仅对英特尔可见 — GUID: bcq1487191162213
Ixiasoft
内部弱上拉和弱下拉电阻
符号 | 说明 | 条件 | Min | 典型值 | Max | 单位 |
---|---|---|---|---|---|---|
R_PU | 配置前或配置期间,以及使能可编程上拉电阻选项的用户模式下,I/O管脚上拉电阻的值。 | VCCIO = 3.3 V ± 5% 19 20 | 7 | 25 | 41 | kΩ |
VCCIO = 3.0 V ± 5% 19 20 | 7 | 28 | 47 | kΩ | ||
VCCIO = 2.5 V ± 5% 19 20 | 8 | 35 | 61 | kΩ | ||
VCCIO = 1.8 V ± 5% 19 20 | 10 | 57 | 108 | kΩ | ||
VCCIO = 1.5 V ± 5% 19 20 | 13 | 82 | 163 | kΩ | ||
VCCIO = 1.2 V ± 5% 19 20 | 19 | 143 | 351 | kΩ | ||
R_PD | 配置前和配置器件的I/O管脚下拉电阻值 | VCCIO = 3.3 V ± 5% 21 | 6 | 19 | 30 | kΩ |
VCCIO = 3.0 V ± 5% 21 | 6 | 22 | 36 | kΩ | ||
VCCIO = 2.5 V ± 5% 21 | 6 | 25 | 43 | kΩ | ||
VCCIO = 1.8 V ± 5% 21 | 7 | 35 | 71 | kΩ | ||
VCCIO = 1.5 V ± 5% 21 | 8 | 50 | 112 | kΩ |
19 如果外部源将管脚驱高到VCCIO之上,则管脚上拉电阻值可能会变低。
20 R_PU = (VCCIO – VI)/IR_PU
最低情况:–40°C;VCCIO = VCC + 5% , VI = VCC + 5% – 50 mV;
标准情况:25°C;VCCIO = VCC, VI = 0 V;
最高情况:100°C;VCCIO = VCC – 5% ,VI = 0 V;其中VI 是指I/O管脚的输入电压。
21 R_PD = VI/IR_PD
最低情况:–40°C;VCCIO = VCC + 5% ,VI = 50 mV;
标准情况:25°C;VCCIO = VCC,VI = VCC – 5%;
最高情况:100°C;VCCIO = VCC – 5% , VI = VCC – 5% ;其中VI 是指I/O管脚的输入电压。