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參數資料
| 型號： | FT8U245AM |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | USB FIFO - Fast Parallel Data Transfer IC |
| 中文描述： | USB先進先出-快速并行數據傳輸芯片 |
| 文件頁數： | 5/15頁 |
| 文件大小： | 46K |
| 代理商： | FT8U245AM |
Future Technology Devices Intl. FT8U245AM Preliminary Information Rev 0.9 – Subject to Change
Table 1 - FT8U245AM - PINOUT DESCRIPTION
Pin #
Signal
Type
Description
7
8
USBDP
USBDM
I/O
I/O
USB Data Signal Plus – Requires 1.5k pull-up to 3V3OUT
USB Data Signal Minus
6
3V3OUT
OUT
3.3 volt Output from integrated regulator
27
XTIN
IN
Input to 6MHz Crystal Oscillator Cell
28
XTOUT
OUT
Output from 6MHz Crystal Oscillator Cell
31
RCCLK
I/O
RC timer – used to guarantee clock stability on exiting sleep
mode. Clamped low during reset or sleep condition.
Resets entire device using external RC network
4
RESET#
IN
32
EECS
I/O
Optional EEPROM – Chip Select
1
EESK
I/O
Optional EEPROM – Clock
2
EEDATA
I/O
Optional EEPROM – Data I/O
5
TEST
IN
Puts device in i.c. test mode – must be tied to GND
25
D0
I/O
Bi-directional Data Bus Bit # 0
24
D1
I/O
Bi-directional Data Bus Bit # 1
23
D2
I/O
Bi-directional Data Bus Bit # 2
22
D3
I/O
Bi-directional Data Bus Bit # 3
21
D4
I/O
Bi-directional Data Bus Bit # 4
20
D5
I/O
Bi-directional Data Bus Bit # 5
19
D6
I/O
Bi-directional Data Bus Bit # 6
18
D7
I/O
Bi-directional Data Bus Bit # 7
16
RD#
IN
Enables Current FIFO Data Byte on D0..D7.when low.
Fetches the next FIFO Data Byte ( if available ) from the
Receive FIFO Buffer when RD# goes from low to high.
15
WR
IN
Writes the Data Byte on the D0..D7 into the Transmit FIFO
Buffer when WR goes from high to low.
14
TXE#
OUT
When high, do not write data into the FIFO. When low, data can
be written into the FIFO by strobing WR high then low.
When high, do not read data from the FIFO. When low, there is
data available in the FIFO which can be read by strobing RD#
low then high again.
12
RXF#
OUT
11
EEREQ#
IN
Requests the EEPROM contents to be accessed via the Data
Bus.
When low, allows the EEPROM contents to be accessed via the
Data Bus.
10
EEGNT#
OUT
3,13,26
VCC
PWR
Device - +4.4 volt to +5.25 volt Power Supply Pins
9.17
GND
PWR
Device – Ground Supply Pins
30
AVCC
PWR
Device - Analog Power Supply for the internal x8 clock multiplier
29
AGND
PWR
Device - Analog Ground Supply for the internal x8 clock
multiplier
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