TP6317

1/4 TO 1/11-DUTY VFD CONTROLLER/DRIVER

General Description

The TP6317 is a VFD (Vacuum Fluorescent Display)
controller/driver that is driven on a 1/4 to 1/11-duty
factor. It consists of 11 segment output lines, 6 grid
output lines, 5 segment/grid output drivelines, a
display memory, a control circuit, stand-by control,
and a key scan circuit. Serial data is input to TP6317
through a three-line serial interface. This VFD
controller/driver is ideal as a peripheral device for
front panel control of green DVD/VCD feature.

Features

Multiple display modes (11-segment & 11-digit to

16-segment & 4-digit)

Key scanning (6

4 matrices)

Dimming circuit (eight steps)

High-voltage output (V

35V max)

LED ports (3 chs, 20 mA max)

General-purpose input port (1 bits)

No external resistor necessary for driver outputs

(P-ch open-drain + pull-down resistor output)

Remote control code coding support NEC format

Stand-by control

Serial interface (CLK, STB, D

, D

OUT

)

Ordering Information

TP 6317

Package Type F: LQFP

Footprint

S: 2.0 mm
L: 3.2 mm

Footprint

Version

Package Type

Block Diagram

OUT

CLK

STB

Serial I/F

OSC

Command decoder

Display memory

16bit x 14 word

Timing generator key

scan

Key data memory

(4x6)

3 bit latch

1 bi

t

l
a
tc

Dimming circuit

16-

b
i
t o

u
t
p
u
t

la

16-

b
i
t o

u
t
p
u
t

la

Seg

e
n
t dr

i
v
er

gme

n
t/

i
d
dr

dri

v
e
r

Data

e
l
e
cto

(+5V)

(0V)

(-30V)

LED

Seg

/Gird

Seg

/Gird

Grid

Key1

Key4

SW1

LED

IR receiver

IR_IN

Power Control

PWCTL

LED

SDA

SCL

Version 1.0

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September 2003

TP6317

1/4 TO 1/11-DUTY VFD CONTROLLER/DRIVER

Pin Configuration

_
I
N

Y
1

Y
2

KEY 3

KEY 4

Seg1 / KS1

Seg2 / KS2

Seg3 / KS3

Seg4 / KS4

Seg5 / KS5

Seg6 / KS6

Seg7

Seg8

1
0

1
1

S
e
g

12 /

r
i
d

11

3

/
G

r
i
d

g
1

4
/

r
i
d

g
1

5
/

r
i
d

g
1

6
/

r
i
d

i
d

Grid 4

Grid 3

Grid 2

Grid 1

PWCTL

LED3

LED 2

LED 1

VSS

OSC

Pin Description

Pin No.

Symbol

Pin Name

Description

6 D

Date

input

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

5 D

OUT

Date

output

Outputs serial data at falling edge of shift clock, starting
from the lower bit. This is N-ch open-drain output pin.

9 STB

Strobe

Initializes the serial interface at rising or falling edge to
make TP6317 waiting for reception of command. Data
input after STB falls is processed as command. While
command data is processed, current processing is
stopped, and serial interface is initialized. While STB is
high, CLK is ignored.

8 CLK Clock

input

Reads serial data at rising edge, and outputs data at falling
edge.

44 OSC Oscillator

Connect a resistor to this pin to determine the oscillation
frequency to this pin.

15 to 20

Seg

/KS

Seg

/KS

High-voltage output

Segment output pins (Dual function as key source).

21 to 25

Seg

to Seg

High-voltage output

(Segment)

Segment output pins.

37 to 32

Grid

to Grid

High-voltage output

(Grid)

Grid output pins.

26, 28 to 31

Seg

/Grid

Seg

/Grid

High-voltage output

(Segment/grid)

These pins are selectable for segment or grid driving.

42 to 40

LED

to LED

LED output

CMOS output. +20 mA max.

10 to 13

KEY

to KEY

Key data input

Data input to these pins is latched at the end of display
cycle.

1 SW

Switch input

This pin is 1-bit general-purpose input port.

IR-IN

IR input

Optic receiver input.

SDA

Data

Serial data line.

SCL

Clock

Serial clock line.

14, 38

Logic

power

10%

7, 43

Logic ground

Connect this pin to system GND.

