参数资料
型号: IDT70P258L55BYGI
厂商: IDT, Integrated Device Technology Inc
文件页数: 12/23页
文件大小: 0K
描述: IC SRAM 128KBIT 55NS 100BGA
标准包装: 90
格式 - 存储器: RAM
存储器类型: SRAM - 双端口,异步
存储容量: 128K(8K x 16)
速度: 55ns
接口: 并联
电源电压: 1.7 V ~ 1.9 V
工作温度: -40°C ~ 85°C
封装/外壳: 100-VFBGA
供应商设备封装: 100-CABGA(6x6)
包装: 托盘
其它名称: 70P258L55BYGI
800-1375
IDT70P258/248L
Low Power 1.8V 8K/4K x 16 Dual-Port Static RAM
Industrial Temperature Range
Timing Waveform of Semaphore Read after Write Timing, Either Side (1)
t SAA
t O
H
A 0 -A 2
VALID ADDRESS
VALID ADDRESS
SEM
I/O 0
t AW
t EW
t WR
t DW
DATA IN
VALID
t SOP
t AC E
DATA OUT
VALID (2)
R/ W
OE
t AS
t WP
t DH
t SWRD
t AOE
NOTES:
Write Cycle
Read Cycle
5675 drw 08
,
1. CE = V IH or UB & LB = 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 15 )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"
MATCH
t SPS
SEM "B"
5675 drw 09
NOTES:
1. D 0R = D 0L = V IL , CE R = CE L = V IH , or Both UB & LB = V IH .
2. All timing is the same for left or right 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 be granted the semaphore flag.
12
6.42
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