参数资料
型号: MAX3140CEI+
厂商: Maxim Integrated Products
文件页数: 8/36页
文件大小: 0K
描述: IC UART SPI MICRWR W/TXRX 28QSOP
产品培训模块: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装: 50
特点: 收发器
FIFO's: 8 字节
规程: RS232,RS485
电源电压: 4.75 V ~ 5.25 V
带IrDA 编码器/解码器:
带故障启动位检测功能:
带CMOS:
安装类型: 表面贴装
封装/外壳: 28-QSOP
供应商设备封装: 28-QSOP
包装: 管件
产品目录页面: 1404 (CN2011-ZH PDF)
MAX3140
SCLK’s rising edge. DOUT (MISO) is read into the P
on SCLK’s rising edge. The first bit (bit 15) of DOUT
transitions on CS’s falling edge, and bits 14–0 transition
on SCLK’s falling edge. Figure 12 shows the detailed
serial timing specifications for the synchronous SPI
port.
Only 16-bit words are expected. If CS goes high in the
middle of a transmission (any time before the 16th bit),
the sequence is aborted (i.e., data does not get written
to individual registers). Most operations, such as the
clearing of internal registers, are executed only on CS’s
rising edge. Every time CS goes low, a new 16-bit
stream is expected. Figure 13 shows an example of
using the WRITE CONFIGURATION register.
Table 1 describes the bits located in the WRITE CON-
FIGURATION, READ CONFIGURATION, WRITE DATA,
and READ DATA registers. This table also describes
whether the bit is a read or write bit and what the
power-on reset states (POR) of the bits are. Figure 14
shows an example of parity and word length control.
SPI/MICROWIRE-Compatible UART with Integrated
True Fail-Safe RS-485/RS-422 Transceivers
16
______________________________________________________________________________________
CS
SCLK
DIN
DOUT
tCSO
tCL
tDS
tDH
tDV
tCH
tDO
tTR
tCSH
tCS1
tCSS
Figure 12. Detailed Serial Timing Specifications for the Synchronous Port
1
CS
SCLK
DIN
DOUT
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
DATA
UPDATED
1
FEN
SHDN
TM
RM
PM
RAM
IR
ST
PE
L
B3
B2
B1
B0
RT
0
00
0
Figure 13. SPI Interface (Write Configuration)
IDLE
SECOND STOP BIT IS OMITTED IF ST = 0.
PE = 1, L = 1
TIME
D0
START
D1
D2
D3
D4
D5
D6
Pt
STOP
IDLE
PE = 1, L = 0
D0
START
D1
D2
D3
D4
D5
D6
D7
Pt
STOP
IDLE
PE = 0, L = 1
D0
START
D1
D2
D3
D4
D5
D6
STOP
IDLE
PE = 0, L = 0
D0
START
D1
D2
D3
D4
D5
D6
D7
STOP
IDLE
Figure 14. Parity and Word Length Control
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MAX3140CEI+ 功能描述:UART 接口集成电路 SPI/uWire Compatible 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
MAX3140CEI+T 功能描述:UART 接口集成电路 SPI/uWire Compatible 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
MAX3140CEI-T 功能描述:UART 接口集成电路 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
MAX3140EEI 功能描述:UART 接口集成电路 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
MAX3140EEI+ 功能描述:UART 接口集成电路 SPI/uWire Compatible 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