參數(shù)資料
型號(hào)： DS1986-F5
廠商： DALLAS SEMICONDUCTOR
元件分類(lèi)： Programmable ROM
英文描述： 64K X 1 OTPROM, MADB2
封裝： MICROCAN-2
文件頁(yè)數(shù)： 25/27頁(yè)
文件大小： 548K
代理商： DS1986-F5
DS1986
7 of 27
DS1986 MEMORY MAP Figure 4
REDIRECTION
BYTES
BIT MAP OF
USED PAGES
WRITE-PROTECT BITS
REDIRECTION BYTES
WRITE-PROTECT BITS
DATA MEMORY
STATUS MEMORY MAP
8 BYTES
WRITE-PROTECT BITS
DATA MEMORY
WRITE-PROTECT BITS
OF REDIRECTION BYTES
BIT MAP OF
USED PAGES
RESERVED FOR
FUTURE EXTENSIONS
REDIRECTION
BYTES
MEMORY FUNCTION COMMANDS
The “Memory Function Flow Chart” (Figure 5) describes the protocols necessary for accessing the
various data fields within the DS1986. The Memory Function Control section, 8-bit scratchpad, and the
Program Voltage Detect circuit combine to interpret the commands issued by the bus master and create
the correct control signals within the device. A three-byte protocol is issued by the bus master. It is
comprised of a command byte to determine the type of operation and two address bytes to determine the
specific starting byte location within a data field. The command byte indicates if the device is to be read
or written. Writing data involves not only issuing the correct command sequence but also providing a 12-
8-BIT
SCRATCHPAD
32-BYTE FINAL STORAGE EPROM
0000H
0020H
0040H
1FE0H
64K BIT
EPROM
325 BYTES
STATUS MEMORY
PAGE 0
PAGE 1
PAGE 255
44 PAGES
OF
8 BYTES
EACH
000H
01FH
020H
03FH
040H
05FH
060H
OFFH
100H
1FFH
BIT 0 OF ADDRESS 000H=WRITE-
PROTECT OF PAGE 0, ETC.
ADDRESS 100H=PAGE ADDRESS
REDIRECTION BYTE FOR
PAGE 0, ETC.
STARTING
ADDRESS
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
DS1986-F5# 功能描述:iButton RoHS:否 存儲(chǔ)類(lèi)型:SRAM 存儲(chǔ)容量:512 B 組織: 工作電源電壓:3 V to 5.25 V 接口類(lèi)型:1-Wire 最大工作溫度:+ 85 C 尺寸:17.35 mm x 5.89 mm 封裝 / 箱體:F5 MicroCan 制造商:Maxim Integrated
DS1986-F5+ 功能描述:iButton RoHS:否 存儲(chǔ)類(lèi)型:SRAM 存儲(chǔ)容量:512 B 組織: 工作電源電壓:3 V to 5.25 V 接口類(lèi)型:1-Wire 最大工作溫度:+ 85 C 尺寸:17.35 mm x 5.89 mm 封裝 / 箱體:F5 MicroCan 制造商:Maxim Integrated
DS1986U 制造商:未知廠家 制造商全稱:未知廠家 功能描述:UniqueWare iButton
DS1990 制造商:DALLAS 制造商全稱:Dallas Semiconductor 功能描述:Serial Number iButton
DS1990A 制造商:DALLAS 制造商全稱:Dallas Semiconductor 功能描述:Serial Number iButton
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