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GM
S81C51
08
84
JU
NE 2001
Ver
1.0
24
.2 Emulat
or S/W Sett
ing
POWER
RUN
STOP
SLEEP
CHO
ICE-
D
r.
EV
A 81C51
B/D Rev 1.0
S
/N
. -
--
--
---
--
--
--
-
CONNECTA
CONNECTB
CONNECTC
J_USERB
RESET
J_USERA
V_USER
X1 (OSC)
X2
/RESET
XOUT
LC
D
_
V
D
D
VLC
D
C
SEG46
SEG44
SEG42
SEG40
SEG38
VREG
COM1/S36
COM3/S34
SEG32
SEG30
SEG28
SEG26
SEG24
SEG22
SEG20
SEG18
SEG16
SEG14
SEG12
SEG10
SEG8
SEG6
SEG4
SEG2
SEG0
SEG47
SEG45
SEG43
SEG41
SEG39
SEG37
COM0
COM2/S35
SEG33
SEG31
SEG29
SEG27
SEG25
SEG23
SEG21
SEG19
SEG17
SEG15
SEG13
SEG11
SEG9
SEG7
SEG5
SEG3
SEG1
GND
VCL1
VLCDC
CB
GND
REMOUT (TONED)
GND
R36
R34
R21
R23
R25
R27
R16
R14
R12
R10
R06
R04
R02
R00
R32
R30
+5V
GND
VCL0
VCL2
CA
GND
/U_RST
U_XOUT
GND
R37
R35
R20
R22
R24
R26
R17
R15
R13
R11
R07
R05
R03
R01
R33
R31
+5V
J_USERB
J_USERA
SW
4
SW
5
Ex
te
rn
a
l O
s
c
illa
to
r
Socket
GM
S8
1C
51
EVA
+5
V
SW
2
2 1
OFF ON
O
FF O
N
SW
1
VR1
VR2
1
2
3
4
5
6
7
1
2
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