- 您現(xiàn)在的位置：買(mǎi)賣(mài)IC網(wǎng) > PDF目錄373349 > S42WD61SBS (Electronic Theatre Controls, Inc.) Dual Voltage Supervisory Circuit With Watchdog Timer PDF資料下載
參數(shù)資料
| 型號(hào)： | S42WD61SBS |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | Dual Voltage Supervisory Circuit With Watchdog Timer |
| 中文描述： | 雙電壓監(jiān)控電路，帶有看門(mén)狗定時(shí)器 |
| 文件頁(yè)數(shù)： | 10/16頁(yè) |
| 文件大?。?/td> | 102K |
| 代理商： | S42WD61SBS |
第1頁(yè)第2頁(yè)第3頁(yè)第4頁(yè)第5頁(yè)第6頁(yè)第7頁(yè)第8頁(yè)第9頁(yè)當(dāng)前第10頁(yè)第11頁(yè)第12頁(yè)第13頁(yè)第14頁(yè)第15頁(yè)第16頁(yè)
10
S4242/S42WD42/S4261/S42WD61
2025 6.0 4/17/00
FIGURE 12. CURRENT ADDRESS BYTE READ MODE
FIGURE 11. ACKNOWLEDGE POLLING
Acknowledge Polling
When the S42xxx is performing an internal WRITE opera-
tion, it will ignore any new START conditions. Since the
device will only return an acknowledge after it accepts the
START, the part can be continuously queried until an
acknowledge is issued, indicating that the internal WRITE
cycle is complete.
To poll the device, give it a START condition, followed by
a slave address for a WRITE operation (See Figure 9).
READ OPERATIONS
Read operations are initiated with the R/W bit of the
identification field set to
“
1.
”
There are four different read
options:
1.
2.
3.
4.
Current Address Byte Read
Random Address Byte Read
Current Address Sequential Read
Random Address Sequential Read
Current Address Byte Read
The S42xxx contains an internal address counter which
maintains the address of the last word accessed,
incremented by one. If the last address accessed (either
a read or write) was to address location n, the next read
operation would access data from address location n+1
and increment the current address pointer. When the
S42xxx receives the slave address field with the R/W bit
set to
“
1,
”
it issues an acknowledge and transmits the 8-
bit word stored at address location n+1.
The current address byte read operation only accesses a
single byte of data. The master does not acknowledge the
transfer, but does generate a stop condition. At this point,
the S42xxx discontinues data transmission. See
Figure 12 for the address acknowledge and data transfer
sequence.
Issue Start
Internal WRITE Cycle
In Progress;
Begin ACK Polling
Issue Slave
Address and
R/W = 0
ACK
Returned
operation a
WRITE
Issue Byte
Address
Proceed with
WRITE
Issue Stop
Await Next
Command
Issue Stop
No
No
Yes (Internal WRITE Cycle is completed)
Yes
2025 ILL11.0
S
T
A
R
T
S
T
O
P
Slave Address
Device
Type
Address
Read/Write
1= Read
A10,A9,A8
SDA Bus Activity
D
7
D
6
D
5
D
4
D
3
D
2
D
1
D
0
Master sends Read
request to Slave
Slave sends
Data to Master
Slave Transmitter
to
Master Receiver
Master Transmitter
to
Slave Receiver
1
1
1
0
0
1
Lack of ACK (low)
from Master
determines last
data byte to be read
1
Shading Denotes
42xxx
SDA Output Active
A
9
A
10
R
W
A
C
K
A
8
Data Byte
2025 ILL12.1
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| S42WD61SP | Dual Voltage Supervisory Circuit With Watchdog Timer |
| S42WD61SS | Dual Voltage Supervisory Circuit With Watchdog Timer |
| S42WD42 | Dual Voltage Supervisory Circuit With Watchdog Timer |
| S42WD42P2.7P | Dual Voltage Supervisory Circuit With Watchdog Timer |
| S42WD42P2.7S | SWITCH DIP DPST 4POS SMT |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| S42WD61SP | 制造商:未知廠家 制造商全稱(chēng):未知廠家 功能描述:Dual Voltage Supervisory Circuit With Watchdog Timer |
| S42WD61SS | 制造商:未知廠家 制造商全稱(chēng):未知廠家 功能描述:Dual Voltage Supervisory Circuit With Watchdog Timer |
| S43 | 功能描述:撥動(dòng)開(kāi)關(guān) 4PDT ON-OFF-ON SOLDER LUG RoHS:否 制造商:C&K Components 觸點(diǎn)形式:DPDT 開(kāi)關(guān)功能:ON - ON - ON 電流額定值: 電壓額定值 AC:20 V 電壓額定值 DC:20 V 功率額定值:0.4 VA 端接類(lèi)型:V-Bracket 安裝風(fēng)格: 端子密封:Epoxy 觸點(diǎn)電鍍:Gold 照明:Not Illuminated |
| S-43 | 制造商:Nihon Kaiheiki Ind Co Ltd 功能描述:30V 50000 Silver 70 -10 36.5mm 34.2mm 60.3mm |
| S43.11A | 功能描述:安裝硬件 PLUGM,63A,3P/4W,4h/125V;YEL.,IP44,CABLE GLAND,UL/CSA RoHS:否 制造商:Harwin 類(lèi)型:SMT Cable Clip 材料:Phosphor Bronze 安裝孔大小: 長(zhǎng)度:5 mm 外徑: 內(nèi)徑: 厚度: 電鍍:Tin 螺紋大小: |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。