参数资料
| 型号： | DS2502P+T&R |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 2/24页 |
| 文件大小： | 0K |
| 描述： | IC OTP 1KBIT 6TSOC |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 4,000 |
| 格式 - 存储器： | EPROMs |
| 存储器类型： | EPROM OTP |
| 存储容量： | 1K（1K x 1） |
| 接口： | 1 线 串行 |
| 工作温度： | -40°C ~ 85°C |
| 封装/外壳： | 6-LSOJ |
| 供应商设备封装： | 6-TSOC |
| 包装： | 带卷 (TR) |
ORDERING INFORMATION
PART TEMP RANGE
DS2502+ -40°C to +85°C
DS2502+T&R -40°C to +85°C
DS2502G+T&R -40°C to +85°C
DS2502P+ -40°C to +85°C
DS2502P+T&R -40°C to +85°C
DS2502R+T&R -40°C to +85°C
DS2502S+ -40°C to +85°C
DS2502S+T&R -40°C to +85°C
DS2502X1 -40°C to +85°C
+Denotes a lead(Pb)-free/RoHS-compliant package.
T&R = Tape and reel.
PIN-PACKAGE
3 TO-92 (straight leads)
3 TO-92 (formed leads, 2k pieces)
2 SFN (2.5k pieces)
6 TSOC
6 TSOC (4k pieces)
3 SOT-23 (3k pieces)
8 SO
8 SO (2.5k pieces)
2 Flip Chip (10k pieces)
DS2502
DESCRIPTION
The DS2502 1Kb Add-Only Memory identifies and stores relevant information about the product to
which it is associated. This lot- or product-specific information can be accessed with minimal interface-
for example, a single port pin of a microcontroller. The DS2502 consists of a factory-lasered registration
number that includes a unique 48-bit serial number, an 8-bit CRC, and an 8-bit Family Code (09h) plus
1Kb of EPROM which is user-programmable. The power to program and read the DS2502 is derived
entirely from the 1-Wire ? communication line.
Data is transferred serially via the 1-Wire protocol which requires only a single data lead and a ground
return. The entire device can be programmed and then write-protected if desired. Alternatively, the part
may be programmed multiple times with new data being appended to, but not overwriting, existing data
with each subsequent programming of the device. Note: Individual bits can be changed only from a
logical 1 to a logical 0, never from a logical 0 to a logical 1. A provision is also included for indicating
that a certain page or pages of data are no longer valid and have been replaced with new or updated data
that is now residing at an alternate page address. This page address redirection allows software to patch
data and enhance the flexibility of the device as a stand-alone database. The 48-bit serial number that is
factory-lasered into each DS2502 provides a guaranteed unique identity which allows for absolute
traceability. The familiar TO-92 or SOIC or TSOC packages provide a compact enclosure that allows
standard assembly equipment to handle the device easily for attachment to printed circuit boards or
wiring. Typical applications include storage of calibration constants, maintenance records, asset tracking,
product revision status, and access codes.
OVERVIEW
The block diagram in Figure 1 shows the relationships between the major control and memory sections of
the DS2502. The DS2502 has three main data components: 1) 64-bit lasered ROM, 2) 1024-bit EPROM,
and 3) EPROM Status Bytes. The device derives its power for read operations entirely from the 1-Wire
communication line by storing energy on an internal capacitor during periods of time when the signal line
is high and continues to operate off of this “parasite” power source during the low times of the 1-Wire
line until it returns high to replenish the parasite (capacitor) supply. During programming, 1-Wire
communication occurs at normal voltage levels and then is pulsed momentarily to the programming
voltage to cause the selected EPROM bits to be programmed. The 1-Wire line must be able to provide 12
volts and 10 milliamperes to adequately program the EPROM portions of the part. Whenever
programming voltages are present on the 1-Wire line a special high voltage detect circuit within the
DS2502 generates an internal logic signal to indicate this condition. The hierarchical structure of the 1-
Wire protocol is shown in Figure 2. The bus master must first provide one of the six ROM Function
Commands, 1) Read ROM, 2) Match ROM, 3) Search ROM, 4) Skip ROM. These commands operate on
the 64-bit lasered ROM portion of each device and can singulate a specific device if many are present on
1-Wire is a registered trademark of Maxim Integrated Products, Inc.
相关PDF资料 |
PDF描述 |
|---|---|
| DS2502+T&R | IC OTP 1KBIT TO92-3 |
| 345-026-541-202 | CARDEDGE 26POS DUAL .100 GREEN |
| AYF534765 | CONN SOCKET FPC 0.5MM 47POS SMD |
| AYF534665 | CONN SOCKET FPC 0.5MM 46POS SMD |
| FT24C256A-UDR-B | IC EEPROM 256KBIT 1MHZ 8DIP |
相关代理商/技术参数 |
参数描述 |
|---|---|
| DS2502PU-112F+T | 功能描述:可擦除可编程ROM RoHS:否 制造商:Maxim Integrated 类型: 存储容量:1024 bit 组织:1 K x 1 接口类型: 工作电流:5 uA 编程电压: 工作电源电压:2.8 V to 6 V 最大工作温度:+ 85 C 安装风格:Through Hole 封装 / 箱体:TO-92 |
| DS2502PU-1176+ | 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述: |
| DS2502PU-1186+T | 制造商:Maxim Integrated Products 功能描述:DS2502 1KB ADD-ONLY MEMORY - Tape and Reel |
| DS2502P-UNW | 制造商:DALLAS 制造商全称:Dallas Semiconductor 功能描述:UniqueWare Add-Only Memory |
| DS2502P-UNW-1149/T&R | 功能描述:可擦除可编程ROM RoHS:否 制造商:Maxim Integrated 类型: 存储容量:1024 bit 组织:1 K x 1 接口类型: 工作电流:5 uA 编程电压: 工作电源电压:2.8 V to 6 V 最大工作温度:+ 85 C 安装风格:Through Hole 封装 / 箱体:TO-92 |
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