參數(shù)資料
型號： 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
文件頁數(shù)： 30/120頁
文件大小： 1369K
代理商： 7643
Rev.1.00 Jul 30, 2003 page 30 of 119
7643 Group
UART
Twelve serial data transfer formats can be selected, and the trans-
fer formats used by a transmitter and receiver must be identical.
The transmit and receive shift registers each have a buffer, but the
two buffers have the same address in a memory. Since the shift
register cannot be written to or read from directly, transmit data is
written to the transmit buffer register, and receive data is read
from the receive buffer register.
The transmit buffer register can also hold the next data to be
transmitted, and the receive buffer register can hold a character
while the next character is being received.
The transfer speed (baud rate) is expression as follows:
Transfer speed (baud rate) = fi / {(n + 1)
16 }
n: The contents of UART baud rate generator
fi: Using UART clock prescaling select bits, select any one of
φ
,
φ
/8,
φ
/32,
φ
/256
OER
PER
FER
0034
16
0035
16
Receive buffer register 1
Receive buffer register 2
Receive shift register 1
Receive shift register 2
Address 0030
16
UART mode register
UART control register
Address 0033
16
Receive buffer full flag (RBF)
Receive buffer full interrupt request (URBF)
Receive summing error interrupt request (UES)
SPdetector
UART character length select bits
ST
detector
7 bits
8 bits
9 bits
P8
5
/U
RXD
P8
4
/UTXD
Prescaler
1/1
1/8
1/32
1/256
Baud rate generator
ST/SP/PA generator
Clock control circuit
1/16
P8
6
/CTS
RTS control register
P8
7
/RTS
Frequency division
ratio 1/(n+1)
Addresses 0036
16
Addresses 0031
16
Character length select bit
Transmit shift register 1
Transmit shift register 2
Transmit buffer register 1
Transmit buffer register 2
Transmit comple flag
(TCM)
Transmit interrupt source select bit
Transmit interrupt
request (UTX)
Transmit buffer empty
flag (TBE)
UART status register
Data bus
Data bus
φ
UART clock
prescaling
select bits
0034
16
0035
16
Address 0032
16
Fig. 24 UART block diagram
相關(guān)PDF資料
PDF描述
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765-11-20K Analog IC
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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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