EM78P5842 Просмотр технического описания (PDF) - ELAN Microelectronics

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EM78P5842

8-BIT MICRO-CONTROLLER

ELAN Microelectronics 

EM78P5840/5841/5842

8-bit Micro-controller

RB (ADC input data buffer)

PAGE0 : (undefined) not allowed to use

PAGE1 (ADC output data register)

7

6

5

4

3

2

1

0

AD7 AD6 AD5 AD4 AD3 AD2 AD1 AD0

R

R

R

R

R

R

R

R

Bit 0 ~ Bit 7 (AD0 ~ AD7) : The last significant 8 bit of 10-bit or whole of 8 bit resolution ADC conversion

output data. Combine there 8 bits and R7 PAGE1 bit4~5 as complete 10-bit ADC conversion output data in 10

bit resolution mode.

PAGE 2 (undefined) not allowed to use

PAGE3 (PRD2: Period of PWM2)

7

6

5

4

3

2

1

0

PRD2[7] PRD2[6] PRD2[5] PRD2[4] PRD2[3] PRD2[2] PRD2[1] PRD2[0]

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

The content of this register is a period (time base) of PWM2. The frequency of PWM2 is the reverse of the

period.

RC (PORTC I/O data, Counter1 data)

PAGE0 (PORT9 I/O data register)

7

6

5

4

3

2

1

0

X

X

X

X

X

PC2

PC1

X

-

-

-

-

-

R/W

R/W

-

Bit 1 ~ Bit 2 (PC1 ~ PC2) : PORTC1,PORTC2 I/O data register

User can use IOC register to define input or output each bit.

Bit 0; Bit 3~Bit 7: (undefined) not allowed to use.(These bits are not sure to 0 or 1 )

PAGE1 (Counter1 data register)

Bit7

Bit6

Bit5

Bit4

Bit3

Bit2

Bit1

Bit0

CN17 CN16 CN15 CN14 CN13 CN12 CN11 CN10

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

Bit 0 ~ Bit 7 (CN10 ~ CN17) : Counter1's buffer that user can read and write.

Counter1 is a 8-bit up-counter with 8-bit prescaler that user can use RC PAGE1 to preset and read the

counter.(write Î preset) After a interruption , it will reload the preset value.

Example for writing :

MOV 0x0C, A ; write the data at accumulator to counter1 (preset)

Example for reading :

MOV A, 0x0C ; read the data at counter1 to accumulator

PAGE2,3 (undefined) not allowed to use.

RD (Undefined register)

PAGE0 (Unused)

7

6

5

4

3

2

1

0

X

0

0

0

X

0

0

0

-

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

-

R/W

R/W

R/W

Bit 0 ~Bit 2 : These three bits must clear to 0 or MCU power consumption will increase.

Bit 3 , Bit 7 : (undefined) not allowed to use

Bit4 ~ Bit6 : These 3 bits are unused in mask/OTP EM785840, but they are used for ICE5830. About the

definition of these 3 bits, please refer to appendix II. In ICE5830, please clear bit4, bit5 and bit6 to 0.

PAGE1,2,3 (undefined) not allowed to use.

__________________________________________________________________________________________________________________________________________________________________

* This specification is subject to change without notice.

15

2004/11/10 V2.6

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