Collection of Product FAQs
Author: Kano Tomoo
Date: 98/11/12 (Thursday) 10:17 (modified: 99/01/13(Wednesday))
<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. (continuous read, sequential read)?
Answer:
-
Continuous read, sequential read
→S-93C series, S-29 series, S-24C series
Function by which data is read from a specified address using a read command, followed by the
output of the next address. This is useful when there is a large amount of user data (ex.: ID codes).
Continuos read
CS
SK
1
2
3
4
5
6
7
8
9
10
11
12
23
24
25 26
27
28
39
40
41 42
43
44
1
1
0
A5
A4
A3
A2
A1
A0
DI
Hi-Z
Hi-Z
DO
D15
D14 D13
0
D2
D1
D0 D15 D14
D13
D2
D1
D0 D15 D14
D13
-
Serial-port direct coupling, microcomputer interface, 8-bit command
→S-29x9xA, S-29x55A, S-2900A
The serial port is a serial I/O port provided for a microcomputer. A device that can be easily and
directly coupled to this port is referred to as a “serial-port direct-coupling type” or a “microcomputer
interface.”
1. The EEPROM is configured as follows for simple direct coupling:
Data is input at the rising edge of the SK input clock, and output at its falling edge.
Commands and data are input and output in 8 bits.
2. A microcomputer with a serial port communicates in 8 bits (8 clocks).
This configuration can substantially reduce the number of programs required for the microcomputer.
The advantages are easy programming and a reduced ROM capacity.
50
SII [ SEIKO INSTRUMENTS INC ]
