HANTRONIX HT16511 Datasheet

1/8 to 1/16 Duty VFD Controller

Features

·

Logic voltage: 5V

·

High-voltage output: VDD-35V max.

·

Multiple display
(12-segment & 16-digit to 20-segment & 8-digit)

·

12´4 matrix key scanning

·

8 steps dimmer circuit

·

5 LED output ports (20mA max.)

Applications

·

Consumer products panel function control

·

Industrial measuring instrument panel function control

General Description

HT16511 is a VFD (Vacuum Fluorescent Display) con
troller/driver that is driven on a 1/8 to 1/16 duty factor. It
consists of 12 segment output lines, 8 grid output lines,
8 segment/grid output drive lines, 5 LED output ports, a
control circuit, a display memory,and a key scancircuit.

HT16511

·

4-bit general purpose input port

·

No external resistors necessary for driver output
(provides PMOS open-drain and pull-low resistor
output)

·

Serial interface with MCU (CLK, CS, DI, DO)

·

52-pin QFP package

·

Other similar application panel function control

Serial data inputs to the HT16511 through a three-line

­serial interface. This VFD controller/driver is ideal as a
peripheral device for an MCU.

Block Diagram

D I

D O

C L K

C S

O S C

K 0 ~ K 3

S W 0 ~ S W 3

S e r i a l I / F

O S C

4 - B i t

L a t c h

C o m m a n d D e c o d e r

D i s p l a y R A M

2 0 - B i t

1 6 W o r d s

´

T i m i n g G e n e r a t o r

K e y S c a n

K e y D a t a R A M

1 2 )

( 4

´

5 - B i t L a t c h

L E D 0 ~ L E D 4

2 0 - B i t

O u t p u t L a t c h

1 6 - B i t

S h i f t R e g i s t e r

2 0 1 2

8

D a t a

S e l e c t o r

8

1 6

D i m m i n g C i r c u i t

V D D V S S V E E

S e g m e n t

D r i v e r

8

M u l t i p l e x e d

D r i v e r

8

G r i d

D r i v e r

1 2

S 1 / K 1 ~
S 1 2 / K 1 2

8

S 1 3 / G 1 6 ~
S 2 0 / G 6

8

G 1 ~ G 8

Rev. 1.30 1 December 21, 2004

Pin Assignment

HT16511

L E D 0

L E D 1

L E D 2

L E D 3

O S C

V S S

L E D 4

V D D

G 1

G 5

G 4

G 3

G 2

Pad Assignment

O S C

S W 1

S W 2

S W 3

S W 4

D O

6

D I

C L K

C S

K 0

K 1

K 2

K 3

2 3 2 4 2 5 2 6

S 9 / K 9

S 1 0 / K 1 0

G 3

G 2

4 2

4 3

2 5

S 1 0 / K 1 0

S 1 1 / K 1 1

4 04 14 24 34 44 54 64 7

3 9

G 6

3 8

G 7

3 7

G 8

3 6

S 2 0 / G 9

3 5

S 1 9 / G 1 0

3 4

V E E

3 3

V D D

3 2

S 1 8 / G 1 1

3 1

S 1 7 / G 1 2

3 0

S 1 6 / G 1 3

2 9

S 1 5 / G 1 4

2 8

S 1 4 / G 1 5

2 7

S 1 3 / G 1 6

S 1 2 / K 1 2

S 1 1 / K 1 1

G 4

4 0

4 1

3 9

3 8

3 7

3 6

3 5

3 4

3 3

3 2

3 1

3 0

2 6

2 9

2 8

2 7

G 5

G 6

G 7

G 8

S 2 0 / G 9

S 1 9 / G 1 0

V E E

V D D

S 1 8 / G 1 1

S 1 7 / G 1 2

S 1 6 / G 1 3

S 1 5 / G 1 4

S 1 4 / G 1 5

S 1 3 / G 1 6

S 1 2 / K 1 2

1

S W 1

2

S W 2

3

S W 3

4

S W 4

5

D O

6

D I

7

N C

8

C L K

9

C S

1 0

K 0
K 1

1 1
1 2

K 2

1 3

K 3

1 4 1 5 1 6 1 7 1 8 1 9 2 0 2 1 2 2

V D D

L E D 0

V S S

5 1

L E D 1

5 0

1

4 84 95 05 15 2

H T 1 6 5 1 1

5 2 Q F P - A

S 1 / K 1

S 2 / K 2

S 3 / K 3

S 4 / K 4

L E D 2

L E D 3

L E D 4

4 6

4 84 9

4 7

S 8 / K 8

S 5 / K 5

S 6 / K 6

S 7 / K 7

V D D

G 1

4 5

4 4

2

3

4

5

( 0 , 0 )

7

8

9

1 0

1 1

1 4 1 5

1 7

1 6

2 0 2 1

1 9

1 8

2 3 2 4

2 2

1 2

1 3

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

V D D

S 9 / K 9

Chip Size: 103.5 ´ 70.5 (mil)

2

* The IC substrate should be connected to VSS in the PCB layout artwork.

