B-5
Start/Stop
Logic
Word Address Buffers
Control Logic
Dout ACK
(Open drain)
XDEC
Column Decorders
E2PROM
(256 512)
256
512
Sense Amps
Shift Registers
Data In Storage
High Voltage
&
Timing Control
State Counters
5
7
6
1
2
3
SDA
WP
SCL
Vcc
Vss
8
4
NC
NC
NC
IC705 CAT24WC128J / 24LC128T-I/SN
PCB-MAIN(8/8)
INPUTS
OUTPUT
Y
FUNCTION TABLE
(each gate)
A
B
L
H
H
H
H
H
H
H
L
L
L
L
H
L
H
L
: HIGH LEVEL
: LOW LEVEL
1
1A
2
1B
3
1Y
4
2A
5
2B
6
2Y
7
GND
13
12
11
10
9
8
14
4B
4A
4Y
3B
3A
3Y
VCC
IC7A3 MM74HCT32MTC / TC74VHCT32AFT
HOLD
S
W
Control Logic
High Voltage
Generator
I/O Shift Register
Address Register
and Counter
256 Byte
Data Buffer
256 Bytes (Page Size)
X Decoder
Y Decoder
C
7
3
1
6
5
2
D
Q
4
Vss
8
Vcc
Status
Register
00000h
10000h
20000h
30000h
3FFFFh
000FFh
Size of the
read-only
memory area
IC703 M25P20-VMN6