参数资料
型号: IDT7015L12J8
厂商: IDT, Integrated Device Technology Inc
文件页数: 11/20页
文件大小: 0K
描述: IC SRAM 72KBIT 12NS 68PLCC
标准包装: 250
格式 - 存储器: RAM
存储器类型: SRAM - 双端口,异步
存储容量: 72K(8K x 9)
速度: 12ns
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: 带卷 (TR)
其它名称: 7015L12J8
IDT7015S/L
High-Speed 8K x 9 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
I/O
t AW
t EW
t WR
t DW
DATA IN
VALID
t SO P
t AC E
DATA OUT
VALID (2)
R/ W
t AS
t WP
t DH
t SWRD
t AOE
OE
Write Cycle
Read Cycle
2954 drw 11
NOTES:
1. CE = V IH for the duration of the above timing (both write and read cycle).
2. “DATA OUT VALID” represents all I/O's (I/O 0 -I/O 8 ) equal to the semaphore value.
Timing Waveform of Semaphore Write Contention (1,3,4)
A 0"A" -A 2 "A"
MATCH
(2)
SIDE
(2)
SIDE
"A"
"B"
R/ W "A"
SEM "A"
A 0"B" -A 2 "B"
R/ W "B"
SEM "B"
MATCH
t SPS
2954 drw 12
NOTES:
1. D OR = D OL =V IH , 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 port from “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, there is no guarantee which side will obtain the semaphore flag.
11
6.42
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