參數(shù)資料
型號: MC68HC705CL48
廠商: FREESCALE SEMICONDUCTOR INC
元件分類: 微控制器/微處理器
英文描述: 8-BIT, OTPROM, 1.802 MHz, MICROCONTROLLER, PQFP112
封裝: TQFP-112
文件頁數(shù): 140/145頁
文件大?。?/td> 673K
代理商: MC68HC705CL48
GENERAL RELEASE SPECIFICATION
June 11, 1997
MOTOROLA
CALLER-ID
MC68HC05CL48
11-10
REV 2.0
The transmission level from the terminating C.O will be -13.5 dBm +/- 1.0. The
expected worst case attenuation through the loop is expected to be -20dB. The
receiver therefore, should have a sensitivity of approximately -34.5 dB to handle
the worst case installations.
Table 11-2. Critical Design Characteristic
Characteristics
Typ
Unit
Input Tip/Ring Sensitivity (600 ohm)
-40
dBm
Ring/Tip Common Mode Rejection Ratio
60
dB
Bandpass Filter (BPF)
Frequency Response (relative to 1700
Hz @ 0 dB)
60 Hz
1000 Hz
2400 Hz
>=3300 Hz
-58
-1
-34
dB
Carrier Detect Sensitivity (600 ohm)
-40 (-48 min)
dBm
Ring Detect Threshold (RDI2)
0.39*Vdd
± 0.1volt
Volts
RDI Threshold to keep RT_L=’1’
< 1.0
Volts
Table 11-3. Switching Characteristics (VDD= 5V; TA=25 C)
Description
Symbol
Min
Typ
Max
Unit
PLL Clock Start-up Time
tDOSC
-
10
ms
Carrier Detect Acquisition
tDAQ
-14
25
ms
End of Carrier Detect
tDCH
8-
-
ms
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