IDT7025S17F 查看數據表（PDF） - Integrated Device Technology
零件编号
产品描述 (功能)
生产厂家
IDT7025S17F Datasheet PDF : 21 Pages
| |||
IDT7025S/L
High-Speed 8K x 16 Dual-Port Static RAM
Military, Industrial and Commercial Temperature Ranges
Truth Table I: Non-Contention Read/Write Control
Inputs(1)
Outputs
CE
R/W
OE
UB
LB
SEM
I/O8-15
I/O0-7
Mode
H
X
X
X
X
H
High-Z
High-Z Deselected
X
X
X
H
H
H
High-Z
High-Z Both Bytes Deselected
L
L
X
L
H
H
DATAIN
High-Z Write to Upper Byte Only
L
L
X
H
L
H
High-Z
DATAIN Write to Lower Byte Only
L
L
X
L
L
H
DATAIN
DATAIN Write to Both Bytes
L
H
L
L
H
H
DATAOUT
High-Z Read Upper Byte Only
L
H
L
H
L
H
High-Z
DATAOUT Read Lower Byte Only
L
H
L
L
L
H
DATAOUT
DATAOUT Read Both Bytes
X
X
H
X
X
X
High-Z
High-Z Outputs Disabled
NOTE:
1. A0L — A12L ≠ A0R — A12R.
2683 tbl 02
Truth Table II: Semaphore Read/Write Control(1)
Inputs
Outputs
CE
R/W
OE
UB
LB
SEM
I/O8-15
I/O0-7
Mode
H
H
L
X
X
L
DATAOUT
DATAOUT Read Semaphore Flag Data Out
X
H
L
H
H
L
DATAOUT
DATAOUT Read Semaphore Flag Data Out
H
↑
X
X
X
L
DATAIN
DATAIN Write I/O0 into Semaphore Flag
X
↑
X
H
H
L
DATAIN
DATAIN Write I/O0 into Semaphore Flag
L
X
X
L
X
L
____
____
Not Allowed
L
X
X
X
L
L
____
____
Not Allowed
NOTES:
1. There are eight semaphore flags written to via I/O0 and read from I/O0 - I/O15. These eight semaphores are addressed by A0 - A2.
2683 tbl 03
6.42
Share Link: 