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參數(shù)資料
| 型號： | SST89V58RD2-33-C-NJE |
| 廠商： | Microchip Technology |
| 文件頁數(shù)： | 44/92頁 |
| 文件大?。?/td> | 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 |
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2011 Silicon Storage Technology, Inc.
DS25087A
10/11
49
FlashFlex MCU
SST89V54RD2/RD / SST89V58RD2/RD
Not Recommended for New Designs
A Microchip Technology Company
Using the Given Address to Select Slaves
Any bits masked off by a 0 from SADEN become a “don’t care” bit for the given address. Any bit
masked off by a 1, becomes ANDED with SADDR. The “don’t cares” provide flexibility in the user-
defined addresses to address more slaves when using the given address.
Shown in the example above, Slave 1 has been given an address of 1111 0001 (SADDR). The SADEN
byte has been used to mask off bits to a given address to allow more combinations of selecting Slave 1
and Slave 2. In this case for the given addresses, the last bit (LSB) of Slave 1 is a “don’t care” and the
last bit of Slave 2 is a 1. To communicate with Slave 1 and Slave 2, the master would need to send an
address with the last bit equal to 1 (e.g. 1111 0001) since Slave 1’s last bit is a don’t care and Slave 2’s
last bit has to be a 1. To communicate with Slave 1 alone, the master would send an address with the
last bit equal to 0 (e.g. 1111 0000), since Slave 2’s last bit is a 1. See the table below for other possible
combinations.
If the user added a third slave such as the example below:
The user could use the possible addresses above to select slave 3 only. Another combination could be
to select slave 2 and 3 only as shown below.
More than one slave may have the same SADDR address as well, and a given address could be used
to modify the address so that it is unique.
Select Slave 1 Only
Slave 1
Given Address
Possible Addresses
1111 0X0X
1111 0000
1111 0100
Select Slave 2 Only
Slave 2
Given Address
Possible Addresses
1111 0XX1
1111 0111
1111 0011
Select Slaves 1 and 2
Slaves 1 and 2
Possible Addresses
1111 0001
1111 0101
Slave 3
SADDR =
1111
1001
SADEN =
1111
0101
GIVEN
=
1111 X0X1
Select Slaves 2 and 3 Only
Slaves 2 and 3
Possible Addresses
1111 0011
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| SST89V54RD2-33-C-NJE | IC MCU 8BIT 24KB FLASH 44PLCC |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SST89V58RD2-33-C-NJE1 | 制造商:SST 制造商全稱:Silicon Storage Technology, Inc 功能描述:FlashFlex51 MCU |
| SST89V58RD2-33-C-NJF2 | 制造商:SST 制造商全稱:Silicon Storage Technology, Inc 功能描述:FlashFlex51 MCU |
| SST89V58RD2-33-C-PI | 制造商:SST 制造商全稱:Silicon Storage Technology, Inc 功能描述:FlashFlex51 MCU |
| SST89V58RD2-33-C-PIE1 | 制造商:SST 制造商全稱:Silicon Storage Technology, Inc 功能描述:FlashFlex51 MCU |
| SST89V58RD2-33-C-PIF2 | 制造商:SST 制造商全稱:Silicon Storage Technology, Inc 功能描述:FlashFlex51 MCU |
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