Sanyo DVD-SL25 Service Manual page 29

IC BLOCK DIAGRAM & DESCRIPTION
IC818 LE28DW8163T-70T-MPB(8 bit Flash)
1
A15
2
A14
3
A13
4
A12
5
A11
6
A10
7
A9
8
A8
9
NC
10
NC
11
WE#
12
RESET#
13
NC
14
WP#
15
RY/BY#
16
A18
17
A17
18
A7
19
A6
20
A5
21
A4
22
A3
23
A2
24
A1
Symbols
A18,A17
A16-A0,A-1
A18-A15
A18-A10
DQ15-DQ0
CE#
OE#
WE#
BYTE#
RY/BY#
WP#
RESET#
VDD
VSS
48
A16
47
BYTE#
CHARGE PUMP
46
VSS
&
45
DQ15/A-1
VOLTAGE
44
DQ7
REFERENCE
43
DQ14
CIRCUIT
42
DQ6
41 DQ13
40
DQ5
ADDRESS BUFFER
39
DQ12
38
DQ4
LATCH CIRCUIT
37
VDD
36
DQ11
35
DQ3
34
DQ10 A18-A0,A-1
33
DQ2
CE#
32
DQ9
OE#
31
DQ1
WE#
30
DQ8
WP#
29
DQ0
RY/BY#
28 OE#
RESET#
27
VSS
BYTE#
26
CE#
25
AD
Pin Name
Bank Selective Address
Flush Bank Address
Flush Bank Block Address
Flush Bank Sector Sddress
Data Input/Output
Chip Enable
Output Enable
Write Enable
Bait Pin
Ladey/Beje Output
Write Protect
Reset
Power Supply
Ground
COLUMN DECODER
& LOW DECODER
CONTROL LOGIC
Functions
Selects bank 1 when "L" and bank 2.
Sapply address for flush bank.
Select flush bank for erease.
Select flush bank sector for erease.
To output data during read cycle and receive input data during write
cycles. Data is internaliy latched during a writecycle. The output are
high inpedance when OE#,CE# is "H".
To activate the flush bank when CE# is "L".
To activate the data output buffer .
To control the write, erease and program.
Bait mode when "L" and word mode when "H".
Output "L" when write and ezcept "H".
To activate hardware write protect when "L".
To activate hardware reset when "L".
2.7V~3.6V supply.
- 28 -
128Kx16
or
256Kx8
FLUSH
BANK2
DQ15-DQ0
IN/OUTPUT BUFFER
&
DATA LATCH
384Kx16
or
788Kx8
FLUSH
BANK1