Service manual

MD-MT831H/W
– 40 –
Pin No.
Terminal Name
Function
1 Vcc Power supply (2.6V)
2 DQ1 Data input/data output
3 DQ2 Data input/data output
4 WE Write enable
5 RAS Low address strobe
6 NC Not connected
7 A10 Address input
8-11 A0-A3 Address input
12 Vcc Power supply (2.6V)
13 Vss Ground (0V)
14-19 A4-A9 Address input
20 OE Output enable
21 CAS Column address strobe
22 DQ3 Data input/data output
23 DQ4 Data input/data output
24 Vss Ground (0V)
IC202 RH-iX2824AFZZ: 16 Bit D-RAM (IX2824AF)
FUNCTION TABLE OF IC
Pin No.
Terminal Name
Function
1-3 A0-A2 Device address
4 VSS Ground
5 SDA Serial data input/output
6 SCL Serial clock input
7 WP Write protect
8 VCC Power supply
IC402 VHi58X2404T-1: EEPROM (58X2404T)
1
2
3
4
5
6
7
8
9
10
11
12
24
23
22
21
20
19
18
17
16
15
14
13
Vcc
DQ1
DQ2
WE
RAS
NC
A10
A0
A1
A2
A3
Vcc
A8
A7
A6
A5
A4
Vcc
Vss
DQ4
DQ3
CAS
OE
A9
IC202 RH-iX2824AFZZ: 16 Bit D-RAM (IX2824AF)
Figure 40 BLOCK DIAGRAM OF IC