參數(shù)資料
型號(hào): IDT7026S20GB
廠(chǎng)商: INTEGRATED DEVICE TECHNOLOGY INC
元件分類(lèi): DRAM
英文描述: HIGH-SPEED 16K x 16 DUAL-PORT STATIC RAM
中文描述: 16K X 16 DUAL-PORT SRAM, 20 ns, CPGA84
封裝: CERAMIC, PGA-84
文件頁(yè)數(shù): 14/18頁(yè)
文件大小: 239K
代理商: IDT7026S20GB
6.17
14
IDT7026S/L
HIGH-SPEED 16K x 16 DUAL-PORT STATIC RAM
MILITARY AND COMMERCIAL TEMPERATURE RANGES
WAVEFORM OF BUSY ARBITRATION CONTROLLED BY
CE
TIMING
(M/
S
= V
IH
)
(1)
WAVEFORM OF BUSY ARBITRATION CYCLE CONTROLLED BY ADDRESS MATCH TIMING
(M/
S
= V
IH
)
(1)
2939 drw 15
ADDR
"A"
and
"B"
ADDRESSES MATCH
CE
"A"
CE
"B"
BUSY
"B"
t
APS
t
BAC
t
BDC
(2)
2939 drw 15
ADDR
"A"
ADDRESS "N"
ADDR
"B"
BUSY
"B"
t
APS
t
BAA
t
BDA
(2)
MATCHING ADDRESS "N"
NOTES:
1. All timing is the same for left and right ports. Port “A” may be either the left or right port. Port “B” is the port opposite from “A”.
2. If t
APS
is not satisfied, the busy signal will be asserted on one side or another but there is no guarantee on which side busy will be asserted.
TRUTH TABLE III — EXAMPLE OF SEMAPHORE PROCUREMENT SEQUENCE
(1,2)
Functions
D
0
- D
15
Left
No Action
1
Left Port Writes "0" to Semaphore
0
Right Port Writes "0" to Semaphore
0
Left Port Writes "1" to Semaphore
1
Left Port Writes "0" to Semaphore
1
Right Port Writes "1" to Semaphore
0
Left Port Writes "1" to Semaphore
1
Right Port Writes "0" to Semaphore
1
Right Port Writes "1" to Semaphore
1
Left Port Writes "0" to Semaphore
0
Left Port Writes "1" to Semaphore
1
D
0
- D
15
Right
Status
1
1
1
0
0
1
1
0
1
1
1
Semaphore free
Left port has semaphore token
No change. Right side has no write access to semaphore
Right port obtains semaphore token
No change. Left port has no write access to semaphore
Left port obtains semaphore token
Semaphore free
Right port has semaphore token
Semaphore free
Left port has semaphore token
Semaphore free
NOTES:
1. This table denotes a sequence of events for only one of the eight semaphores on the IDT7026.
2. There are eight semaphore flags written to via I/O
0
and read from all I/O's (I/O
0
-I/O
15
). These eight semaphores are addressed by A
0
- A
2
.
2683 tbl 16
相關(guān)PDF資料
PDF描述
IDT7026S20J HIGH-SPEED 16K x 16 DUAL-PORT STATIC RAM
IDT7026S20JB HIGH-SPEED 16K x 16 DUAL-PORT STATIC RAM
IDT7026S25G HIGH-SPEED 16K x 16 DUAL-PORT STATIC RAM
IDT7026S55JB HIGH-SPEED 16K x 16 DUAL-PORT STATIC RAM
IDT7026L55JB HIGH-SPEED 16K x 16 DUAL-PORT STATIC RAM
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IDT7026S20J8 功能描述:IC SRAM 256KBIT 20NS 84PLCC RoHS:否 類(lèi)別:集成電路 (IC) >> 存儲(chǔ)器 系列:- 標(biāo)準(zhǔn)包裝:1,000 系列:- 格式 - 存儲(chǔ)器:RAM 存儲(chǔ)器類(lèi)型:SRAM - 雙端口,同步 存儲(chǔ)容量:1.125M(32K x 36) 速度:5ns 接口:并聯(lián) 電源電壓:3.15 V ~ 3.45 V 工作溫度:-40°C ~ 85°C 封裝/外殼:256-LBGA 供應(yīng)商設(shè)備封裝:256-CABGA(17x17) 包裝:帶卷 (TR) 其它名稱(chēng):70V3579S5BCI8
IDT7026S25G 功能描述:IC SRAM 256KBIT 25NS 84PGA RoHS:否 類(lèi)別:集成電路 (IC) >> 存儲(chǔ)器 系列:- 標(biāo)準(zhǔn)包裝:3,000 系列:- 格式 - 存儲(chǔ)器:EEPROMs - 串行 存儲(chǔ)器類(lèi)型:EEPROM 存儲(chǔ)容量:8K (1K x 8) 速度:400kHz 接口:I²C,2 線(xiàn)串口 電源電壓:1.7 V ~ 5.5 V 工作溫度:-40°C ~ 85°C 封裝/外殼:8-SOIC(0.154",3.90mm 寬) 供應(yīng)商設(shè)備封裝:8-SOIC 包裝:帶卷 (TR)
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