EM78P5840M Ver la hoja de datos (PDF) - ELAN Microelectronics

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EM78P5840M

8-BIT MICRO-CONTROLLER

ELAN Microelectronics 

EM78P5840/5841/5842

8-bit Micro-controller

Table2: the major differences between EM78P5830 and EM78P5840 series:

EM78P5830 series

EM78P5840 series

CID RAM

256 byte

NA

ERIC mode

NA

Under 6M Hz

IRC mode

NA

2M / 4M Hz

WDT source

Crystal or PLL

IRC1

External CNT1 input

NA

Shared with P94

P71 pull high

Internal pull high

External pull high

/RESET pin

/RESET only

Shared with P71

PLLC pin

PLLC only

Shared with P70 and ERCI

XIN, XOUT

Crystal input

Shared with P60 and P61

Table3: the major differences between ICE5840, EM78P5840 and EM785840:

ICE5840

EM78P5840 series

EM785840 series

CID RAM

1024 byte

NA

NA

CID RAM address auto

V

+1

NA

NA

CNT1 (**)

8 bit counter

8 bit counter

8 or 16 (shared with

CNT2) bit counter

CNT2 (**)

V

X

V

STACK

12

8

8

** CNT2 is only exist on EM78P5840/41/42 and EM785840/41/42, CNT2 is un-support on ICE5840.

Table4: Differences between EM78P5840, EM78P5841 and EM78P5842:

EM78P5840

EM78P5841

Pin count

18

20

PWM

X

2 channel

IO (MAX)

16

18

EM78P5842

24

2 channel

22

User Application Note

(Before using this chip, take a look at the following description note, it includes important messages.)

1. There are some undefined bits in the registers. The values in these bits are unpredicted. These

bits are not allowed to use. We use the symbol “-” in the spec to recognize them. A fixed value

must be write in some specific unused bits by software or some unpredicted wrong will occur.

2. You will see some names for the register bits definitions. Some name will be appear very

frequently in the whole spec. The following describes the meaning for the register’s definitions

such as bit type, bit name, bit number and so on.

__________________________________________________________________________________________________________________________________________________________________

* This specification is subject to change without notice.

1

2004/11/10 V2.6

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