ICM7212AIPL+ ,Four Digit Display Decoder/Driversapplications. The ICM7212 LED display driver reduces
system cost by eliminating external level tra ..
ICM7212AMIPL ,Four digit display decoder/driver. LED, output code19-959; Rev. 1; 11/89
General Descrip tion
The Maxim ICM7211 (LCD) and ICM7212 (LED) four
di ..
ICM7212AMIPL ,Four digit display decoder/driver. LED, output code19-959; Rev. 1; 11/89
General Descrip tion
The Maxim ICM7211 (LCD) and ICM7212 (LED) four
di ..
ICM7212AMIPL ,Four digit display decoder/driver. LED, output codeelectrical characteristics above are a reproduction ofa portion of intersi/‘s copyrighted ( 1981 ) ..
ICM7212AMIPL ,Four digit display decoder/driver. LED, output codeapplications. The ICM7212 LED display driver reduces
system cost by eliminating external level tra ..
ICM7212AMIPL ,Four digit display decoder/driver. LED, output codeApplications
The low power consumption of the ICM7211 LCD
driver makes it ideal for battery pow ..
IDT74FCT16245CTPF , FAST CMOS 16-BIT BIDIRECTIONAL TRANSCEIVERS
IDT74FCT16245ETPV , FAST CMOS 16-BIT BIDIRECTIONAL TRANSCEIVERS
IDT74FCT16245ETPV , FAST CMOS 16-BIT BIDIRECTIONAL TRANSCEIVERS
IDT74FCT16245TPA , FAST CMOS 16-BIT BIDIRECTIONAL TRANSCEIVERS
IDT74FCT16245TPV , FAST CMOS 16-BIT BIDIRECTIONAL TRANSCEIVERS
IDT74FCT16245TPV , FAST CMOS 16-BIT BIDIRECTIONAL TRANSCEIVERS
ICM7211AMIJL-ICM7212AIPL+-ICM7212AMIPL+-ICM7212AMIQH-D
Four Digit Display Decoder/Drivers
19-959; Rev. 2; 11/05
____- General Description
The Maxim ICM7211 (LCD) and ICM7212 (LED) four
digit, seven segment display drivers include input data
latches, BCD to segment decoders, and all level
translation and timing circuits needed to drive non-
multiplexed displays.
Both the ICM7211 and ICM7212 are available in two
data input configurations: a multiplexed BCD interface
version and a microprocessor interface version. The
multiplexed BCD interface version has four BCD data
inputs and four separate digit Strobes. The micro-
processor interface versions, designated by an "M"
suffix, have four BCD data inputs, two digit address
iines, and two chip selects or WRITE inputs.
The ICM7211 and lCM7212decodethe BCDdata via an
onboard character font ROM. There are two different
character fonts available, hexadecimal and Code B.
Applications
The low power consumption of the ICM7211 LCD
driver makes it ideal for battery powered and portable
applications. The ICM7212 LED display driver reduces
system cost by eliminating external level translators,
external segment drivers, and segment current limiting
resistors.
Digital Panel Displays
Intelligent Instruments
Remote Display Units
Microprocessor-to-Visual Communication
Typical Operating Circuit
3015” Cl Cil Cl LD', ', Cl ICI Cl Cl
LCD DISPLAY Cl Cl L..l Cl', ', C D Cl I. I /_ D
I 28 ' r28
"iv--- MAXIM 'sv-) MAXIM
grt: ICM7217 -12C., ICM7211(A)
4 4 I ' 1
BCOI‘EINARV
D6-----
DIGIT DS-----'---
SELECTS oa------------u
(Detailed Circuit Diagram-Figure 14)
AVH/J] '2C l] 2f'llA]
Four Digit Display
Decodermriivers
Fea tures
. Improved 2nd Source! (See 3rd page for
"Maxim Advantage"'").
. Directly drives Four Digit, 7 Segment Displays
ICM7211 - Non-multiplexed Liquid
Crystal Display (LCD)
ICM7212 - Non-multlplexed Common
Anode LED
Multiplexed BCD Interface and up Interface
Versions
No external components needed
. Low Power CMOS - 25pW typ. (display
blanked)
Ordering Informa tion
I "r"'--.);.-." - - ---_ -_--- e -
i OUTPUT INPUT
DEVICE TYPE _ L, CODE I CONFIGURATION
-jcrliiiiijrij, (LCD) i fisrilircir1niiLi MultIplexedd- Bit I
l_C_N17_11/S(1-12r_)__l, _ptoAe/ B -----f- __H I
ICM7211M (LCD) :iHefadeCImalu j #P Interface 3
ICM7211AM (LCD) CodeB _ I
ICM721_2 (LED) 3 Hexadecnmal r' ,
l M It I d4-Brt
','.jdiifij, 7212A iijrjiijh, I C_ode_B jc' U [''f'fl - I,
IQMLTIZM (LED) I HexadeCImaI _I Plntertace i
IICM7212AM (LEDW CodeB _ ll" ___________ I
(Ordering information continued).
