參數(shù)資料
型號(hào): DS1963
廠商: Maxim Integrated Products, Inc.
英文描述: 4K-Bit Monetary iButton(4K位貨幣按鈕)
中文描述: 4K的位貨幣iButton的(4K的位貨幣按鈕)
文件頁(yè)數(shù): 12/22頁(yè)
文件大?。?/td> 147K
代理商: DS1963
DS1962/DS1963
020698 12/22
MEMORY FUNCTION EXAMPLE (DS1962)
Update purse file in page 1: Read Memory + Counter, Write Scratchpad, Copy Scratchpad.
MASTER MODE
DATA (LSB FIRST)
COMMENTS
TX
Reset
Reset pulse (480–960
μ
s)
RX
Presence
Presence pulse
TX
CCh
Issue “skip ROM” command
TX
A5h
Issue “read memory + counter” command
TX
20h
TA1, beginning offset=20h
TX
00h
TA2, address=0020h
RX
<32 data bytes>
Read 32 bytes of data
RX
<4 data bytes>
Read Write Cycle Counter of page 1
RX
<4 data bytes>
Read Tamper Detect Bytes of device
RX
<2 data bytes>
Read (inverted) CRC16
TX
Reset
Reset pulse
RX
Presence
Presence pulse
TX
CCh
Issue “skip ROM” command
TX
0Fh
Issue “write scratchpad” command
TX
20h
TA1, beginning offset=20h
TX
00h
TA2, address=0020h
TX
<32 data bytes>
Write 32 bytes of data to scratchpad
RX
<2 data bytes>
Read (inverted) CRC16
TX
Reset
Reset pulse
RX
Presence
Presence pulse
TX
CCh
Issue “skip ROM” command
TX
5Ah
Issue “copy scratchpad” command
TX
20h
TA1
TX
00h
TA2
AUTHORIZATION CODE
TX
1Fh
E/S
RX
<1 data byte>
Read Copy Scratchpad response
TX
Reset
Reset pulse
RX
Presence
Presence pulse, done
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