27 V

Pull-down

level

35 V max.

PWCTL

Power control

Power on control

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September 2003

TP6317

1/4 TO 1/11-DUTY VFD CONTROLLER/DRIVER

Functional Description

Display RAM and Power control RAM Address

The display RAM stores the data transmitted from an external device to TP6317 through the serial interface, and is
assigned addresses as follows, in units of 8 bits:

Seg

Seg

00H

01H

DIG1

02H

03H

DIG2

04H

05H

DIG3

06H

07H

DIG4

08H

09H

DIG5

0AH

0BH

DIG6

0CH

0DH

DIG7

0EH

0FH

DIG8

10H

11H

DIG9

12H

13H

DIG10

14H

15H

DIG11

16H

A0~A3

16H

A4~A7

17H

A8~A11

17H

A12~A15

Pwctl
Custom
Address

18H

D0~D3

SET1

18H

D4~D7

SET1

19H

D0~D3

SET2

19H

D4~D7
SET2

Remote
Code
Set1~Set2

1AH

D0~D3

SET3

1AH

D4~D7

SET3

1BH

D0~D3

SET4

1BH

D4~D7
SET4

Remote
Code
Set3~Set4

1CH

D0~D3

SET5

1CH

D4~D7

SET5

1DH

D0~D3

SET6

1DH

D4~D7
SET6

Remote
Code
Set5~Set6

1EH

D0~D3

SET7

1EH

D4~D7

SET7

1FH

D0~D3

SET8

1FH

D4~D7
SET8

Remote
Code
Set7~Set8

20H

Key1~Key4

20H

Key5~Key8

21H

Key9~Kry12

21H

Key13~Key16

Key
Code

22H

Key17~Key20

22H

Key21~Key24

Key
Code

Notes:
1.

Unused remote code must be filled with FFH (Ex.: SET8 unused FFH 1FH).

Key code must be set "1" for wakeup mode and clear with "0" to unable this function. Key1 is a special key.
Non-masking can always have the wakeup function, so recommend using the power key.

(Ex.: If you want Key2 be set with wakeup mode, then bit 1 of 20H must be set "1";

on the other side, if you want key2 be set without wakeup mode, then bit1 of 20H must clear with "0.")

XX H

Lower 4 bits Higher 4 bits.

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September 2003

TP6317

1/4 TO 1/11-DUTY VFD CONTROLLER/DRIVER

Key Matrix and Key-Input Data Storage

RAM

---

SW1

Don't care

MSB

LSB

The key matrix is of 6

4 configuration, as shown

below.

KEY1

KEY2

KEY3

KEY4

Seg1/KS1

Seg2/KS2

Seg3/KS3

Seg4/KS4

Seg5/KS5

Seg6/KS6

Power on code

MSB

LSB

key

Key code : key1~key8

MSB

LSB

The data of each key is stored as illustrated below,
and is read by a read command, starting from the
least significant bit.

Key

Seg

/ KS

Seg

/ KS

Seg

/ KS

Seg

/ KS

Seg

/ KS

Seg

/ KS

Reading sequence

b0 b3

b4 b7

key

Key code : key9~key16

MSB

LSB

LED PORT & Power OFF

Data is written to the LED port by a write command,
starting from the least significant bit of the port.
When a bit of this port is 0, the corresponding LED
lights; when the bit is 1, the LED goes off. The data
of bits 3 through 7 is ignored. When the power is off,
the bit is 0; the PWCTL pin goes low (Power Off).

key

Key code : key17~key24

MSB

LSB

Power

off

----

Don't care

LED1
LED2

Power off

LED3

Commands

A command sets the display mode and status of the
VFD driver.
The first 1 byte input to TP6317 through the D

after the STB pin falls is regarded as a command.

On power application, all LEDs and power off are "1".

If STB is high while a command/data is transmitted,
serial communication is initialized, and the
transmitting command/data is invalid; however, the
command/data already transmitted remains valid.

SW, Power on Code and key Data

The SW, power on code and key data are read by a
read command, starting from the least significant bit.
Bits 5 through 8 of the SW data are 0; Bits 2 through
4 of the SW data are skipped (Please refer to
application notes in this document).

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September 2003

TP6317

1/4 TO 1/11-DUTY VFD CONTROLLER/DRIVER

(1) Display mode setting command

(4) Display control command

This command initializes TP6317 and selects the
number of segments and number of grids (1/4 to 1/11-
duty, 11 segments to 16 segments).

----

Dimming quantity settings.

000 : Sets pulse width to 1/16.

001 : Sets pulse width to 2/16.

010 : Sets pulse width to 4/16.

011 : Sets pulse width to 10/16.
100 : Sets pulse width to 11/16.

101 : Sets pulse width to 12/16.

