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Description of major ICs
AK93C65AF-X (IC451) : EEPROM
1.Pin layout
PE
1
VCC
2
CS
3
SK
4
8 PIN SOP
2.Block diagram
INSTRUCTION
DI
REGISTER
CS
SK
PE
3.Pin function
Pin no.
Symbol
1
PE
2
VCC
3
CS
4
SK
5
DI
6
DO
7
GND
8
NC
NOTE : The pull-up resistor of the PE pin is about 2.5M
8
NC
7
GND
DO
6
DI
5
DATA
REGISTER
INSTRUCTION
DECODE,
CONTROL
AND
CLOCK
GENERATION
BUFFERS
Function
Program enable (With built-in pull-up resistor)
Power supply
Chip selection
Cereal clock input
Cereal data input
Cereal data output
Ground
No connection
16
R/W AMPS
AND
AUTO ERASE
ADD.
DECODER
VPP SW
VREF
GENERATOR
(VCC=5V)
DO
16
EEPROM
4096bit
256 x 16
VPP
UX-A10DVD
1-49
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