HT16512 Просмотр технического описания (PDF) - Holtek Semiconductor
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HT16512 Datasheet PDF : 11 Pages
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Pin Assignment
SW 0
SW 1
SW 2
SW 3
DO
DI
VSS
C LK
CS
K0
K1
44 43 42 41 40 39 38 37 36 35 34
1
33
2
32
3
31
4
30
5
H T16512
29
6
4 4 Q F P -A /L Q F P -A
28
7
27
8
26
9
25
10
24
11
23
12 13 14 15 16 17 18 19 20 21 22
G4
G5
S 1 5 /G 6
S 1 4 /G 7
S 1 3 /G 8
S 1 2 /G 9
VEE
S 1 1 /G 1 0
S 10
S9
S8
HT16512
Pin Description
Pin No.
Pin Name
1~4
SW0~SW3
5
6
7, 43
8
DO
DI
VSS
CLK
9
CS
10~13
14, 38
15~20
21~25
K0~K3
VDD
S0/K0~S5/K5
S6~S10
26, 28~31 S11/G10~S15/G6
27
37~32
42~39
44
VEE
G0~G5
LED0~LED3
OSC
I/O
Description
4-bit general purpose input port
I Whether these pins are used or not, they should be connected to VDD
or VSS.
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.
I
Input serial data at the rising edge of the shift clock, starting from the
low order bit.
¾
Negative power supply, ground
Both of the VSS (pin 7 and pin 43) should be connected to ground.
I
Reads serial data at the rising edge, and outputs data at the falling
edge.
Initializes serial interface at the rising or falling edge of the HT16512.
Then it waits to receive a command. Data input after CS has fallen is
I processed as a command. While command data is processed, current
processing is stopped, and the serial interface is initialized. While CS
is high, CLK is ignored.
I
Keying data input to these pins is latched at the end of the display cy-
cle.
¾ Posistive power supply
O
Segment or key source output pins (dual function). This is PMOS
open-drain and pull-low resistor output.
O
Segment driver output pins (segment only). This is PMOS open-drain
and pull-low resistor output.
Segment or Grid driver output pins. These pins are selectable for seg-
O ment or grid driving. This is PMOS open-drain and pull-low resistor
output.
¾ VFD power supply
O
Grid driver output pins (Grid only). This is PMOS open-drain and
pull-low resistor output.
O LED driver output ports. This is a CMOS output pin.
I Connected to an external resistor or an RC oscillator circuit.
Rev. 1.50
2
May 7, 2010
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