HT16515 1/4 to 1/12 Duty VFD Controller Features · Logic voltage: 3.0V~5.5V · 4 LED output ports · High-voltage output: VDD-35V max. · No external resistors necessary for driver output (provides PMOS open-drain and pull-low resistor output) · Multiple display (16-segment & 12-digit to 24-segment & 4-digit) · Serial interface with MCU (CLK, CS, DI, DO) · 16´2 matrix key scanning · 44-pin QFP/LQFP packages · 8 steps dimmer circuit Applications · Consumer products panel function control · Other similar applications for panel function control · Industrial measuring instrument panel function control General Description HT16515 is a VFD (Vacuum Fluorescent Display) controller/driver that is driven on a 1/4 to 1/12 duty factor. It consists of 16 segment output lines, 4 grid output lines, 8 segment/grid output drive lines, 4 LED output ports, a control circuit, a display memory, and a key scan circuit. Serial data inputs to the HT16515 through a three-line serial interface. This VFD controller/driver is an ideal MCU peripheral device. Block Diagram C o m m a n d D e c o d e r D I D O C L K S e r ia l I/F D is p la y R A M 2 4 - B it ´ 1 2 W o r d s 2 4 - B it O u tp u t L a tc h 2 4 1 6 C S O S C S e g 1 /K S 1 S e g 1 6 /K S 1 6 8 O S C T im in g G e n e r a to r K e y S c a n K e y D a ta M e m o ry (2 ´ 1 6 ) D a ta S e le c to r 1 2 - B it S h ift R e g is te r K e y 0 ~ K e y 1 4 - B it L a tc h 8 M u ltip le x e d D r iv e r S e g 1 7 /G r id 1 2 S e g 2 4 /G r id 5 8 4 1 2 G r id D r iv e r G r id 1 G r id 4 D im m in g C ir c u it L E D 0 ~ L E D 3 Rev. 1.70 S e g m e n t D r iv e r V D D 1 V S S V E E May 7, 2010 HT16515 Pin Assignment 1 1 /K 1 2 /K 1 3 /K 1 4 /K 1 5 /K 1 6 /K E 1 2 3 4 5 6 S e g 1 0 /K S 1 0 S e g S e g S e g S e g S e g S e g S 1 S 1 S 1 S 1 S 1 S 1 V E S e g 1 7 /G r id 1 2 S e g 1 8 /G r id 1 1 S e g 1 9 /G r id 1 0 3 3 3 2 3 1 3 0 2 9 2 8 2 7 2 6 2 5 2 4 2 3 9 3 4 2 2 S e g 9 /K S 9 8 3 5 2 1 7 3 6 2 0 6 3 7 S e g 2 4 /G r id 5 G r id 4 G r id 3 3 8 S e g 8 /K S 8 S e g 7 /K S 7 S e g 6 /K S 6 S e g S e g S e g S e g 2 0 /G 2 1 /G 2 2 /G 2 3 /G r id r id r id r id G r id G r id V D V S 1 9 3 9 4 0 2 1 D 1 6 1 5 4 2 1 4 4 3 1 3 1 3 2 4 5 6 7 8 S e g S e g S e g S e g S e g V D D V S S 1 7 4 1 4 4 S 1 8 H T 1 6 5 1 5 4 4 Q F P -A /L Q F P -A 9 1 0 1 1 1 2 5 /K 4 /K 3 /K 2 /K 1 /K S 5 S 4 S 3 S 2 S 1 K E Y 1 3 2 1 0 K E Y 0 C S C L K D I D O O S C L E D L E D L E D L E D Pad Assignment S e g 2 0 /G r id 9 S e g 2 1 /G r id 8 S e g 2 2 /G r id 7 S e g 2 3 /G r id 6 S e g 2 4 /G r id 5 G r id 4 G r id 3 G r id 2 G r id 1 V D D V S S 4 4 L E D 0 1 L E D 1 2 4 3 3 8 3 5 3 6 3 7 S e g 1 9 /G r id 1 0 3 2 S e g 1 8 /G r id 1 1 3 1 S e g 1 7 /G r id 1 2 3 0 V E E 3 4 3 L E D 2 L E D 3 3 9 4 0 4 1 4 2 3 3 4 (0 ,0 ) O S C 5 2 9 S e g 1 6 /K S 1 6 D O 6 2 8 S e g 1 5 /K S 1 5 7 2 7 S e g 1 