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EM78P813BQ Datasheet(PDF) 49 Page - ELAN Microelectronics Corp

Part # EM78P813BQ
Description  8-BIT OTP MICRO-CONTROLLER
Download  65 Pages
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Manufacturer  EMC [ELAN Microelectronics Corp]
Direct Link  http://www.emc.com.tw
Logo EMC - ELAN Microelectronics Corp

EM78P813BQ Datasheet(HTML) 49 Page - ELAN Microelectronics Corp

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EM78P813
8-bit OTP Micro-controller
__________________________________________________________________________________________________________________________________________________________________
* This specification is subject to change without notice.
49
2004/8/19
(V1.6)
mode. When this bit is set to “0”, the Energy Detector works at low frequency mode. The difference between high
frequency and low frequency is as follows.
DEDPWR DEDCLK
ENPLL
Energy detector clock
Main CLK
0
X
X
X
Decision by ENPLL
1
0
0
32.768 KHz
Disable
1
0
1
32.768 KHz
Enable
1
1
0
3.5826 MHz
Enable
1
1
1
3.5826 MHz
Enable
PS. “X” means don’t care
Bit 3(CW_SMB) : Call Waiting / short message receiver switch
0
Short message mode select.
± 5.5% CAS tone accepted frequency range deviation.(Protocol : ± 5%)
1
Call Waiting mode select. CAS tone accepted frequency range deviation is decided on CODE Option
Register bit 5 ( 1:for Europe and USA / 0:for China )
Bit 4 (WUEDD) : Wake-up control of Energy Detector (DED) output data
1/0
enable/disable
Bit 5 (EDGE) : Wake-up and interrupt trigging edge control of Energy Detector (DED) output
1/0
Falling edge trig. / Rising edge and Falling edge trig.
Bit 6(DEDD) : Output data of Differential Energy Detector (DED) If input signal from TIP/EGIN1 and RING/EGIN2 pin
to Differential Energy Detector is over the threshold level setting at IOCE PAGE 2 bit 0 (DEDTHD), the DED will
extract the zero-crossing pulse waveform corresponding to input signal.
Bit 7 (VRSEL) : Reference voltage VR selection bit for Comparator
0
VR = VDD
1
VR = 2.0V
When this bit is set to “0”, V2_0 ref. circuit will be powered off. 2.0V ref. circuit is only powered on when this
bit and RA page2 bit 7(CMPEN) are all set to “1”.
IOCF Interrupt Mask Register2
7
6
5
4
3
2
1
0
RBF/STD FSK/CW
0
UART
DED
CNT2
CNT1
TCC
Bit 0~Bit 4, Bit6~Bit7 : Interrupt enable bits.
0/1
disable interrupt/enable interrupt
Bit4: Undefined register. This bit must keep to 0.


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