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PDF TC7211AM Data sheet ( Hoja de datos )
| Número de pieza | TC7211AM | |
| Descripción | BUS COMPATIBLE 4-DIGIT CMOS DECODER/DRIVER | |
| Fabricantes | TelCom Semiconductor | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de TC7211AM (archivo pdf) en la parte inferior de esta página. Total 7 Páginas | ||
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1
TC7211AM
BUS COMPATIBLE 4-DIGIT CMOS DECODER/DRIVER
2
FEATURES
GENERAL DESCRIPTION
s 4-Digit Non-Multiplexed 7-Segment LCD Outputs
With Backplane Driver
s Input and Digit Select Data Latches
s RC Oscillator On-Chip Generates Backplane
Drive Signal
s Eliminates DC Bias Which Degrades LCD Life
s Backplane Input/Output Pin Permits
Synchronization of Cascaded Slave Device to
a Master Backplane Signal
s Binary and BCD Inputs Decoded to Code B
(0 to 9, —, E, H, L, P, Blank)
s Pin Compatible and Functionally Equivalent to
ICM7211AM
PIN CONFIGURATIONS
The TC7211AM (LCD Decoder/driver) is a CMOS di-
rect drive, 4-digit, 7-segment display decoder and driver.
The TC7211AM drives conventional LCDs. An RC os-
cillator, divider chain, backplane driver, and 28-segment
outputs are provided on a single CMOS chip. The segment
drivers supply square waves of the same frequency as the
backplane, but in-phase for an OFF segment and out-of-
phase for an ON segment. The net DC voltage applied
between driver segment and backplane is near zero maxi-
mizing display lifetime.
The four bit binary input is decoded into the seven
segment alphanumeric code known as "Code B". The "Code
B" output format results in a 0 to 9,—, E, H, L, P or blank
display. True BCD or binary inputs will be correctly de-
coded to the seven segment display format.
3
4
ORDERING INFORMATION
V+ 1
40 D1
E1 2
39 C1
G1 3
38 B1
F1 4
www.DataSheet4U.com
BP 5
37 A1
36 OSCILLATOR
A2 6
35 GND
B2 7
34 CHIP SELECT 2 (CS2)
C2 8
33 CHIP SELECT 1 (CS1)
D2 9
32 DIGIT SELECT 2 (DS2
E2 10
31 DIGIT SELECT 1 (DS1
G2 11 TC7211AM (LCD) 30 B3
F2 12
A3 13
29 B2
28 B1
DATA
INPUTS
B3 14
27 B0
C3 15
26 F4
D3 16
25 G4
E3 17
24 E4
G3 18
23 D4
F3 19
22 C4
A4 20
21 B4
TELCOM SEMICONDUCTOR, INC.
Part No.
Driver
Input
Type Package Code
TC7211AMIPL LCD
40-Pin Code B
Plastic DIP
Output
Config.
Data and
Digit Select
Latches
5
6
7
TC7211AM-4 11/14/96
6-7
8
1 page  
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.
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
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
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.
2
3
4
OUTPUT DEFINITIONS
Output pins are defined by the alphabetical segment assignment and numerical digital assignment.
Output Pin No.
www.DaAt1aSheet4U.com37
B1 38
C1 39
D1 40
E1 2
F1 4
G1 3
A2 6
B2 7
C2 8
D2 9
E2 10
F2 12
G2 11
Function
A Segment Drive
B
C
D
E
F
G
A Segment Drive
B
C
D
E
F
G
Digit 1
Digit 2
(LSD)
Output
A3
B3
C3
D3
E3
F3
G3
A4
B4
C4
D4
E4
F4
G4
Pin No.
13
14
15
16
17
19
18
20
21
22
23
24
26
25
Function
A Segment Drive
B
C
D
E
F
G
A Segment Drive
B
C
D
E
F
G
Digit 3
Digit 4 (MSD)
DIGIT ASSIGNMENT
5
6
7
D4 D3 D2 D1
A
FGB
E
D
C
8
TELCOM SEMICONDUCTOR, INC.
6-11
5 Page | ||
| Páginas | Total 7 Páginas | |
| PDF Descargar | [ Datasheet TC7211AM.PDF ] | |
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