4 /K S 1 4 2 6 S e g 1 3 /K S 1 3 2 5 S e g 1 2 /K S 1 2 2 4 S e g 1 1 /K S 1 1 2 3 S e g 1 0 /K S 1 0 D I C L K 8 C S 9 K E Y 0 1 0 K E Y 1 1 1 1 3 1 4 1 5 1 6 1 7 1 8 1 9 2 0 2 1 2 2 1 2 S e g 9 /K S 9 S e g 8 /K S 8 S e g 7 /K S 7 S e g 6 /K S 6 S e g 5 /K S 5 S e g 4 /K S 4 S e g 3 /K S 3 S e g 2 /K S 2 S e g 1 /K S 1 V D D V S S Chip Size: 2335mm ´ 1855mm * The IC substrate should be connected to VSS in the PCB layout artwork. Rev. 1.70 2 May 7, 2010 HT16515 Pad Coordinates Unit: mm Pad No. X Y Pad No. X Y 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 -962.50 -962.50 -962.50 -962.50 -962.50 -962.50 -962.50 -962.50 -962.50 -962.50 -962.50 -689.60 -460.45 -344.25 -242.85 -141.45 -40.05 61.35 162.75 264.15 365.55 466.95 600.00 495.00 380.20 275.20 -107.20 -235.60 -366.00 -471.00 -576.00 -681.00 -786.00 -772.45 -595.30 -595.30 -595.30 -595.30 -595.30 -595.30 -595.30 -595.30 -595.30 -595.30 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 834.10 834.10 834.10 834.10 834.10 834.10 834.10 987.30 987.30 987.30 987.30 610.30 508.90 407.50 306.10 204.70 103.30 1.90 -99.50 -200.90 -317.10 -624.50 -754.00 -652.60 -551.20 -449.80 -348.40 -247.00 -145.60 0.50 130.50 382.05 734.05 594.40 594.40 594.40 594.40 594.40 594.40 594.40 594.40 594.40 594.40 756.80 Pin Description Pin No. Pin Name I/O Description 1~4 LED3~LED0 O LED driver output ports. This is a CMOS output pin and maximum driving current up to +20mA. 5 OSC I Connected to an external resistor or an RC oscillator circuit. 6 DO O Data output pin, output serial data at falling edge of shift clock, starting from the lower bit. This is N-ch open-drain output pin. 7 DI I Data input pin, input serial data at rising edge of shift clock, starting from the lower bit. 8 CLK I Clock input pin. Reads serial data at the rising edge, and outputs data at the falling edge. 9 CS I Initializes serial interface at the rising or falling edge of the HT16515. Then it waits to receive a command. Data input after CS has fallen is processed, current processing is stopped, and the serial interface is initialized. While CS is high, CLK is ignored. 10, 11 Key0, Key1 I Key-in data input to these pins are latched at the end of the display cycle. 12, 44 VSS ¾ Negative power supply, ground 13, 43 VDD ¾ Positive power supply 14~29 Seg1/KS1~Seg16/KS16 O High voltage output, segment output pins, dual function as key source. This is PMOS open-drain and pull-low resistor output. 30 VEE ¾ VFD power supply 31~38 Seg17/Grid12~ Seg24/Grid5 O High voltage output, these pins are selectable for segment or grid output. This is PMOS open-drain and pull-low resistor output. 39~42 Grid4~Grid1 O High voltage output, grids output pin. This is PMOS open-drain and pull-low resistor output. Rev. 1.70 3 May 7, 2010 HT16515 Approximate Internal Connections N M O S O U T P M O S O U T V D D V E E C M O S O U T V D D Absolute Maximum Ratings Supply Voltage ...........................VSS-0.3V to VSS+6.0V Operating Temperature...........................