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DS1925 数据表(PDF) 21 Page - Maxim Integrated Products

部件名 DS1925
功能描述  iButton High-Capacity Temperature Logger with 122KB Data-Log Memory
PDF  46 Pages
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制造商  MAXIM [Maxim Integrated Products]
网页  https://www.maximintegrated.com/en.html
标志 MAXIM - Maxim Integrated Products

DS1925 数据表(HTML) 21 Page - Maxim Integrated Products

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Figure 9a. Memory/Control Function Flowchart- XPC Sub-Commands Flowchart
DS1925
iButton High-Capacity Temperature Logger
with 122KB Data-Log Memory
www.maximintegrated.com
Maxim Integrated │ 21
MASTER Tx MEMORY OR
CONTROL FKT. COMMAND
0Fh
WRITE
SCRATCHPAD
MASTER Tx
TA1 (T7:T0)
MASTER Tx
TA2 (T15:T8)
DS1925 SETS SCRATCH-
PAD OFFSET = (T4:T0)
AND CLEARS (PF, AA)
MASTER Tx DATA BYTE
TO SCRATCHPAD OFFSET
DS1925 SETS (E4:E0)
= SCRATCHPAD OFFSET
MASTER
Tx RESET?
SCRATCH-
PAD OFFSET =
11111b?
PARTIAL
BYTE WRITTEN?
Y
N
Y
MASTER
Tx RESET?
N
MASTER Rx CRC16 OF
COMMAND, ADDRESS DATA
MASTER
Tx RESET?
N
MASTER Rx "1"s
Y
N
Y
DS1925 INCREMENTS
SCRATCHPAD OFFSET
N
Y
PF = 1
Y
N
AAh
READ
SCRATCHPAD
MASTER Rx
TA1 (T7:T0)
MASTER Rx
TA2 (T15:T8)
MASTER Rx ENDING
OFFSET WITH DATA
STATUS (E/S)
DS1925 SETS SCRATCH-
PAD OFFSET = (T4:T0)
MASTER
Tx RESET?
SCRATCH-
PAD OFFSET =
11111b?
Y
N
Y
MASTER Rx CRC16 OF
COMMAND, ADDRESS
DATA, E/S BYTE, AND
DATA STARTING AT THE
TARGET ADDRESS
MASTER
Tx RESET?
N
MASTER Rx "1"s
N
Y
DS1925 INCREMENTS
SCRATCHPAD OFFSET
Y
N
FROM ROM FUNCTIONS
FLOWCHART (FIGURE 12)
TO FIGURE 9
2nd PART
MASTER Rx DATA BYTE
TO SCRATCHPAD OFFSET
TO ROM FUNCTIONS
FLOWCHART (FIGURE 12)
FROM FIGURE 9
2nd PART



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