參數(shù)資料
型號(hào): XR88C681CP/40-F
廠商: Exar Corporation
文件頁數(shù): 49/101頁
文件大?。?/td> 0K
描述: IC UART CMOS DUAL 40PDIP
標(biāo)準(zhǔn)包裝: 9
特點(diǎn): *
通道數(shù): 2,DUART
FIFO's: 1 字節(jié),3 字節(jié)
電源電壓: 4.75 V ~ 5.25 V
帶并行端口:
帶CMOS:
安裝類型: 通孔
封裝/外殼: 40-DIP(0.600",15.24mm)
供應(yīng)商設(shè)備封裝: 40-PDIP
包裝: 管件
其它名稱: 1016-1328-5
XR88C681
51
Rev. 2.11
Preset Registers
(CTUR, CTLR)
Counter/
Timer
32:1
MUX
TxCA
32:1
MUX
RxCA
32:1
MUX
TxCB
32:1
MUX
RxCB
IP2
(RXCB)
IP5
(TXCB)
IP4
(RXCA)
IP3
(TXCA)
IP2
Divide by 16
TXCA
TXCB
ACR[4-6]
Bit Rate
Generator
ACR[7]
Oscillator
Circuit
X1/CLK
X2
Divide by 16
Figure 24. Block Diagram of DUART Timing Control Block
Each element of the Timing Control Block is discussed
here:
D.1 Oscillator Circuit:
A crystal oscillator is typically connected externally
across the X1/CLK and X2 pins. The Oscillator Circuit
(within the chip) functions as the load for the resonant
(crystal) oscillator, and buffers the resulting oscillating
signal, for use by the Bit Rate Generator, and
Counter/Timer. A crystal or TTL signal frequency of
between 2 MHz and 4 MHz is required for proper
operation of the DUART. However, a crystal or TTL signal
frequency of 3.6864 MHz is required for the generation of
standard bit rates by the Bit Rate Generator (See
Table 18).
Figure 25 presents a recommended
schematic for the XTAL Oscillator circuitry.
相關(guān)PDF資料
PDF描述
AT89C51RB2-RLRIM IC MCU FLASH 8051 16K 5V 44-VQFP
XR16V2550IM-F IC UART FIFO 16B 48TQFP
MAX7311AWG+T IC I/O EXPANDER I2C 16B 24SOIC
XR16L2750CM-F IC UART FIFO 64B DUAL 48TQFP
XR20M1172IL32-F IC UART FIFO I2C/SPI 64B 32QFN
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
XR88C681J 制造商:Exar Corporation 功能描述:
XR88C681J-F 功能描述:UART 接口集成電路 0.5V-2V UART temp -45 to 85C RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 數(shù)據(jù)速率:3 Mbps 電源電壓-最大:3.6 V 電源電壓-最小:2.7 V 電源電流:20 mA 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:LQFP-48 封裝:Reel
XR88C681JTR-F 功能描述:UART 接口集成電路 Dual Channel UART RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 數(shù)據(jù)速率:3 Mbps 電源電壓-最大:3.6 V 電源電壓-最小:2.7 V 電源電流:20 mA 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:LQFP-48 封裝:Reel
XR88C681MN-S0968 制造商:Exar Corporation 功能描述:
XR88C681N/40 制造商:EXAR 制造商全稱:EXAR 功能描述:CMOS DUAL CHANNEL UART (DUART)