参数资料
型号: XE8801AMI000WP
厂商: Semtech
文件页数: 102/135页
文件大小: 0K
描述: SENSING MACHINE WITH 16 + 10 BIT
标准包装: 558
系列: XE880x
应用: 感测机
核心处理器: Coolrisc816?
程序存储器类型: 闪存(22 kB)
控制器系列: XE8000
RAM 容量: 512 x 8
接口: UART,USRT
输入/输出数: 24
电源电压: 2.4 V ~ 5.5 V
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 模具
包装: 托盘
配用: XE8000MP-ND - PROG BOARD AND PROSTART2 CARD
其它名称: Q2722595
Semtech 2005
www.semtech.com
12-6
XE8801A – SX8801R
Each bit can be set individually for pull-up or not using register RegPBPullup. Input is pulled up when its
corresponding bit in this register is set to 1. Default status after (resetpconf) is 0, which means without pull up. To
limit power consumption, pull-up resistors are only enabled when the associated pin is either a digital input or an N-
channel open-drain output with the pad set to 1. In the other cases (push-pull output or open-drain output driven
low), the pull up resistors are disabled independent of the value in RegPBPullup.
After power-on reset, the Port B is configured as an input port without pull-up.
The input buffer is always active, except in analog mode. This means that the Port B input should be a valid digital
value at all times unless the pin is set in analog mode. Violating this rule may lead to high power consumption.
12.7.2
Port B digital function specification
Sym
description
min
typ
max
unit
Comments
VINH
Input high voltage
0.7*VBAT
VBAT
V
VBAT
≥2.4V
VINL
Input low voltage
VSS
0.2*VBAT
V
VBAT
≥2.4V
VOH
Output high voltage
VBAT-0.4
VBAT
V
VBAT=1.2V, IOH =0.3mA
VBAT=2.4V, IOH =5.0mA
VBAT=4.5V, IOH =8.0mA
VOL
Output low voltage
VSS
VSS+0.4
V
VBAT=1.2V, IOL =0.3mA
VBAT=2.4V, IOL
=12.0mA
VBAT=4.5V, IOL
=15.0mA
RPU
Pull-up resistance
20
50
80
k
Cin
Input capacitance
3.5
pF
Note 1
Note 1: this value is indicative only since it depends on the package.
Not
Recommended
for
New
Designs
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