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DS1963S Datasheet(PDF) 14 Page - Dallas Semiconductor

No. de pieza DS1963S
Descripción Electrónicos  SHA iButton
PDF  37 Pages
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Fabricante Electrónico  DALLAS [Dallas Semiconductor]
Página de inicio  https://www.maximintegrated.com/en.html
Logo DALLAS - Dallas Semiconductor

DS1963S Datasheet(HTML) 14 Page - Dallas Semiconductor

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Memory and SHA Function Flow Chart (continued) Figure 7
AAh
Read Scratch-
pad
?
HIDE = 1 ?
Y
N
Y
Offset
= 11111b ?
N
Master
TX Reset ?
increments
DS1963S
SP. Offset
Y
N
TA1 (T7:T0),TA2 (T15:T8)
Bus Master RX
and E/S Byte
pad Offset = (T4:T0)
DS1963S sets Scratch-
S
Scratchpad Offset
Bus Master RX
Data Byte from
Bus Master RX
FFh Byte
Master
TX Reset ?
N
Y
Bus Master
RX "1"s
C3h
Erase Scratch-
Pad
?
Bus Master TX
TA1(T7:T0), TA2(T15:T8)
Y
N
AUTH = 0
CHLG = 0
Erase
Finished ?
N
Bus Master
RX "1"s
DS1963S fills the
whole scratchpad
with FFh bytes
R
Y
DS1963S TX "0"
DS1963S TX "1"
Master
TX Reset ?
Master
TX Reset ?
N
N
Y
Y
From Figure 7
2nd part
Spare
Vertical
From Figure 7
4th part
To Figure 7
4th part
To Figure 7
2nd part
Y
N
HIDE = 0
of Command, Address, E/S
Bus Master RX CRC16
Byte and data (HIDE = 0)
or FFh (HIDE = 1) starting
at the Scratchpad Offset



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