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參數(shù)資料
| 型號： | AT49F002-12JC |
| 廠商： | ATMEL CORP |
| 元件分類： | DRAM |
| 英文描述： | 2-Megabit 256K x 8 5-volt Only Flash Memory |
| 中文描述： | 256K X 8 FLASH 5V PROM, 120 ns, PQCC32 |
| 封裝： | PLASTIC, MS-016AE, LCC-32 |
| 文件頁數(shù)： | 3/20頁 |
| 文件大?。?/td> | 213K |
| 代理商： | AT49F002-12JC |
3
3354F–FLASH–2/05
AT49F002A(N)(T)
3.
Block Diagram
4.
Device Operation
4.1
Read
The AT49F002A(N)(T) is accessed like an EPROM. When CE and OE are low and WE is high,
the data stored at the memory location determined by the address pins is asserted on the out-
puts. The outputs are put in the high impedance state whenever CE or OE is high. This dual-line
control gives designers flexibility in preventing bus contention.
4.2
Command Sequences
When the device is first powered on, it will be reset to the read or standby mode depending upon
the state of the control line inputs. In order to perform other device functions, a series of com-
mand sequences are entered into the device. The command sequences are shown in the
Command Definitions table. The command sequences are written by applying a low pulse on the
WE or CE input with CE or WE low (respectively) and OE high. The address is latched on the
falling edge of CE or WE, whichever occurs last. The data is latched by the first rising edge of
CE or WE. Standard microprocessor write timings are used. The address locations used in the
command sequences are not affected by entering the command sequences.
CONTROL
LOGIC
Y DECODER
PARAMETER
BLOCK 1
(8K BYTES)
BOOT BLOCK
(16K BYTES)
OE
WE
CE
RESET
ADDRESS
INPUTS
VCC
GND
AT49F002A(N)
DATA INPUTS/OUTPUTS
I/O7 - I/O0
8
X DECODER
PARAMETER
BLOCK 2
(8K BYTES)
MAIN MEMORY
BLOCK 1
(32K BYTES)
MAIN MEMORY
BLOCK 2
(64K BYTES)
MAIN MEMORY
BLOCK 3
(64K BYTES)
MAIN MEMORY
BLOCK 4
(64K BYTES)
PROGRAM
DATA LATCHES
Y-GATING
INPUT/OUTPUT
BUFFERS
1FFFF
10000
0FFFF
08000
07FFF
3FFFF
30000
2FFFF
20000
06000
05FFF
04000
03FFF
00000
PARAMETER
BLOCK 1
(8K BYTES)
BOOT BLOCK
(16K BYTES)
AT49F002A(N)T
DATA INPUTS/OUTPUTS
I/O7 - I/O0
8
PARAMETER
BLOCK 2
(8K BYTES)
MAIN MEMORY
BLOCK 1
(32K BYTES)
MAIN MEMORY
BLOCK 2
(64K BYTES)
PROGRAM
DATA LATCHES
Y-GATING
INPUT/OUTPUT
BUFFERS
3FFFF
3C000
3BFFF
3A000
39FFF
38000
37FFF
30000
2FFFF
20000
MAIN MEMORY
BLOCK 3
(64K BYTES)
MAIN MEMORY
BLOCK 4
(64K BYTES)
10000
0FFFF
00000
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| AT49F002-12JI | LM4809 Boomer ® Audio Power Amplifier Series Dual 105mW Headphone Amplifier with Active-Low Shutdown Mode; Package: SOIC NARROW; No of Pins: 8 |
| AT49F002-12PC | 2-Megabit 256K x 8 5-volt Only Flash Memory |
| AT49F002-12PI | LM4809 Boomer ® Audio Power Amplifier Series Dual 105mW Headphone Amplifier with Active-Low Shutdown Mode; Package: MINI SOIC; No of Pins: 8 |
| AT49F002-12TC | 2-Megabit 256K x 8 5-volt Only Flash Memory |
| AT49F002-12TI | LM4810 Boomer ® Audio Power Amplifier Series Dual 105mW Headphone Amplifier with Active-High Shutdown Mode; Package: LLP; No of Pins: 8 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AT49F002-12JI | 功能描述:IC FLASH 2MBIT 120NS 32PLCC RoHS:否 類別:集成電路 (IC) >> 存儲器 系列:- 標準包裝:378 系列:- 格式 - 存儲器:閃存 存儲器類型:FLASH 存儲容量:8M（1M x 8，512K x 16） 速度:110ns 接口:并聯(lián) 電源電壓:2.7 V ~ 3.6 V 工作溫度:-40°C ~ 85°C 封裝/外殼:48-CBGA 供應商設備封裝:48-CBGA（7x7） 包裝:托盤 |
| AT49F002-12PC | 功能描述:IC FLASH 2MBIT 120NS 32DIP RoHS:否 類別:集成電路 (IC) >> 存儲器 系列:- 標準包裝:378 系列:- 格式 - 存儲器:閃存 存儲器類型:FLASH 存儲容量:8M（1M x 8，512K x 16） 速度:110ns 接口:并聯(lián) 電源電壓:2.7 V ~ 3.6 V 工作溫度:-40°C ~ 85°C 封裝/外殼:48-CBGA 供應商設備封裝:48-CBGA（7x7） 包裝:托盤 |
| AT49F002-12PI | 功能描述:IC FLASH 2MBIT 120NS 32DIP RoHS:否 類別:集成電路 (IC) >> 存儲器 系列:- 標準包裝:378 系列:- 格式 - 存儲器:閃存 存儲器類型:FLASH 存儲容量:8M（1M x 8，512K x 16） 速度:110ns 接口:并聯(lián) 電源電壓:2.7 V ~ 3.6 V 工作溫度:-40°C ~ 85°C 封裝/外殼:48-CBGA 供應商設備封裝:48-CBGA（7x7） 包裝:托盤 |
| AT49F002-12TC | 功能描述:IC FLASH 2MBIT 120NS 32TSOP RoHS:否 類別:集成電路 (IC) >> 存儲器 系列:- 標準包裝:378 系列:- 格式 - 存儲器:閃存 存儲器類型:FLASH 存儲容量:8M（1M x 8，512K x 16） 速度:110ns 接口:并聯(lián) 電源電壓:2.7 V ~ 3.6 V 工作溫度:-40°C ~ 85°C 封裝/外殼:48-CBGA 供應商設備封裝:48-CBGA（7x7） 包裝:托盤 |
| AT49F002-12TI | 功能描述:IC FLASH 2MBIT 120NS 32TSOP RoHS:否 類別:集成電路 (IC) >> 存儲器 系列:- 標準包裝:378 系列:- 格式 - 存儲器:閃存 存儲器類型:FLASH 存儲容量:8M（1M x 8，512K x 16） 速度:110ns 接口:并聯(lián) 電源電壓:2.7 V ~ 3.6 V 工作溫度:-40°C ~ 85°C 封裝/外殼:48-CBGA 供應商設備封裝:48-CBGA（7x7） 包裝:托盤 |
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