O
-M MOTOROLA
MC2850P
‘.<,*,
h18.2+ 0.4 4
II
1DSJO03
HEADO A
HEADO B
HEAD1 A
HEAD IB
A.GND
(ANALoG),s. GND
WRITE DUMP A
.WRITE DUMP B
COMMON 1
Vcc
COMMON O
..\
DIFFERENTIATOR
c
12
c13
c14
c15
c16
c17
c18
c19
c20
c21
c22
P
—
D,GND
MMVA
MMVB
-
IVDD
MMVA CONTROL
ICONTROL
LOGIC I
MOTOROU 2
I I
u‘>UI
,, -1 ‘“ II
Wlzl
12v– 1CONTROL
LOGIC w
34 —
I
)(
w
RW
COMF
3MOTORO~
MOTOROM 4
5MOTOROU
MOTOROW 6
I I I
l12t321–lkQl
I4.15 Il–l–llOO1nsl
7MOTOROU
7U
36 37 40
RMMVB RMMVA
COMP.
9MOTOROU
A
COMP. INPUT BA@fS% O5V
tl
.I
VDD
u
26 25
RW COMP
RW
lWC= RW COMP
1.3–VWC Xlo (ADC)
EW=I1–+IX1OO
MOTOROU 10
EWC =I2–(I:–11)I X100
[11’,12’, (11’> 12’)]
DW= I I _2x(11–11’)
11+11’ Ix 100
“DE’”<
I
Iw
,, ,,
H
E,, ,!
L
MOTOROU 12
E1PD–TA
❑3t2–RB
..... 0.3
0.1 1 3 5 10 30 50 100 300500
RW (kQ)
❑6VER–IE
0.4
0.3
s
60.2
>
0.1
0
1 3 5 10 30 50 100 300 020 40 60 80 100 120
RWCOMP (kQ )IE (mA)
13 MOTORO~
Read Dump B
a10 -––––––1
Lh Ch RD 1{
Cin R“
I
11--–––-J
Read Dump A
C= Cin // Ch, R= Rin // RD
WG r
I
&jRHEAD
VCOMMON
READ%
WRITE%
ERASEX
15 MOTORO~’
MC2850PJ/D