参数资料
型号: PIC18F252-E/SO
厂商: Microchip Technology
文件页数: 30/134页
文件大小: 0K
描述: IC MCU CMOS 40MHZ 16K FLSH28SOIC
产品培训模块: Asynchronous Stimulus
标准包装: 27
系列: PIC® 18F
核心处理器: PIC
芯体尺寸: 8-位
速度: 40MHz
连通性: I²C,SPI,UART/USART
外围设备: 欠压检测/复位,LVD,POR,PWM,WDT
输入/输出数: 23
程序存储器容量: 32KB(16K x 16)
程序存储器类型: 闪存
EEPROM 大小: 256 x 8
RAM 容量: 1.5K x 8
电压 - 电源 (Vcc/Vdd): 4.2 V ~ 5.5 V
数据转换器: A/D 5x10b
振荡器型: 外部
工作温度: -40°C ~ 125°C
封装/外壳: 28-SOIC(0.295",7.50mm 宽)
包装: 管件
Micrel, Inc.
KSZ8864RMN
April 2012
17
M9999-043012-1.5
Pin for Strap-In Options (Continued)
Pin Number
Pin Name
Type
(1)
Port
Pin Function
(2)
47
SCONF1
IPD
MAC4 Switch SW4-MII enabled with PHY mode or MAC mode, have to configure
SCONF1 Pin 47 with SCONF0 Pin 48 together.
See pins configuration table below:
Pin# (47,48)
Switch MAC4
SW4- MII/RMII
00 (Default)
SW4-MII PHY mode
01
Disabled
10
Disabled
11
SW4-MII MAC mode
48
SCONF0
IPD
Port 4 Switch SW4-MII enabled with PHY mode or MAC mode, have to configure
SCONF0 Pin 48 with SCONF1 Pin 47 together.
See pin 47 description.
49
P2LED1
IPU/O
2
LED indicator for Port 2.
This pin has to be pulled down by 1K resistor in the design for KSZ8864RMN.
50
P2LED0
IPU/O
2
LED indicator for Port 2.
Strap option: Switch MAC3 used only.
PU (default) = Select MII interface for the Switch MAC3 SW3-MII.
PD = Select RMII interface for the Switch MAC3 SW3-RMII.
51
P1LED1
IPU/O
1
LED indicator for Port 1.
Strap option: Switch RMII used only.
PU (default) = Select the device as clock mode. When use RMII interface, all
clock source come from Pin x1/x2 crystal 25MHz.
PD = Select the device as normal mode when use RMII interface. All clock
sources come from SW4-RMII SM4TXC pin with an external input 50MHz clock.
In the normal mode, the 25MHz crystal clock from pin X1/X2 doesn’t take affect
and should disable SW4-RMII SW4RXC 50MHz clock output by the register 87.
The normal mode is used when SW4-RMII receive an external 50MHz RMII
reference clock from pin SM4TXC.
52
P1LED0
IPU/O
1
LED indicator for Port 1.
Strap option: for Switch MAC4 only.
PU (default) = Select MII interface for the Switch MAC4 SW4-MII.
PD = Select RMII interface for the Switch MAC4 SW4-RMII.
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