1/11 Duty Controller/Driver Standby Master/Slave Features Serial
|
|
|
Top Searches for this datasheet
AD7312
1/11 Duty Controller/Driver Standby Master/Slave Features
Serial interface (CLK, STB, DIN, DOUT) scanning matrices) Programming display modes (11-digit 11-segment 6-digit 16-segment) Programming dimming step High-voltage output (VDD-35V max). channels ports. 2-pin General-purpose input port Built-in oscillator external resistor necessary driver outputs (provides PMOS open-drain pull-low resistor output) Remote signal input port Remote signal output port STANDBY master output ports (controlled remote STANDBY-KEY, STANDBY-KEY STANDBY SCAN-KEY) WAKE master output ports (controlled remote WAKE_UP-KEY, WAKE_UP SCAN-KEY, remote STANDBY-KEY, STANDBY-KEY STANDBY SCAN-KEY) 6121/6122 infrared protocol support
General Description
AD7312 (Vacuum Fluorescent Display) controller/driver with STANDBY controller. driven 1/11 duty factor (include scan). consists segment output lines, segment/key scan output lines, grid output lines, segment/grid output drive lines, output ports, display memory, control circuit, scan circuit. addition, includes input ports, RMIN SKEY, RMIN receives signal form STANDBY-KEY remote sensor, SKEY controlled external switch. Both them STANBY SCAN-KEY control output level (High) port realize STANDBY function. leave standby mode, remote WAKE_UP-KEY, WAKE_UP SCAN-KEY, remote STANDBY-KEY, STANDBY-KEY STANDBY SCAN-KEY control output level (Low) port realize Wake function. Serial data input AD7312 through four-line serial interface.
This datasheet contains product information. Anachip Corp. reserves rights modify product specification without notice. liability assumed result this product. rights under patent accompany sale product.
Rev. 2003 1/12
AD7312
1/11 Duty Controller/Driver Standby Master/Slave Assignments
Seg13 Grid10 Seg12 Grid11 Seg16 Grid7 Seg15 Grid8 Seg14 Grid9
Seg11
Seg10
Grid5
Grid6
Grid Grid Grid Grid RMBUF
Seg9
Key4 Key3
RMIN
DOUT
Key1
SKEY
power pins.
Anachip Corp. www.anachip.com.tw 2/12
Key2
Rev. 2003
AD7312
1/11 Duty Controller/Driver Standby Master/Slave Descriptions
Symbol
DOUT
Name
Data input Data output
Description
Input serial data rising edge shift clock, starting from order bit. Output serial data falling edge shift clock, starting from order bit. This N-ch open-drain output pin. Initializes serial interface rising falling edge AD7312. then waits reception command. Data input after falling processed command. While command data processed, current processing stopped, serial interface initialized. While high, ignored. Reads serial data rising edge, outputs data falling edge. Connect resistor between this oscillation frequency. Segment output pins Multi-function pins, Segment output pins (Dual function scan source) Grid output pins These pins selectable segment grid driving. CMOS output CMOS output CMOS output Data input these pins latched display cycle. Logic power supply Connect this system GND. Driver power supply These pins constitute 2-bit general-purpose input port. Input Input
Strobe
Seg7 Seg11 Seg1/KS1 Seg6/KS6 Grid1 Grid6 Seg12/Grid11 Seg16/Grid7 LED1 LED4 RMBUF KEY1 KEY4 RMIN SKEY
Clock input Oscillator High-voltage output (Segment) High-voltage output High-voltage output (Grid) High-voltage output (Segment/grid) output Remote Control Buffer Power Saving Output data input Logic power Logic ground Pull-down level Switch input Remote Control Input Standby Input
Anachip Corp. www.anachip.com.tw 3/12
Rev. 2003
AD7312
1/11 Duty Controller/Driver Standby Master/Slave Ordering Information
AD7312
Package QFP-44L LQFP-44L
Lead Blank: Normal Lead Free
Packing Blank Tray
Block Diagram
DOUT
Segment/ scan Segment driver Segment/grid driver Grid driver
Command decoder Serial Display memory Words Timing generator scan data memory 2-bit latch
Dimming circuit
Seg1/KS1 Seg6/KS6 Seg7 Seg11 Seg12/Grid11
16-bit output latch
Data selector
KEY1 KEY4 2-bit latch
11-bit shift register
Seg16/Grid7
Grid1
Remote Control decoder
REBUF
LED1,4 (+5V) (0V) (-30V)
Grid6
Anachip Corp. www.anachip.com.tw 4/12
Rev. 2003
AD7312
1/11 Duty Controller/Driver Standby Master/Slave Absolute Maximum Ratings (TA=25oC,VSS=0V
Parameter Logic Supply Voltage Driver Supply Voltage Logic Input Voltage Driver Output Voltage Driver Output Current Driver Output Current Operating Ambient Temperature Storage Temperature Symbol TOPT TSTG Rating -0.5 +7.0 +0.5 -0.5 +0.5 VEE-0.5 +0.5 (grid) (segment) +125 Unit
Operating Conditions (TA=0 oC,VSS=0V)
Parameter Logic Supply Voltage High-Level Input Voltage Low-Level Input Voltage Driver Supply Voltage Symbol Conditions Min. Typ. Max. VDD-35 Unit
Characteristics (TA=0 VDD=4.5 5.5V, VSS=0V, VEE=VDD-35V)
Parameter High-Level Output Voltage Low-Level Output Voltage Low-Level Output Voltage High-Level Output Current High-Level Output Current Driver Leakage Current Output Pull-Down Resistor High-Level Input Voltage Low-Level Input Voltage Symbol VOH1 VOL1 VOL2 IOH21 IOH22 IOLEAK Conditions LED1/LED4, IOH1=-1mA LED1/LED4, IOL1=12mA DOUT, IOL2=2mA VO=VDD-2V, Seg1 Seg11 VO=VDD-2V, Grid Grid6 Seg12/Grid11 Seg16/Grid7 VO=VDD-35V, driver Driver output Min. 0.9VDD 0.7VDD 0.3VDD Typ. Max. Unit
Characteristics (Ta=0 oC,VDD=4.5 VEE=-30V)
Parameter Oscillation Frequency Maximum Clock Frequency Clock Pulse Width Strobe Pulse Width Data Setup Time Data Hold Time Clock-Strobe Time Wait Time Propagation delay time Rise time Fall time
Note Refer page
Anachip Corp. www.anachip.com.tw 5/12
Symbol fOSC fmax. PWCLK PWSTB tSETUP tHOLD tCLK-STB tWAIT tPHZ tPZL tTZH tTHZ
Conditions R=51 Duty=50%
Min.
