参数资料
型号: SC16C754BIA68,529
厂商: NXP Semiconductors
文件页数: 47/50页
文件大小: 0K
描述: IC UART QUAD 64BYTE 68PLCC
标准包装: 18
通道数: 4,QUART
FIFO's: 64 字节
电源电压: 2.5V,3.3V,5V
带自动流量控制功能:
带故障启动位检测功能:
带调制解调器控制功能:
安装类型: 表面贴装
封装/外壳: 68-LCC(J 形引线)
供应商设备封装: 68-PLCC
包装: 管件
其它名称: 935274938529
SC16C754BIA68-S
SC16C754BIA68-S-ND
SC16C754B_4
NXP B.V. 2008. All rights reserved.
Product data sheet
Rev. 04 — 6 October 2008
6 of 51
NXP Semiconductors
SC16C754B
5 V, 3.3 V and 2.5 V quad UART, 5 Mbit/s (max.) with 64-byte FIFOs
5.2 Pin description
Fig 4.
Pin conguration for PLCC68
SC16C754BIA68
DSRA
DSRD
CTSA
CTSD
DTRA
DTRD
VCC
GND
RTSA
RTSD
INTA
INTD
CSA
CSD
TXA
TXD
IOW
IOR
TXB
TXC
CSB
INTB
RTSB
GND
DTRB
CTSB
DSRB
CSC
INTC
RTSC
VCC
DTRC
CTSC
DSRC
CDB
GND
RIB
D7
RXB
D6
CLKSEL
D5
CDA
RIA
RXA
n.c.
D4
A2
D3
A1
D2
A0
D1
XTAL1
D0
XTAL2
INTSEL
RESET
RXRDY
TXRDY
GND
RXC
RIC
CDC
V
CC
RXD
RID
CDD
002aaa868
10
11
12
13
14
15
16
17
18
19
20
60
59
58
57
56
55
54
53
52
51
50
21
22
23
24
25
26
49
48
47
46
45
44
27
28
29
30
31
32
33
34
35
36
37
6
5
4
3
2
1
68
67
66
65
64
9
8
7
38
39
40
41
42
43
63
62
61
Table 2.
Pin description
Symbol
Pin
Type
Description
LQFP64 LQFP80 PLCC68
A0
24
30
34
I
Address 0 select bit. Internal registers address selection.
A1
23
29
33
I
Address 1 select bit. Internal registers address selection.
A2
22
28
32
I
Address 2 select bit. Internal registers address selection.
CDA64
79
9
I
Carrier Detect (active LOW). These inputs are associated with
individual UART channels A through D. A logic LOW on these pins
indicates that a carrier has been detected by the modem for that channel.
The state of these inputs is reected in the Modem Status Register
(MSR).
CDB
18
23
27
CDC
31
39
43
CDD
49
63
61
CLKSEL
-
26
30
I
Clock Select. CLKSEL selects the divide-by-1 or divide-by-4 prescalable
clock. During the reset, a logic 1 (VCC) on CLKSEL selects the
divide-by-1 prescaler. A logic 0 (GND) on CLKSEL selects the divide-by-4
prescaler. The value of CLKSEL is latched into MCR[7] at the trailing
edge of RESET. A logic 1 (VCC) on CLKSEL will latch a logic 0 into
MCR[7]. A logic 0 (GND) on CLKSEL will latch a logic 1 into MCR[7].
MCR[7] can be changed after RESET to alter the prescaler value. This
pin is associated with LQFP80 and PLCC68 packages only. This pin is
connected to VCC internally on LQFP64 package.
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