-25°C to 75°C Input Voltage..............................VSS-0.3V to VDD+0.3V Storage Temperature ............................-50°C to 125°C Note: These are stress ratings only. Stresses exceeding the range specified under ²Absolute Maximum Ratings² may cause substantial damage to the device. Functional operation of this device at other conditions beyond those listed in the specification is not implied and prolonged exposure to extreme conditions may affect device reliability. D.C. Characteristics Symbol Parameter VDD Logic Supply Voltage VEE VFD Supply Voltage fOSC Oscillation Frequency RPL Output Pull-low Resistor IDD Operating Current IOL Driver Leakage Current IOL1 LED Sink Current IOH1 LED Source Current IOH21 Segment 1~16 Source Current IOH22 Segment 17~24, Grid 1~4 Source Current IOL3 DO Sink Current VIH ²H² Input Voltage Rev. 1.70 Ta=25°C, VEE=VDD-35V Test Conditions Min. Typ. Max. Unit 3 3.3 3.6 V 4.5 5 5.5 V 0 ¾ VDD-35 V ROSC=82kW 350 500 650 kHz Driver output 40 65 120 kW 3.3V No load, VFD display off, 5V data output =00H ¾ ¾ 3 ¾ ¾ 5 3.3V -5 ¾ 5 -10 ¾ 10 10 ¾ ¾ 20 ¾ ¾ ¾ ¾ -1.5 ¾ ¾ -3 ¾ ¾ -1.5 ¾ ¾ -3 ¾ ¾ -7.5 ¾ ¾ -15 2 ¾ ¾ 4 ¾ ¾ 0.7VDD ¾ VDD VDD Conditions 3.3V ¾ 5V ¾ 3.3V 5V 3.3V 5V 5V 3.3V 5V 3.3V 5V 3.3V 5V 3.3V 5V 3.3V 5V ¾ VO=VDD-35V, VFD driver off VOL=1V, LED0~LED3 VOH=0.9VDD, LED0~LED3 VOH=VDD-2V VOH=VDD-2V VOL=0.4V ¾ ¾ 4 mA mA mA mA mA mA mA V May 7, 2010 HT16515 Symbol VIL Parameter ²L² Input Voltage Test Conditions VDD Conditions ¾ ¾ 3.3V VH Hysteresis Voltage VOH1 High-level Output Voltage 5V 3.3V LED0~LED3, IOH1=-1.5mA 5V VOL1 Low-level Output Voltage VOL2 Low-level Output Voltage CLK, DIN, CS LED0~LED3, IOL1=20mA 3.3V DO, IOL2=2mA 5V Typ. Max. Unit 0 ¾ 0.3VDD V ¾ 0.17 ¾ ¾ 0.35 ¾ 0.9VDD ¾ VDD V 0 ¾ 1 V 0 ¾ 0.4 V LED0~LED3, IOH1=-3mA 3.3V LED0~LED3, IOL1=10mA 5V Min. DO, IOL2=4mA A.C. Characteristics Symbol Parameter tPHL Logic Supply Voltage tPLH Ta=25°C Test Conditions Min. Typ. Max. 3.3V ¾ ¾ 600 5V CLK®DO 3.3V CL=15pF, RL=10kW ¾ ¾ 300 ¾ ¾ 600 ¾ ¾ 300 ¾ ¾ 4 VDD Conditions 5V 3.3V tr1 CL=300pF, S1~S16 ¾ ¾ 2 ¾ ¾ 1 ¾ ¾ 0.5 3.3V ¾ ¾ 240 ¾ ¾ 120 ¾ ¾ 0.5 ¾ ¾ 1.0 ¾ ¾ 15 800 ¾ ¾ 400 ¾ ¾ 2 ¾ ¾ 1 ¾ ¾ 200 ¾ ¾ 100 ¾ ¾ 200 ¾ ¾ 100 ¾ ¾ 3.3V CLK rising edge to CS rising 5V edge 2 ¾ ¾ 1 ¾ ¾ 3.3V CLK rising edge to CLK falling 5V edge 2 ¾ ¾ 1 ¾ ¾ 5V tf Fall Time fCLK Clock Frequency Ci Input Capacitance tCW Clock Pulse Width tSW Strobe Pulse Width tSU Data Setup Time th Data Hold Time tCS Clock-Strobe Time tW Wait Time Rev. 1.70 5V CL=300pF, Sn, Gn 3.3V Duty=50% 5V 3.3V ¾ 5V 3.3V ¾ 5V 3.3V ¾ 5V 3.3V ¾ 5V 3.3V ¾ 5V 5 Unit ns 3.3V C =300pF, G1~G4 L 5V S17/G12~S24/G5 Rise Time tr2 V ms ms MHz pF ns us ns ns ms ms May 7, 2010 HT16515 Functional