110 : Sets pulse width to 13/16.

111 : Sets pulse width to 14/16.

MSB

LSB

Irrelevant

Turns on/off display

0:Display off (key scan continues)
1:Display on.

On power application, the 11-digit, 11-segment mode
is selected.

----

MSB

LSB

Display mode settings

Irrelevant

000 : 4 digits, 16 segments
001 : 5 digits, 16 segments
010 : 6 digits, 16 segments
011 : 7 digits, 15 segments
100 : 8 digits, 14 segments
101 : 9 digits, 13 segments
110 : 10 digits, 12 segments
111 : 11 digits, 11 segments

(2) Data setting commands

On power application, the 14/16-pulse width is set
and the display is turned off.

Key Scanning and Display Timing

This command sets data write and read modes.

DIG1

DIG2

DIG3

..............

DIGn

1 2

...

SEG Output

DIG1

1 frame=T

DISP

x (n+1)

TDISP 500µ s

Key scan data

1/16

DISP

----

MSB

LSB

Irrelevant

Address increment mode (display memory).

0:Increments address after data has been written.

1:Fixes address.

Test mode settings.

0:Normal operation.

1:Test mode.

Data write and read mode settings

00:Writes data to display memory
01:Writes data to LED port & Power off
10:Reads key data.

11:Reads SW, Power on code & key

data.

On power application, the normal operation mode and
address increment mode set.

One cycle of key scanning consists of two frames,
and data of 6

4 matrices is stored in RAM.

(3) Address setting command

This command sets an address of the display memory
or power control data memory.

Serial Communication Format

Reception (command/data write)

----

Address (00H-22H)

MSB

LSB

......

STB

DIN

CLK

If data is cintiguous

If address 23H or higher is set, the data is ignored;
unit a correct address is set.

On power application, the address is set to 00H.

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September 2003

TP6317

1/4 TO 1/11-DUTY VFD CONTROLLER/DRIVER

Transmission (data read)

Because the D

OUT

pin is an N-ch open-drain output

pin, be sure to connect an external pull-up resistor to
this pin (1k

to 10 k

STB

DIN

CLK

DOUT

WAIT

Data reading command is set.

Data reading starts.

*: When data is read, a wait time (t

WAIT)

of 1

s is

necessary from the rising of the eighth clock that has
set the command till the falling of the first clock that
has read the data.

Absolute Maximum Ratings (Ta = 25°C, Vss = 0V)

Parameter

Symbol

Ratings

Unit

Logic Supply Voltage

-0.5 to + 7.0

Driver Supply Voltage

+0.5 to V

-40

Logic Input Voltage

-0.5 to V

+0.5

VFD Driver Output Voltage

0.5 to V

+0.5

LED Driver Output Current

+25

VFD Driver Output Current

-40 (grid)

-15 (segment)

Power Dissipation

800

Operating Ambient Temperature

opt

0 to +70

Storage Temperature

stg

-65 to +150

* Derate at 6.4 mW/

at Ta = 25

or higher.

Recommended Operating Conditions (Ta = -20°C to +70°C, Vss = 0V)

Parameter

Symbol

Min.

Typ.

Max.

Unit

Test Condition

Logic Supply Voltage

4.5 5

5.5

High-Level input Voltage

0.7V

Low-Level input Voltage

0.3V

Driver Supply Voltage

-35

Maximum power consumption P

MAX

= VFD driver dissipation + R

dissipation + LED driver dissipation + dynamic power

consumption.
Where segment current = 3 mA, grid current = 15mA, and LED current = 20 mA,
VFD driver dissipation = number of segments x 6 + number of grids/(number of grids + 1) x 30 (mW)
R

dissipation

-V

)

/50 x (segment+1) (mW)

LED driver dissipation = number of LEDs x 20(mW)
Dynamic power consumption = V

x 5(mW)

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September 2003

TP6317

1/4 TO 1/11-DUTY VFD CONTROLLER/DRIVER

DC Electrical Characteristics

(Ta= -20°C to +70°C, V

= 4.5V to 5.5V, V

= 0V, V

= V

- 35V)

Parameter

Symbol

Min.

Typ.

Max.

