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| 型號(hào)： | P89CV51RC2FA,512 |
| 廠商： | NXP Semiconductors |
| 文件頁(yè)數(shù)： | 33/76頁(yè) |
| 文件大?。?/td> | 0K |
| 描述： | IC 80C51 MCU FLASH 32K 44-PLCC |
| 產(chǎn)品培訓(xùn)模塊： | Migrating from 8/16-Bit MCUs to 32-Bit ARMs |
| 標(biāo)準(zhǔn)包裝： | 26 |
| 系列： | 89C |
| 核心處理器： | 8051 |
| 芯體尺寸： | 8-位 |
| 速度： | 40MHz |
| 連通性： | EBI/EMI，SPI，UART/USART |
| 外圍設(shè)備： | POR，PWM，WDT |
| 輸入/輸出數(shù)： | 32 |
| 程序存儲(chǔ)器容量： | 32KB（32K x 8） |
| 程序存儲(chǔ)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(nèi)部 |
| 工作溫度： | -40°C ~ 85°C |
| 封裝/外殼： | 44-LCC（J 形引線） |
| 包裝： | 管件 |
| 其它名稱： | 568-4254-5 935284108512 P89CV51RC2FA |
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P89CV51RB2_RC2_RD2_3
NXP B.V. 2009. All rights reserved.
Product data sheet
Rev. 03 — 25 August 2009
39 of 76
NXP Semiconductors
P89CV51RB2/RC2/RD2
80C51 with 1 kB RAM, SPI
SM2 has no effect in Mode 0, and in Mode 1 can be used to check the validity of the stop
bit, although it is preferable to use the Framing Error ag (FE). When the UART receives
data in Mode 1 and SM2 = 1, the receive interrupt will not be activated unless a valid stop
bit is received.
6.6.9 Automatic address recognition
Automatic address recognition is a feature which allows the UART to recognize certain
addresses in the serial bit stream by using hardware to make the comparisons. This
feature saves a great deal of software overhead by eliminating the need for the software to
examine every serial address which passes by the serial port. This feature is enabled for
the UART by setting the SM2 bit in SCON. In the 9-bit UART modes, Mode 2 and Mode 3,
the Receive Interrupt ag (RI) will be automatically set when the received byte contains
either the ‘given’ address or the ‘broadcast’ address. The 9-bit mode requires that the 9th
information bit is a 1 to indicate that the received information is an address and not data.
Using the automatic address recognition feature allows a master to selectively
communicate with one or more slaves by invoking the given slave address or addresses.
All of the slaves may be contacted by using the broadcast address. Two special function
registers are used to dene the slave’s address, SADDR, and the address mask, SADEN.
SADEN is used to dene which bits in the SADDR are to be used and which bits are don’t
care. The SADEN mask can be logically ANDed with the SADDR to create the given
address which the master will use for addressing each of the slaves. Use of the given
address allows multiple slaves to be recognized while excluding others.
This device uses the methods presented in Figure 15 to determine if a given or broadcast
address has been received or not.
Fig 15. Schemes used by the UART to detect ‘given’ and ‘broadcast’ addresses when
multiprocessor communications is enabled
002aaa527
rx_byte(7)
saddr(7)
saden(7)
rx_byte(0)
saddr(0)
.
given_address_match
logic used by UART to detect 'given address' in received data
saddr(7)
saden(7)
rx_byte(7)
saddr(0)
saden(0)
rx_byte(0)
broadcast_address_match
logic used by UART to detect 'given address' in received data
saden(0)
.
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| P89CV51RC2FBC | 功能描述:8位微控制器 -MCU 80C51 32K FL / 512 R RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時(shí)鐘頻率:50 MHz 程序存儲(chǔ)器大小:16 KB 數(shù)據(jù) 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(fēng)格:SMD/SMT |
| P89CV51RC2FBC,557 | 功能描述:8位微控制器 -MCU 80C51 32K FL / 512 R RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時(shí)鐘頻率:50 MHz 程序存儲(chǔ)器大小:16 KB 數(shù)據(jù) 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(fēng)格:SMD/SMT |
| P89CV51RD2 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:8-bit 80C51 5 V low power 64 kB flash microcontroller with 1 kB RAM, SPI, 6-clock CPU with 6/12-clock peripherals |
| P89CV51RD2FA | 制造商: 功能描述: 制造商:undefined 功能描述: |
| P89CV51RD2FA,512 | 功能描述:8位微控制器 -MCU 64K/1K FL 12 CLK ISP/IAP IND RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時(shí)鐘頻率:50 MHz 程序存儲(chǔ)器大小:16 KB 數(shù)據(jù) 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(fēng)格:SMD/SMT |
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