参数资料
型号: DS28E04S-100+T
厂商: Maxim Integrated Products
文件页数: 5/37页
文件大小: 0K
描述: IC EEPROM 4KBIT 16SOIC
产品培训模块: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装: 2,500
格式 - 存储器: EEPROMs - 串行
存储器类型: EEPROM
存储容量: 4K (256 x 16)
接口: 1 线 串行
工作温度: -40°C ~ 85°C
封装/外壳: 16-SOIC(0.154",3.90mm 宽)
供应商设备封装: 16-SOIC
包装: 带卷 (TR)
DS28E04-100: 4096-Bit 1-Wire Addressable EEPROM with PIO
OVERVIEW
The block diagram in Figure 1 shows the relationships between the major control and memory sections of the
DS28E04-100. The DS28E04-100 has five main data components: 1) 64-bit device ID number, 2) 32-byte
scratchpad, 3) sixteen 32-byte pages of EEPROM, 4) Special Function Register, and 5) PIO Control Registers. The
hierarchical structure of the 1-Wire protocol is shown in Figure 2. The bus master must first provide one of the eight
ROM Function Commands, 1) Read ROM, 2) Match ROM, 3) Search ROM, 4) Conditional Search ROM, 5) Skip
ROM, 6) Resume, 7) Overdrive-Skip ROM or 8) Overdrive-Match ROM. Upon completion of an Overdrive ROM
command byte executed at standard speed, the device enters Overdrive mode where all subsequent
communication occurs at a higher speed. The protocol required for these ROM function commands is described in
Figure 14. After a ROM function command is successfully executed, the memory/control functions become
accessible and the master may provide any one of the nine Memory/Control Function commands. The protocol for
these commands is described in Figure 9. All data is read and written least significant bit first.
Figure 1. Block Diagram
1-Wire Network
Internal V DD
V CC
IO
1-Wire
Function Control
Device ID
Number Register
A0
Memory
Function
Control Unit
P0
P1
POL
PIO
Control Registers
CRC16
Generator
Data Memory
16 Pages of
32 Bytes Each
Special Function
Registers
5 of 37
32-Byte
Scratchpad
Internal V DD
A6
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