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參數(shù)資料
| 型號(hào)： | PIC16LF1823-I/SL |
| 廠商： | Microchip Technology |
| 文件頁(yè)數(shù)： | 47/109頁(yè) |
| 文件大?。?/td> | 0K |
| 描述： | IC MCU 8BIT FLASH 14SOIC |
| 產(chǎn)品培訓(xùn)模塊： | 8-bit PIC® Microcontroller Portfolio |
| 標(biāo)準(zhǔn)包裝： | 57 |
| 系列： | PIC® XLP™ 16F |
| 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(shè)備： | 欠壓檢測(cè)/復(fù)位，POR，PWM，WDT |
| 輸入/輸出數(shù)： | 12 |
| 程序存儲(chǔ)器容量： | 3.5KB（2K x 14） |
| 程序存儲(chǔ)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 ~ 3.6 V |
| 數(shù)據(jù)轉(zhuǎn)換器： | A/D 8x10b |
| 振蕩器型： | 內(nèi)部 |
| 工作溫度： | -40°C ~ 85°C |
| 封裝/外殼： | 14-SOIC（0.154"，3.90mm 寬） |
| 包裝： | 管件 |
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233
7674F–AVR–09/09
ATmega164P/324P/644P
Figure 19-18. Formats and States in the Slave Transmitter Mode
19.7.5
Miscellaneous States
There are two status codes that do not correspond to a defined TWI state, see Table 19-6.
Status 0xF8 indicates that no relevant information is available because the TWINT Flag is not
set. This occurs between other states, and when the TWI is not involved in a serial transfer.
Status 0x00 indicates that a bus error has occurred during a 2-wire Serial Bus transfer. A bus
error occurs when a START or STOP condition occurs at an illegal position in the format frame.
Examples of such illegal positions are during the serial transfer of an address byte, a data byte,
or an acknowledge bit. When a bus error occurs, TWINT is set. To recover from a bus error, the
TWSTO Flag must set and TWINT must be cleared by writing a logic one to it. This causes the
TWI to enter the not addressed Slave mode and to clear the TWSTO Flag (no other bits in
TWCR are affected). The SDA and SCL lines are released, and no STOP condition is
transmitted.
19.7.6
Combining Several TWI Modes
In some cases, several TWI modes must be combined in order to complete the desired action.
Consider for example reading data from a serial EEPROM. Typically, such a transfer involves
the following steps:
1.
The transfer must be initiated.
2.
The EEPROM must be instructed what location should be read.
3.
The reading must be performed.
4.
The transfer must be finished.
S
SLA
R
A
DATA
A
$A8
$B8
A
$B0
Reception of the own
slave address and one or
more data bytes
Last data byte transmitted.
Switched to not addressed
slave (TWEA = '0')
Arbitration lost as master
and addressed as slave
n
From master to slave
From slave to master
Any number of data bytes
and their associated acknowledge bits
This number (contained in TWSR) corresponds
to a defined state of the Two-Wire Serial Bus. The
prescaler bits are zero or masked to zero
P or S
DATA
$C0
DATA
A
$C8
P or S
All 1's
A
Table 19-6.
Miscellaneous States
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
0xF8
No relevant state information
available; TWINT = “0”
No TWDR action
No TWCR action
Wait or proceed current transfer
0x00
Bus error due to an illegal
START or STOP condition
No TWDR action
0
1
X
Only the internal hardware is affected, no STOP condi-
tion is sent on the bus. In all cases, the bus is released
and TWSTO is cleared.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| PIC16LF1823T/CS | 制造商:Microchip Technology Inc 功能描述:IC MCU 8BIT 3.5KB FLASH |
| PIC16LF1823T-E/SL | 制造商:Microchip Technology Inc 功能描述:3.5 KB FLASH, 128 BYTES RAM, 3 - Tape and Reel |
| PIC16LF1823T-I/ML | 功能描述:8位微控制器 -MCU 3.5KB 128B RAM 32MHz Int. Osc 12 I/0 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 |
| PIC16LF1823T-I/SL | 功能描述:8位微控制器 -MCU 3.5KB 128B RAM 32MHz Int. Osc 12 I/0 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 |
| PIC16LF1823T-I/ST | 功能描述:8位微控制器 -MCU 3.5KB 128B RAM 32MHz Int. Osc 12 I/0 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 |
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