SM5839AV datasheet(7/8 Pages) NPC

tên linh kiện	SM5839AV

Giải thích chi tiết về linh kiện	High-Speed Variable-Length Shift Register

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SM5839A

NIPPON PRECISION CIRCUITS—7

FUNCTIONAL DESCRIPTION

Initialization

After power is ﬁrst applied, up to a maximum of 128

input data cycles are considered invalid. However,

any cycle that momentarily sets the register length to

2 steps (by setting S1 to S6 all LOW) and then to the

desired value is considered to be the ﬁrst valid cycle.

Resister Length Select

The S0 to S6 inputs set the register length (L) to the

decimal-value given by the following equation using

positive logic (HIGH = 1 and LOW = 0).

L = 64

⋅ (S6) + 32 ⋅ (S5) + 16 ⋅ (S4) + 8 ⋅ (S3) +

4

⋅ (S2) + 2 ⋅ (S1) + (S0) + 1

Clock and Output Control

Length

S6

S5

S4

S3

S2

S1

S0

128

1111111

127

1111110

126

1111101

125

1111100

↓

↓↓↓↓↓↓↓

66

1000001

65

1000000

64

0111111

↓

↓↓↓↓↓↓↓

3

0000010

2

000000

×

Input

Shift register

Output

ENRC

CLK

OE

DOUT0 to DOUT7

××

L

–

High impedance

××

H

–

Enabled

HL

→ H

×

Circulating

–

LL

→ H

×

Non-circulating

–

Số phần tương tự - SM5839AV

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Mô tả tương tự - SM5839AV

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Số phần tương tự - SM5839AV

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