参数资料
型号: IDT70V08L20PFGI
厂商: IDT, Integrated Device Technology Inc
文件页数: 12/20页
文件大小: 0K
描述: IC SRAM 512KBIT 20NS 100TQFP
标准包装: 45
格式 - 存储器: RAM
存储器类型: SRAM - 双端口,异步
存储容量: 512K (64K x 8)
速度: 20ns
接口: 并联
电源电压: 3 V ~ 3.6 V
工作温度: -40°C ~ 85°C
封装/外壳: 100-LQFP
供应商设备封装: 100-TQFP(14x14)
包装: 托盘
其它名称: 70V08L20PFGI
IDT70V08S/L
High-Speed 3.3.V 64K x 8 Dual-Port Static RAM
Industrial and Commercial Temperature Ranges
AC Electrical Characteristics Over the
Operating Temperature and Supply Voltage Range (6)
70V08X15
Com'l Only
70V08X20
Com'l
& Ind
Symbol
Parameter
Min.
Max.
Min.
Max.
Unit
BUSY TIMING (M/ S =V IH )
t BAA
t BDA
t BAC
t BDC
BUSY Access Time from Address Match
BUSY Disable Time from Address Not Matched
BUSY Access Time from Chip Enable Low
BUSY Acce ss Time from Chip Enable High
____
____
____
____
15
15
15
15
____
____
____
____
20
20
20
20
ns
ns
ns
ns
BUSY Disable to Valid Data
Write Hold After BUSY
t APS
t BDD
t WH
Arbitration Priority Set-up Time
(3)
(5)
(2)
5
____
12
____
17
____
5
____
15
____
35
____
ns
ns
ns
BUSY TIMING (M/ S =V IL )
t WB
t WH
BUSY Input to Write (4)
Write Hold After BUSY (5)
0
12
____
____
0
15
____
____
ns
ns
PORT-TO-PORT DELAY TIMING
t WDD
t DDD
Write Pulse to Data Delay (1)
Write Data Valid to Read Data Delay (1)
____
____
30
25
____
____
45
30
ns
ns
3740 tbl 14a
70V08X25
Com'l Only
70V08X35
Com'l Only
Symbol
Parameter
Min.
Max.
Min.
Max.
Unit
BUSY TIMING (M/ S =V IH )
t BAA
t BDA
t BAC
t BDC
BUSY Access Time from Address Match
BUSY Disable Time from Address Not Matched
BUSY Access Time from Chip Enable Low
BUSY Access Time from Chip Enable High
____
____
____
____
25
25
25
25
____
____
____
____
35
35
35
35
ns
ns
ns
ns
BUSY Disable to Valid Data
Write Hold After BUSY
t APS
t BDD
t WH
Arbitration Priority Set-up Time
(3)
(5)
(2)
5
____
20
____
35
____
5
____
25
____
40
____
ns
ns
ns
BUSY TIMING (M/ S =V IL )
Write Hold After BUSY
t WB
t WH
BUSY Input to Write (4)
(5)
0
20
____
____
0
25
____
____
ns
ns
PORT-TO-PORT DELAY TIMING
t WDD
t DDD
Write Pulse to Data Delay (1)
Write Data Valid to Read Data Delay (1)
____
____
55
50
____
____
65
60
ns
ns
NOTES:
1. Port-to-port delay through RAM cells from writing port to reading port, refer to "Timing Waveform of Write with Port-to-Port Read and BUSY (M/S = V IH )".
2. To ensure that the earlier of the two ports wins.
3. t BDD is a calculated parameter and is the greater of 0, t WDD – t WP (actual), or t DDD – t DW (actual).
4. To ensure that the write cycle is inhibited on port "B" during contention on port "A".
5. To ensure that a write cycle is completed on port "B" after contention on port "A".
6. 'X' in part numbers indicates power rating (S or L).
12
3740 tbl 14b
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