sc16461 Silan, sc16461 Datasheet - Page 3

• Manufacturer Part Number: sc16461
• Description: Led Driver Ic Of 12~11 X 6~7 Segments Display
• Manufacturer: Silan

PIN DESCRIPTIONS
FUNCTION DESCRIPTIONS
COMMANDS
“ HIGH” to “ LOW” state. If for some reason the STB pin is set to “ HIGH” while data or commands are being
transmitted, the serial communication is initialized, and the data/commands being transmitted are considered
invalid.
HANGZHOU SILAN MICROELECTRONICS CO.,LTD
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Pin NO.
23, 24, 27,
26, 29, 32
28, 30, 31
A command is the first byte (b0 to b7) inputted to SC16461 via the DIN pin after STB pin has changed from
Command 1: display mode setting commands
the first one byte (b0 to b7) transmitted to SC16461 via the DIN pin when STB is “ LOW” . However, for these
commands, the bit 3 to bit 6 (b2 to b5) are ignores, bit 7 & bit 8 (b6 to b7) are given a value of “ 0”
segments, 6 to 7 grids). A display commands ON must be executed in order to resume display. If the same
mode setting is selected, no command execution is take place, therefore, nothing happens.
10~12,
14~20
6, 7, 8
9, 25
SC16461 provides 2 display mode settings as shown in the diagram below: as stated earlier a command is
The display mode setting commands determine the number of segments and grids to be used (12 to 11
When power is turned “ ON” , the 7-Grid, 11-Segment mode is selected.
21
22
13
1
2
3
4
5
Pin name
OSC
DOUT
DIN
CLK
STB
K1 to K3
GND
SG1/KS1 ~
SG10/KS10
SG11
SG12/GR7
V
GR6 to GR1
NC
DD
MSB
0
Description
Oscillator input pin. A resistor is connected to this pin to determine the
oscillation frequency.
Data output pin (N-channel, open – drain). This pin outputs serial data at
the falling edge of the shift clock.
Data input pin. This pin reads serial data at the rising edge of the shift clock
(starting from the lower bit).
Clock input pin. This pin reads serial data at the rising edge and outputs
data at the falling edge.
Serial interface strobe pin. The data input after the STB has fallen is
processed as a command. When this pin is “ HIGH” , CLK is ignored.
Key data input pins. The data sent to these pins are latched at the end of
the display cycle. (Internal pull-low resistor).
Ground pin.
Segment output pins (p-channel, open drain) also acts as the key source.
Segment output pins (p-channel, open drain).
Segment/Grid output pins.
Power supply.
Grid output pins.
No connection.
0
-
Relevant
-
Not
-
- b1 b0
LSB
Display Mode Settings:
10: 6 Grids, 12 Segments
11: 7 Grids, 11 Segments
REV:1.0
SC16461
Page 3 of 10
2004.08.03