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參數(shù)資料
型號: IDT707278S
廠商: Integrated Device Technology, Inc.
英文描述: HIGH-SPEED 32K x 16 BANK-SWITCHABLE DUAL-PORTED SRAM WITH EXTERNAL BANK SELECTS
中文描述: 高速32K的× 16 BANK-SWITC哈布萊雙端口SRAM與外部銀行選擇
文件頁數(shù): 1/16頁
文件大小: 135K
代理商: IDT707278S
2000 Integrated Device Technology, Inc.
DSC 3739/6
1
8Kx16
MEMORY
ARRAY
(BANK 3)
MUX
MUX
R/
W
L
CE
0L
CE
1L
UB
L
LB
L
OE
L
I/O
8L-15L
I/O
0L-7L
A
12L
A
0L(1)
A
5L(1)
A
0L(1)
LB
L
/
UB
L
OE
L
R/
W
L
CE
L
MAILBOX
INTERRUPT
LOGIC
8Kx16
MEMORY
ARRAY
(BANK 1)
MUX
8Kx16
MEMORY
ARRAY
(BANK 0)
MUX
MUX
CONTROL
LOGIC
I/O
CONTROL
BANK
DECODE
ADDRESS
DECODE
R/
W
R
CE
0R
CE
1R
UB
R
LB
R
OE
R
I/O
8R-15R
I/O
0R-7R
A
12R
A
0R(1)
CONTROL
LOGIC
I/O
CONTROL
BANK
DECODE
ADDRESS
DECODE
A
5R(1)
A
0R(1)
LB
R
/
UB
R
OE
R
R/
W
R
CE
R
3739 drw 01
MBSEL
R
INT
R
MBSEL
L
INT
L
BKSEL
3(2)
BKSEL
0(2)
BANK
SELECT
BA
1R
BA
0R
BA
1L
BA
0L
MUX
HIGH-SPEED
32K x 16 BANK-SWITCHABLE
DUAL-PORTED SRAM WITH
EXTERNAL BANK SELECTS
N
32K x 16 Bank-Switchable Dual-Ported SRAMArchitecture
– Four independent 8K x 16 banks
– 512 Kilobit of memory on chip
N
Fast asynchronous address-to-data access time: 15ns
N
User-controlled input pins included for bank selects
N
Independent port controls with asynchronous address &
data busses
N
Four 16-bit mailboxes available to each port for inter-
processor communications; interrupt option
IDT707278S/L
NOTES:
1. The first six address pins for each port serve dual functions. When
MBSEL
= V
IH
, the pins serve as memory address inputs. When
MBSEL
= V
IL
, the pins
serve as mailbox address inputs.
2. Each bank has an input pin assigned that allows the user to toggle the assignment of that bank between the two ports. Refer to Truth Table I for
more details.
N
Interrupt flags with programmable masking
N
Dual Chip Enables allow for depth expansion without
external logic
N
UB
and
LB
are available for x8 or x16 bus matching
N
TTL-compatible, single 5V (±10%) power supply
N
Available in a 100-pin Thin Quad Flatpack (14mm x 14mm)
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