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| 型號(hào)： | MC908JL16CSPE |
| 廠商： | Freescale Semiconductor |
| 文件頁(yè)數(shù)： | 16/230頁(yè) |
| 文件大?。?/td> | 0K |
| 描述： | IC MCU 16K FLASH 8MHZ 32-SDIP |
| 標(biāo)準(zhǔn)包裝： | 17 |
| 系列： | HC08 |
| 核心處理器： | HC08 |
| 芯體尺寸： | 8-位 |
| 速度： | 8MHz |
| 連通性： | I²C，SCI |
| 外圍設(shè)備： | LED，LVD，POR，PWM |
| 輸入/輸出數(shù)： | 26 |
| 程序存儲(chǔ)器容量： | 16KB（16K x 8） |
| 程序存儲(chǔ)器類(lèi)型： | 閃存 |
| RAM 容量： | 512 x 8 |
| 電壓 - 電源 (Vcc/Vdd)： | 2.7 V ~ 5.5 V |
| 數(shù)據(jù)轉(zhuǎn)換器： | A/D 13x10b |
| 振蕩器型： | 內(nèi)部 |
| 工作溫度： | -40°C ~ 85°C |
| 封裝/外殼： | 32-SDIP（0.400"，10.16mm） |
| 包裝： | 管件 |
| 產(chǎn)品目錄頁(yè)面： | 724 (CN2011-ZH PDF) |
| 配用： | DEMO908JL16E-ND - BOARD DEMO FOR MC908JL16 |
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Multi-Master IIC Interface (MMIIC)
MC68HC908JL16 Data Sheet, Rev. 1.1
112
Freescale Semiconductor
8.4.3 Slave Address Transmission
The first byte of data transfer immediately after the START signal is the slave address transmitted by the
master. This is a seven-bit calling address followed by a R/W bit. The R/W bit tells the slave the desired
direction of data transfer.
1 = Read transfer, the slave transmits data to the master.
0 = Write transfer, the master transmits data to the slave.
Only the slave with a calling address that matches the one transmitted by the master will respond by
sending back an acknowledge bit. This is done by pulling the SDA low at the 9th clock (see Figure 8-2).
No two slaves in the system may have the same address. If the IIC is master and it transmits an address
that is equal to its own slave address an interrupt flag is set. The IIC cannot be master and slave at the
same time. However, if arbitration is lost during an address cycle the IIC will revert to slave mode and
operate correctly even if it is being addressed by another master.
8.4.4 Data Transfer
Once successful slave addressing is achieved, the data transfer can proceed byte-by-byte in a direction
specified by the R/W bit sent by the calling master.
All transfers that come after an address cycle are referred to as data transfers, even if they carry
sub-address information for the slave device
Each data byte is 8 bits long. Data may be changed only while SCL is low and must be held stable while
SCL is high as shown in Figure 8-2. There is one clock pulse on SCL for each data bit, the MSB being
transferred first. Each data byte is followed by a 9th (acknowledge) bit, which is signalled from the
receiving device. An acknowledge is signalled by pulling the SDA low at the ninth clock. In summary, one
complete data transfer needs nine clock pulses.
If the slave receiver does not acknowledge the master in the 9th bit time, the SDA line must be left high
by the slave. The master interprets the failed acknowledge as an unsuccessful data transfer.
If the master receiver does not acknowledge the slave transmitter after a data byte transmission, the slave
interprets this as an end of data transfer and releases the SDA line.
In either case, the data transfer is aborted and the master does one of two things:
Relinquishes the bus by generating a STOP signal.
Commences a new calling by generating a repeated START signal.
8.4.5 STOP Signal
The master can terminate the communication by generating a STOP signal to free the bus. However, the
master may generate a START signal followed by a calling command without generating a STOP signal
first. This is called repeated START. A STOP signal is defined as a low-to-high transition of SDA while
SCL at logical “1” (see Figure 8-2).
The master can generate a STOP even if the slave has generated an acknowledge at which point the
slave must release the bus.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MC908JL3 | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:MC908JL3 |
| MC908JL3CDWE | 制造商:Freescale Semiconductor 功能描述: |
| MC908JL3CPE | 功能描述:IC MCU 4K FLASH 28-PDIP RoHS:是 類(lèi)別:集成電路 (IC) >> 嵌入式 - 微控制器， 系列:HC08 標(biāo)準(zhǔn)包裝:1 系列:87C 核心處理器:MCS 51 芯體尺寸:8-位 速度:16MHz 連通性:SIO 外圍設(shè)備:- 輸入/輸出數(shù):32 程序存儲(chǔ)器容量:8KB（8K x 8） 程序存儲(chǔ)器類(lèi)型:OTP EEPROM 大小:- RAM 容量:256 x 8 電壓 - 電源 (Vcc/Vdd):4 V ~ 6 V 數(shù)據(jù)轉(zhuǎn)換器:- 振蕩器型:外部 工作溫度:0°C ~ 70°C 封裝/外殼:44-DIP 包裝:管件 其它名稱:864285 |
| MC908JL3ECDWE | 功能描述:8位微控制器 -MCU PB-FREE FINISHED GOODS 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 |
| MC908JL3ECDWER | 功能描述:8位微控制器 -MCU FINISHED GOODS 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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