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參數(shù)資料
| 型號(hào)： | 7643 |
| 英文描述： | IrDA. protocol handler plus endec for DCE Apps, -40C to +85C, 18-SOIC 300mil, TUBE |
| 中文描述： | 7643Group數(shù)據(jù)表數(shù)據(jù)表1369K/JUL.30.03 |
| 文件頁(yè)數(shù)： | 32/120頁(yè) |
| 文件大?。?/td> | 1369K |
| 代理商： | 7643 |
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Rev.1.00 Jul 30, 2003 page 32 of 119
7643 Group
UTXD output (P8
4
/UTXD)
D
0
D
1
SP
ST
D
2
D
3
D
4
D
5
D
6
D
7
P
SP
Transfer clock
Tranmit enable bit
Transmit buffer
empty flag
Transmit complete flag
D
0
D
1
D
2
D
3
D
4
D
5
D
6
D
7
ST
P
D
0
D
1
ST
Data set into UART transmit buffer register 1
Data transferring from UART transmit
buffer register 1 to Transmit shift register 1
This timing applies to the conditions:
Character length = 8 bits
Parity enabled
1 stop bit
RTS (Request-to-Send) Function
As a receiver, the UART can be configured to generate the Re-
quest-to-Send (RTS) handshaking signal. This is enabled by
setting the RTS Function Enable Bit (bit 6 of UCON) to “1”.
When reception is enabled, that is the Receive Enable Bit is “1”,
the RTS pin goes “L” to inform a transmitter that reception is pos-
sible. The RTS pin goes “H” at reception starting and does “L” at
receiving of the last bit.
The delay time from the reception of the last stop bit to the asser-
tion of RTS is selectable using the RTS Assertion Delay Count
Select Bits.
BRG count source
D
0
URXD (P8
5
/URXD)
ST
SP
D
1
D
7
RTS pin (P8
7
/RTS)
Receive enable bit
Receive buffer
empty flag
Transfer clock
Transfer clock generated at falling edge
of start bit and receive started
Receive data latched
Data transferring from UART receive register 1
to Receive buffer register 1 (
Note
)
Note:
When no RTS assertion delay, the RTS pin goes “L”.
The RTS assertion delay counts are selected by bits 4 to 7 of UART RTS control register.
This timing applies to the conditions:
Character length = 8 bits
Parity enabled
1 stop bit
Fig. 26 UART transmit timing (CTS function disbled)
When the Receive Enable Bit is set to “0” or the Receive initializa-
tion bit is set to “1”, the RTS pin goes “H”. Even when the Receive
Enable Bit is set to “1”, the RTS pin goes “H” if detecting an invalid
start bit.
Figure 27 shows the UART receive timing.
Fig. 27 UART receiving timing (RTS function enabled)
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| 765-11-(SERIES) | Analog IC |
| 765-11-20K | Analog IC |
| 765-11-25A | Analog IC |
| 765-11E | 8 BIT INPUT/OUTPUT EXPANDER, I2C INTERFACE, -40C to +125C, 20-QFN, TUBE |
| 765-11R | 8-bit I/O Expander with I2C Interface., -40C to +125C, 18-SOIC 300mil, TUBE |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 764-3"x36yd-Red | 功能描述:膠帶 764 RED 3X36 YD BULK RoHS:否 制造商:3M Electronic Specialty 產(chǎn)品:Tapes 類型:Shielding 描述/功能:EMI/RFI Foil Shielding Tape 顏色: 材料:Copper Foil 寬度:1 in x 18 yds |
| 764-3"x36yd-White | 功能描述:膠帶 WHITE 3X36YD BULK RoHS:否 制造商:3M Electronic Specialty 產(chǎn)品:Tapes 類型:Shielding 描述/功能:EMI/RFI Foil Shielding Tape 顏色: 材料:Copper Foil 寬度:1 in x 18 yds |
| 764-3"x36yd-Yellow | 功能描述:膠帶 764 YELLOW 3X36 YD BULK RoHS:否 制造商:3M Electronic Specialty 產(chǎn)品:Tapes 類型:Shielding 描述/功能:EMI/RFI Foil Shielding Tape 顏色: 材料:Copper Foil 寬度:1 in x 18 yds |
| 7643_06 | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:8-BIT SINGLE-CHIP MICROCOMPUTER |
| 76430 | 制造商:Brady Corporation 功能描述:TAPE, BARRICADE, BLACK/PHOSPHORESCENT, 2INX5YD; Tape Type:Safety, Hazard Warning; Tape Backing Material:Polyester Film; Tape Width - Metric:50.8mm; Tape Width - Imperial:2"; Tape Length - Metric:4.572m; Tape Length - Imperial:5yard ;RoHS Compliant: NA |
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