CMOS SERIAL E2PROM
S-93C46A/56A/66A
n
Block Diagram
VCC
Address
decoder
Memory array
GND
Data register
Output buffer
DO
DI
Mode decode logic
CS
SK
Clock generator
Figure 2
n
Instruction Set
Table 2
Start
Bit
Op
Address
Instruction
Data
Code
S-93C46A S-93C56A S-93C66A
A5 to A0
A5 to A0
A5 to A0
01xxxx
10xxxx
11xxxx
00xxxx
XA6 to A0
XA6 to A0
XA6 to A0
01xxxxxx
10xxxxxx
11xxxxxx
00xxxxxx
A7 to A0
A7 to A0
READ
(Read data)
1
1
1
1
1
1
1
10
01
11
00
00
00
00
D15 to D0 Output*1
WRITE (Write data)
ERASE (Erase data)
WRAL (Write all)*2
D15 to D0 Input
A7 to A0
¾
01xxxxxx
10xxxxxx
11xxxxxx
00xxxxxx
D15 to D0 Input
ERAL
(Erase all)*2
¾
¾
¾
EWEN (Program enable)
EWDS (Program disable)
Doesn’t matter.
x :
*1 :
*2 :
Addresses are continuously incremented.
Valid only at Vcc = 2.5 V to 5.5 V.
n
Absolute Maximum Ratings
Table 3
Parameter
Symbol
Ratings
Unit
Power supply voltage
VCC
VIN
-0.3 to +7.0
-0.3 to VCC+0.3
-0.3 to VCC
V
V
Input voltage
Output voltage
VOUT
Tbias
Tstg
V
Storage temperature under bias
Storage temperature
-50 to +95
°C
°C
-65 to +150
Seiko Instruments Inc.
2
SII [ SEIKO INSTRUMENTS INC ]
