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參數資料
| 型號： | FM1808 |
| 廠商： | Electronic Theatre Controls, Inc. |
| 元件分類： | DRAM |
| 英文描述： | 4Kb FRAM Serial 3V Memory |
| 中文描述： | 4Kb的鐵電串行3V的記憶 |
| 文件頁數： | 2/12頁 |
| 文件大小： | 89K |
| 代理商： | FM1808 |
Ramtron
FM1808-70
27 July 2000
2/12
Figure 1. Block Diagram
Pin Description
Pin Name
A0-A14
Pin Number
1-10, 21, 23-26
I/O
I
Pin Description
Address. The 15 address lines select one of 32,768 bytes in the FRAM
array. The address value will be latched on the falling edge of /CE.
Data. 8-bit bi-directional data bus for accessing the FRAM array.
Chip Enable. /CE selects the device when low. The falling edge of /CE
causes the address to be latched internally. Address changes that
occur after /CE goes low will be ignored until the next falling edge
occurs.
Output Enable. When /OE is low the FM1808 drives the data bus when
valid data is available. Taking /OE high causes the DQ pins to be tri-
stated.
Write Enable. Taking /WE low causes the FM1808 to write the contents
of the data bus to the address location latched by the falling edge of
/CE.
Supply Voltage. 5V
Ground.
DQ0-7
/CE
11-13, 15-19
20
I/O
I
/OE
22
I
/WE
27
I
VDD
VSS
28
14
I
I
Functional Truth Table
/CE
H
L
L
/WE
X
X
H
L
/OE
X
X
L
X
Function
Standby/Precharge
Latch Address
Read
Write
Address
Latch
A0-A14
CE
Control
Logic
WE
Row
Decoder
Block Decoder
Column Decoder
1Kx8
1Kx8
1Kx8
1Kx8
1Kx8
1Kx8
1Kx8
1Kx8
1Kx8
1Kx8
1Kx8
1Kx8
1Kx8
1Kx8
1Kx8
1Kx8
1Kx8
1Kx8
1Kx8
1Kx8
1Kx8
1Kx8
1Kx8
1Kx8
1Kx8
1Kx8
1Kx8
1Kx8
1Kx8
1Kx8
1Kx8
1Kx8
A0-A7
A8-A9
A10-A14
I/O Latch
Bus Driver
OE
DQ0-7
相關PDF資料 |
PDF描述 |
|---|---|
| FM1808-120-P | 4Kb FRAM Serial 3V Memory |
| FM1808-70-P | 4Kb FRAM Serial 3V Memory |
| FM1808-70-S | 4Kb FRAM Serial 3V Memory |
| FM200TU-07A | HIGH POWER SWITCHING USE INSULATED PACKAGE |
| FM200TU-2A | HIGH POWER SWITCHING USE INSULATED PACKAGE |
相關代理商/技術參數 |
參數描述 |
|---|---|
| FM1808-120-P | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:256Kb Bytewide FRAM Memory |
| FM1808-120-S | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:256Kb Bytewide FRAM Memory |
| FM1808-70-P | 功能描述:F-RAM 256K (32Kx8) 70ns 5V RoHS:否 存儲容量:512 Kbit 組織:64 K x 8 接口:SPI 工作電源電壓:2 V to 3.6 V 工作溫度范圍:- 40 C to + 85 C 安裝風格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Tube 制造商:Cypress Semiconductor |
| FM1808-70-PG | 功能描述:F-RAM 256K (32Kx8) 70ns 5V RoHS:否 存儲容量:512 Kbit 組織:64 K x 8 接口:SPI 工作電源電壓:2 V to 3.6 V 工作溫度范圍:- 40 C to + 85 C 安裝風格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Tube 制造商:Cypress Semiconductor |
| FM1808-70-PG | 制造商:Ramtron International Corporation 功能描述:Nonvolatile SRAM Memory IC Memory Type:F |
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