參數(shù)資料
型號(hào): SC16C554BIB64,151
廠商: NXP Semiconductors
文件頁數(shù): 14/57頁
文件大?。?/td> 0K
描述: IC UART QUAD W/FIFO 64-LQFP
產(chǎn)品培訓(xùn)模塊: Stand-Alone UARTs
標(biāo)準(zhǔn)包裝: 160
通道數(shù): 4,QUART
FIFO's: 16 字節(jié)
電源電壓: 2.5V,3.3V,5V
帶自動(dòng)流量控制功能:
帶故障啟動(dòng)位檢測功能:
帶調(diào)制解調(diào)器控制功能:
帶CMOS:
安裝類型: 表面貼裝
封裝/外殼: 64-LQFP
供應(yīng)商設(shè)備封裝: 64-LQFP(10x10)
包裝: 托盤
產(chǎn)品目錄頁面: 827 (CN2011-ZH PDF)
其它名稱: 568-2041
935274932151
SC16C554BIB64-S
PIC12(L)F1822/PIC16(L)F1823
DS41413C-page 22
2010-2012 Microchip Technology Inc.
FIGURE 3-1:
PROGRAM MEMORY MAP
AND STACK FOR
PIC12(L)F1822/16(L)F1823
3.1.1
READING PROGRAM MEMORY AS
DATA
There are two methods of accessing constants in pro-
gram memory. The first method is to use tables of
RETLW
instructions. The second method is to set an
FSR to point to the program memory.
3.1.1.1
RETLW
Instruction
The RETLW instruction can be used to provide access
to tables of constants. The recommended way to create
such a table is shown in Example 3-1.
EXAMPLE 3-1:
RETLW
INSTRUCTION
The BRW instruction makes this type of table very sim-
ple to implement. If your code must remain portable
with previous generations of microcontrollers, then the
BRW
instruction is not available so the older table read
method must be used.
PC<14:0>
15
0000h
0004h
Stack Level 0
Stack Level 15
Reset Vector
Interrupt Vector
Stack Level 1
0005h
On-chip
Program
Memory
Page 0
07FFh
Wraps to Page 0
0800h
CALL, CALLW
RETURN, RETLW
Interrupt, RETFIE
Rollover to Page 0
7FFFh
constants
BRW
;Add Index in W to
;program counter to
;select data
RETLW DATA0
;Index0 data
RETLW DATA1
;Index1 data
RETLW DATA2
RETLW DATA3
my_function
;… LOTS OF CODE…
MOVLW
DATA_INDEX
CALL constants
;… THE CONSTANT IS IN W
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SC16C554BIB64-S 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
SC16C554BIB80 制造商:NXP Semiconductors 功能描述:IC UART QUAD 16BYTE FIFO 16C554 制造商:NXP Semiconductors 功能描述:IC, UART, QUAD, 16BYTE FIFO, 16C554 制造商:NXP Semiconductors 功能描述:IC, UART, QUAD, 16BYTE FIFO, 16C554; No. of Channels:4; Data Rate:5Mbps; Supply Voltage Min:2.25V; Supply Voltage Max:5.5V; Digital IC Case Style:LQFP; No. of Pins:80; Operating Temperature Min:-40C; Operating Temperature Max:85C; ;RoHS Compliant: Yes 制造商:NXP Semiconductors 功能描述:UART 4-CH 16Byte FIFO 2.5V/3.3V/5V 80-Pin LQFP T/R
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