Description The data of each key is stored as illustrated below, and is read with the read command, starting from the least significant bit. Display RAM and Display Mode The static display RAM stores the data transmitted from an external device to the HT16515 through a serial interface. The contents of the RAM are directly mapped to the contents of the VFD driver. Data in the RAM can be accessed through the data setting, address setting and display control commands. It is assigned as addresses in 8-bit unit as follows: S E G 1 0 0 0 3 0 6 0 9 0 C 0 F 1 2 1 5 1 8 1 B 1 E 2 1 b 0 H S E G 4 0 0 0 3 L 0 6 L 0 9 L 0 C L 0 F L 1 2 L 1 5 L 1 8 L 1 B L 1 E L 2 1 L H L H H H H H H H H H H H H H H H H H H H H H S E G 8 0 0 U 0 U 0 U 0 U 1 U 1 U 1 U 1 U 1 U 1 U 2 U U H 1 H 4 H 7 H A H D H 0 H 3 H 6 H 9 H C H F H 2 H S E G 1 2 0 1 L 0 4 L 0 7 L 0 A L 0 D L 1 0 L 1 3 L 1 6 L 1 9 L 1 C L 1 F L 2 2 L H H H H H H H H H H H H S E G 1 6 0 2 U 0 5 U 0 8 U 0 B U 0 E U 1 1 U 1 4 U 1 7 U 1 A U 1 D U 2 0 U 2 3 U H H H H H H H H H H H H S E G 2 0 0 2 L 0 5 L 0 8 L 0 B L 0 E L 1 1 L 1 4 L 1 7 L 1 A L 1 D L 2 0 L 2 3 L S E G 2 U D H U D H U D H U D H U D H U D H U D H U D H U D H U D H U D H U D H 4 K e y 1 K e y 2 K e y 1 K e y 2 K e y 1 K e y 2 K e y 1 K e y 2 S 1 /K 1 S 2 /K 2 S 3 /K 3 S 4 /K 4 S 5 /K 5 S 6 /K 6 S 7 /K 7 S 8 /K 8 S 9 /K 9 S 1 0 /K 1 0 S 1 1 /K 1 1 S 1 2 /K 1 2 S 1 3 /K 1 3 S 1 4 /K 1 4 S 1 5 /K 1 5 S 1 6 /K 1 6 b 0 b 2 b 4 b 6 b 1 b 7 The LED port is of the CMOS output configuration. Data is written to the LED port with the write command, starting from the least significant bit. In our application (see application circuits), the user adopts an internal NMOS device to a driver LED component by connecting VDD. When a bit of this port is 0, the corresponding LED lights up; when the bit is 1, the LED turns off. The data of bits 4 through 7 are ignored. M S B L S B b 3 Dimming Control b 2 b 1 b 0 L E D L E D L E D L E D D o n 't c a r e HT16515 provides an 8-step dimmer function on display by controlling the 3-bit binary command code. The full pulse width of grid signal is divided into 16 uniform sections by PWM (pulse width modulation) technology. S 6 / K 6 S 7 / K 7 3 · Display mode setting commands These commands initialize the HT16515 and select the number of segments and the number of grids (1/4~1/12 duty, 16 to 24 segments). When these commands are executed, the display is forcibly turned off, and key scanning is also stopped. To resume display, the display command ²ON² must be executed. If the same mode is selected, nothing happens. The key matrix is made up of a 16´2 matrix, as shown below. S 5 / K 5 2 The first 1 byte input to the HT16515 through the DI pin after the CS pin has fallen, is regarded as a command. If CS is set high while commands/data are transmitted, serial communication is initialized, and