参数资料
型号: IDT71421LA25JI8
厂商: IDT, Integrated Device Technology Inc
文件页数: 8/17页
文件大小: 0K
描述: IC SRAM 16KBIT 25NS 52PLCC
标准包装: 400
格式 - 存储器: RAM
存储器类型: SRAM - 双端口,异步
存储容量: 16K (2K x 8)
速度: 25ns
接口: 并联
电源电压: 4.5 V ~ 5.5 V
工作温度: -40°C ~ 85°C
封装/外壳: 52-LCC(J 形引线)
供应商设备封装: 52-PLCC(19x19)
包装: 带卷 (TR)
其它名称: 71421LA25JI8
IDT71321SA/LA and IDT71421SA/LA
High Speed 2K x 8 Dual-Port Static RAM with Interrupts
Industrial and Commercial Temperature Ranges
Timing Waveform of Read Cycle No. 1, Either Side (1)
t RC
ADDRESS
t OH
t AA
t OH
DATA OUT
BUSY OUT
PREVIOUS DATA VALID
t BDDH (2,3)
DATA VALID
2691 drw 06
NOTES:
1. R/ W = V IH , CE = V IL , and is OE = V IL . Address is valid prior to the coincidental with CE transition LOW.
2. t BDD delay is required only in the case where the opposite port is completing a write operation to the same address location. For simultaneous read operations
BUSY has no relationship to valid output data.
3. Start of valid data depends on which timing becomes effective last t AOE , t ACE , t AA , and t BDD .
Timing Waveform of Read Cycle No. 2, Either Side (3)
t ACE
CE
t AOE
OE
DATA OUT
t LZ (1)
(4)
t HZ (2)
VALID DATA
t HZ (2)
I CC
t PU
t LZ
(1)
t PD
(4)
CURRENT
50%
50%
I SS
2691 drw 07
NOTES:
1. Timing depends on which signal is asserted last, OE or CE .
2. Timing depends on which signal is de-asserted first, OE or CE .
3. R/ W = V IH and OE = V IL , and the address is valid prior to or coincidental with CE transition LOW.
4. Start of valid data depends on which timing becomes effective last t AOE , t ACE , t AA , and t BDD .
8
6.42
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