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參數(shù)資料
| 型號： | S-29190A |
| 廠商： | Seiko Instruments Inc. |
| 英文描述： | 64-Word x 16-Bit CMOS Serial EEPROM(1K位CMOS串行EEPROM) |
| 中文描述： | 64字× 16位的CMOS串行EEPROM（每1000位的CMOS串行EEPROM的） |
| 文件頁數(shù)： | 8/44頁 |
| 文件大小： | 208K |
| 代理商： | S-29190A |
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CMOS SERIAL E
2
PROM
S-29X90A Series
Seiko Instruments Inc.
7
2.
Write (PROGRAM ,WRAL, ERAL)
The write instructions (PROGRAM, WRAL, ERAL) automatically begins writing to the non-volatile memory when CS
goes low at the completion of the specified clock input.
The write operation is completed in 10 ms (t
PR
Max.), and the typical write period is less than 5 ms. In the S-29X90A
Series, it is easy to VERIFY the completion of the write operation in order to minimize the write cycle by setting CS to
high and checking the DO pin, which is low during the write operation and high after its completion. This VERIFY
procedure can be executed over and over again. There are two methods to detect a change in the DO output. One is
to detect a change from low to high setting CS to high, and the other is to detect a change from low to high as a result
of repetitous operations of returning the CS to low after setting CS to high and checking the DO output.
Because all SK and DI inputs are ignored during the write operation, any input of instruction will also be disregarded.
When DO outputs high after completion of the write operation or if it is in the high-impedance state (Hi-Z), the input of
instructions is available. Even if the DO pin remains high, it will enter the high-impedance state upon the recognition of
a high of DI (start-bit) attached to the rising edge of an SK pulse.
DI input should be low during the VERIFY procedure.
2.1 PROGRAM
This instruction writes 16-bit data to a specified address.
After changing CS to high, input a start-bit, op-code (PROGRAM), address, and 16-bit data. If there is a data overflow
of more than 16 bits, only the last 16-bits of the data is considered valid. Changing CS to low will start the PROGRAM
operation. It is not necessary to make the data "1" before initiating the PROGRAM operation.
t
CDS
X
11
32
t
PR
busy
ready
D15
Hi-Z
t
SV
16
Hi-Z
17
10
9
8
7
6
5
3
2
1
SK
DI
DO
A0
D0
4
t
HZ1
0
A5
A6*
A7*
X
0
X
X
1
ready
CS
VERIFY
Figure 6 WRITE Timing (S-29390A)
*
On the S-29190A, A
7
and A
6
are optional.
On the S-29290A, A
7
is optional.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| S-29290A | 128-Word x 16-Bit CMOS Serial EEPROM(2K位CMOS串行EEPROM) |
| S-29430 | The CAT24FC02 is a 2-kb Serial CMOS EEPROM internally organized as 256 words of 8 bits each |
| S-29430ADP | The CAT24FC02 is a 2-kb Serial CMOS EEPROM internally organized as 256 words of 8 bits each |
| S-29430AFE | The CAT24FC02 is a 2-kb Serial CMOS EEPROM internally organized as 256 words of 8 bits each |
| S-29430A | The CAT24FC02 is a 2-kb Serial CMOS EEPROM internally organized as 256 words of 8 bits each |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| S-29190ADP | 制造商:SII 制造商全稱:Seiko Instruments Inc 功能描述:CMOS SERIAL EEPROM |
| S-29190AFJ | 制造商:SII 制造商全稱:Seiko Instruments Inc 功能描述:CMOS SERIAL EEPROM |
| S-29191A | 制造商:SII 制造商全稱:Seiko Instruments Inc 功能描述:CMOS SERIAL EEPROM |
| S-29191ADP | 制造商:SII 制造商全稱:Seiko Instruments Inc 功能描述:CMOS SERIAL EEPROM |
| S-29191AFJ | 制造商:SII 制造商全稱:Seiko Instruments Inc 功能描述:CMOS SERIAL EEPROM |
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