SS
TEST
RESET
KREQ
DI/O
CS
CP
C0
C1
C2
C3
C4
R0
R1
R2
R3
R4
SEG1
SEG2
SEG3
SEG4
SEG5
SEG8
SEG9
SEG71
SEG70
SEG6
SEG7
SEG
7
4
SEG
7
5
SEG
7
6
SEG
7
7
SEG
7
8
SEG
7
9
SEG
8
0
CO
M
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CO
M
2
CO
M
3
CO
M
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CO
M
5
CO
M
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CO
M
7
CO
M
8
CO
M
9
CO
M
1
0
CO
M
1
1
CO
M
1
2
CO
M
1
3
CO
M
1
4
CO
M
1
5
CO
M
1
6
CO
M
1
7
CO
M
1
8
PA0
12
8
12
7
12
6
12
5
12
4
12
3
12
2
12
1
12
0
11
9
11
8
11
7
11
6
11
5
11
4
11
3
11
2
11
1
11
0
10
9
10
8
10
7
10
6
10
5
10
4
10
3
SEG
3
5
SEG
3
4
SEG
3
3
SEG
3
2
SEG
3
1
SEG
3
0
SEG
2
9
SEG
2
8
SEG
2
7
SEG
2
6
SEG
2
5
SEG
2
4
SEG
2
3
SEG
2
2
SEG
2
1
SEG
2
0
SEG
1
9
SEG
1
8
SEG
1
7
SEG
1
6
SEG
1
5
SEG
1
4
SEG
1
3
SEG
1
2
SEG
1
1
SEG
1
0
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45
46
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51
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62
63
64
128-pin plastic QFP