参数资料
型号: PIC12F635-I/SN
厂商: Microchip Technology
文件页数: 68/74页
文件大小: 0K
描述: IC MCU FLASH 1KX14 8SOIC
产品培训模块: Asynchronous Stimulus
8-bit PIC® Microcontroller Portfolio
标准包装: 100
系列: PIC® 12F
核心处理器: PIC
芯体尺寸: 8-位
速度: 20MHz
外围设备: 欠压检测/复位,POR,WDT
输入/输出数: 5
程序存储器容量: 1.75KB(1K x 14)
程序存储器类型: 闪存
EEPROM 大小: 128 x 8
RAM 容量: 64 x 8
电压 - 电源 (Vcc/Vdd): 2 V ~ 5.5 V
振荡器型: 内部
工作温度: -40°C ~ 85°C
封装/外壳: 8-SOIC(0.154",3.90mm 宽)
包装: 管件
产品目录页面: 637 (CN2011-ZH PDF)
配用: AC162057-ND - MPLAB ICD 2 HEADER 14DIP
Micrel, Inc.
KSZ8841-PMQL
October 2007
70
M9999-100407-1.5
Selection of Isolation Transformers
A 1:1 isolation transformer is required at the line interface. An isolation transformer with integrated common-mode choke
is recommended for exceeding FCC requirements.
The following table gives recommended transformer characteristics.
Parameter
Value
Test Condition
Turns ratio
1 CT : 1 CT
Open-circuit inductance (min)
350
H
100mV, 100kHz, 8mA
Leakage inductance (max)
0.4
H
1MHz (min)
Inter-winding capacitance (max)
12pF
D.C. resistance (max)
0.9
Insertion loss (max)
1.0dB
0MHz – 65MHz
HIPOT (min)
1500Vrms
Table 9. Transformer Selection Criteria
The following transformer vender provide compatible transformers for Micrel’s device:
Magnetic Manufacturer
Part Number
Auto MDI-X
Number of Port
Pulse
H1102
Yes
1
Pulse (low cost)
H1260
Yes
1
Transpower
HB726
Yes
1
Bel Fuse
S558-5999-U7
Yes
1
Delta
LF8505
Yes
1
LanKom
LF-H41S
Yes
1
TDK (Mag Jack)
TLA-6T718
Yes
1
Table 10. Qualified Single Port Magnetics
Selection of Reference Crystal
Characteristics
Value
Units
Frequency
25
MHz
Frequency tolerance (max)
±50
ppm
Load capacitance (max)
20
pF
Series resistance
25
Table 11. Typical Reference Crystal Characteristics
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