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PDF EM78804A Data sheet ( Hoja de datos )
| Número de pieza | EM78804A | |
| Descripción | 8-BIT MICRO-CONTROLLER | |
| Fabricantes | ELAN Microelectronics | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de EM78804A (archivo pdf) en la parte inferior de esta página. Total 28 Páginas | ||
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EM78804A
8-BIT MICRO-CONTROLLER
Version 1.5
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  
EM78804A
8-bit Micro-controller
V.Functional Block Diagram
Xin Xout PLLC
Oscillator
timing control
WDT timer
prescalar
R1(TCC)
Control sleep
and wake-up
on I/O port
GENERAL
RAM
R4
Interruption
control
ROM
Instruction
register
Instruction
decoder
R2 STACK
ALU
R3
R5
ACC
DATA & CONTROL BUS
RAM
TONE
PORT6
PORT5
IOC6 R6
IOC5 R5
PORT7
IOC7 R7
PORT9
IOC9 R9
LCD
DRIVER
P60~P67
p54~P57
P70~P77
Fig.2 Block diagram
P90~P97
07/13/2004 V1.5
5 Page 
EM78804A
8-bit Micro-controller
If the battery voltage is under 2.5V then sends a '0' signal to RA register bit4 or a '1' signal to this Bit if VDD is over
2.6V.
The relation between /LPD,/POVD and /LOW_BAT can see Fig..7
Fig.7 The relation between /LPD,/POVD
* Bit 4~ 7: unused
9. RC
765432
CIDA7 CIDA6 CIDA5 CIDA4 CIDA3 CIDA2
* Bit 0 ~ Bit 7 select CALLER ID RAM address up to 256.
1
CIDA1
0
CIDA0
10. RD
* Bit 0 ~ Bit 8 are CALLER ID RAM data transfer register.
User can see RB bit0 register how to select CID RAM banks.
11. RE
7 6 5 4 3 2 10
x /WDTE /WUP97 /WUP96 x LCD_C2 LCD_C1 LCD_M
* Bit0 (LCD_M):LCD_M decides the methods, including duty, bias, and frame frequency.
* Bit1~Bit2 (LCD_C#):LCD_C# decides the LCD display enable or blanking. change the display duty must set the
"LCD_C2,LCD_C1" to "00".
LCD_C2,LCD_C1 LCD Display Control
LCD_M duty bias
00
Change duty
0 1/16 1/4
Disable(turn off LCD) 1 1/8 1/4
01
Blanking
::
11
LCD display enable : :
* Bit3 : unused
* Bit4 (/WUP96, PORT9 bit6 Wake Up Enable): used to enable the wake-up function of PORT9 bit6 .
(1/0=enable/disable)
* Bit5 (/WUP97, PORT9 bit7 Wake Up Enable): used to enable the wake-up function of PORT9 bit7 .
(1/0=enable/disable)
* Bit6 (/WDTE,Watch Dog Timer Enable)
Control bit used to enable Watchdog timer.
(1/0=enable/disable)
* Bit7 : unused
07/13/2004 V1.5
11 Page | ||
| Páginas | Total 28 Páginas | |
| PDF Descargar | [ Datasheet EM78804A.PDF ] | |
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