CS1087 Datasheet, PDF (6/12 Pages) ON Semiconductor – Vacuum Fluorescent Display Tube Driver

CS1087
APPLICATION INFORMATION
Table 1. Bit Pattern, G = Grid, A = Anode.
Bit #
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
Pin Name G1 G2 G3 A1 A2 A3 A4 A5 A6 A7 A8 A9 A10 A11 A12 A13
Bit #
17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32
Pin Name A14 A15 A16 A17 A18 A19 A20 A21 A22 A23 A24 A25 A26 A27 A28 A29
CLK_IN
1
2
3
4
5
6
7
8
9
D_IN
BIT 1 BIT 2 BIT 3 BIT 4 BIT 5 BIT 6 BIT 7 BIT 8 BIT 9
D_OUT
PREV PREV PREV PREV PREV PREV PREV PREV PREV
BIT 1 BIT 2 BIT 3 BIT 4 BIT 5 BIT 6 BIT 7 BIT 8 BIT 9
STB
ANODES
30 31
32
1
2
3
BIT 30 BIT 31 BIT 32 BIT 1 BIT 2 BIT 3
PREV PREV PREV PREV PREV PREV
BIT 30 BIT 31 BIT 32 BIT 1 BIT 2 BIT 3
GREN
GRIDS *
* Selected grid goes high only if input bit pattern from shift register to grid is high.
Figure 3. Typical Operation
Unused grid and anode drivers should have their
respective bits set to logic low in the data stream.
Multiple grid or anode drivers may be connected together,
but must be programmed to the same logic state for proper
device operation. Maximum package power must be
observed and care must be taken to maintian junction
temperature below +150°C.
Care must be taken when interfacing this part to a
microprocessor. The D_OUT output V_OH is specified at 3.9 V
to 5.1 V at an I_OUT of –1.0 mA. Lower current loads will
result in a higher output voltage. V_OH = 5.2 V (typ) with no
load. V_OH = 5.7 V (max) with no load. Protection or
workarounds for the device may be needed at the application
level. No protection is needed when interfacing with other
parts in this family (CS1087, CS1088, or CS1089).
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