the commands/ data being transmitted are not valid (however, the commands/data previously transmitted remains valid). The key matrix scans the series key states at each level of the key strobe signal (Seg1/K1~Seg16/K16) output of the HT16515. The key strobe signal outputs are time-multiplexed signals from Seg1/K1~Seg16/K16. The states of inputs K0 and K1 are sampled by strobe signal Seg1/K1~Seg16/K16 and latched into the register. S 4 / K 4 1 Commands set the display mode and status of the VFD driver. Key Matrix and Key-Input Data Storage RAM S 3 / K 3 0 Commands The 16 uniform sections available form an 8-step dimmer via 3-bit binary code. The 8-step dimmer includes 1/16, 2/16, 4/16, 10/16, 11/16, 12/16, 13/16 and 14/16. The 1/16 pulse width indicates minimum lightness. The 14/16 pulse width represents maximum lightness (Refer to the display control command). S 2 / K 2 b 5 LED Port IG 1 IG 2 IG 3 IG 4 IG 5 IG 6 IG 7 IG 8 IG 9 IG 1 0 IG 1 1 IG 1 2 b 3 b 4 b 7 X X H U X X H L L o w e r H ig h e r 4 b its 4 b its S 1 / K 1 b 3 R e a d in g S e q u e n c e S 8 / K 8 S 9 / K 9 S 1 0 / K 1 0 S 1 1 / K 1 1 S 1 2 / K 1 2 S 1 3 / K 1 3 S 1 4 / K 1 4 S 1 5 / K 1 5 S 1 6 / K 1 6 K E Y 1 K E Y 2 Rev. 1.70 6 May 7, 2010 HT16515 M S B L S B 0 0 b 3 b 2 b 1 b 0 0 0 0 0 0 0 0 0 1 0 0 1 0 1 0 0 1 0 0 1 1 0 1 1 1 x x D o n 't c a r e Note: S e 0 : 1 : 0 : 1 : 0 : 1 : 0 : 1 : x : le c ts 4 5 6 7 8 9 1 0 1 1 1 2 D d ig d ig d ig d ig d ig d ig d ig d ig d ig is p its its its its its its its its its la y , 2 4 , 2 3 , 2 2 , 2 1 , 2 0 , 1 9 , 1 8 , 1 7 , 1 6 M o s e s e s e s e s e s e s e s e s e d e g m g m g m g m g m g m g m g m g m e n e n e n e n e n e n e n e n e n ts ts ts ts ts ts ts ts ts Power-on status: 12-digit, 16 segment mode is selected. · Data setting commands These commands set the data write and data read modes. M S B L S B 0 b 3 1 b 2 b 1 b 0 S e 0 0 0 1 1 0 1 1 D o n 't c a r e ts d a ta : W r ite : W r ite : R e a d : D o n 't w r ite d a ta d a ta k e y d c a re a n d re a d m o d e to d is p la y m e m o r y to L E D p o rt a ta A d d r e s s in c r e m e n t m o d e s e ttin g s ( d is p la y m e m o r y ) 0 : In c r e m e n ts a d d r e s s a fte r d a ta h a s b e e n w r itte n 1 : F ix e s a d d r e s s T e s t m o d e s e ttin g s 0 : N o rm a l m o d e 1 : T e s t m o d e , u s e r d o n 't u s e Note: power-on status: normal mode operation and address increment mode are set. · Address setting commands These commands set the address of the display memory. M S B 1 L S B b 5 1 b 4 b 3 b 2 b 1 b 0 A d d re s s (0 0 H ~ 2 3 H ) If address 24H or higher is set, data is ignored until a valid address is set. Note: power-on status: the address is set to 00H. · Display control commands M S B 1 L S B b 3 0 D o n 't c a r e b 2 b 1 b 0 S e 0 0 0 0 0 1 0 1 1 0 1 0 1 1 1 1 ts d im 0 : S e 1 : S