AS1115 DB-YELLOW austriamicrosystems, AS1115 DB-YELLOW Datasheet - Page 12

• Manufacturer Part Number: AS1115 DB-YELLOW
• Description: BOARD DEMO AS1115 YELLOW
• Manufacturer: austriamicrosystems

Specifications of AS1115 DB-YELLOW

• Current - Output / Channel: *
• Outputs And Type: 8, Non-Isolated
• Voltage - Output: *
• Features: 64 LED + 16 keys, I⊃2C
• Voltage - Input: 2.7 ~ 5.5 V
• Utilized Ic / Part: AS1115
• Lead Free Status / RoHS Status: Lead free by exemption / RoHS compliant by exemption

AS1115
Datasheet - D e t a i l e d D e s c r i p t i o n
Initial Power-Up
On initial power-up, the AS1115 registers are reset to their default values, the display is blanked, and the device goes
into shutdown mode. At this time, all registers should be programmed for normal operation.
Note: The default settings enable only scanning of one digit; the internal decoder is disabled and the Intensity Control
Shutdown Mode
The AS1115 devices feature a shutdown mode, where they consume only 200nA (typ) current. Shutdown mode is
entered via a write to the Shutdown Register (see
data.
Shutdown mode can either be used as a means to reduce power consumption or for generating a flashing display
(repeatedly entering and leaving shutdown mode). For minimum supply current in shutdown mode, logic input should
be at GND or V
When entering or leaving shutdown mode, the Feature Register is reset to its default values (all 0s) when Shutdown
Register bit D7 (page 13) = 0.
Note:
Digit- and Control-Registers
The AS1115 devices contain 8 Digit-Registers,11 control-registers and 10 diagnostic-registers, which are listed in
6. All registers are selected using a 8-bit address word, and communication is done via the I²C interface.
www.austriamicrosystems.com/LED-Driver-ICs/AS1115
Table 6. Register Address Map
!
!
without rewriting the whole register contents.
down, display test and features selection registers.
Digit Registers – These registers are realized with an on-chip 64-bit memory. Each digit can be controlled directly
Control Registers – These registers consist of decode mode, display intensity, number of scanned digits, shut-
DIG0:DIG1 Intensity
DIG2:DIG3 Intensity
DIG4:DIG5 Intensity
DIG6:DIG7 Intensity
Display Test Mode
Global Intensity
Self-Adressing
Decode-Mode
Register
When
down mode. If the AS1115 is used with an external clock, Shutdown Register bit D7 should be set to 1 when
writing to the Shutdown Register.
Scan Limit
Shutdown
Register
Feature
Digit 0
Digit 1
Digit 2
Digit 3
Digit 4
Digit 5
Digit 6
Digit 7
Shutdown Register bit D7 = 1, the Feature Register is left unchanged when entering or leaving shut-
DD
(see page
(CMOS logic level).
D15:D13
17) is set to the minimum values.
000
000
000
000
000
000
000
000
000
000
000
000
001
000
000
000
000
000
000
D12
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
D11
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
0
0
0
0
Table
D10
Revision 1.07
7). During shutdown mode the Digit-Registers maintain their
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
Address
D9
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
D8
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
(see Table 17 on page
(see Table 19 on page
(see Table 20 on page
(see Table 14 on page
(see Table 18 on page
(see Table 18 on page
(see Table 18 on page
(see Table 18 on page
(see Table 8 on page
(see Table 7 on page
(see
Table 10 on page 14
Table 11 on page
Table 9 on page
D7:D0
15)
and
14,
13)
13)
17)
17)
18)
16)
17)
17)
17)
17)
Page
Table
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