参数资料
| 型号： | KSZ8864RMNI |
| 厂商： | Micrel Inc |
| 文件页数： | 7/111页 |
| 文件大小： | 0K |
| 描述： | IC ETHERNET SWITCH 4PORT 64QFN |
| 特色产品： | KSZ8864RMN Ethernet Switches |
| 标准包装： | 348 |
| 系列： | * |
| 其它名称： | 576-3995 |
第1页第2页第3页第4页第5页第6页当前第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页第30页第31页第32页第33页第34页第35页第36页第37页第38页第39页第40页第41页第42页第43页第44页第45页第46页第47页第48页第49页第50页第51页第52页第53页第54页第55页第56页第57页第58页第59页第60页第61页第62页第63页第64页第65页第66页第67页第68页第69页第70页第71页第72页第73页第74页第75页第76页第77页第78页第79页第80页第81页第82页第83页第84页第85页第86页第87页第88页第89页第90页第91页第92页第93页第94页第95页第96页第97页第98页第99页第100页第101页第102页第103页第104页第105页第106页第107页第108页第109页第110页第111页
PIC16C9XX
DS30444E - page 104
1997 Microchip Technology Inc.
14.2
Oscillator Congurations
14.2.1
OSCILLATOR TYPES
The PIC16CXXX can be operated in four different oscil-
lator modes. The user can program two conguration
bits (FOSC1 and FOSC0) to select one of these four
modes:
LP
Low Power Crystal
XT
Crystal/Resonator
HS
High Speed Crystal/Resonator
RC
Resistor/Capacitor
14.2.2
CRYSTAL OSCILLATOR/CERAMIC
RESONATORS
In XT, LP or HS modes a crystal or ceramic resonator
is connected to the OSC1/CLKIN and OSC2/CLKOUT
pins
to
establish
oscillation
The
PIC16CXXX oscillator design requires the use of a par-
allel cut crystal. Use of a series cut crystal may give a
frequency out of the crystal manufacturers specica-
tions. When in XT, LP or HS modes, the device can
have an external clock source to drive the OSC1/CLKIN
pin (Figure 14-3).
FIGURE 14-2: CRYSTAL/CERAMIC
RESONATOR OPERATION
(HS, XT OR LP
OSC CONFIGURATION)
FIGURE 14-3: EXTERNAL CLOCK INPUT
OPERATION (HS, XT OR LP
OSC CONFIGURATION)
C1
C2
XTAL
OSC2
Note1
OSC1
RF
SLEEP
To internal
logic
PIC16CXXX
RS
See Table 14-1 and Table 14-2 for recommended
values of C1 and C2.
Note 1: A series resistor may be required for AT
strip cut crystals.
OSC1
OSC2
Open
Clock from
ext. system
PIC16CXXX
TABLE 14-1: CERAMIC RESONATORS
TABLE 14-2: CAPACITOR SELECTION FOR
CRYSTAL OSCILLATOR
Ranges Tested:
Mode
Freq
OSC1
OSC2
XT
455 kHz
2.0 MHz
4.0 MHz
68 - 100 pF
15 - 68 pF
68 - 100 pF
15 - 68 pF
HS
8.0 MHz
10 - 68 pF
These values are for design guidance only. See
notes at bottom of page.
Resonators Used:
455 kHz
Panasonic EFO-A455K04B
± 0.3%
2.0 MHz
Murata Erie CSA2.00MG
± 0.5%
4.0 MHz
Murata Erie CSA4.00MG
± 0.5%
8.0 MHz
Murata Erie CSA8.00MT
± 0.5%
All resonators used did not have built-in capacitors.
Osc Type
Crystal
Freq
Cap. Range
C1
Cap. Range
C2
LP
32 kHz
33 pF
200 kHz
15 pF
XT
200 kHz
47-68 pF
1 MHz
15 pF
4 MHz
15 pF
HS
4 MHz
15 pF
8 MHz
15-33 pF
These values are for design guidance only. See
notes at bottom of page.
Crystals Used
32 kHz
Epson C-001R32.768K-A
± 20 PPM
200 kHz
STD XTL 200.000KHz
± 20 PPM
1 MHz
ECS ECS-10-13-1
± 50 PPM
4 MHz
ECS ECS-40-20-1
± 50 PPM
8 MHz
EPSON CA-301 8.000M-C
± 30 PPM
Note 1: Recommended values of C1 and C2 are
identical to the ranges tested (Table 14-1).
2: Higher capacitance increases the stability
of oscillator but also increases the start-up
time.
3: Since each resonator/crystal has its own
characteristics, the user should consult the
resonator/crystal manufacturer for appropri-
ate values of external components.
4: Rs may be required in HS mode as well as
XT mode to avoid overdriving crystals with
low drive level specication.
相关PDF资料 |
PDF描述 |
|---|---|
| KSZ8873FLLI | IC ETHERNET SWITCH 3PORT 64LQFP |
| KSZ8873MLLJ | IC ETHERNET SWITCH 3PORT 64LQFP |
| KSZ8873MMLI | IC ETHERNET SWITCH 3PORT 64LQFP |
| KSZ8893FQL | IC SWITCH FAST ETH 3PORT 128PQFP |
| KSZ8895MQI | IC ETHERNET SWITCH 5PORT 128PQFP |
相关代理商/技术参数 |
参数描述 |
|---|---|
| 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: |
| KSZ8873FLLI | 功能描述:以太网 IC 3-Port Fast Ethernet Switch with 2x FX Ports (Industrial Grade) 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 |
发布紧急采购，3分钟左右您将得到回复。