Pioneer PRO-720HD Service Manual page 47

24LC128(I)P (DIGITAL CONV. ASSY : IC1410)
• 128Kbit CMOS Serial EEPROM
Pin Assignment (Top view)
1 8
A0
2 7
A1
3 6
A2
VSS 4 5
Pin Function
No. Pin Name Pin Function
1 A0
User configurable
2 A1
chip selects
3 A2
4 VSS Ground
5 SDA Serial Data
6 SCL Serial clock
7 WP Write protect input
8 VCC +2.5V to 5.5V power supply
24LC08B(I)P (DIGITAL CONV. ASSY : IC1656)
• 8Kbit CMOS Serial EEPROM
Pin Assignment (Top view)
1 8
A0 VCC
2 7
A1 WP
3 6
A2 SCL
VSS SDA
4 5
Pin Function
No. Pin Name Pin Function
1 A0
2 A1 No internal connection
3 A2
4 VSS Ground
5 SDA Serial Address/Data I/O
6 SCL Serial clock
7 WP Write protect input
8 VCC +2.5V to 5.5V power supply
Block Diagram
VCC
WP
SCL
SDA
SCL
6
SDA
5
VCC
8
VSS 4
Block Diagram
SDA
5
SCL
6
VCC
8
VSS
4
PRO-720HD, PRO-620HD, PRO-520HD
A0 A1 A2 WP
1 2 3 7
I/O
MEMORY
CONTROL
CONTROL
LOGIC
LOGIC
I/O
WP
7
I/O MEMORY
CONTROL CONTROL
LOGIC LOGIC
HV GENERATOR
EEPROM
XDEC
ARRAY
PAGE LATCHES
YDEC
SENSE AMP
R/W CONTROL
HV GENERATOR
EEPROM
ARRAY
XDEC
(2X256X8) or
(4X256X8)
PAGE LATCHES
YDEC
SENSE AMP
R/W CONTROL
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