AS1100 AMSCO, AS1100 Datasheet - Page 3

• Manufacturer Part Number: AS1100
• Description: Serially Interfaced 8-Digit LED Driver
• Manufacturer: AMSCO

DataSheet4U.com
www.DataSheet4U.com
DataSheet
4
U
.com
Data Sheet AS1100
Pin Description
Revision 1.32, Oct. 2004
Parameter
Input Current DIN, CLK, LOAD
Logic High Input Voltage
Logic Low Input Voltage
Output High Voltage
Output Low Voltage
Hysteresis Voltage
Timing Characteristics
CLK Clock Period
CLK Pulse Width High
CLK Pulse Width Low
CLK Rise to LOAD Rise Hold
Time
DIN Setup Time
DIN Hold Time
Output Data Propagation Delay
LOAD Rising Edge to Next
Clock Rising Edge
Minimum LOAD Pulse High
Data-to-Segment Delay
Pin
1
2, 3, 5–8, 10,
11
4, 9
12
13
14–17, 20–23
18
19
24
Name
DIN
DIG 0–DIG 7
GND
LOAD
CLK
SEG A–G,
DP
ISET
VDD
DOUT
Function
Symbol Conditions
Data input. Data is programmed into the 16Bit shift register on the rising CLK edge
8 digit driver lines that sink the current from the common cathode of the display.
In shutdown mode the AS1100 switches the outputs to VDD
both GND pins must be connected
Strobe input. With the rising edge of the LOAD signal the 16 bit of serial data is latched into
the register.
Clock input. The interface is capable to support clock frequencies up to 10MHz. The serial
data is clocked into the internal shift register with the rising edge of the CLK signal. On the
DOUT pin the data is applied with the falling edge of CLK.
Seven segment driver lines including the decimal point. When a segment is turned off the
output is connected to GND.
The current into I
brightness.
Positive Supply Voltage (+5V)
Serial data output for cascading drivers. The output is valid after 16.5 clock cycles. The
output is never set to high impedance.
I
t
t
IH
t
t
V
V
LDCK
DSPD
V
t
t
V
t
t
CSH
t
t
CSW
DO
, I
V
CP
CH
CL
DS
DH
OH
OL
IH
IL
I
IL
V
DOUT, I
DOUT, I
DIN, CLK, LOAD
C
IN
LOAD
= 0V or VDD
DataSheet4U.com
= 50pF
SOURCE
SINK
SET
= 1.6mA
determines the peak current through the segments and therefore the
= -1mA
VDD - 1
Min
100
3.5
50
50
25
50
50
-1
0
0
Typ
1
Max
2.25
0.8
0.4
25
1
Page 3 of 12
Units
µA
ms
ns
ns
ns
ns
ns
ns
ns
ns
ns
V
V
V
V
V