参数资料
型号: IDT72230L25TP
厂商: IDT, Integrated Device Technology Inc
文件页数: 4/11页
文件大小: 0K
描述: IC FIFO 2KX8 SYNC 25NS 28DIP
标准包装: 14
系列: 7200
功能: 同步
存储容量: 16K (2K x 8)
数据速率: 67MHz
访问时间: 25ns
电源电压: 4.5 V ~ 5.5 V
工作温度: 0°C ~ 70°C
安装类型: 通孔
封装/外壳: 28-DIP(0.300",7.62mm)
供应商设备封装: 28-PDIP
包装: 管件
其它名称: 72230L25TP
2
COMMERCIALTEMPERATURERANGE
IDT72420/72200/72210/72220/72230/72240 CMOS SYNCFIFO
64 x 8, 256 x 8, 512 x 8, 1,024 x 8, 2,048 x 8, 4,096 x 8
PIN CONFIGURATION
Symbol
Name
I/O
Description
D0 - D7
Data Inputs
I
Data inputs for a 8-bit bus.
RS
Reset
I
When RS is set LOW, internal read and write pointers are set to the first location of the RAM array, FF and AF go
HIGH, and AE and EF go LOW. A reset is required before an initial WRITE after power-up.
WCLK
Write Clock
I
Data is written into the FIFO on a LOW-to-HIGH transition of WCLK when WEN is asserted.
WEN
Write Enable
I
When WEN is LOW, data is written into the FIFO on every LOW-to-HIGH transition of WCLK. Data will not be written
into the FIFO if the FF is LOW.
Q0 - Q7
Data Outputs
O
Data outputs for a 8-bit bus.
RCLK
Read Clock
I
Data is read from the FIFO on a LOW-to-HIGH transition of RCLK when REN is asserted.
REN
Read Enable
I
When REN is LOW, data is read from the FIFO on every LOW-to-HIGH transition of RCLK. Data will not be read from
the FIFO if the EF is LOW.
OE
Output Enable
I
When OE is LOW, the data output bus is active. If OE is HIGH, the output data bus will be in a high-impedance
state.
EF
Empty Flag
O
When EF is LOW, the FIFO is empty and further data reads from the output are inhibited. When EF is HIGH, the FIFO
is not empty. EF is synchronized to RCLK.
AE
Almost-Empty Flag O
When AE is LOW, the FIFO is almost empty based on the offset Empty+7. AE is synchronized to RCLK.
AF
Almost-Full Flag
O
When AF is LOW, the FIFO is almost full based on the offset Full-7. AF is synchronized to WCLK.
FF
Full Flag
O
When FF is LOW, the FIFO is full and further data writes into the input are inhibited. When FF is HIGH, the FIFO is not
full. FF is synchronized to WCLK.
VCC
Power
One +5 volt power supply pin.
GND
Ground
One 0 volt ground pin.
PIN DESCRIPTIONS
PLASTIC THIN DIP (P28-2, order code: TP)
TOP VIEW
1
2
3
4
5
6
7
8
9
10
11
12
13
14
28
27
26
25
24
23
22
21
20
19
18
17
16
15
D4
D3
D2
D1
D0
AF
AE
GND
RCLK
REN
OE
EF
FF
Q0
D5
D6
D7
RS
WEN
WCLK
VCC
Q7
Q6
Q5
Q4
Q3
Q2
Q1
2680 drw02
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