參數(shù)資料
型號(hào)： M44C890-H
廠商： TEMIC SEMICONDUCTORS
元件分類： 微控制器/微處理器
英文描述： Low-Current Microcontroller for Wireless Communication
中文描述： 4-BIT, EEPROM, MICROCONTROLLER, PDSO20
封裝： SSO-20
文件頁數(shù)： 43/63頁
文件大?。?/td> 503K
代理商： M44C890-H
M44C890
M44C090
Rev.A4, 14-Dec-01
43 (63)
(2)
(1)
(4)
(4)
(3)
(1)
Start
condition
Data
valid
Data
change
Data
valid
Stop
condition
13832
SC
SD
Figure 49. I
2
C bus protocol 1
Bus not busy (1)
Both data and clock lines remain HIGH.
Start data transfer (2)
A HIGH to LOW transition of the SD line while
the clock (SC) is HIGH defines a START
condition.
Stop data transfer (3)
A LOW to HIGH transition of the SD line while
the clock (SC) is HIGH defines a STOP condition.
Data valid (4)
The state of the data line represents valid data
when, after START condition, the data line is
stable for the duration of the HIGH period of the
clock signal.
Acknowledge
All address and data words are serially transmitted
to and from device in eight
–
bit words. The
receiving device returns a zero on the data line
during the ninth clock cycle to acknowledge word
receipt.
13833
SC
SD
Start
1
n
8
9
1st Bit
8th Bit
ACK
Stop
Figure 50. I
2
C bus protocol 2
SSI Interrupt
The SSI interrupt INT3 can be generated either by an SSI
buffer register status (i.e., transmit buffer empty or
receive buffer full) at the end of SSI data telegram or on
the falling edge of the SC/SD pins on Port 4 (see P4CR).
SSI interrupt selection is performed by the
I
nterrupt
F
unctio
N
control bit (IFN). The SSI interrupt is usually
used to synchronize the software control of the SSI and
inform the controller of the present SSI status. The Port
4 interrupts can be used together with the SSI or, if the SSI
itself is not required, as additional external interrupt
sources. In either case this interrupt is capable of waking
the controller out of sleep mode.
To enable and select the SSI relevant interrupts use the
SSI interrupt mask (SIM) and the Interrupt Function
(IFN) while the Port 4 interrupts are enabled by setting
appropriate control bits in P4CR register.
Modulation
If the shift register is used together with Timer 2 for
modulation purposes, the 8-bit synchronous mode must
be used. In this case, the unused Port 4 pins can be used
as conventional bidirectional ports.
The modulation stage, if enabled, operates as soon as the
SSI is activated (SIR=0) and ceases when deactivated
(SIR=1).
相關(guān)PDF資料
PDF描述
M4N25 6-Pin DIP Optoisolators Transistor Output
M4N26 6-Pin DIP Optoisolators Transistor Output
M4N37 Header, Vertical Friction Lock; No. of Contacts:3; Pitch Spacing:2.54mm; No. of Rows:1; Gender:Header; Series:6410; Body Material:PA Polyamide (Nylon); Current Rating:4A; Voltage Rating:250V RoHS Compliant: Yes
M50195P DIGITAL ECHO
M50734FP-10 8-BIT CMOS MICROCOMPUTER
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
M44S05K4F1 功能描述:汽車連接器 MX44 Terminals RoHS:否 制造商:Amphenol SINE Systems 產(chǎn)品:Contacts 系列:ATP 位置數(shù)量: 型式:Female 安裝風(fēng)格: 端接類型: 觸點(diǎn)電鍍:Nickel
M44T332538880MHZ 制造商:MEC 功能描述:
M44T3338880MHZ 制造商:MEC 功能描述:
M450 PSA2MCS100- 制造商:TR FASTENINGS 功能描述:SCREW SLT PAN S/S A2 M4X50 制造商:TR FASTENINGS 功能描述:SCREW, SLT, PAN, S/S, A2, M4X50 制造商:TR FASTENINGS 功能描述:SCREW, SLT, PAN, S/S, A2, M4X50; Thread Size - Metric:M4; Screw Length:50mm; Fastener Material:Stainless Steel; Screw Head Style:Slotted Pan; SVHC:No SVHC (19-Dec-2012); Driver Type:Slotted; External Length / Height:50mm; ;RoHS Compliant: Yes
M450 PSSTMCZ100- 制造商:TR FASTENINGS 功能描述:SCREW SLT PAN STEEL BZP M4X50 制造商:TR FASTENINGS 功能描述:SCREW, SLT, PAN, STEEL, BZP, M4X50 制造商:TR FASTENERS 功能描述:SCREW, SLT, PAN, STEEL, BZP, M4X50, Thread Size - Imperial:-, Thread Size - Metr
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。

采購需求

(若只采購一條型號(hào)，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購

我的聯(lián)系方式

*
*
*