參數(shù)資料
型號: SST89V58RD2-33-C-NJE
廠商: Microchip Technology
文件頁數(shù): 46/92頁
文件大小: 0K
描述: IC MCU 8BIT 40KB FLASH 44PLCC
標準包裝: 26
系列: FlashFlex®
核心處理器: 8051
芯體尺寸: 8-位
速度: 33MHz
連通性: EBI/EMI,SPI,UART/USART
外圍設(shè)備: 欠壓檢測/復位,POR,WDT
輸入/輸出數(shù): 36
程序存儲器容量: 32KB(32K x 8)
程序存儲器類型: 閃存
EEPROM 大小: 8K x 8
RAM 容量: 1K x 8
電壓 - 電源 (Vcc/Vdd): 2.7 V ~ 3.6 V
振蕩器型: 外部
工作溫度: 0°C ~ 70°C
封裝/外殼: 44-LCC(J 形引線)
包裝: 管件
2011 Silicon Storage Technology, Inc.
DS25087A
10/11
50
FlashFlex MCU
SST89V54RD2/RD / SST89V58RD2/RD
Not Recommended for New Designs
A Microchip Technology Company
Using the Broadcast Address to Select Slaves
Using the broadcast address, the master can communicate with all the slaves at once. It is formed by
performing a logical OR of SADDR and SADEN with ‘0’s in the result treated as “don’t cares”.
“Don’t cares” allow for a wider range in defining the broadcast address, but in most cases, the broad-
cast address will be FFH.
On reset, SADDR and SADEN are “0”. This produces an given address of all “don’t cares” as well as a
broadcast address of all “don’t cares.” This effectively disables Automatic Addressing mode and allows
the microcontroller to function as a standard 8051, which does not make use of this feature.
Slave 1
1111 0001
=
SADDR
+1111 1010 =
SADEN
1111 1X11
=
Broadcast
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