EM78P569 View Datasheet(PDF) - ELAN Microelectronics
Part Name
Description
MFG CO.
'EM78P569' PDF : 58 Pages View PDF
EM78P569
8-bit OTP Micro-controller
Bit5 and Bit6 are only exist in EM78569’s developing tool(ICE569). In OTP and mask chip, these
two bits will mapping to code option. Please set these two bits to fixed value at initial and do not change
these two bit among your program design. Besides, please set bit4 to 1 or AD function will difference
between ICE 569 and EM78P569
Bit 4: Always set this bit to 1.
Bit 5(PHO) : PCO status select.
0 PC0 defined to normal IO.
1 PC0 defined to phase1 output.(VERSEL must = 1)
Bit 6(VERSEL) : Version select.
Data RAM address
Data ram address auto-
increase
“ADD” & “SUB”
include “carry“ bit
Phase CLK output
VERSEL = 0
R8 page1
Not support
Not support
Not support
VERSEL = 1
RB page2
Enable
Determined by RA page2 bit7
Phase1 CLK out from PC0
(determined by PHO)
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.
Counter2 is a 8-bit up-counter with 8-bit prescaler that user can use RD PAGE1 to preset and read the
counter.(write preset) After a interruption, it will reload the preset value.
Example for writing :
MOV 0x0D, A ; write the data at accumulator to counter2 (preset)
Example for reading :
MOV A, 0x0D ; read the data at counter2 to accumulator
PAGE2(MID 8-bit Multiplication result)
7
MR15
6
MR14
5
MR13
4
MR12
3
MR11
2
MR10
1
MR9
0
MR8
R/W
R/W
R/W
R/W R/W
R/W
R/W
R/W
Bit 0 ~ Bit 7 (MR8 ~ MR15) : Multiplication result data
The multiplier can make a multiplication with X*Y. The multiplicator data buffer X is ACC(acculator) and
the multiplicand data buffer Y is RB PAGE2. The MID 8-bit of maximum 24 bit multiplication result MR
will be stored in RD PAGE2.
RD PAGE2 = MR(8~15) = MID 8-bit (X*Y)
PAGE3 : (undefined) not allowed to use
RE (Interrupt flag, Wake-up control, PWM2 duty latch)
PAGE0 (Interrupt flag, Wake-up control bits)
7
6
5
4
3
2
PWM2 RBF
ADI PWM1 /WUP83 /WUP82
R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0
1
/WUP81
R/W-0
0
/WUP80
R/W-0
__________________________________________________________________________________________________________________________________________________________________
* This specification is subject to be changed without notice.
25
8/19/2004 V4.4
Share Link: 
