Read Sharp AL-1622 (serv.man16) Service Manual online
AL-1611/AL-1622
ELECTRICAL SECTION
13 – 2
2. MCU
A. BLOCK DIAGRAM (MCU)
B. CPU (HD6412351IF)
(1) pin/signal table
AL-1622
only
only
CRUM
UNIT
UNIT
Pin No.
Pin name
Signal name
I/O
Function
Purpose
Descriptions
1
/CS1
/CS1
OUT
Area 1 chip select
SRAM chip select
L: Select
2
/CS0
/CS0
OUT
Area 0 chip select
Flash ROM chip select
L: Select
3
VSS
POW
Ground pin
4
VSS
POW
Ground pin
5
VCC
POW
Power pin
6
A0
A0
OUT
Address bus 0
System bus
7
A1
A1
OUT
Address bus 1
System bus
8
A2
A2
OUT
Address bus 2
System bus
9
A3
A3
OUT
Address bus 3
System bus
10
VSS
POW
Ground pin
11
A4
A4
OUT
Address bus 4
System bus
12
A5
A5
OUT
Address bus 5
System bus
13
A6
A6
OUT
Address bus 6
System bus
14
A7
A7
OUT
Address bus 7
System bus
15
A8
A8
OUT
Address bus 8
System bus
16
A9
A9
OUT
Address bus 9
System bus
17
A10
A10
OUT
Address bus 10
System bus
18
A11
A11
OUT
Address bus 11
System bus
19
VSS
POW
Ground pin
20
A12
A12
OUT
Address bus 12
System bus
21
A13
A13
OUT
Address bus 13
System bus
(Pin descriptions) IN: Input pin
OUT: Output pin
BIDIR: Bi-directional pin
ODN: Open drain output pin
TR1: 3-state output pin
POW: Power pin
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