- 您现在的位置：买卖IC网 > PDF目录294084 > 7016S35PFGB (INTEGRATED DEVICE TECHNOLOGY INC) 16K X 9 DUAL-PORT SRAM, 35 ns, PQFP80 PDF资料下载
参数资料
| 型号： | 7016S35PFGB |
| 厂商： | INTEGRATED DEVICE TECHNOLOGY INC |
| 元件分类： | SRAM |
| 英文描述： | 16K X 9 DUAL-PORT SRAM, 35 ns, PQFP80 |
| 封装： | 14 X 14 MM, 1.40 MM HEIGHT, GREEN, TQFP-80 |
| 文件页数： | 11/20页 |
| 文件大小： | 164K |
| 代理商： | 7016S35PFGB |
6.42
IDT7016S/L
High-Speed 16K x 9 Dual-Port Static RAM
Military, Industrial and Commercial Temperature Ranges
19
semaphore flags. All eight semaphores could be used to divide the Dual-
Port RAM or other shared resources into eight parts. Semaphores can
even be assigned different meanings on different sides rather than being
given a common meaning as was shown in the example above.
Semaphores are a useful form of arbitration in systems like disk
interfaceswheretheCPUmustbelockedoutofasectionofmemoryduring
a transfer and the I/O device cannot tolerate any wait states. With the use
ofsemaphores,oncethetwodeviceshasdeterminedwhichmemoryarea
was“off-limits”totheCPU,boththeCPUandtheI/Odevicescouldaccess
their assigned portions of memory continuously without any wait states.
Semaphoresarealsousefulinapplicationswherenomemory“WAIT”
stateisavailableononeorbothsides.Onceasemaphorehandshakehas
been performed, both processors can access their assigned RAM
Figure 4. IDT7016 Semaphore Logic
D
3190 drw 20
0
D
Q
WRITE
D0
D
Q
WRITE
SEMAPHORE
REQUEST FLIP FLOP
SEMAPHORE
REQUEST FLIP FLOP
LPORT
RPORT
SEMAPHORE
READ
SEMAPHORE
READ
,
segments at full speed.
Another application is in the area of complex data structures. In this
case,blockarbitrationisveryimportant.Forthisapplicationoneprocessor
may be responsible for building and updating a data structure. The other
processor then reads and interprets that data structure. If the interpreting
processorreadsanincompletedatastructure,amajorerrorconditionmay
exist. Therefore, some sort of arbitration must be used between the two
differentprocessors.Thebuildingprocessorarbitratesfortheblock,locks
it and then is able to go in and update the data structure. When the update
is completed, the data structure block is released. This allows the
interpretingprocessortocomebackandreadthecompletedatastructure,
thereby guaranteeing a consistent data structure.
相关PDF资料 |
PDF描述 |
|---|---|
| 70219-920 | 8 CONTACT(S), FEMALE, RIGHT ANGLE TWO PART BOARD CONNECTOR, SOLDER |
| 70219-921LF | 20 CONTACT(S), FEMALE, RIGHT ANGLE TWO PART BOARD CONNECTOR, SOLDER |
| 70219-921 | 20 CONTACT(S), FEMALE, RIGHT ANGLE TWO PART BOARD CONNECTOR, SOLDER |
| 70219-922LF | 9 CONTACT(S), FEMALE, RIGHT ANGLE TWO PART BOARD CONNECTOR, SOLDER |
| 70219-922 | 9 CONTACT(S), FEMALE, RIGHT ANGLE TWO PART BOARD CONNECTOR, SOLDER |
相关代理商/技术参数 |
参数描述 |
|---|---|
| 7016S35PFI | 功能描述:IC SRAM 144KBIT 80TQFP 制造商:idt, integrated device technology inc 系列:* 零件状态:最後搶購 标准包装:90 |
| 7016S35PFI8 | 功能描述:IC SRAM 144KBIT 80TQFP 制造商:idt, integrated device technology inc 系列:* 零件状态:最後搶購 标准包装:750 |
| 7016-SS | 功能描述:螺丝和紧固件 Shoulder Screw SS 6-32 9/32in RoHS:否 制造商:Unspecified 产品: 类型:Washer 螺纹大小: 长度: 材料:Steel 电镀:Nickel 螺丝头: 螺丝类型: |
| 7016X | 制造商:CML 制造商全称:Chicago Miniature Lamp,inc 功能描述:SMT LEDs 1208 Package Size |
| 7016X1 | 功能描述:标准LED-SMD RED WATER CLEAR RoHS:否 制造商:Vishay Semiconductors 封装 / 箱体:0402 LED 大小:1 mm x 0.5 mm x 0.35 mm 照明颜色:Red 波长/色温:631 nm 透镜颜色/类型:Water Clear 正向电流:30 mA 正向电压:2 V 光强度:54 mcd 显示角:130 deg 系列:VLMx1500 封装:Reel |
发布紧急采购，3分钟左右您将得到回复。