參數(shù)資料
型號: PIC12F1822-I/SN
廠商: Microchip Technology
文件頁數(shù): 36/109頁
文件大?。?/td> 0K
描述: IC MCU 8BIT FLASH 8SOIC
產品培訓模塊: 8-bit PIC® Microcontroller Portfolio
標準包裝: 100
系列: PIC® XLP™ 12F
核心處理器: PIC
芯體尺寸: 8-位
速度: 32MHz
連通性: I²C,LIN,SPI,UART/USART
外圍設備: 欠壓檢測/復位,POR,PWM,WDT
輸入/輸出數(shù): 6
程序存儲器容量: 3.5KB(2K x 14)
程序存儲器類型: 閃存
EEPROM 大?。?/td> 256 x 8
RAM 容量: 128 x 8
電壓 - 電源 (Vcc/Vdd): 1.8 V ~ 5.5 V
數(shù)據(jù)轉換器: A/D 4x10b
振蕩器型: 內部
工作溫度: -40°C ~ 85°C
封裝/外殼: 8-SOIC(0.154",3.90mm 寬)
包裝: 管件
223
7674F–AVR–09/09
ATmega164P/324P/644P
After a repeated START condition (state 0x10) the 2-wire Serial Interface can access the same
Slave again, or a new Slave without transmitting a STOP condition. Repeated START enables
the Master to switch between Slaves, Master Transmitter mode and Master Receiver mode with-
out losing control of the bus.
Table 19-2.
Status codes for Master Transmitter Mode
Status Code
(TWSR)
Prescaler Bits
are 0
Status of the 2-wire Serial Bus
and 2-wire Serial Interface Hard-
ware
Application Software Response
Next Action Taken by TWI Hardware
To/from TWDR
To TWCR
STA
STO
TWINT
TWEA
0x08
A START condition has been
transmitted
Load SLA+W
0
1
X
SLA+W will be transmitted;
ACK or NOT ACK will be received
0x10
A repeated START condition
has been transmitted
Load SLA+W or
Load SLA+R
0
1
X
SLA+W will be transmitted;
ACK or NOT ACK will be received
SLA+R will be transmitted;
Logic will switch to Master Receiver mode
0x18
SLA+W has been transmitted;
ACK has been received
Load data byte or
No TWDR action or
No TWDR action
0
1
0
1
0
1
X
Data byte will be transmitted and ACK or NOT ACK will
be received
Repeated START will be transmitted
STOP condition will be transmitted and
TWSTO Flag will be reset
STOP condition followed by a START condition will be
transmitted and TWSTO Flag will be reset
0x20
SLA+W has been transmitted;
NOT ACK has been received
Load data byte or
No TWDR action or
No TWDR action
0
1
0
1
0
1
X
Data byte will be transmitted and ACK or NOT ACK will
be received
Repeated START will be transmitted
STOP condition will be transmitted and
TWSTO Flag will be reset
STOP condition followed by a START condition will be
transmitted and TWSTO Flag will be reset
0x28
Data byte has been transmitted;
ACK has been received
Load data byte or
No TWDR action or
No TWDR action
0
1
0
1
0
1
X
Data byte will be transmitted and ACK or NOT ACK will
be received
Repeated START will be transmitted
STOP condition will be transmitted and
TWSTO Flag will be reset
STOP condition followed by a START condition will be
transmitted and TWSTO Flag will be reset
0x30
Data byte has been transmitted;
NOT ACK has been received
Load data byte or
No TWDR action or
No TWDR action
0
1
0
1
0
1
X
Data byte will be transmitted and ACK or NOT ACK will
be received
Repeated START will be transmitted
STOP condition will be transmitted and
TWSTO Flag will be reset
STOP condition followed by a START condition will be
transmitted and TWSTO Flag will be reset
0x38
Arbitration lost in SLA+W or data
bytes
No TWDR action or
No TWDR action
0
1
0
1
X
2-wire Serial Bus will be released and not addressed
Slave mode entered
A START condition will be transmitted when the bus be-
comes free
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