EM785840M Ver la hoja de datos (PDF) - ELAN Microelectronics

Número de pieza

componentes Descripción

Fabricante

EM785840M

8-BIT MICRO-CONTROLLER

ELAN Microelectronics 

EM785840/5841/5842

8-bit Micro-controller

Bit 6~Bit 7(RPAGE0 ~ RPAGE1): change R5 ~ RE to another page

Please refer to VII.1 Operational registers for detail register configuration.

(RPAGE1,RPAGE0)

R page # selected

(0,0)

R page 0

(0,1)

R page 1

(1,0)

R page 2

(1,1)

R page 3

R4 (RAM selection for common registers R20 ~ R3F))

(RAM selection register)

7

6

5

4

3

2

1

0

RB1 RB0 RSR5 RSR4 RSR3 RSR2 RSR1 RSR0

R/W-0 R/W-0 R/W R/W R/W R/W R/W R/W

Bit 0 ~ Bit 5 (RSR0 ~ RSR5) : Indirect addressing for common registers R20 ~ R3F

RSR bits are used to select up to 32 registers (R20 to R3F) in the indirect addressing mode.

Bit 6 ~ Bit 7 (RB0 ~ RB1) : Bank selection bits for common registers R20 ~ R3F

These selection bits are used to determine which bank is activated among the 4 banks for 32 register (R20 to

R3F)..

Please refer to VII.1 Operational registers for details.

R5 (Program page selection, PWM control)

PAGE0 (PORT5 I/O data register, Program page register)

7

6

5

4

3

2

1

0

X

X

X

X

0

0

PS1

PS0

-

-

-

-

R/W-0 R/W-0 R/W-0 R/W-0

Bit 0 ~ Bit 1 (PS0 ~ PS1) : Program page selection bits

PS1 PS0 Program memory page (Address)

0 0 Page 0

0 1 Page 1

1 0 Page 2

1 1 Page 3

User can use PAGE instruction to change page to maintain program page by user.

Bit2~Bit3 : (undefined) These 2 bits must clear to 0 or MCU will access wronging program code.

Bit4~Bit7 : (undefined) not allowed to use

PAGE1, PAGE2 (Unused registers)

These two registers are not allowed to use.

PAGE3 (PWMCON)

7

6

5

4

3

2

PWM2E PWM1E T2EN T1EN T2P1 T2P0

R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0

Bit 0 ~ Bit 1 ( T1P0 ~ T1P1 ): TMR1 clock prescale option bits.

T1P1

T1P0

Prescale

0

0

1:2(Default)

0

1

1:8

1

0

1:32

1

1

1:64

1

T1P1

R/W-0

0

T1P0

R/W-0

__________________________________________________________________________________________________________________________________________________________________

* This specification is subject to change without notice.

9

2004/11/10 V1.2

Share Link: