IPN 220-01396-03
B6.3.26 T855 PCB Information M8SL2-00-002-812
© Copyright Tait Electronics Limited August 2004. All rights reserved.
Sheet 8 – T855 Microcontroller
220-01396-03
0
1
2
3
4
5
6
7
8
9
0
1
2
3
4
5
6
7
8
9
ABCDEFGHJ KLMNPQR
REV/ISS AMENDMENTS DATEAPVDD.O.CHKDDRAWN
NO.SHEETS:FILE NAME:
TAIT ELECTRONICS
IPN:
FILE DATE:
ISSUE: ID:.
2.SC.
PROJECT: DESIGNER:
8
10
T855
MICROCONTROLLER
1396_03B
220-01396-03
02-02-99
03B
T855RX BENC
R822
47K
R811
4K7
R810
4K7
R824
2K2
R825
2K2
R826
2K2
R827
2K2
R828
2K2
R840
2K2
R841
2K2
R842
2K2
R813
4K7
R812
4K7
R805
470
R823
47K
C813
1N0
IC820
24C16
A0
1
A1
2
A2
3
GND
4
+V
8
SCL
6
SDA
5
WP
7
R849
470
R850
470
R851
470
R809
4K7
R843
2K2
R804
47K
C850
47N
R808
10
P810
I/OPAD
R837
2K2
R836
2K2
R835
2K2
R833
2K2
R832
2K2
R831
2K2
R830
2K2
R829
2K2
SK805
2X8 WAY TOP ENTRY SMD SKT
1
SK805
2X8 WAY TOP ENTRY SMD SKT
2
SK805
2X8 WAY TOP ENTRY SMD SKT
3
SK805
2X8 WAY TOP ENTRY SMD SKT
4
SK805
2X8 WAY TOP ENTRY SMD SKT
5
SK805
2X8 WAY TOP ENTRY SMD SKT
6
SK805
2X8 WAY TOP ENTRY SMD SKT
7
SK805
2X8 WAY TOP ENTRY SMD SKT
8
SK805
2X8 WAY TOP ENTRY SMD SKT
9
SK805
2X8 WAY TOP ENTRY SMD SKT
10
SK805
2X8 WAY TOP ENTRY SMD SKT
11
SK805
2X8 WAY TOP ENTRY SMD SKT
12
SK805
2X8 WAY TOP ENTRY SMD SKT
13
SK805
2X8 WAY TOP ENTRY SMD SKT
14
SK805
2X8 WAY TOP ENTRY SMD SKT
15
SK805
2X8 WAY TOP ENTRY SMD SKT
16
P820
I/OPAD
P825
I/OPAD
P830
I/OPAD
P835
I/OPAD
R854
330K
R855
47K
R858
27K 1%
C815
10N
C826
10N
C828
10N
R859
1M2 1%
R860
820K 1%
C818
10N
R856
150K
R857
150K
C819
33P
C820
220P
C824
47N
C822
22N
+
-
IC830
LM324D
10
9
8
+
-
IC830
LM324D
5
6
7
C834
10N
R866
820K
IC850
LM324D
V-
11
V+
4
+
-
IC830
LM324D
3
2
1
R861
5K1 1%
R868
4K7
C836
10N
R869
27K 1%
C837
10N
R870
1M2 1%
C838
10N
R871
820K 1%
+
-
IC830
LM324D
12
13
14
R872
5K1 1%
R873
2K2
IC840
4053BD
INH
6
A
11
B
10
C
9
X0
12
X1
13
Y0
2
Y1
1
Z0
5
Z1
3
GND
8
VREF
7
+V
16
Z
4
X
14
Y
15
R877
100K
R878
100K
R876
100K
R879
100K
C842
1U0
C844
1U0
C846
1U0
C848
1U0
R891
100K
+
-
IC850
LM324D
10
9
8
+
-
IC850
LM324D
3
2
1
+
-
IC850
LM324D
12
13
14
+
-
IC850
