TC7211AM Ver la hoja de datos (PDF) - TelCom Semiconductor Inc => Microchip
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TC7211AM Datasheet PDF : 7 Pages
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BUS COMPATIBLE, 4-DIGIT
CMOS DECODER/DRIVER
1
TC7211AM
INPUT DEFINITIONS
In this table, V+ and GND are considered to be normal operating input logic levels. For lowest power consumption, input
signals should swing over the full supply.
2
Input
B0
B1
B2
B3
OSC
DS1
DS2
CS1
CS2
Pin No.
27
28
29
30
36
31
32
33
34
Condition
V+ = Logic “1”
GND = Logic “0”
V+ = Logic “1”
GND = Logic “0”
V+ = Logic “1”
GND = Logic “0”
V+ = Logic “1”
GND = Logic “0”
Floating or with
external capacitor GND
V+ = Logical One
GND = Logical Zero
V+ = Inactive
GND = Active
Function
Ones (Least Significant)
Twos
Fours
Data Input Bits
3
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
Digit Select Inputs
4
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.
OUTPUT DEFINITIONS
Output pins are defined by the alphabetical segment assignment and numerical digital assignment.
5
Output Pin No.
Function
Output Pin No.
Function
A1
37
A Segment Drive Digit 1 (LSD)
A3
B1
38
B
B3
C1
39
C
C3
D1
40
D
D3
E1
2
E
E3
F1
4
F
F3
G1
3
G
G3
A2
6
A Segment Drive Digit 2
A4
B2
7
B
B4
C2
8
C
C4
D2
9
D
D4
E2
10
E
E4
F2
12
F
F4
G2
11
G
G4
DIGIT ASSIGNMENT
13
A Segment Drive Digit 3
14
B
15
C
16
D
17
E
19
F
18
G
6
20
A Segment Drive Digit 4 (MSD)
21
B
22
C
23
D
24
E
26
F
25
G
7
D4
D3
D2
D1
A
FGB
E
C
8
D
TELCOM SEMICONDUCTOR, INC.
6-11
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