參數(shù)資料
型號(hào)： SC16C554B
廠商： NXP Semiconductors N.V.
英文描述： 5 V, 3.3 V and 2.5 V quad UART, 5 Mbit/s (max.) with 16-byte FIFOs
中文描述： 5伏，3.3伏和2.5伏兆5四異步/秒（最大），16字節(jié)的FIFO
文件頁(yè)數(shù)： 9/51頁(yè)
文件大小： 253K
代理商： SC16C554B
9397 750 13133
Koninklijke Philips Electronics N.V. 2005. All rights reserved.
Product data sheet
Rev. 01 — 9 February 2005
9 of 51
Philips Semiconductors
SC16C554B/554DB
5 V, 3.3 V and 2.5 V quad UART, 5 Mbit/s (max.) with 16-byte FIFOs
5.2 Pin description
Table 2:
Pin description
Pin
PLCC68
31
Symbol
Type
Description
LQFP64
-
LQFP80
-
16/68
I
16/68 Interface type select (input with internal pull-up).
This
input provides the 16 (Intel) or 68 (Motorola) bus interface type
select. The functions of IOR, IOW, INTA to INTD, and CSA to CSD
are re-assigned with the logical state of this pin. When this pin is a
logic 1, the 16 mode interface (16C554) is selected. When this pin
is a logic 0, the 68 mode interface (68C554) is selected. When this
pin is a logic 0, IOW is re-assigned to R/W, RESET is re-assigned
to RESET, IOR is not used, and INTA to INTD are connected in a
wire-OR configuration. The wire-OR outputs are connected
internally to the open drain IRQ signal output. This pin is not
available on 64-pin packages which operate in the 16 mode only.
Address 0 select bit.
Internal registers address selection in 16 and
68 modes.
Address 1 select bit.
Internal registers address selection in 16 and
68 modes.
Address 2 select bit.
Internal registers address selection in 16 and
68 modes.
Address 3 to Address 4 select bits.
When the 68 mode is
selected, these pins are used to address or select individual UARTs
(providing CS is a logic 0). In the 16 mode, these pins are
re-assigned as chip selects, see CSB and CSC.
Carrier Detect (active LOW).
These inputs are associated with
individual UART channels A through D. A logic 0 on this pin
indicates that a carrier has been detected by the modem for that
channel.
Chip Select (active LOW).
In the 68 mode, this pin functions as a
multiple channel chip enable. In this case, all four UARTs (A to D)
are enabled when the CS pin is a logic 0. An individual UART
channel is selected by the data contents of address bits A3 to A4.
when the 16 mode is selected (68-pin devices), this pin functions as
CSA (see definition under CSA, CSB).
Chip Select A, B, C, D (active LOW).
This function is associated
with the 16 mode only, and for individual channels ‘A’ through ‘D’.
When in 16 mode, these pins enable data transfers between the
user CPU and the SC16C554B/554DB for the channel(s)
addressed. Individual UART sections (A, B, C, D) are addressed by
providing a logic 0 on the respective CSA to CSD pin. When the
68 mode is selected, the functions of these pins are re-assigned.
68 mode functions are described under their respective name/pin
headings.
Clear to Send (active LOW).
These inputs are associated with
individual UART channels A to D. A logic 0 on the CTS pin indicates
the modem or data set is ready to accept transmit data from the
SC16C554B/554DB. Status can be tested by reading MSR[4]. This
pin only affects the transmit or receive operations when auto-CTS
function is enabled via MCR[5] for hardware flow control operation.
A0
34
24
48
I
A1
33
23
47
I
A2
32
22
46
I
A3, A4
20, 50
-
-
I
CDA, CDB,
CDC, CDD
9, 27,
43, 61
64, 18,
31, 49
19, 42,
59, 2
I
CS
16
-
-
I
CSA, CSB,
CSC, CSD
16, 20,
50, 54
7, 11,
38, 42
28, 33,
68, 73
I
CTSA,CTSB,
CTSC, CTSD
11, 25,
45, 59
2, 16,
33, 47
23, 38,
63, 78
I
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
SC16C554B_10 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:5 V, 3.3 V and 2.5 V quad UART, 5 Mbit/s (max.) with 16-byte FIFOs
SC16C554BIB64 功能描述:UART 接口集成電路 16CB 2.5V-5V 4CH UART 16B FIFO RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 數(shù)據(jù)速率:3 Mbps 電源電壓-最大:3.6 V 電源電壓-最小:2.7 V 電源電流:20 mA 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:LQFP-48 封裝:Reel
SC16C554BIB64,128 功能描述:UART 接口集成電路 16CB 2.5V-5V 4CH RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 數(shù)據(jù)速率:3 Mbps 電源電壓-最大:3.6 V 電源電壓-最小:2.7 V 電源電流:20 mA 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:LQFP-48 封裝:Reel
SC16C554BIB64,128 PBF 制造商:NXP Semiconductors 功能描述:
SC16C554BIB64,151 功能描述:UART 接口集成電路 4CH. UART 16B FIFO RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 數(shù)據(jù)速率:3 Mbps 電源電壓-最大:3.6 V 電源電壓-最小:2.7 V 電源電流:20 mA 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:LQFP-48 封裝:Reel
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