e 0 : S e 1 : S e 0 : S e 1 : S e 0 : S e 1 : S e m in g t p u ls t p u ls t p u ls t p u ls t p u ls t p u ls t p u ls t p u ls q u e w e w e w e w e w e w e w e w a n tity id th to id th to id th to id th to id th to id th to id th to id th to 1 /1 6 2 /1 6 4 /1 6 1 0 /1 1 1 /1 1 2 /1 1 3 /1 1 4 /1 6 6 6 6 6 T u r n s o n /o ff d is p la y 0 : D is p la y o ff ( k e y s c a n c o n tin u e s ) 1 : D is p la y o n Note: power-on status: 1/16 pulse width is set and the display is turned off. Key scanning will be stopped during power-on status. Rev. 1.70 7 May 7, 2010 HT16515 Timing Diagrams tr1 ( tr2 ) tf 9 0 % S n /G n 1 0 % tS W C S tC W tC tC W S C L K tS U th D I tP tP H L L H D O Key Scanning and Display Timing K e y s c a n d a ta S n /K n o u tp u t D ig it 1 D ig it 2 D ig it 3 D ig it n D ig it 1 G 1 o u tp u t G 2 o u tp u t 1 /1 6 tD IS P G 3 o u tp u t G n o u tp u t t @ 5 0 0 m s 1 fra m e = T ´ (n + 1 ) Note: One cycle of key scanning consists of two frames, and data of 16´2 matrixes is stored in the RAM. Rev. 1.70 8 May 7, 2010 HT16515 Serial Communication Format · Reception (command/data write) C S C L K 1 2 b 0 D I 3 b 1 7 b 2 8 b 6 b 7 · Transmission (data read) C S 1 C L K 2 b 0 D I 3 b 1 4 b 2 5 b 3 6 b 4 7 b 5 8 b 6 tW 1 2 3 4 5 6 b 7 b 0 D O A d a ta r e a d c o m m a n d is s e t b 1 b 2 b 3 b 4 b 5 D a ta is r e a d Be sure to connect an external pull-high resistor to this pin (1kW to 10kW). Note: 1. When data is read, a wait time ²tW² of 1ms is necessary at 5V. 2. When data is read, a wait time ²tW² of 2ms is necessary at 3V. · Updating display memory by incrementing address C S C L K D I C o m m a n d 1 C o m m a n d 2 C o m m a n d 3 D a ta 1 D a ta n C o m m a n d 4 Note: Command 1: sets display mode Command 2: sets data Command 3: sets address Data 1 to n: transfers display data (36 bytes max.) Command 4: controls display · Updating specific addresses C S C L K D I C o m m a n d 1 C o m m a n d 2 D a ta C o m m a n d 2 D a ta n Note: Command 1: sets data Command 2: sets address Data: display data Rev. 1.70 9 May 7, 2010 HT16515 Application Circuits R 7 R 8 D 1 O S C R K e y 0 K e y 1 S 1 /K 1 D 2 S 2 /K 2 D 3 S 3 /K 3 D 4 S 4 /K 4 D 5 S 5 /K 5 D 6 S 6 /K 6 D 7 S 7 /K 7 D 8 S 8 /K 8 D 9 S 9 /K 9 D 1 0 D 1 1 D 1 2 D 1 3 D 1 4 D 1 5 D 1 S S S S S S S S S S 1 S 1 S 1 S 1 S 1 S 1 S 1 6 1 2 3 4 5 6 7 8 9 0 1 3 2 V F D 4 E f 5 6 S 1 0 /K 1 0 S 1 1 /K 1 1 S 1 2 /K 1 2 S 1 3 /K 1 3 S 1 4 /K 1 4 S 1 5 /K 1 5 S 1 6 /K 1 6 O S C V D D (5 V ) M C U S 1 7 /G 1 2 ~ S 2 4 /G 5 C S C L K D I H T 1 6 5 1 5 G 1 ~ G 4 R 1 D O L E D 0 V D D (5 V ) R 2 L E D 1 R 3 L E D 2 R 4 L E D 3 V V E E R 5 C + 5 V Note: V S S D D -3 0 V ROSC=82kW for oscillator resistor R1=1~10kW for external pull-high resistor R2~R6=750W~1.2kW R7~R8=10kW for external pull-low resistor D1~D16=1N4001 Ef=Filament voltage