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| 型号： | SC18IM700IPW |
| 厂商： | NXP Semiconductors N.V. |
| 元件分类： | 连接器件 |
| 英文描述： | Master I?C-bus controller with UART interface |
| 封装： | SC18IM700IPW<SOT403-1 (TSSOP16)|<<http://www.nxp.com/packages/SOT403-1.html<1<Always Pb-free,;SC18IM700IPW<SOT403-1 (TSSOP16)|<<http://www.nxp.com/packages/SOT403-1.html& |
| 文件页数： | 10/22页 |
| 文件大小： | 118K |
| 代理商： | SC18IM700IPW |
SC18IM700_2
NXP B.V. 2007. All rights reserved.
Product data sheet
Rev. 02 — 10 August 2007
10 of 22
NXP Semiconductors
SC18IM700
Master I
2
C-bus controller with UART interface
9.2 Register descriptions
9.2.1
Baud Rate Generator (BRG)
The baud rate generator is an 8-bit counter that generates the data rate for the transmitter
and the receiver. The rate is programmed through the BRG register and the baud rate can
be calculated as follows:
Remark:
To calculate the baud rate the values in the BRG registers must first be
converted from hex to decimal.
Remark:
For the new baud rate to take effect, both BRG0 and BRG1 must be written in
sequence (BRG0, BRG1) with new values. The new baud rate will be in effect once BRG1
is written.
9.2.2
Programmable port configuration (PortConf1 and PortConf2)
GPIO port 0 to port 7 may be configured by software to one of four types. These are:
quasi-bidirectional, push-pull, open-drain, and input-only. Two bits are used to select the
desired configuration for each port pin. PortConf1 is used to select the configuration for
GPIO3 to GPIO0, and PortConf2 is used to select the configuration for GPIO7 to GPIO4.
A port pin has Schmitt triggered input that also has a glitch suppression circuit.
9.2.2.1
Quasi-bidirectional output configuration
Quasi-bidirectional output type can be used as both an input and output without the need
to reconfigure the port. This is possible because when the port outputs a logic HIGH, it is
weakly driven, allowing an external device to pull the pin LOW. When the pin is driven
LOW, it is driven strongly and able to sink a fairly large current. These features are
somewhat similar to an open-drain output except that there are three pull-up transistors in
the quasi-bidirectional output that serve different purposes.
The SC18IM700 is a 3 V device, but the pins are 5 V tolerant. In quasi-bidirectional mode,
if a user applies 5 V on the pin, there will be a current flowing from the pin to V
DD
, causing
extra power consumption. Therefore, applying 5 V in quasi-bidirectional mode is
discouraged.
A quasi-bidirectional port pin has a Schmitt triggered input that also has a glitch
suppression circuit.
Baud rate
BRG1 BRG0
6
16
)
+
-----------------------------------------------------
=
Table 5.
GPIOx.1
0
0
1
1
Port configurations
GPIOx.0
0
1
0
1
Port configuration
quasi-bidirectional output configuration
input-only configuration
push-pull output configuration
open-drain output configuration
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相关代理商/技术参数 |
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|---|---|
| SC18IM700IPW,112 | 功能描述:UART 接口集成电路 CTRL I2C W/UART 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 |
| SC18IM700IPW,128 | 功能描述:UART 接口集成电路 UART-MASTER I2C 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 |
| SC18IM700IPW/S8HP | 功能描述:IC CTRL I2CW/UART 16TSSOP 制造商:nxp usa inc. 系列:- 零件状态:在售 协议:I2C 功能:控制器 接口:UART 标准:- 电压 - 电源:2.4 V ~ 3.6 V 电流 - 电源:9mA 工作温度:-40°C ~ 85°C 封装/外壳:16-TSSOP（0.173"，4.40mm 宽） 供应商器件封装:16-TSSOP 标准包装:1 |
| SC18IM700IPW112 | 制造商:NXP Semiconductors 功能描述:IC I2C BUS TO UART INTERFACE TSSOP-16 制造商:NXP Semiconductors 功能描述:IC I2C BUS-UART INTERFACE 16TSSOP |
| SC18IM700IPW-F | 功能描述:UART 接口集成电路 UART-MASTER I2C BRIDGE W/GPIO 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 |
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