Collection of Product FAQs
Author: Kano Tomoo
Date: 98/11/12 (Thursday) 10:17 (modified: 99/01/22 (Friday))
<Information Level>
A:
Public (Printing O.K.)
D: Technical terms
Index:
<Product>
Division name: 01 IC
Category 1:
12 Memory
Category 2:
Cal No.:
2. Serial EEPROM
S-93C46A/56A/66A
Related documents:
Question:
What about the basic term (start bit)?
Answer:
Start bit
→serial 3-wire bus EEPROM (a 2-wire bus type is used for the start condition)
When a command is issued the 3-wire bus EEPROM must obtain “1” from a DI input in order to
recognize this command (this is a rule).
Address
Operation
code
Command
READ(Data read)
Data
Start bit
S-29L130A S-29L220A S-29L330A
1
1
1
1
1
10
01
11
00
00
A5-A0
A5-A0
A5-A0
XA6-A0
XA6-A0
XA6-A0
A7-A0 D15-D0 Output*
A7-A0 D15-D0 Input
WRITE(Data write)
ERASE(Data erase)
EWEN(Program enable)
EWDS(Program disable)
A7-A0
-
-
-
11xxxx 11xxxxxx 11xxxxxx
00xxxx 00xxxxxx 00xxxxxx
<Remarks>
FAQ No.: 12015
24
SII [ SEIKO INSTRUMENTS INC ]
