EM78871 Ver la hoja de datos (PDF) - ELAN Microelectronics

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Fabricante

EM78871

8-BIT MICRO-CONTROLLER

ELAN Microelectronics 

EM78871

8-bit Micro-controller

User Application Note

1. ROM, OTP, ICE

ROM

EM78871

OTP

EM78P808

ICE

ICE 808

2. The difference between ICE 808 , EM78P808 and EM78871 are listed in the table

ICE 808

Comparator reference voltage VDD

Stack pointer

O

Data Rom

O

RE page1 bit4

O

IOCE page1 bit0-1

O

EM78P808

VDD or 2V

O

O

O

O

EM78871

VDD or 2V

X

X

(R6 page1 bit0-7&R7 page1

bit0- 7&R8 page1 bit0-7& R9 page1

bit0-1 unused)

X(unused)

X(unused)

RE page1 bit7-6

O

O

IOCE page2 bit0-2, bit4-6

code option bit0

X(unused)

3. "While switching main clock (regardless of high freq to low freq or on the other hand), adding 6

instructions delay (NOP) is required."

4. For DATA RAM least address(A0~A7), when using “INC” instruction and overflow occur,

the middle address will auto_increase. If using “DEC” instruction and least address from

0x00 0xFF, the middle address can’t auto_decrease.

5. When Tip and Ring signals come, user cans choice one of FSK or DTMF receiver to decode.

The Operation Registers Setup as follows:

FSK

(RA PAGE0 bit 3)

0

0

1

DTMF

(IOC9 PAGE1 bit 7)

0

1

X

(don’t care)

FSK or DTMF

All decoder off

DTMF on

FSK off

FSK on

DTMF off

6.Die Pin difference

Pin

EGIN1

EGIN2

Power PAD

Gnd PAD

EM78P808

136 pins

V

V

2(VDD pin & AVDD pin)

2(AVSS pin & GND pin)

EM78871

132 pins

X

X

1(VDD/AVDD pin)

1(AVSS/GND pin)

7.Don’t switch to sleep mode from normal mode directly. Before do this, please

switch to green mode first.

8.Don’t allow enable Idle Mode Function. (RA Page0 bit 7 don’t allow set to 1)

__________________________________________________________________________________________________________________________________________________________________

* This specification is subject to be changed without notice. 3

8/23/04 (V1.5)

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