ASR9(2009) データシートの表示（PDF） - austriamicrosystems AG
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ASR9 Datasheet PDF : 20 Pages
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AS1116
Datasheet - Electrical Characteristics
6 Electrical Characteristics
VDD = 2.7 to 5.5V, RSET = 9.53kΩ, TAMB = -40 to +85°C, typ. values @ TAMB = +25ºC, VDD = 5.0V (unless otherwise
specified).
Table 3. Electrical Characteristics
Symbol
Parameter
Conditions
Min
Typ Max Unit
VDD
Operating Supply Voltage
2.7
5.5 V
IDDSD
Shutdown Supply Current
All digital inputs at VDD or
GND, TAMB = +25ºC
0.2 2 µA
RSET = open circuit.
IDD
Operating Supply Current
All segments and decimal
point on; ISEG = -40mA.
0.35 0.6
mA
335
fOSC
Display Scan Rate
8 digits scanned
0.6
0.8 1.2 kHz
IDIGIT
Digit Drive Sink Current
VOUT = 0.65V
320
mA
ISEG
ΔISEG
Segment Drive Source Current
-37
VDD = 5.0V, VOUT = (VDD -1V)
Segment Drive Current Matching
-42 -47 mA
3
%
ISEG
Segment Drive Source Current
Average Current
47 mA
Table 4. Logic Inputs/Outputs Characteristics
Symbol
IIH, IIL
Parameter
Input Current SDI, SCL, LD
VIH
Logic High Input Voltage
VIL
Logic Low Input Voltage
VOH
Output High Voltage
VOL
Output Low Voltage
ΔVI
Hysteresis Voltage
Open Detection Level Threshold
Short Detection Level Threshold
Conditions
VIN = 0V or VDD
4.5V < VDD < 5.5V
2.7V < VDD < 4.5V
VDD = 5.0V
VDD = 3.0V
SDO, ISOURCE = -1mA,
VDD = 5.0V
SDO, ISOURCE = -1mA,
VDD = 3.0V
SDO, ISINK = 1mA
SDI, SCL, LD
Min
Typ Max Unit
-1
1
µA
0.6 x VDD
V
0.7 x VDD
V
0.8
V
0.6
VDD - 1
V
VDD - 0.5
0.4 V
1
V
0.7x
VDD
0.75x 0.8x
VDD VDD
V
0.05x VDD
0.1x
VDD
0.15x
VDD
V
Table 5. SPI Timing Characteristics
Symbol
tCP
tCH
tCL
tCSS
tCSH
tDS
tDH
tDO
tLDCK
tCSW
tDSPD
Parameter
SCL Clock Period
SCL Pulse Width High
SCL Pulse Width Low
LD to SCL Rise Setup Time
SCL Rise to LD Rise Hold Time
SDI Setup Time
SDI Hold Time
Output Data Propagation Delay
LD Rising Edge to SCL Rising Edge
Minimum LD Pulse High
Data-to-Segment Delay
Conditions
Min Typ Max Unit
100
ns
20
ns
20
ns
25
ns
10
ns
0
ns
5
ns
CLOAD = 50pF
25
ns
20
ns
20
ns
2.25 ms
See Figure 18 on page 8 for more information.
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