Unit

Test Conditions

High-Level Output Voltage

OH1

0.9

V LED

LED

, I

OH1

= -1 mA

Low-Level Output Voltage

OL1

1 V LED

LED

, I

OL1

= 20 mA

Low-Level Output Voltage

OL2

0.4 V

OUT

, I

OL2

= 4 mA

High-Level Output Current

OH21

-3

mA V

= V

2V, Seg

to Seg

High-Level Output Current

OH22

-15

= V

2V,Grid

to Grid

Seg

/Seg

to Seg

/Seg

Driver Leakage Current

OLEAK

-10

= V

- 35V, Drive off

Output Pull-Down Resistor

100

150

Drive output

Input Current

= V

or V

High-Level Input Voltage

0.6

Low-Level Input Voltage

0.3

Hysteresis Voltage

0.35

CLK,

, STB

Dynamic Current Consumption

DDdyn

Under no load, display off

AC (Switching) Electrical Characteristics

(Ta = -20°C to +70°C, V

= 4.5V to 5.5V, V

= -30V)

Parameter

Symbol

Min.

Typ.

Max.

Unit

Test Conditions

Oscillation Frequency

OSC

350

500

650

kHz

R = 33k

Propagation Delay Time

PLZ

300

PZL

100

CLK

DOUT

CL = 15pF,RL = 10k

TZH1

Seg1 to Seg11

Rise Time

TZH2

0.5

CL = 300 PF

Grid1 to Grid6

Seg12/Grid11

Seg16/Grid7

Fall Time

THZ

120

CL = 300 pF, Segn, Gridn

Maximum Clock Frequency

max

MHz

Duty = 50%

Input Capacitance

Timing Conditions (Ta = -20°C to +70°C, V

= 4.5V to 5.5V)

Parameter

Symbol

Min.

Typ.

Max.

Unit

Test Conditions

Clock Pulse Width

PWCLK

400

Strobe Pulse Width

PWSTB

Data Setup Time

SETUP

100 ns

Data Hold Time

HOLD

100 ns

Clock-Strobe Time

CLK-STB

CLK

STB

Wait Time

WAIT

CLK

Version 1.0

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September 2003

TP6317

1/4 TO 1/11-DUTY VFD CONTROLLER/DRIVER

Application

For green DVD or VCD

Updating Display Memory By Incrementing Address

Command1

Command2

Command3

Data 1

Data n

Command 4

STB

CLK

DIN

......

Command1: sets display mode
Command2: sets data
Command3: sets address
Data 1 to n: transfers display data (22 bytes max.)
Command4: controls display

Updating Specific Address

Command1

Command2

Data

STB

CLK

DIN

Command2

Data

Command1: sets data
Command2: sets address
Data: display data

Version 1.0

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September 2003

TP6317

1/4 TO 1/11-DUTY VFD CONTROLLER/DRIVER

Package Information

44-Pin Plastic LQFP Long-Lead (Footprint = 3.2mm)

11 12

NOTE
Each lead centerline is located within 0.16mm of its
true position (T.P.) at maximum material.

(Unit: mm)

Item

Millimeters

13.2 ± 0.2

10.0 ± 0.2

13.2 ± 0.2

10.0 ± 0.2

E 0.37(TYP.)
F 0.8

BSC

+0.2

G 0.3

-0.1

H 1.6

1.2 ± 0.15

J 12

± 1

K 12

± 1

L 1.7

MAX

M 1.4±

0.1

N 0

MIN

O +3

-3

Version 1.0

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September 2003

TP6317

1/4 TO 1/11-DUTY VFD CONTROLLER/DRIVER

48-Pin Plastic LQFP Short-Lead (Footprint = 2.0mm)

NOTE
Each lead centerline is located within 0.16mm of its
true position (T.P.) at maximum material

(Unit: mm)

Item

Millimeters

9.0 ± 0.2

7.0 ± 0.2

9.0 ± 0.2

7.0 ± 0.2

E 0.22±0.05
F 0.5

BSC

+0.05

G 0.2

-0.05

H 1.0

0.6 ± 0.15

J 12

± 1

K 12

± 1

L 1.6

MAX

M 1.4±

0.1

N 0

MIN

O +3

-3

Headquarters

5 F, No. 10, Prosperity Road 1, Science-Based Industrial Park, Hsinchu 300, Taiwan, R.O.C
Tel.: 886-3-563-2515 Fax: 886-3-564-1728

Taipei Office

5 F, No.27, Min Chuan W. Rd. Taipei 104, Taiwan, R.O.C
Tel.: 886-2-2585-6858 Fax: 886-2-2594-1104

Shenzhen Office

Room 802, Tower A, World Trade Plaza, Fahong Rd., Fatian, Shenzhen, China
Tel.: 86-755-8367-9985 Fax: 86-755-8367-9518

Version 1.0

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September 2003

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