Samsung SRP-350PG - SRP 350 B/W Direct Thermal Printer Service Manual page 48

6-1 Semiconductor Base Diagram
6-1-2 Memorys
SRAM KM681000
Pin Function
1 N.C
2 Address 16
3 Address 14
4 Address 12
5 Address 7
6 Address 6
7 Address 5
8 Address 4
9 Address 3
10 Address 2
11 Address 1
12 Address 0
13 Data 0
14 Data 1
15 Data 2
16 GND
Samsung Electro-Mechanics
SRAM
KM681000
Pin Function Pin
32 VCC 1
31 Address 15 2
30 CS2 3
29 /WE 4
28 Address 13 5
27 Address 8 6
26 Address 9 7
25 Address 11 8
24 /OE 9
23 Address 10 10
22 /CS1 11
21 Data 7 12
20 Data 6 13
19 Data 5 14
18 Data 4 15
17 Data 3 16
FLASH RAM AM29F800
Function Pin
Address 15 17 Address 17
Address 14 18 Address 7
Address 13 19 Address 6
Address 12 20 Address 5
Address 11 21 Address 4
Address 10 22 Address 3
Address 9 23 Address 2
Address 8 24 Address 1
N.C 25 Address 0
N.C 26 /CE
/WE 27 VSS
/RESET 28 /OE
N.C 29 Data 0
N.C 30 Data 8
/RY/BY 31 Data 1
Address 18 32 Data 9
6 Reference Information
FLASH RAM
AM29F800
Function Pin
33 Data 2
34 Data 10
35 Data 3
36 Data 11
37 VCC
38 Data 4
39 Data 12
40 Data 5
41 Data 13
42 Data 6
43 Data 14
44 Data 7
45 Data 15
46 VSS
47 /BYTE
48 Address 16
Function
6-3