参数资料
型号: ST16C650AIJ44-F
厂商: Exar Corporation
文件页数: 14/50页
文件大小: 0K
描述: IC UART FIFO 32B 44PLCC
标准包装: 27
特点: *
通道数: 1,UART
FIFO's: 32 字节
规程: 打印机,RS232,RS422,RS485
电源电压: 2.9 V ~ 5.5 V
带并行端口:
带IrDA 编码器/解码器:
带故障启动位检测功能:
带调制解调器控制功能:
带CMOS:
安装类型: 表面贴装
封装/外壳: 44-LCC(J 形引线)
供应商设备封装: 44-PLCC(16.59x16.59)
包装: 管件
ST16C650A
21
REV. 5.0.3
2.90V TO 5.5V UART WITH 32-BYTE FIFO
2.18
Internal Loopback
The 650A UART provides an internal loopback capability for system diagnostic purposes. The internal
loopback mode is enabled by setting MCR register bit-4 to logic 1. All regular UART functions operate normally.
Figure 14 shows how the modem port signals are re-configured. Transmit data from the transmit shift register
output is internally routed to the receive shift register input allowing the system to receive the same data that it
was sending. The TX pin is held at logic 1 or mark condition while RTS# and DTR# are de-asserted, and
CTS#, DSR# CD# and RI# inputs are ignored. Caution: the RX input must be held to a logic 1 during loopback
test else upon exiting the loopback test the UART may detect and report a false “break” signal. Also, Auto
RTS/CTS is not supported during internal loopback.
FIGURE 14. INTERNAL LOOP BACK
TX
RX
M
odem
/
G
eneral
Purpos
e
C
o
ntrol
Logic
Intern
al
Data
B
u
s
Lin
es
and
C
o
n
tr
o
lSignals
RTS#
MCR bit-4=1
VCC
Transmit Shift Register
(THR/FIFO)
Receive Shift Register
(RHR/FIFO)
CTS#
DTR#
DSR#
RI#
CD#
OP1#
OP2#
RTS#
CTS#
DTR#
DSR#
RI#
CD#
VCC
OP2#
VCC
OP1#
相关PDF资料
PDF描述
ST16C654DIQ64-F IC UART FIFO 64B QUAD 64LQFP
ST78C34CJ44-F IC UART FIFO 83B 44PLCC
ST78C36ACJ44-F IC UART FIFO 16B 44PLCC
SW06GSZ-REEL IC SWITCH QUAD SPST 16SOIC
SX1501I087TRT IC GPIO EXPANDER I2C 4CH 20QFN
相关代理商/技术参数
参数描述
ST16C650AIP40 制造商:EXAR 制造商全称:EXAR 功能描述:2.90V TO 5.5V UART WITH 32-BYTE FIFO
ST16C650AIQ48 制造商:Rochester Electronics LLC 功能描述: 制造商:Exar Corporation 功能描述:UART, 48 Pin, Plastic, TQFP
ST16C650AIQ48-F 功能描述:UART 接口集成电路 UART W/32BYTEFIFO RoHS:否 制造商:Texas Instruments 通道数量:2 数据速率:3 Mbps 电源电压-最大:3.6 V 电源电压-最小:2.7 V 电源电流:20 mA 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:LQFP-48 封装:Reel
ST16C650AIQ48TR 制造商:Rochester Electronics LLC 功能描述: 制造商:Exar Corporation 功能描述:
ST16C650AIQ48TR-F 功能描述:UART 接口集成电路 UART W/32BYTEFIFO RoHS:否 制造商:Texas Instruments 通道数量:2 数据速率:3 Mbps 电源电压-最大:3.6 V 电源电压-最小:2.7 V 电源电流:20 mA 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:LQFP-48 封装:Reel