tc7211am ETC-unknow, tc7211am Datasheet - Page 5

• Manufacturer Part Number: tc7211am
• Description: Compatible 4-digit Cmos Decoder/driver
• Manufacturer: ETC-unknow

BUS COMPATIBLE, 4-DIGIT
CMOS DECODER/DRIVER
INPUT DEFINITIONS
In this table, V
signals should swing over the full supply.
Input
OUTPUT DEFINITIONS
Output pins are defined by the alphabetical segment assignment and numerical digital assignment.
Output
DIGIT ASSIGNMENT
B0
B1
B2
B3
OSC
DS1
DS2
CS1
CS2
C1
D1
G1
C2
D2
G2
A1
B1
E1
F1
A2
B2
E2
F2
TELCOM SEMICONDUCTOR, INC.
Pin No.
Pin No.
+
37
38
39
40
10
12
11
2
4
6
7
8
9
3
and GND are considered to be normal operating input logic levels. For lowest power consumption, input
27
28
29
30
36
31
32
33
34
G
G
A Segment Drive
B
C
D
E
F
A Segment Drive
B
C
D
E
F
E
F
D
G
Condition
V
GND = Logic “0”
V
GND = Logic “0”
V
GND = Logic “0”
V
GND = Logic “0”
Floating or with
external capacitor GND
V
GND = Logical Zero
V
GND = Active
Function
A
+
+
+
+
+
+
= Logic “1”
= Logic “1”
= Logic “1”
= Logic “1”
= Logical One
= Inactive
C
B
Digit 1
Digit 2
(LSD)
Function
Ones (Least Significant)
Twos
Fours
Eights (Most Significant)
Oscillator input. Disables BP output devices, allowing segments to be
synchronized to an external signal input at the BP terminal (pin 5)
DS2, DS1 = 00 Selects D4
DS2, DS1 = 01 Selects D3
DS2, DS1 = 10 Selects D2
DS2, DS1 = 11 Selects D1
When both CS1 and CS2 are LOW, the data and digit select input
latches are open or enabled.
On the rising of CS1 or CS2, data is latched, decoded and stored in
the output drive latches.
D4
Output
G3
G4
A3
B3
C3
D3
E3
F3
A4
B4
C4
D4
E4
F4
D3
Pin No.
13
14
15
16
17
19
18
20
21
22
23
24
26
25
D2
Digit Select Inputs
A Segment Drive
B
C
D
E
G
A Segment Drive
B
C
D
E
G
F
F
Data Input Bits
D1
Function
TC7211AM
Digit 3
Digit 4
(MSD)
6-11
1
2
3
4
5
6
7
8