收藏本站
参数资料
型号： KSZ8864RMN-EVAL
厂商： Micrel Inc
文件页数： 94/111页
文件大小： 0K
描述： BOARD EVALUATION FOR KSZ8864RMN
标准包装： 1
主要目的： 接口，以太网控制器（PHY 和 MAC）
嵌入式： 否
已用 IC / 零件： KSZ8864RMN
已供物品： 板
相关产品： 576-3787-ND - IC ETHERNET SW 4PORT 64QFN
其它名称： 576-3869
1997 Microchip Technology Inc.
DS30444E - page 83
PIC16C9XX
12.2
Selecting the A/D Conversion Clock
The A/D conversion time per bit is dened as TAD. The
A/D conversion requires 9.5 TAD per 8-bit conversion.
The source of the A/D conversion clock is software
selected. The four possible options for TAD are:
2TOSC
8TOSC
32TOSC
Internal RC oscillator
For correct A/D conversions, the A/D conversion clock
(TAD) must be selected to ensure a minimum TAD time
of 1.6
s.
Table 12-1 shows the resultant TAD times derived from
the device operating frequencies and the A/D clock
source selected.
12.3
Conguring Analog Port Pins
The ADCON1 and TRISA registers control the opera-
tion of the A/D port pins. The port pins that are desired
as analog inputs must have their corresponding TRIS
bits set (input). If the TRIS bit is cleared (output), the
digital output level (VOH or VOL) will be converted.
The A/D operation is independent of the state of the
CHS2:CHS0 bits and the TRIS bits.
Note 1: When reading the port register, all pins
congured as analog inputs will read as
cleared (a low level). Pins congured as
digital inputs, will convert an analog input.
Analog levels on a digitally congured
input will not affect the conversion accu-
racy.
Note 2: Analog levels on any pin that is dened as
a digital input (including the AN4:AN0
pins), may cause the input buffer to con-
sume current that is out of the devices
specication.
TABLE 12-1: TAD vs. DEVICE OPERATING FREQUENCIES
A/D Clock Source (TAD)
Device Frequency
Operation
ADCS1:ADCS0
8 MHz
5 MHz
1.25 MHz
333.33 kHz
2TOSC
00
250 ns(2)
400 ns(2)
1.6
s
6
s
8TOSC
01
1
s
1.6
s
6.4
s
24
s(3)
32TOSC
10
4
s
6.4
s
25.6
s(3)
96
s(3)
RC
11
2 - 6
s(1,4)
2 - 6
s(1,4)
2 - 6
s(1,4)
2 - 6
s(1)
Legend: Shaded cells are outside of recommended range.
Note 1: The RC source has a typical TAD time of 4
s.
2: These values violate the minimum required TAD time.
3: For faster conversion times, the selection of another clock source is recommended.
4: When derived frequency is greater than 1 MHz, the RC A/D conversion clock source is recommended for
sleep mode only
5: For extended voltage devices (LC), please refer to the electrical specications section.
相关PDF资料
PDF描述
362A024-3/42-0 BOOT MOLDED
0210391088 CABLE JUMPER 1MM .203M 37POS
570-002-744-200 ASSEMBLY RECEPT 2 POS WATERPROOF
202D285-4/42-0 BOOT MOLDED
0210391087 CABLE JUMPER 1MM .178M 37POS
相关代理商/技术参数
参数描述
KSZ8864RMNI 功能描述:以太网 IC 4-Port 10/100 Ethernet Switch w/ 2x PHYs and 2x MAC Interface - Industrial Temp RoHS:否 制造商:Micrel 产品:Ethernet Switches 收发器数量:2 数据速率:10 Mb/s, 100 Mb/s 电源电压-最大:1.25 V, 3.45 V 电源电压-最小:1.15 V, 3.15 V 最大工作温度:+ 85 C 封装 / 箱体:QFN-64 封装:Tray
KSZ8864RMNU 功能描述:以太网 IC 4-Port 10/100BT Switch with MII/RMII (Automotive) RoHS:否 制造商:Micrel 产品:Ethernet Switches 收发器数量:2 数据速率:10 Mb/s, 100 Mb/s 电源电压-最大:1.25 V, 3.45 V 电源电压-最小:1.15 V, 3.15 V 最大工作温度:+ 85 C 封装 / 箱体:QFN-64 封装:Tray
KSZ8864RMNU TR 制造商:Micrel Inc 功能描述:IC ETHERNET SWITCH 4PORT 64MLF
KSZ8873FLL 功能描述:以太网 IC 3-Port Fast Ethernet Switch with 2x FX Ports - Lead free RoHS:否 制造商:Micrel 产品:Ethernet Switches 收发器数量:2 数据速率:10 Mb/s, 100 Mb/s 电源电压-最大:1.25 V, 3.45 V 电源电压-最小:1.15 V, 3.15 V 最大工作温度:+ 85 C 封装 / 箱体:QFN-64 封装:Tray
KSZ8873FLL-EVAL 功能描述:以太网开发工具 3-Port Fast Ethernet Switch with 2x FX Ports - Evaluation Board RoHS:否 制造商:Micrel 产品:Evaluation Boards 类型:Ethernet Transceivers 工具用于评估:KSZ8873RLL 接口类型:RMII 工作电源电压:
发布紧急采购，3分钟左右您将得到回复。

采购需求

(若只采购一条型号，填写一行即可)

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

*型号 *数量 厂商 批号 封装
添加更多采购

我的联系方式

*
*
*