Typ.
Max.
CLKSTB CLKCLK(Note) CLKDOUT CL=15pF,RL=10 CL=300pF Segn,Gridn
Unit
Rev. 2003
AD7312
1/11 Duty Controller/Driver Standby Master/Slave Timing Diagram
Serial Communication Format Reception (command/write data)
data continues
Transmission (read data)
DOUT data read command set. tWAIT (Note)
Data read.
Because DOUT N-ch, open-drain output pin, sure connect external pull-up resistor this
Note When data read, wait time tWAIT necessary since rising eighth clock that command, until falling first clock that read data.
Anachip Corp. www.anachip.com.tw 6/12
Rev. 2003
AD7312
1/11 Duty Controller/Driver Standby Master/Slave
Scanning Display Timing cycle scanning consists frame, data matrix stored RAM.
TDISP 500s Output DIG1 DIG2 DIG3 DIGn scan data DIG1
Grid1
Grid2
1/16 TDISP
Grid3
Gridn
frame (n+1)
Switching characteristic waveforms
fosc
PWSTB PWCLK PWCLK tCLK-STB
tSETUP
tHOLD
tPZL DOUT tTHZ Sn/Gn
tPLZ
tTZH
Anachip Corp. www.anachip.com.tw 7/12
Rev. 2003
AD7312
1/11 Duty Controller/Driver Standby Master/Slave
Applications Updating display memory incrementing address
Command
Command
Command
Data
Data
Command
Command sets display mode Command sets data(write data display memory) Command sets address Data transfers display data (22bytes max.) Command controls display
Updating specific display memory write registers
Command
Command
Data
Command
Data
Command sets data Command sets address Data: display data
Anachip Corp. www.anachip.com.tw 8/12
Rev. 2003
AD7312
1/11 Duty Controller/Driver Standby Master/Slave
Reading specific registers
Command
Command
Data1
Command2
Address2
Data2
Commandn
Addressn
Anachip Corp. www.anachip.com.tw 9/12
Rev. 2003
AD7312
1/11 Duty Controller/Driver Standby Master/Slave Package Information
Package Type: QFP-44L Dimension millimeter (mm.)
13.2 10.0 2.7(MAX.)
10.0 13.2
0.15 TYP.
TYP.
TYP.
TYP.
0.88 TYP.
Anachip Corp. www.anachip.com.tw 10/12
Rev. 2003
AD7312
1/11 Duty Controller/Driver Standby Master/Slave
Package Type: LQFP-44L
View
INDENT
12o(4X)
R0.08 MIN. DETAIL DETAIL
0.25 GAGE PLANE
Symbol
Dimensions Millimeters Min. Nom. Max. 1.60 0.05 0.10 0.15 1.35 1.40 1.45 0.30 0.37 0.45 0.09 0.20 11.50 12.00 12.50 9.50 10.00 10.50 11.80 12.00 12.20 9.90 10.00 10.10 0.80 0.45 0.60 0.75 1.00 3.5° 0.00 0.08
Dimensions Inches Min. Nom. Max. 0.063 0.002 0.004 0.006 0.053 0.055 0.057 0.012 0.015 0.018 0.004 0.008 0.453 0.472 0.492 0.374 0.394 0.413 0.465 0.472 0.480 0.390 0.394 0.398 0.031 0.018 0.024 0.030 0.039 3.5° 0.000 0.003
Anachip Corp. www.anachip.com.tw 11/12
Rev. 2003
AD7312
1/11 Duty Controller/Driver Standby Master/Slave Marking Information
view
Part Number
AD7312
Logo Blank: Normal Lead Free Package code: internal week: 01~52 Year: "01" 2001 "02" 2002
QFP44/LQFP44
Anachip Corp. www.anachip.com.tw 12/12
Rev. 2003
Other recent searches
TOTR370M-IR - TOTR370M-IR TOTR370M-IR Datasheet
STS-3 - STS-3 STS-3 Datasheet
PA2423MB - PA2423MB PA2423MB Datasheet
MMA6331L - MMA6331L MMA6331L Datasheet
ISL6237 - ISL6237 ISL6237 Datasheet
CDAE-164-004 - CDAE-164-004 CDAE-164-004 Datasheet
BD3520 - BD3520 BD3520 Datasheet
BD3524 - BD3524 BD3524 Datasheet
2SC4746A - 2SC4746A 2SC4746A Datasheet
Privacy Policy | Disclaimer
© 2012 Datasheet Archive
