Collection of Product FAQs
Author: Kano Tomoo
Date: 98/11/12 (Thursday) 10:17 (modified: 99/01/13)
<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
Overall
Related documents:
Question:
What about the basic terms (verify, ready/busy function)?
Answer:
Verify, ready/busy (R/B) function
This is a function to find out about an actual write operation (time). There are two methods, a
“monitoring method based on the output condition of the DO pin” and a “method for monitoring the
output condition of the Ready/Busy pin.” This function eliminates the need to wait 10 ms for writing to be
completed, thereby minimizing the write time according to the performance of the IC (performance
value: 4 ms to 5 ms; 1 ms is ensured for the S-24C series).
tCDS
Standby
VERIFY
CS
SK
4
7
9
1
2
3
5
6
8
10
25
0
1
A5 A4 A3 A2 A1 A0 D15
Hi-Z
D0
1
DI
tSV
tHZ1
Hi-Z
busy
ready
DO
tPR
(Note) Note that this differs from a normal verify function, which checks written data for errors.
<Remarks>
FAQ No.: 12018
32
SII [ SEIKO INSTRUMENTS INC ]
