Sharp CD-SW250DVD Service Manual page 99

IC3203 VHiM24C04WMN-:4K Bit EEPROM (M24C04)
Pin No. Terminal name
1,2,3, E0,E1,E2
5 SDA
6 SCL
7 WC
8 VCC
4 VSS
IC3206 VHiiC42S16400:64M SD-RAM (IC42S16400)
Pin No. Terminal name
38 CLK
37 CKE
19 CS
18 RAS
17 CAS
16 WE
2,4,5,7,8, DQ0>DQ15
10,11,13,
42,44,45,
47,48,
50,51,53
15 DQM
22,24,25, A0-11
26,29,30,
31,32,33,
34,35
20,21 BA0,1
1,14,27 VDD
3,9 VDDO
28,41,54 VSS
6,12,52 VSSQ
36*,40* NC
In this unit, the terminal with asterisk mark (*) is (open) terminal which
is not connected to the outside.
Function
Chip Enable
Serial ata D
Serial Clock
Write Control
Supply Voltage
Ground
Function
Master Clock
Clock Enable
Chip Select
Row Address Strobe
Column Address Strobe
Write Enable
Data I/O
DQ Mask Enable
Address Input
Bank Address
Power Supply
Power Supply for DQ
Ground
Ground for DQ
Not Connected
VDDQ
VSSQ
VDDQ
VSSQ
LDQM
8 – 13
CD-SW250DVD
M24C04
VCC
E0 1 8
2 7
E1
WC
E2 3 6 SCL
4 5 SDA
VSS
Figure 8-7 BLOCK DIAGRAM OF IC
VDD 1 54
DQO 2 53
3 52
DQ1 4 51
DQ2 5 50
6 49
DQ3 7 48
DQ4 8 47
9 46
DQ5 10 45
DQ6 11 44
12 43
DQ7 13 42
VDD 14 41
15 40
WE 16 39
CAS 17 38
RAS 18 37
CS 19 36
BA0 20 35
BA1 21 34
A10 22 33
A0 23 32
A1 24 31
A2 25 30
A3 26 29
VDD 27 28
Figure 8-8 BLOCK DIAGRAM OF IC
VSS
DQ15
VSSQ
DQ14
DQ13
VDDQ
DQ12
DQ11
VSSQ
DQ10
DQ9
VDDQ
DQ8
VSS
NC
UDQM
CLK
CKE
NC
A11
A9
A8
A7
A6
A5
A4
VSS