參數(shù)資料
型號(hào)： 935270019512
廠商： NXP SEMICONDUCTORS
元件分類： 微控制器/微處理器
英文描述： 2 CHANNEL(S), 5M bps, SERIAL COMM CONTROLLER, PQCC44
封裝： PLASTIC, MS-018, SOT-187-2, LCC-44
文件頁數(shù)： 48/51頁
文件大?。?/td> 667K
代理商： 935270019512
Philips Semiconductors
SC16C2550
Dual UART with 16 bytes of transmit and receive FIFOs
and infrared (IrDA) encoder/decoder
Product data
Rev. 02 — 14 March 2003
6 of 47
9397 750 11204
Koninklijke Philips Electronics N.V. 2003. All rights reserved.
5.2 Pin description
Fig 4.
LQFP48 pin conguration.
SC16C2550IB48
002aaa104
1
2
3
4
5
6
7
8
9
10
11
12
36
35
34
33
32
31
30
29
28
27
26
25
13
14
15
16
17
18
19
20
21
22
23
24
48
47
46
45
44
43
42
41
40
39
38
37
D4
D3
D2
D1
D0
TXRDYA
V
CC
RIA
CDA
DSRA
CTSA
N.C.
XTAL1
XTAL2
IOW
CDB
GND
RXRDYB
IOR
DSRB
RIB
RTSB
CTSB
N.C.
D5
D6
D7
RXB
RXA
TXRDYB
TXA
TXB
OP2B
CSA
CSB
N.C.
RESET
DTRB
DTRA
RTSA
OP2A
RXRDYA
INTA
INTB
A0
A1
A2
N.C.
Table 2:
Pin description
Symbol
Pin
Type Description
DIP40 PLCC44 LQFP48
A0
28
31
28
I
Address 0 select bit. Internal register address selection.
A1
27
30
27
I
Address 1 select bit. Internal register address selection.
A2
26
29
26
I
Address 2 select bit. Internal register address selection.
CSA, CSB 14, 15 16, 17
10, 11
I
Chip Select A, B (Active-LOW). This function is associated with individual
channels, A through B. These pins enable data transfers between the user
CPU and the SC16C2550 for the channel(s) addressed. Individual UART
sections (A, B) are addressed by providing a logic 0 on the respective CSA,
CSB pin.
D0-D7
1-8
2-9
44-48,
1-3
I/O
Data bus (bi-directional). These pins are the 8-bit, 3-State data bus for
transferring information to or from the controlling CPU. D0 is the least
signicant bit and the rst data bit in a transmit or receive serial data
stream.
GND
20
22
17
I
Signal and power ground.
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