EM78P569 View Datasheet(PDF) - ELAN Microelectronics
Part Name
Description
MFG CO.
'EM78P569' PDF : 58 Pages View PDF
EM78P569
8-bit OTP Micro-controller
0
x
Disable indirect address pointer
Disable Multiplicant Y data address auto-increment for multiplier
RB PAGE2 acts as Multipliacnt Y data buffer for multiplier
Multiplicant Y data is stored in RB PAGE1 for multiplier
Set
RA PAG2
(bit5,bit4)
(bit3..Bit0)
= (1,1)
= (0,0) or (0,1)
= (1,0)
Y_data = R9 PAGE1
Y_addr = RB
PAGE2
Y_data = RB
PAGE2
Y_addr = 0x0B
Y_data = R9 PAGE1
Y_addr = RB
PAGE2
case3
case1
mov X_data to ACC case2
case3
Y_addr =
RB PAGE2 +1
INT A
instruction
case1
Y_addr = 0x0B
case2
Y_addr = RB
PAGE2
Fig 8: Multiplier control flow
Bit 6 : Unused. This bit is not allow to use.
Bit 7(INS) : Instruction ”ADD” and “DEC” calculation select . This bit is a write only bit. .
This bit’s define is based on “VERSEL”. If “VERSEL” = 0, this bit is undefined. If “VERSEL” = 1, this bit
will effect the result after run “ADD” and “SUB” instruction.
__________________________________________________________________________________________________________________________________________________________________
* This specification is subject to be changed without notice.
21
8/19/2004 V4.4
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