AS1116-BSST(2009) Ver la hoja de datos (PDF) - austriamicrosystems AG
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AS1116-BSST Datasheet PDF : 20 Pages
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AS1116
Datasheet - Detailed Description
Shutdown Mode
The AS1116 devices feature a shutdown mode, where they consume only 200nA (typ) current. Shutdown mode is
entered via a write to the Shutdown Register (see Table 8). For the AS1116, at that point, all segment current sources
and digital drivers are switched off, so that all segments are blanked.
Note: During shutdown mode the Digit-Registers maintain their 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 VDD (CMOS logic level).
When entering or leaving shutdown mode, the Feature Register is reset to its default values (all 0s) when Shutdown
Register bit D7 (page 10) = 0.
Note: When Shutdown Register bit D7 = 1, the Feature Register is left unchanged when entering or leaving shut-
down mode. If the AS1116 is used with an external clock, Shutdown Register bit D7 should be set to 1 when
writing to the Shutdown Register.
Digit- and Control-Registers
The AS1116 devices contain 8 Digit-Registers,11 control-registers and 8 diagnostic-registers, which are listed in Table
7. All registers are selected using a 8-bit address word, and communication is done via the serial interface.
! Digit Registers – These registers are realized with an on-chip 64-bit memory. Each digit can be controlled directly
without rewriting the whole register contents.
! Control Registers – These registers consist of decode mode, display intensity, number of scanned digits, shut-
down, display test and features selection registers.
Table 7. Register Address Map
Register
No-Op
Digit 0
Address
D15 D14 D13 D12 D11 D10 D9 D8
X0000000
X0000001
Digit 1
Digit 2
Digit 3
Digit 4
Digit 5
Digit 6
Digit 7
Decode-Mode
Global Intensity
X0000010
X0000011
X0000100
X0000101
X0000110
X0000111
X0001000
X0001001
X0001010
Scan Limit
X0001011
Shutdown
X0001100
Not Used
X0001101
Feature
X 0/1 0 0 1 1 1 0
Display Test Mode X 0 0 0 1 1 1 1
DIG0:DIG1 Intensity X 0 0 1 0 0 0 0
DIG2:DIG3 Intensity X 0 0 1 0 0 0 1
DIG4:DIG5 Intensity X 0 0 1 0 0 1 0
DIG6:DIG7 Intensity X 0 0 1 0 0 1 1
D7:D0
(see Table 10 on page 11,
Table 11 on page 11 and
Table 12 on page 11)
(see Table 9 on page 10)
(see Table 16 on page 13)
(see Table 18 on page 13)
(see Table 8 on page 10)
(see Table 19 on page 14)
(see Table 13 on page 12)
(see Table 17 on page 13)
(see Table 17 on page 13)
(see Table 17 on page 13)
(see Table 17 on page 13)
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