Motorola Commercial Series Service Information page 26

3-10
IC Designator
U401
Microprocessor
Pin Pin Function
10 PB1_ADDR9
11 PB2_ADDR10
12 VDD
13 VSS
14 PBO_ADDR8
15 PB5_ADDR13
16 PG1_XA14
17 PG4_XA17
18 PG5_XA18
19 PG3_XA16
20 PG2_XA15
21 PB4_ADDR12
22 PF7_ADDR7
23 PF6_ADDR6
24 PF5_ADDR5
25 PF4_ADDR4
26 PF3_ADDR3
27 PF2_ADDR2
28 PF1_ADDR1
29 PFO_ADDR0
30 PC0_DATA0
31 PC1_DATA1
32 PC2_DATA2
33 PC3_DATA3
34 PC4_DATA4
35 PC5_DATA5
36 PC6_DATA6
37 PC7_DATA7
38 PH7_CSPROG
39 VDDL
40 VSSL
41 PH6_CSGP2
42 PH5_CSGP1
43 PH4_CSIO
44 PH3_PW4
45 PH2_PW3
TROUBLESHOOTING TABLES
DC Voltage Comments (Condition)
3.05
0.16
3.23
GND
3.05
0.13
0.20
3.17
0
3.21
0.30
0.22
3.03
3.08
3.06
0.16
0.26
3.06
3.06
3.05
0.69
0.96
1.10
0.81
0.62
0.68
0.67
0.73
3.05
3.23
GND
3.23
3.23
0
3.21 On/off control output
0