參數資料
型號： P89V51RB2BBC,557
廠商： NXP Semiconductors
文件頁數： 31/80頁
文件大?。?/td> 0K
描述： IC 80C51 MCU 1024 RAM 44TQFP
產品培訓模塊： Migrating from 8/16-Bit MCUs to 32-Bit ARMs
標準包裝： 800
系列： 89V
核心處理器： 8051
芯體尺寸： 8-位
速度： 40MHz
連通性： SPI，UART/USART
外圍設備： 欠壓檢測/復位，POR，PWM，WDT
輸入/輸出數： 32
程序存儲器容量： 16KB（16K x 8）
程序存儲器類型： 閃存
RAM 容量： 1K x 8
電壓 - 電源 (Vcc/Vdd)： 4.5 V ~ 5.5 V
振蕩器型： 內部
工作溫度： 0°C ~ 70°C
封裝/外殼： 44-TQFP
包裝： 托盤
配用： 622-1017-ND - BOARD 44-ZIF PLCC SOCKET
其它名稱： 935277723557
P89V51RB2BBC
P89V51RB2BBC-ND
P89V51RB2_RC2_RD2_5
NXP B.V. 2009. All rights reserved.
Product data sheet
Rev. 05 — 12 November 2009
37 of 80
NXP Semiconductors
P89V51RB2/RC2/RD2
8-bit microcontrollers with 80C51 core
not cause a reload from (RCAP2H, RCAP2L) to (TH2,TL2). Therefore when Timer 2 is in
use as a baud rate generator, T2EX can be used as an additional external interrupt, if
needed.
When Timer 2 is in the baud rate generator mode, one should not try to read or write TH2
and TL2. Under these conditions, a read or write of TH2 or TL2 may not be accurate. The
RCAP2 registers may be read, but should not be written to, because a write might overlap
a reload and cause write and/or reload errors. The timer should be turned off (clear TR2)
before accessing the Timer 2 or RCAP2 registers. Table 24 shows commonly used baud
rates and how they can be obtained from Timer 2.
6.5.5 Summary of baud rate equations
Timer 2 is in baud rate generating mode. If Timer 2 is being clocked through pin T2 (P1.0)
the baud rate is:
Baud rate = Timer 2 overow rate / 16
If Timer 2 is being clocked internally, the baud rate is:
Baud rate = fosc / (16 × (65536 (RCAP2H, RCAP2L)))
Where fosc = oscillator frequency
To obtain the reload value for RCAP2H and RCAP2L, the above equation can be rewritten
as:
RCAP2H, RCAP2L = 65536
f
osc / (16 × baud rate)
6.6 UARTs
The UART operates in all standard modes. Enhancements over the standard 80C51
UART include Framing Error detection, and automatic address recognition.
6.6.1 Mode 0
Serial data enters and exits through RXD and TXD outputs the shift clock. Only 8 bits are
transmitted or received, LSB rst. The baud rate is xed at 1
6 of the CPU clock frequency.
UART congured to operate in this mode outputs serial clock on TXD line no matter
whether it sends or receives data on RXD line.
Table 24.
Timer 2 generated commonly used baud rates
Rate
Osc freq
Timer 2
RCAP2H
RCAP2L
750 kBd
12 MHz
FF
19.2 kBd
12 MHz
FF
D9
9.6 kBd
12 MHz
FF
B2
4.8 kBd
12 MHz
FF
64
2.4 kBd
12 MHz
FE
C8
600 Bd
12 MHz
FB
1E
220 Bd
12 MHz
F2
AF
600 Bd
6 MHz
FD
8F
220 Bd
6 MHz
F9
57
相關PDF資料
PDF描述
VJ1825A223JBCAT4X CAP CER 0.022UF 200V 5% NP0 1825
VJ1825A223KBCAT4X CAP CER 0.022UF 200V NP0 1825
VJ2225A562JBAAT4X CAP CER 5600PF 50V 5% NP0 2225
VJ2225A562JBBAT4X CAP CER 5600PF 100V 5% NP0 2225
VJ2225A562JBCAT4X CAP CER 5600PF 200V 5% NP0 2225
相關代理商/技術參數
參數描述
P89V51RB2FA 制造商:NXP Semiconductors 功能描述:MCU 8BIT 80C51 16K FLASH PLCC44
P89V51RB2FA,529 功能描述:8位微控制器 -MCU 80C51 16K FL / 512 R RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數據總線寬度:8 bit 最大時鐘頻率:50 MHz 程序存儲器大小:16 KB 數據 RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風格:SMD/SMT
P89V51RB2FA529 制造商:NXP Semiconductors 功能描述:IC 8BIT MCU 80C51 40MHZ LCC-44
P89V51RB2FN 制造商:NXP Semiconductors 功能描述:IC MCU 8BIT 80C51 16K FLASH DIP40 制造商:NXP Semiconductors 功能描述:IC, MCU 8BIT 80C51 16K FLASH, DIP40
P89V51RB2FN,112 功能描述:8位微控制器 -MCU 80C51 16K FL / 512 R RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數據總線寬度:8 bit 最大時鐘頻率:50 MHz 程序存儲器大小:16 KB 數據 RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風格:SMD/SMT
發(fā)布緊急采購，3分鐘左右您將得到回復。

采購需求

(若只采購一條型號，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進入我的后臺，查看報價

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進入我的后臺，查看報價

*型號 *數量 廠商 批號 封裝
添加更多采購

我的聯(lián)系方式

*
*
*