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PDF EM78808 Data sheet ( Hoja de datos )
| Número de pieza | EM78808 | |
| Descripción | 8-BIT MICROCONTROLLER | |
| Fabricantes | ELAN Microelectronics | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de EM78808 (archivo pdf) en la parte inferior de esta página. Total 30 Páginas | ||
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EM78808
8-BIT MICRO-CONTROLLER
Version 3.1
ELAN MICROELECTRONICS CORP.
No. 12, Innovation 1st RD., Science-Based Industrial Park
Hsin Chu City, Taiwan, R.O.C.
TEL: (03) 5639977
FAX: (03) 5630118
1 page  
EM78808
8-bit Micro-controller
FSK demodulator for Bell 202 and ITU-T V.23 (formerly as CCITT V.23)
Differential Energy Detector (DED) for line energy detection
CALL WAITING
Operation Voltage 2.6V 5.5V
Compatible with Bellcore special report SR-TSV-002476
Call-Waiting (2130Hz plus 2750Hz) Alert Signal Detector
Good talkdown and talkoff performance
Sensitivity compensated by adjusting input OP gain
LCD (8x80, 9x80, 16x80, 24x72)
Maximum common driver pins : 16/24
Maximum segment driver pins : 80(SEG0..SEG79)/72(SEG8..SEG79)
Shared COM16 ~ COM23 pins with SEG0 ~ SEG7 pins
1/4 bias for 8, 9 and 16 common mode and 1/5 bias for 24 common mode
1/8, 1/9, 1/16, 1/24 duty
16 Level LCD contrast control (software)
Internal resistor circuit for LCD bias
Internal voltage follower for better display
Package type
136 pin Chip : EM78808BH
128 pin QFP : (EM78808AAQ , POVD disable) (EM78808ABQ , POVD enable)
128 pin QFP : (EM78808BAQ , POVD disable) (EM78808BBQ , POVD enable)
III.Application
1. adjunct units
2. answering machines
3. feature phones
______________________________________________________________________________________________________________________________________________________
* This specification is subject to change without notice.
8/1/2004 (V3.1)
5
5 Page 
SERIAL IO
SCK
IO (PORT60)
SDO
O (PORT61)
SDI
Comparator
CMP1
CMP2
CMP3
CURRENT DA
DAOUT
I (PORT62)
I (PORT63)
I (PORT64)
I (PORT65)
O (PORT66)
IO
P55 ~P57
P60 ~P67
P70 ~ P77
I/O
I/O
I/O
P80 ~ P87
P90 ~ P97
PB0 ~ PB7
PC0 ~ PC7
INT0
INT1
INT2
TEST
/RESET
EDIN1
EGIN2
I/O
I/O
I/O
I/O
PORT70..73
PORT74..76
PORT77
I
I
I
EM78808
8-bit Micro-controller
Master: output pin, Slave: input pin. This pin shared with
PORT60.
Output pin for serial data transferring. This pin shared with
PORT61.
Input pin for receiving data. This pin shared with PORT62.
Comparator input pins. Shared with PORT63, PORT64 and
PORT65.
Current DA output pin. It can be a control signal for sound
generating.
Shared with PORT66.
PORT 5 can be INPUT or OUTPUT port each bit.
PORT 6 can be INPUT or OUTPUT port each bit.
Internal pull high.
PORT 7 can be INPUT or OUTPUT port each bit.
Internal Pull high function.
Auto key scan function.
Interrupt function.
PORT 8 can be INPUT or OUTPUT port each bit.
Shared with LCD Segment signal.
PORT 9 can be INPUT or OUTPUT port each bit.
Shared with LCD Segment signal.
PORT B can be INPUT or OUTPUT port each bit.
Shared with LCD Segment signal.
PORT C can be INPUT or OUTPUT port each bit.
Shared with LCD Segment signal.
Interrupt sources which has the same interrupt flag. Any pin from
PORT70 to PORT73 has a falling edge signal, it will generate a
interruption.
Interrupt sources which has the same interrupt flag. Any pin from
PORT74 to PORT76 has a falling edge signal, it will generate a
interruption.
Interrupt source. Once PORT77 has a falling edge or rising edge
signal (controlled by CONT register), it will generate a
interruption.
Test pin into test mode for factory test only. Connect it ground in
application.
Low reset
Differential Energy Detector input pin
It can detect external analog signal
______________________________________________________________________________________________________________________________________________________
* This specification is subject to change without notice.
8/1/2004 (V3.1)
11
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet EM78808.PDF ] | |
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