for VFD C=0.1mF~1.0mF Rev. 1.70 10 May 7, 2010 HT16515 Package Information 44-pin QFP (10mm´10mm) Outline Dimensions H C D G 2 3 3 3 I 3 4 2 2 L F A B E 1 2 4 4 K a J 1 Symbol A Dimensions in inch Min. Nom. Max. 0.512 ¾ 0.528 B 0.390 ¾ 0.398 C 0.512 ¾ 0.528 D 0.390 ¾ 0.398 E ¾ 0.031 ¾ F ¾ 0.012 ¾ G 0.075 ¾ 0.087 H ¾ ¾ 0.106 I 0.010 ¾ 0.020 J 0.029 ¾ 0.037 K 0.004 ¾ 0.008 L ¾ 0.004 ¾ a 0° ¾ 7° Symbol Rev. 1.70 1 1 Dimensions in mm Min. Nom. Max. A 13.00 ¾ 13.40 B 9.90 ¾ 10.10 C 13.00 ¾ 13.40 D 9.90 ¾ 10.10 E ¾ 0.80 ¾ F ¾ 0.30 ¾ G 1.90 ¾ 2.20 H ¾ ¾ 2.70 I 0.25 ¾ 0.50 J 0.73 ¾ 0.93 K 0.10 ¾ 0.20 L ¾ 0.10 ¾ a 0° ¾ 7° 11 May 7, 2010 HT16515 44-pin LQFP (10mm´10mm) (FP3.2mm) Outline Dimensions H C D G 2 3 3 3 I 3 4 2 2 F A B E 1 2 4 4 K a J 1 Symbol Dimensions in inch Min. Nom. Max. A 0.512 0.520 0.528 B 0.390 0.394 0.398 C 0.512 0.520 0.528 D 0.390 0.394 0.398 E ¾ 0.031 ¾ F ¾ 0.012 ¾ G 0.053 0.055 0.057 H ¾ ¾ 0.063 I 0.004 ¾ 0.010 J 0.041 0.047 0.053 K 0.004 ¾ 0.008 a 0° ¾ 7° Symbol Rev. 1.70 1 1 Dimensions in mm Min. Nom. Max. A 13.00 13.20 13.40 B 9.90 10.00 10.10 C 13.00 13.20 13.40 D 9.90 10.00 10.10 E ¾ 0.80 ¾ F ¾ 0.30 ¾ G 1.35 1.40 1.45 H ¾ ¾ 1.60 I 0.10 ¾ 0.25 J 1.05 1.20 1.35 K 0.10 ¾ 0.25 a 0° ¾ 7° 12 May 7, 2010 HT16515 Holtek Semiconductor Inc. (Headquarters) No.3, Creation Rd. II, Science Park, Hsinchu, Taiwan Tel: 886-3-563-1999 Fax: 886-3-563-1189 http://www.holtek.com.tw Holtek Semiconductor Inc. (Taipei Sales Office) 4F-2, No. 3-2, YuanQu St., Nankang Software Park, Taipei 115, Taiwan Tel: 886-2-2655-7070 Fax: 886-2-2655-7373 Fax: 886-2-2655-7383 (International sales hotline) Holtek Semiconductor Inc. (Shenzhen Sales Office) 5F, Unit A, Productivity Building, No.5 Gaoxin M 2nd Road, Nanshan District, Shenzhen, China 518057 Tel: 86-755-8616-9908, 86-755-8616-9308 Fax: 86-755-8616-9722 Holtek Semiconductor (USA), Inc. (North America Sales Office) 46729 Fremont Blvd., Fremont, CA 94538 Tel: 1-510-252-9880 Fax: 1-510-252-9885 http://www.holtek.com Copyright Ó 2010 by HOLTEK SEMICONDUCTOR INC. The information appearing in this Data Sheet is believed to be accurate at the time of publication. However, Holtek assumes no responsibility arising from the use of the specifications described. The applications mentioned herein are used solely for the purpose of illustration and Holtek makes no warranty or representation that such applications will be suitable without further modification, nor recommends the use of its products for application that may present a risk to human life due to malfunction or otherwise. Holtek¢s products are not authorized for use as critical components in life support devices or systems. Holtek reserves the right to alter its products without prior notification. For the most up-to-date information, please visit our web site at http://www.holtek.com.tw. Rev. 1.70 13 May 7, 2010