LM324D
5
6
7
R892
330K
BAV70
D860
23
R889
100K
R890
150K
R898
470K
R897
10K
R895
10K
C879
10U
R884
150K
R885
150K
C873
22N
C876
100U
R888
8K2 1%
R887
1K0 1%
R886
10K 1%
IC830
LM324D
V-
11
V+
4
R821
47K
R820
47K
C816
10N
R863
4K7
BAV70
D860
13
R894
4K7
R852
4K7
R881
47K
R882
47K
R875
4K7
R844
47K
R845
150K
C830
47N
P815
I/OPAD
R846
4K7
R847
4K7
Q810
BC817
Q870
BC848
Q890
BC848
Q880
BC848
Q895
BC848
Q860
BC857
Q820
BC857
SK810
80C51
P1.7
9
P1.6
8
P1.5
7
P1.4
6
P1.3
5
P1.2
4
P1.1
3
P1.0
2
P3.7/RD
19
P3.6/WR
18
P3.5/T1
17
P3.4/T0
16
P3.3/INT1
15
P3.2/INT0
14
P3.1/TXD
13
P3.0/RXD
11
VSS
22
XTL1
21
XTL2
20
RST
10
VCC
44
P0.7
36
P0.6
37
P0.5
38
P0.4
39
P0.3
40
P0.2
41
P0.1
42
P0.0
43
EA
35
ALE
33
PSEN
32
P2.7
31
P2.6
30
P2.5
29
P2.4
28
P2.3
27
P2.2
26
P2.1
25
P2.0
24
C840
47N
C810
10N
R848
470
Q840
BC857
Q850
BC848
R815
47K
R819
4K7
C812
100P
R818
4K7
R816
150K
R865
2K7
C832
1U0
R867
820K
C833
22N
C814
1N0
R853
470
P840
I/OPAD
BAV70
D880
2
3
BAV70
D880
1
3
D820
BAT65
D820A
SOD-323
+5VDIG
+9V
+5VDIG
+5VDIG
MCU-CLOCK
7A6
SYNTH
7A2
SCK
6B6
7A2
AUDIO-1
1R3
2R9
2R9
3R4
MUTE
2R0
LOCK-DETECT
7R5
LED
2A0
+5V
SERIAL-COM
1R4
+5V
6B4
7A5
+9V
2A8
3R8
4A8
5B7
6B3
7A5
+5V
+9V
SDA
7A2
RX-DISABLE
2A4
GND
1R0
1R0
2A7
3A1
4A7
5A5
6B1
7A4
9C6
+5VDIG
RESET
6B5
DGND
6B0
+5VDIG
6B4
+5VDIG
+4V2
+9V
+4V2
+9V
+9V+4V2
+4V2
+5VDIG
SPEECH
2R8
+9V
WATCHDOG
6B6
+5VDIG
+9V
NOT-RESET
6B6
7A2
+5VDIG
+5VDIG
LOCK-DETECT
AB24_2
LOCK-DETECT AB24_2
MICROMATCH
CHANNEL SELECT TO MICRO BUS
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
6B2
6B4
6B4
12.8MHz
0V
5V
5V
4V2
4V2
4V2
4V2
3V8
D-RANGE2
1
2
3
4
5
6
7
11
NC
15
14
13
10
12
9
8
PIN PIN
MICROMATCH TO D-RANGE2 CONNECTIONS
WHEN DETECTING TONE3V7
VARIANT
DEVICES
CH-SLCT-0
CH-SLCT-1
CH-SLCT-2
CH-SLCT-3
CH-SLCT-4
CH-SLCT-5
CH-SLCT-6
CH-SLCT-7
CH-SLCT-2
CH-SLCT-3
CH-SLCT-4
CH-SLCT-5
CH-SLCT-6
CH-SLCT-7
CH-SLCT-1
CH-SLCT-0
RESET
MCU-CLOCK
SERIAL_COM-1
CTCSS_MSB
CTCSS_LSB
CTCSS_RX
SYNTH_LOCK_DETECT
CTCSS_ENABLE
SYNS
LED_FLASH
SCK
WATCHDOG
SDA
DCS_INPUT
MUTE_OUT
MUTE_OUT
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