Pin Configurations
Top V ew 40 Lead DIP
V’E o " DI
:1E 39 C1
Gt E E Bl
"I: " A1
an cc E oscuuron
A2 7 " GND
B2 E E In
c2 I: 21m 23:2“
D2 CE MAXM,‘ 32 D2 INPUTS
E2 10 ICM7211 31 Dt
62[£ ICM7211A IR',',', DAT,
F2 12 29 B2 ATA
AO " " I31 '"PUTS
B3 " " BO
C3 Is CE"
D3 16 25 G4
E3 " " El
3 " 23 m
F3 19 22 C4
Al [E Z] Ba
(Pin Configurations continued)
llll/JXI/VI
Maxim Integrated Products 1
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim's website at .
http://www.loq.com/
ZIZl/M-ZILWOI
Four Digit Display
Decoder/Drivers
ABSOLUTE MAXIMUM RATINGS
Power Dissipation (Note 1) ............... 0.5 W@ 70°C Stressesabove those listed under Absolute Maximum Ratings may
Supply Voltage .................................. 6.5V cause permanent damage to the device. .These are stress ratings
Input Voltage (Any only and functional operation of the device at these or any other
Terminal) (Note 2) V‘ +0 3V GROUND -0 3V conditions above those indicated in the operational sections of the
. ............ . ' - o "o specificationsis notimplied. Exposuretoabsolute maximumrating
'ef,':'),'"),)),';'),','),',,','),")',,'),;;,'".' ...-.... 2,eifilttl',f, conditions for extended periods may affect device reliability.
Lead Temperature (Soldering 10 sec.) ........... 300°C
ELECTRICAL CHARACTERISTICS
(V' = 5V: TA = 25°C. Test circuit unless noted)
ICM7! 17/ 7212
|CM7211 CHARACTERISTICS (LCD)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNIT
Operating Supply Voltage Range Vsupp . - - 3 A 5 6 V -
Bharatlng Current Iop Test curcmt. Display blank - - - - 10 50 “A
Oscnllator Input Current Itasty Pin 36 S _ t10
Segment Rise/Fall Time tms Cc : 200pF - 0.5
Backplane Rise/Fall Time taps CL -- 5000pF _-__ - 1.5 PS
Oscillator Frequency lost: Pin 36 Floating 16 kHz
Backplane Frequency lap Pin 36 Floating - 125 Hz
ICM7212 CHARACTERISTICS (COMMON ANODE LED)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNIT 1
Operating Supply Voltage Range Vsupp 4 5 6 V
Operating Current Iop Pin 5 (Brightness). IO 50 "
Display Ott Pin 27-34 - GROUND
Operating Current Iop Pin 5 at v'. Display all 8's f 200 mA a
Segment Leakage Current ISL“ Segment Off i001 tl “A
Segment On Current I556 Segment On, Vo ' 93V 5 8 mA
INPUT CHARACTERISTICS j', -"
PARAMETER SYMBOL L; CONDITIONS MIN TYP MAX UNIT,
Logical "1" input voltage vm . ' 1 ., - 3 v
Logical "0" input voltage " C,'. A. me " 1
Input leakage current hut; Pins 27434 . - T :01 tl E “A
Input capacitance - Cw ' T T Pitts 27-34 5 Fr 1
BP/Brightness input leakage " fiit3vx Measured at Pin 5 with Pin 36 at GND t.01 tl “A J
BP/Brightness input capacitance A thmr, 1‘ All Devices A 200 A pF '
AC CHARACTERISTICS - N!n,,.Trlt.taEp, INPUT CONFIGURATION
Digit Select Active Pulse Widttt2'e, tspt Refer to Timing Diagrams 1 p;
Data Setup Time . "r, " _ " tog 500 ns
Data Hold Time ; L." ’31:" mq" tDH 200
Inter-Digit Select Ilmé 'ti nos 2 - its
AC CHARACTERISTICS - MICROPROCESSOR INTERFACE
Chip Seleg'tAbtrve Pulse Width tCSA other chip select either held active. 200
m or both driven together ns
Data Setup Time 105 100
Data Hold Time tDH 10 0
lnter-Chip Select Time llcs 2 us
Note 1: This limit refers to' that of the package and will not be realized during normal operation.
Note 2: Due to the SCR structure inherent in the CMOS process. connecting any terminal to voltages greater than v' or less than GROUND may
cause destructive device It.ttctrup, For this reason, it is recommended that no inputs from external sources not operating on the
same ower supply be applied to the device before its supply is established. and that in multiple supply systems, the supp y to the
ICM7 11/ICM7212 be turned on first.
The electrical trtyrra.ctertifs above are aeprodyction of a portion of Mtersil's copyrighted{1981) data book. This information does not constitute
any representation by, Maxim that Mtersirs products will perform in accordance with these specifications, The "Electrical Characteristics Table"
along with the descriptive excerpts from the original manufacturer's data sheet have been included in this data sheet solely for comparative
purposes.
2 lM/JXI/l/l
