参数资料
型号: DS1923-F5#
厂商: Maxim Integrated
文件页数: 49/55页
文件大小: 0K
描述: IBUTTON TEMP/HUMIDITY LOGGER F5
产品培训模块: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
RoHS指令信息: IButton RoHS Compliance Plan
标准包装: 5
系列: iButton®
存储容量: 512B
存储器类型: NVSRAM(非易失 SRAM)
产品目录页面: 1431 (CN2011-ZH PDF)
DS1923
iButton Hygrochron Temperature/Humidity
Logger with 8KB Data-Log Memory
With only a single device connected to the bus master,
the communication of step 2 looks like this:
MASTER MODE
Tx
Rx
Tx
Tx
Tx
Tx
Tx
Tx
Tx
Rx
Tx
Tx
Rx
Rx
Rx
Rx
Tx
Rx
Tx
Tx
Tx
DATA (LSB FIRST)
(Reset)
(Presence)
CCh
0Fh
00h
02h
<25 Data Bytes>
<7 FFh Bytes>
(Reset)
(Presence)
CCh
AAh
00h
02h
1Fh
<32 Data Bytes>
(Reset)
(Presence)
CCh
99h
00h
COMMENTS
Reset pulse
Presence pulse
Issue “Skip ROM ” command
Issue “Write Scratchpad” command
TA1, beginning offset = 00h
TA2, address = 0200h
Write 25 bytes of data to scratchpad
Write through the end of the scratchpad
Reset pulse
Presence pulse
Issue “Skip ROM ” command
Issue “Read Scratchpad” command
Read TA1, beginning offset = 00h
Read TA2, address = 0200h
Read E/S, ending offset = 1Fh, flags = 0h
Read scratchpad data and verify
Reset pulse
Presence pulse
Issue “Skip ROM ” command
Issue “Copy Scratchpad” command
TA1
Tx
02h
TA2
(AUTHORIZATION CODE)
Tx
Tx
Tx
Rx
1Fh
<8 FFh Bytes>
(Reset)
(Presence)
E/S
Send dummy password
Reset pulse
Presence pulse
Step 3: Start the new mission.
With only a single device connected to the bus master,
the communication of step 3 looks like this:
If step 3 was successful, the MIP bit in the General
Status register is 1, the MEMCLR bit is 0, and the
Mission Start Delay counts down.
MASTER MODE
Tx
Rx
Tx
Tx
Tx
Tx
Tx
Rx
Maxim Integrated
DATA (LSB FIRST)
(Reset)
(Presence)
CCh
CCh
<8 FFh Bytes>
FFh
(Reset)
(Presence)
COMMENTS
Reset pulse
Presence pulse
Issue “Skip ROM ” command
Issue “Start Mission ” command
Send dummy password
Send dummy byte
Reset pulse
Presence pulse
49
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