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參數(shù)資料
| 型號： | DS2432P |
| 廠商： | DALLAS SEMICONDUCTOR |
| 元件分類： | Programmable ROM |
| 英文描述： | 1K X 1 1-WIRE SERIAL EEPROM, PDSO6 |
| 封裝： | 0.150 INCH, TSOC-6 |
| 文件頁數(shù)： | 18/30頁 |
| 文件大小： | 165K |
| 代理商： | DS2432P |
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PRELIMINARY
DS2432
25 of 30
1-WIRE SIGNALING
The DS2432 requires strict protocols to ensure data integrity. The protocol consists of four types of sig-
naling on one line: Reset Sequence with Reset Pulse and Presence Pulse, Write 0, Write 1 and Read Data.
Except for the presence pulse the bus master initiates all these signals. The DS2432 can communicate at
two different speeds, regular speed and Overdrive Speed. If not explicitly set into the Overdrive mode,
the DS2432 will communicate at regular speed. While in Overdrive Mode the fast timing applies to all
waveforms.
The initialization sequence required to begin any communication with the DS2432 is shown in Figure 10.
A Reset Pulse followed by a Presence Pulse indicates the DS2432 is ready to send or receive data. The
bus master transmits (TX) a reset pulse (tRSTL, minimum 480 s at regular speed, 48 s at Overdrive
Speed). The bus master then releases the line and goes into receive mode (RX). The 1-Wire bus is pulled
to a high state via the pull-up resistor. After detecting the rising edge on the data pin, the DS2432 waits
(tPDH, 15-60 s at regular speed, 2-6 s at Overdrive speed) and then transmits the Presence Pulse (tPDL,
60-240 s at regular speed, 8-24 s at Overdrive Speed). A Reset Pulse of 480 s or longer will exit the
Overdrive Mode returning the device to regular speed. If the DS2432 is in Overdrive Mode and the Reset
Pulse is no longer than 80 s the device will remain in Overdrive Mode.
INITIALIZATION PROCEDURE “RESET AND PRESENCE PULSES” Figure 10
VPULLUP
VPULLUP MIN
VIH MIN
VIL MAX
0V
REGULAR SPEED
480 s
≤ t
RSTL <
∞*
480 s
≤ t
RSTH <
∞**
15
≤ t
PDH < 60 s
60 s
≤ t
PDL < 240
OVERDRIVE SPEED
48 s
≤ t
RSTL < 80 s
48 s
≤ t
RSTH <
∞ **
15
≤ t
PDH < 6 s
8 s
≤ t
PDL < 24
RESISTOR
MASTER
DS2432
tR
tRSTL
tPDL
tRSTH
tPDH
MASTER TX “RESET PULSE” MASTER RX “PRESENCE PULSE”
*
In order not to mask interrupt signaling by other devices on the 1-Wire bus, tRSTL + tR should
always be less than 960 s.
**
Includes recovery time
相關PDF資料 |
PDF描述 |
|---|---|
| DS2433 | 512 X 8 1-WIRE SERIAL EEPROM, PBCY3 |
| DS2433X | 4K X 1 1-WIRE SERIAL EEPROM, UUC2 |
| DS2433S | 512 X 8 1-WIRE SERIAL EEPROM, PDSO8 |
| DS2434S | SPECIALTY MEMORY CIRCUIT, PDSO16 |
| DS2434 | SPECIALTY MEMORY CIRCUIT, PBCY3 |
相關代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| DS2432P R | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:1Kb Protected 1-Wire EEPROM with SHA-1 Engine |
| DS2432P T | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:1Kb Protected 1-Wire EEPROM with SHA-1 Engine |
| DS2432P/T&R | 功能描述:電可擦除可編程只讀存儲器 RoHS:否 制造商:Atmel 存儲容量:2 Kbit 組織:256 B x 8 數(shù)據(jù)保留:100 yr 最大時鐘頻率:1000 KHz 最大工作電流:6 uA 工作電源電壓:1.7 V to 5.5 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:SOIC-8 |
| DS2432P+ | 制造商:Maxim Integrated Products 功能描述:EEPROM SERL-1WIRE 1KBIT 4PAGES X 256 3.3V/5V 6PIN TSOC - Rail/Tube 制造商:Maxim Integrated Products 功能描述:1-WIRE 1KB EE W/SHA-1 TSOC PBFREE 制造商:Maxim Integrated Products 功能描述:EEPROM 1KB 1-WIRE 6TSOC 制造商:Maxim Integrated Products 功能描述:EEPROM, 1KB, 1-WIRE, 6TSOC 制造商:Maxim Integrated Products 功能描述:OPTOCOUPLERS; Memory Size:1Kbit; Memory Configuration:256 x 4; Supply Voltage Min:2.8V; Supply Voltage Max:5.25V; Memory Case Style:TSOC; No. of Pins:6; IC Interface Type:Serial; Operating Temperature Min:-40C ;RoHS Compliant: Yes |
| DS2432P+R | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:1Kb Protected 1-Wire EEPROM with SHA-1 Engine |
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