參數(shù)資料
型號(hào)： P89V51RB2BA
廠商： NXP SEMICONDUCTORS
元件分類： 微控制器/微處理器
英文描述： 8-bit 80C51 5 V low power 16/32/64 kB Flash microcontroller with 1 kB RAM
中文描述： 8-BIT, FLASH, 40 MHz, MICROCONTROLLER, PQCC44
封裝： PLASTIC, MS-018, SOT-187-2, LCC-44
文件頁(yè)數(shù)： 41/77頁(yè)
文件大?。?/td> 350K
代理商： P89V51RB2BA
Philips Semiconductors
P89V51RB2/RC2/RD2
8-bit microcontrollers with 80C51 core
Product data
Rev. 03 — 02 December 2004
41 of 77
9397 750 14341
Koninklijke Philips Electronics N.V. 2004. All rights reserved.
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 16
to determine if a ‘Given’ or
‘Broadcast’ address has been received or not.
The following examples will help to show the versatility of this scheme.
In the above example SADDR is the same and the SADEN data is used to
differentiate between the two slaves. Slave 0 requires a ‘0’ in bit 0 and it ignores bit 1.
Slave 1 requires a ‘0’ in bit 1 and bit 0 is ignored. A unique address for Slave 0 would
be 1100 0010 since slave 1 requires a ‘0’ in bit 1. A unique address for slave 1 would
be 1100 0001 since a ‘1’ in bit 0 will exclude slave 0. Both slaves can be selected at
the same time by an address which has bit 0 = 0 (for slave 0) and bit 1 = 0 (for
slave 1). Thus, both could be addressed with 1100 0000.
In a more complex system the following could be used to select slaves 1 and 2 while
excluding slave 0:
Fig 16. 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)
saden(0)
.
.
.
given_address_match
logic used by P89LV51RD2 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 P89LV51RD2 UART to detect 'given address' in received data
Table 28:
Example 1
Slave 0
Slave 0/1 examples
Example 2
SADDR
SADEN
Given
= 1100 0000
= 1111 1101
= 1100 00X0
SADDR
SADEN
Given
= 1100 0000
= 1111 1110
= 1100 000X
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PDF描述
P89V51RB2BBC 8-bit 80C51 5 V low power 16/32/64 kB Flash microcontroller with 1 kB RAM
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
P89V51RB2BBC 功能描述:8位微控制器 -MCU 16K/512 FL 12 CLK ISP/IAP COMM 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
P89V51RB2BBC,557 功能描述:8位微控制器 -MCU 16K/512 FL 12 CLK 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
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(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
P89V51RB2FA529 制造商:NXP Semiconductors 功能描述:IC 8BIT MCU 80C51 40MHZ LCC-44
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