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参数资料
| 型号： | LE25CA322TT |
| 厂商： | SANYO SEMICONDUCTOR CO LTD |
| 元件分类： | PROM |
| 英文描述： | 4K X 8 SPI BUS SERIAL EEPROM, PDSO8 |
| 封装： | 0.150 INCH, MSOP-8 |
| 文件页数： | 4/14页 |
| 文件大小： | 217K |
| 代理商： | LE25CA322TT |
LE25CA322
No.NA1678-12/14
5. Write (WRITE)
The LE25CA322 enables pages with up to 32bytes to be written. Any number of bytes from 1 to 32bytes can be written
within the same sector page (page addresses : A15 to A7). “Figure 9 Write” shows the write timing waveforms, and
Figure 12 shows a write flowchart. After the falling CS edge, the command (02H) is input followed by the 16-bit
addresses (Add). The write data is then loaded until the rising CS edge, and the internal addresses (A4 to A0) are
incremented (Add+1) every time the data is loaded in 1-byte increments. The data loading continues until the rising CS
edge. If the data loaded has exceeded 32bytes, the 64bytes loaded last are written. The write data must be loaded in
1-byte increments, and the write operation is not performed at the rising CS edge occurring at any other timing. The
write time is 5ms (max.) when 32bytes (1page) are written at one time.
Figure 9 Write
Addresses A15 to A12 are “don’t care.”
6. Hold Function
Using HOLD pin, the hold function suspends serial communication (it places it in the hold status). “Figure 10 HOLD”
shows the timing waveforms. The device is placed in the hold status at the falling HOLD edge while the logic level of
SCK is low, and it exits from the hold status at the rising HOLD edge. When the logic level of SCK is high, HOLD must
not rise or fall. The hold function takes effect when the logic of CS is low, and the hold status is exited and serial
communication is reset at the rising CS edge. In the hold status, the SO output is in the high-impedance state, and SI
and SCK are “don’t care.”
Figure 10 HOLD
CS
HOLD
SCK
SO
Active
HOLD
tHS
tHH
tHLZ
tHH
tHHZ
High Impedance
7. Hardware Data Protection
In order to protect against unintentional writing at power-on, the LE25CA322 incorporates a power-on reset function.
CS
SCK
SI
SO
8CLK
High Impedance
Mode3
Mode0
0123
456
7
8
15 16
23 24
31 32
39 40
47
279
Self-timed
Write Cycle
tWC
02h
Add.
PD
(00000010)
(A15-A8)
(A7-A0)
(N)
(N+1)
(N+2)
(N+31)
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相关代理商/技术参数 |
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| LE25CB1282 | 制造商:SANYO 制造商全称:Sanyo Semicon Device 功能描述:EEPROM (SPI Bus) |
| LE25CB1282M | 制造商:SANYO 制造商全称:Sanyo Semicon Device 功能描述:Serial SPI EEPROM (SPI Bus)(128Kbit) |
| LE25CB5122M | 制造商:SANYO 制造商全称:Sanyo Semicon Device 功能描述:Serial SPI EEPROM (SPI Bus)(512Kbit) |
| LE25CB5122M-TLM-E | 制造商:Sony Semiconductor Solutions Division 功能描述: |
| LE25CB643M-TLM-E | 功能描述:电可擦除可编程只读存储器 RoHS:否 制造商:Atmel 存储容量:2 Kbit 组织:256 B x 8 数据保留:100 yr 最大时钟频率:1000 KHz 最大工作电流:6 uA 工作电源电压:1.7 V to 5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8 |
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