參數(shù)資料
型號： M29F400BB55MT3
廠商： NUMONYX
元件分類： PROM
英文描述： 256K X 16 FLASH 5V PROM, 55 ns, PDSO44
封裝： 0.500 INCH, PLASTIC, SOP-44
文件頁數(shù)： 5/40頁
文件大?。?/td> 316K
代理商： M29F400BB55MT3
M29F400BT, M29F400BB
Bus operations
3
Bus operations
There are five standard bus operations that control the device. These are Bus Read, Bus
Write, Output Disable, Standby and Automatic Standby. See Tables Table 2. and Table 3.,
Bus Operations, for a summary. Typically glitches of less than 5ns on Chip Enable or Write
Enable are ignored by the memory and do not affect bus operations.
3.1
Bus Read
Bus Read operations read from the memory cells, or specific registers in the Command
Interface. A valid Bus Read operation involves setting the desired address on the Address
Inputs, applying a Low signal, VIL, to Chip Enable and Output Enable and keeping Write
Enable High, VIH. The Data Inputs/Outputs will output the value, see Figure Figure 8., Read
Mode AC Waveforms, and Table Table 12., Read AC Characteristics, for details of when the
output becomes valid.
3.2
Bus Write
Bus Write operations write to the Command Interface. A valid Bus Write operation begins by
setting the desired address on the Address Inputs. The Address Inputs are latched by the
Command Interface on the falling edge of Chip Enable or Write Enable, whichever occurs
last. The Data Inputs/Outputs are latched by the Command Interface on the rising edge of
Chip Enable or Write Enable, whichever occurs first. Output Enable must remain High, VIH,
during the whole Bus Write operation. See Figures Figure 9. and Figure 10., Write AC
Waveforms, and Tables Table 13. and Table 14., Write AC Characteristics, for details of the
timing requirements.
3.3
Output Disable
The Data Inputs/Outputs are in the high impedance state when Output Enable is High, VIH.
3.4
Standby
When Chip Enable is High, VIH, the Data Inputs/Outputs pins are placed in the high-
impedance state and the Supply Current is reduced to the Standby level.
When Chip Enable is at VIH the Supply Current is reduced to the TTL Standby Supply
Current, ICC2. To further reduce the Supply Current to the CMOS Standby Supply Current,
ICC3, Chip Enable should be held within VCC ± 0.2V. For Standby current levels see Table
Table 11., DC Characteristics.
During program or erase operations the memory will continue to use the Program/Erase
Supply Current, ICC4, for Program or Erase operations until the operation completes.
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參數(shù)描述
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M29F400BB55N1T 功能描述:閃存 512Kx8 or 256Kx16 55 RoHS:否 制造商:ON Semiconductor 數(shù)據(jù)總線寬度:1 bit 存儲類型:Flash 存儲容量:2 MB 結(jié)構(gòu):256 K x 8 定時類型: 接口類型:SPI 訪問時間: 電源電壓-最大:3.6 V 電源電壓-最小:2.3 V 最大工作電流:15 mA 工作溫度:- 40 C to + 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體: 封裝:Reel
M29F400BB55N6E 功能描述:閃存 4 Mbit Sngl RoHS:否 制造商:ON Semiconductor 數(shù)據(jù)總線寬度:1 bit 存儲類型:Flash 存儲容量:2 MB 結(jié)構(gòu):256 K x 8 定時類型: 接口類型:SPI 訪問時間: 電源電壓-最大:3.6 V 電源電壓-最小:2.3 V 最大工作電流:15 mA 工作溫度:- 40 C to + 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體: 封裝:Reel
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M29F400BB70M1 功能描述:閃存 512Kx8 or 256Kx16 70 RoHS:否 制造商:ON Semiconductor 數(shù)據(jù)總線寬度:1 bit 存儲類型:Flash 存儲容量:2 MB 結(jié)構(gòu):256 K x 8 定時類型: 接口類型:SPI 訪問時間: 電源電壓-最大:3.6 V 電源電壓-最小:2.3 V 最大工作電流:15 mA 工作溫度:- 40 C to + 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體: 封裝:Reel
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