Rev. 1.30 2 December 21, 2004

HT16511

Pad Coordinates

Pad No. X Y Pad No. X Y

1
2 -1110.000 450.300 28 977.250 -612.000
3 -1110.000 345.300 29 977.250 -504.000
4 -1110.000 240.300 30 977.250 -396.000
5 -1110.000 135.300 31 977.250 -288.000
6 -1165.900 9.800 32 977.250 -180.000
7 -1110.000 -125.500 33 977.250 -55.150
8 -1110.000 -230.500 34 977.250 49.850

9 -1110.000 -335.500 35 977.250 173.350
10 -1110.000 -440.500 36 977.250 281.350
11 -1110.000 -545.500 37 977.250 389.350
12 -1110.000 -650.500 38 977.250 497.350
13 -1110.000 -755.500 39 977.250 605.350
14 -897.200 -560.300 40 977.250 713.350
15 -782.500 -560.300 41 405.500 545.400
16 -674.500 -560.300 42 297.500 545.400
17 -566.500 -560.300 43 189.500 545.400
18 -458.500 -560.300 44 81.500 545.400
19 -350.500 -560.300 45 -34.700 545.400
20 -242.500 -560.300 46 -173.950 684.850
21 -134.500 -560.300 47 -285.150 684.850
22 -26.500 -560.300 48 -390.150 684.850
23 81.500 -560.300 49 -501.350 684.850
24 189.500 -560.300 50 -606.350 684.850
25 297.500 -560.300 51 -765.200 726.350
26 405.500 -560.300

-1110.000

555.300 27 977.250 -720.000

Unit: mm

Pin Description

Pin No. Pin Name I/O Description

1~4 SW1~SW4 I 4-bit general purpose input port

5DO O

6DI I

7NC

8 CLK I Reads serial data at the rising edge, and outputs data at the falling edge.

9CS

10~13 K0~K3 I Keying data input to these pins is latched at the end of the display cycle.

14, 33, 45 VDD

15~26 S1/K1~S12/K12 O

27~32,
35~36

34 VEE

37~44 G8~G1 O

46~50 LED4~LED0 O LED driver output ports. This is a CMOS output pin.

51 VSS

52 OSC I Connected to an external resistor or an RC oscillator circuit.

S13/G16~S20/G9 O

Output serial data at the falling edge of the shift clock, starting from low order
bit. This is an NMOS open-drain output pin.

Input serial data at the rising edge of the shift clock, starting from the low order
bit.

No connection

¾

Initializes serial interface at the rising or falling edge of the HT16511. Then it
waits to receive a command. Data input after CS

I

command. While command data is processed, current processing is stopped,
and the serial interface is initialized. While CS

Positive power supply

¾

Segment or key source output pins (dual function). This is PMOS open-drain
and pull-low resistor output.

Segment or Grid driver output pins. These pins are selectable for segment or
grid driving. This is PMOS open-drain and pull-low resistor output.

VFD power supply

¾

Grid driver output pins (Grid only). This is PMOS open-drain and pull-low re
sistor output.

Negative power supply, ground

¾

has fallen is processed as a

is high, CLK is ignored.

-

Rev. 1.30 3 December 21, 2004

Approximate Internal Connections

HT16511

N M O S O U T

P M O S O U T C M O S O U T

V

V

D D

V

E E

D D

Absolute Maximum Ratings

Supply Voltage...........................VSS-0.3V to VSS+6.0V

Input Voltage..............................V

-0.3V to VDD+0.3V

SS

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 reliabil
ity.

D.C. Characteristics

Symbol Parameter

V

DD

V

EE

f

OSC

R

PL

I

DD

I

OL

I

OL1

I

OH1

I

OH21

I

OH22

I

OL3

V

IH

V

IL

V

OH1

V

OL1

V

OL2

Logic Supply Voltage

VFD Supply Voltage

Oscillation Frequency 5V

Output Pull-low Resistor 5V Driver output 50 100 150

Operating Current 5V No load, VFD display off

Driver Leakage Current 5V

LED Sink Current 5V

LED Source Current 5V

Segment/Key Source Current 5V

Segment/Grid Source Current 5V

DO Sink Current 5V

²H² Input Voltage ¾¾

²L² Input Voltage ¾¾

High-level Output Voltage 5V

Low-level Output Voltage 5V

Low-level Output Voltage 5V

V

DD

¾¾

¾¾

R

OSC

V

O=VDD

V

OL

V

OH

V

OH=VDD

V

OH=VDD

V

OL

LED0~LED4, I

LED0~LED4, I

DO, I

Operating Temperature...........................-25°Cto75°C

Storage Temperature............................-50°Cto125°C

Test Conditions

Conditions

Min. Typ. Max. Unit

4.5 5 5.5 V

0

¾ V

DD

=51kW

350 500 650 kHz

¾¾

5mA

-30V, VFD driver off ¾¾-10 mA

=1V, LED0~LED4

=0.9VDD, LED0~LED4

20

¾¾

-1 ¾¾

-2V, S1/K1~S12/K12 -3 ¾¾

-2V -15 ¾¾

=0.4V

OL2

=4mA

OH1

OL1

=-1mA

=20mA

0.7V

0.9V

4

¾¾

¾

DD

0

¾

¾

DD

0

¾

0

¾

V

DD

0.3V

V

DD

1V

0.4 V

-35

DD

Ta=25°C

V

kW

mA

mA

mA

mA

mA

V

V

V

-

Rev. 1.30 4 December 21, 2004