EM785841P Ver la hoja de datos (PDF) - ELAN Microelectronics
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EM785841P Datasheet PDF : 45 Pages
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EM785840/5841/5842
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 (undefined) not allowed to use
PAGE1 (Counter2 data register)
Bit7
Bit6
Bit5
Bit4
Bit3
Bit2
Bit1
Bit0
CN27 CN26 CN25 CN24 CN23 CN22 CN21 CN20
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 (CN20 ~ CN27) : Counter2's buffer that user can read and write.
Counter1 is a 8-bit up-counter with 8-bit prescaler that user can use RD PAGE0 to preset and read the
counter.(write Î preset) After a interruption , it will reload the preset value.
__________________________________________________________________________________________________________________________________________________________________
* This specification is subject to change without notice.
14
2004/11/10 V1.2
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