參數(shù)資料
型號: AT89C51ID2-SLSUM
廠商: Atmel
文件頁數(shù): 146/157頁
文件大?。?/td> 0K
描述: IC 8051 MCU FLASH 64K 44PLCC
產(chǎn)品培訓模塊: MCU Product Line Introduction
標準包裝: 972
系列: 89C
核心處理器: 8051
芯體尺寸: 8-位
速度: 60MHz
連通性: I²C,SPI,UART/USART
外圍設備: POR,PWM,WDT
輸入/輸出數(shù): 34
程序存儲器容量: 64KB(64K x 8)
程序存儲器類型: 閃存
EEPROM 大小: 2K x 8
RAM 容量: 2K x 8
電壓 - 電源 (Vcc/Vdd): 2.7 V ~ 5.5 V
振蕩器型: 外部
工作溫度: -40°C ~ 85°C
封裝/外殼: 44-LCC(J 形引線)
包裝: 管件
配用: AT89OCD-01-ND - USB EMULATOR FOR AT8XC51 MCU
89
AT89C51ID2
4289C–8051–11/05
Table 67. Status in Master Receiver Mode
Status
Code
SSSTA
Status of the Two-
wire Bus and Two-
wire Hardware
Application software response
Next Action Taken by Two-wire Hardware
To/From SSDAT
To SSCON
SSSTA
SSSTO
SSI
SSAA
08h
A START condition has
been transmitted
Write SLA+R
X
0
X
SLA+R will be transmitted.
10h
A repeated START
condition has been
transmitted
Write SLA+R
Write SLA+W
X
0
X
SLA+R will be transmitted.
SLA+W will be transmitted.
Logic will switch to master transmitter mode.
38h
Arbitration lost in
SLA+R or NOT ACK
bit
No SSDAT action
0
1
0
X
Two-wire bus will be released and not addressed
slave mode will be entered.
A START condition will be transmitted when the bus
becomes free.
40h
SLA+R has been
transmitted; ACK has
been received
No SSDAT action
0
1
Data byte will be received and NOT ACK will be
returned.
Data byte will be received and ACK will be returned.
48h
SLA+R has been
transmitted; NOT ACK
has been received
No SSDAT action
1
0
1
0
1
0
X
Repeated START will be transmitted.
STOP condition will be transmitted and SSSTO flag
will be reset.
STOP condition followed by a START condition will
be transmitted and SSSTO flag will be reset.
50h
Data byte has been
received; ACK has
been returned
Read data byte
0
1
Data byte will be received and NOT ACK will be
returned.
Data byte will be received and ACK will be returned.
58h
Data byte has been
received; NOT ACK
has been returned
Read data byte
1
0
1
0
1
0
X
Repeated START will be transmitted.
STOP condition will be transmitted and SSSTO flag
will be reset.
STOP condition followed by a START condition will
be transmitted and SSSTO flag will be reset.
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