REV. 5.0.2 4 PIN DESCRIPTIONS Pin Description N
參數(shù)資料
型號： ST16C654IQ100-F
廠商： Exar Corporation
文件頁數(shù)： 34/51頁
文件大小： 0K
描述： IC UART FIFO 64B QUAD 100QFP
標(biāo)準(zhǔn)包裝： 66
特點(diǎn)： *
通道數(shù)： 4，QUART
FIFO's： 64 字節(jié)
規(guī)程： RS232
電源電壓： 2.97 V ~ 5.5 V
帶自動流量控制功能： 是
帶IrDA 編碼器/解碼器： 是
帶故障啟動位檢測功能： 是
帶調(diào)制解調(diào)器控制功能： 是
帶CMOS： 是
安裝類型： 表面貼裝
封裝/外殼： 100-BQFP
供應(yīng)商設(shè)備封裝： 100-QFP（14x20）
包裝： 托盤
其它名稱： 1016-1660
ST16C654IQ100-F-ND
ST16C654/654D
xr
2.97V TO 5.5V QUAD UART WITH 64-BYTE FIFO
REV. 5.0.2
4
PIN DESCRIPTIONS
Pin Description
NAME
64-LQFP
PIN #
68-PLCC
PIN#
100-QFP
PIN #
TYPE
DESCRIPTION
DATA BUS INTERFACE
A2
A1
A0
22
23
24
32
33
34
37
38
39
I
Address data lines [2:0]. These 3 address lines select one of the
internal registers in UART channel A-D during a data bus transac-
tion.
D7
D6
D5
D4
D3
D2
D1
D0
60
59
58
57
56
55
54
53
5
4
3
2
1
68
67
66
95
94
93
92
91
90
89
88
I/O
Data bus lines [7:0] (bidirectional).
IOR#
(VCC)
40
52
66
I
When 16/68# pin is at logic 1, the Intel bus interface is selected and
this input becomes read strobe (active low). The falling edge insti-
gates an internal read cycle and retrieves the data byte from an
internal register pointed by the address lines [A2:A0], puts the data
byte on the data bus to allow the host processor to read it on the ris-
ing edge.
When 16/68# pin is at logic 0, the Motorola bus interface is selected
and this input is not used and should be connected to VCC.
IOW#
(R/W#)
9
18
15
I
When 16/68# pin is at logic 1, it selects Intel bus interface and this
input becomes write strobe (active low). The falling edge instigates
the internal write cycle and the rising edge transfers the data byte on
the data bus to an internal register pointed by the address lines.
When 16/68# pin is at logic 0, the Motorola bus interface is selected
and this input becomes read (logic 1) and write (logic 0) signal.
CSA#
(CS#)
7
16
13
I
When 16/68# pin is at logic 1, this input is chip select A (active low)
to enable channel A in the device.
When 16/68# pin is at logic 0, this input becomes the chip select
(active low) for the Motorola bus interface.
CSB#
(A3)
11
20
17
I
When 16/68# pin is at logic 1, this input is chip select B (active low)
to enable channel B in the device.
When 16/68# pin is at logic 0, this input becomes address line A3
which is used for channel selection in the Motorola bus interface.
CSC#
(A4)
38
50
64
I
When 16/68# pin is at logic 1, this input is chip select C (active low)
to enable channel C in the device.
When 16/68# pin is at logic 0, this input becomes address line A4
which is used for channel selection in the Motorola bus interface.
CSD#
(VCC)
42
54
68
I
When 16/68# pin is at logic 1, this input is chip select D (active low)
to enable channel D in the device.
When 16/68# pin is at logic 0, this input is not used and should be
connected VCC.
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