Circuit Descriptions - Sharp AR-121E Service Manual

AL-1000/1010

2. Circuit descriptions

A. Maiin PWB (MCU)
(1) CPU signal table
CPU pin table
Model without SPF
PIN No Signal code
1 /CS1
2 /CS0
3
4
5
6 A0
7 A1
8 A2
9 A3
10
11 A4
12 A5
13 A6
14 A7
15 A8
16 A9
17 A10
18 A11
19
20 A12
21 A13
22 A14
23 A15
24 A16
25 A17
26 A18
27 A19
28
29 A20
30
31
32
33 (MHPS)
34 /CPUSYNC
35
36
37 ZC
38 /ASICINT
39
40 D0
41 D1
42 D2
43 D3
44
Input/output
Output
Output
Output
Output
Output
Output
Output
Output
Output
Output
Output
Output
Output
Output
Output
Output
Output
Output
Output
Output
Output
Output
Output
Output
Output
(Interruption input)
Interruption level input
Interruption level input
Interruption level input
Interruption level input
Data input/output
Data input/output
Data input/output
Data input/output
12-3
Operating
Chip Select for SRAM
Chip Select for EPROM
D-GND
D-GND
5V
Address Bus (NC-pull up)
Address Bus
Address Bus
Address Bus
D-GND
Address Bus
Address Bus
Address Bus
Address Bus
Address Bus
Address Bus
Address Bus
Address Bus
D-GND
Address Bus
Address Bus
Address Bus
Address Bus
Address Bus
Address Bus (for 2Mbit EPROM) - (NC)
Address Bus (NC-pull up)
Address Bus (NC-pull up)
D-GND
Address Bus (NC-pull up)
NC-pull up
NC-pull up
NC-pull up
Mirror Home Position Sensor
Horizontal Synchronous (from G/A)
D-GND
D-GND
Zero-cross signal
Intterupt from G/A
5V
Data Bus
Data Bus
Data Bus
Data Bus
D-GND