M5451Q STMicroelectronics, M5451Q Datasheet - Page 2

• Manufacturer Part Number: M5451Q
• Description: IC LED DISPLAY DRIVER 44-PLCC
• Manufacturer: STMicroelectronics

Specifications of M5451Q

• Display Type: LED
• Configuration: Alphanumeric or Dot Matrix
• Interface: Serial
• Digits Or Characters: 4 or 5 Digits
• Current - Supply: 7mA
• Voltage - Supply: 4.75 V ~ 13.2 V
• Operating Temperature: -25°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 44-PLCC
• Number Of Digits: 5
• Number Of Segments: 35
• Low Level Output Current: 25 mA
• Operating Supply Voltage: 4.75 V to 13.2 V
• Maximum Supply Current: 7 mA
• Maximum Power Dissipation: 1 W
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 25 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

M5450, M5451
Figure 2. Pin Connection
Figure 3. Block Diagram
2/12
BRIGHTNESS CONTROL
OUTPUT BIT 17
OUTPUT BIT 16
OUTPUT BIT 15
OUTPUT BIT 14
OUTPUT BIT 13
OUTPUT BIT 12
OUTPUT BIT 11
OUTPUT BIT 10
OUTPUT BIT 9
OUTPUT BIT 8
OUTPUT BIT 7
OUTPUT BIT 6
OUTPUT BIT 5
OUTPUT BIT 4
OUTPUT BIT 3
OUTPUT BIT 2
OUTPUT BIT 1
V
V
SS
DD
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
DATA ENABLE (M5450)
OUTPUT35 (5451)
BRIGTHNESS
CONTROL
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
100kΩ
SERIAL
DATA
CLOCK
OUTPUT BIT 18
OUTPUT BIT 19
OUTPUT BIT 20
OUTPUT BIT 21
OUTPUT BIT 22
OUTPUT BIT 23
OUTPUT BIT 24
OUTPUT BIT 25
OUTPUT BIT 26
OUTPUT BIT 27
OUTPUT BIT 28
OUTPUT BIT 29
OUTPUT BIT 30
OUTPUT BIT 31
OUTPUT BIT 32
OUTPUT BIT 33
OUTPUT BIT 34
DATA ENABLE FOR M5450
OUTPUT BIT 35 FOR M5451
DATA IN
CLOCK IN
19
23
22
21
V
20
DD
OUTPUT
BIT 34
35-BIT SHIFT REGISTER
24
35 OUTPUT BUFFERS
OUTPUT BIT 13
OUTPUT BIT 12
OUTPUT BIT 11
OUTPUT BIT 10
OUTPUT BIT 9
OUTPUT BIT 8
OUTPUT BIT 7
OUTPUT BIT 6
OUTPUT BIT 5
OUTPUT BIT 4
35 LATCHES
1
N.C.
OUTPUT
7
8
9
10
11
12
13
14
15
16
17
BIT 1
18
RESET
LOAD
39
38
37
36
35
34
33
32
31
30
29
OUTPUT BIT 23
OUTPUT BIT 24
OUTPUT BIT 25
OUTPUT BIT 26
OUTPUT BIT 27
N.C.
OUTPUT BIT 28
OUTPUT BIT 29
OUTPUT BIT 30
OUTPUT BIT 31
OUTPUT BIT 32