参数资料
型号: IDT7007L15JG
厂商: IDT, Integrated Device Technology Inc
文件页数: 12/21页
文件大小: 0K
描述: IC SRAM 256KBIT 15NS 68PLCC
标准包装: 9
格式 - 存储器: RAM
存储器类型: SRAM - 双端口,异步
存储容量: 256K (32K x 8)
速度: 15ns
接口: 并联
电源电压: 4.5 V ~ 5.5 V
工作温度: 0°C ~ 70°C
封装/外壳: 68-LCC(J 形引线)
供应商设备封装: 68-PLCC(24x24)
包装: 管件
IDT7007S/L
High-Speed 32K x 8 Dual-Port Static RAM
Military, Industrial and Commercial Temperature Ranges
Timing Waveform of Semaphore Read after Write Timing, Either Side (1)
t SAA
t OH
A 0 -A 2
VALID ADDRESS
VALID ADDRESS
SEM
DATA 0
t AW
t WR
t EW
t DW
DATA IN VALID
t SOP
t ACE
DATA OUT
VALID (2)
R/ W
t AS
t WP
t DH
OE
t SWRD
t SOP
t AOE
Write Cycle
Read Cycle
2940 drw 11
NOTE:
1. CE = V IH for the duration of the above timing (both write and read cycle).
Timing Waveform of Semaphore Write Contention (1,3,4)
A 0"A" -A 2"A"
MATCH
SIDE
(2)
SIDE
(2)
"A"
"B"
R/ W "A"
SEM "A"
A 0"B" -A 2"B"
R/ W "B"
SEM "B"
MATCH
t SPS
2940 drw 12
NOTES:
1. D OR = D OL = V IL , CE R = CE L = V IH .
2. All timing is the same for left and right ports. Port "A" may be either left or right port. "B" is the opposite from port "A".
3. This parameter is measured from R/ W A or SEM A going HIGH to R/ W B or SEM B going HIGH.
4. If t SPS is not satisfied, the semaphore will fall positively to one side or the other, but there is no guarantee which side will obtain the flag.
12
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