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UPD16326A Datasheet(PDF) 3 Page - NEC

Part No. UPD16326A
Description  32-BIT FLUORESCENT DISPLAY TUBE DRIVER
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Maker  NEC [NEC]
Homepage  http://www.nec.com/
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UPD16326A Datasheet(HTML) 3 Page - NEC

 
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µPD16326A
3
PIN DESCRIPTION
Pin Symbol
Pin Name
Pin Number
Description
STB
Latch strobe input
5
H: Data through L: Data retention
A
RIGHT data input
3
When R/L = H, A: Input B: Output
B
LEFT data input
10
When R/L = L, A: Output B: Input
CLK
Clock input
6
Shift is executed on a fall.
BLK
Blanking input
4
H: O1 to O32: ALL “L”
R/L
Shift control input
8
H: Right shift mode A
→ O1 ... O32 → B
L: Left shift mode
B
→ O32 ... O1 → A
O1 to O32
High breakdown voltage output
13 - 44
130 V, 20 mA MAX
VDD1
Logic block power supply
9
5 V
±10 %
VDD2
Driver block power supply
1, 12
30 to 130 V
VSS1
Logic ground
5
Connected to system GND
VSS2
Driver ground
2, 11
Connected to system GND
TRUTH TABLE 1 (SHIFT REGISTER BLOCK)
Input
Output
Shift Register
R/L
CLK
A
B
H
Input
OutputNote 1
Execution of right shift
H
H or L
Output
Retained
L
OutputNote 2
Input
Execution of left shift
L
H or L
Output
Retained
Notes 1. On a clock fall, the data items of S31 are shifted to S32, and output from B.
2. On a clock fall, the data items of S2 are shifted to S1, and output from A.
TRUTH TABLE 2 (LATCH BLOCK)
STB
Operation
L
Retains Sn data immediately before STB becomes L.
H
Outputs shift register data.
TRUTH TABLE 3 (DRIVER BLOCK)
LnNote
STB
BLK
Driver output state
××
H
L (all driver outputs: L)
×
L
L
Outputs Sn data on STB fall.
LH
L
L
HH
L
H
Note Ln: Latch output
Remark
× = H or L, H = high level, L = Low level


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