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參數(shù)資料
| 型號： | PIC16C77-10/L |
| 廠商： | Microchip Technology |
| 文件頁數(shù)： | 105/114頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC MCU OTP 8KX14 A/D PWM 44PLCC |
| 產(chǎn)品培訓(xùn)模塊： | Asynchronous Stimulus 8-bit PIC® Microcontroller Portfolio |
| 標準包裝： | 27 |
| 系列： | PIC® 16C |
| 核心處理器： | PIC |
| 芯體尺寸： | 8-位 |
| 速度： | 10MHz |
| 連通性： | I²C，SPI，UART/USART |
| 外圍設(shè)備： | 欠壓檢測/復(fù)位，POR，PWM，WDT |
| 輸入/輸出數(shù)： | 33 |
| 程序存儲器容量： | 14KB（8K x 14） |
| 程序存儲器類型： | OTP |
| RAM 容量： | 368 x 8 |
| 電壓 - 電源 (Vcc/Vdd)： | 4 V ~ 6 V |
| 數(shù)據(jù)轉(zhuǎn)換器： | A/D 8x8b |
| 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 |
| 配用： | AC164309-ND - MODULE SKT FOR PM3 44PLCC 444-1001-ND - DEMO BOARD FOR PICMICRO MCU 309-1040-ND - ADAPTER 44-PLCC ZIF TO 40-DIP 309-1039-ND - ADAPTER 44-PLCC TO 40-DIP |
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PIC16C7X
DS30390E-page 90
1997 Microchip Technology Inc.
11.4.2
ADDRESSING I2C DEVICES
There are two address formats. The simplest is the
7-bit address format with a R/W bit (Figure 11-15). The
more complex is the 10-bit address with a R/W bit
(Figure 11-16). For 10-bit address format, two bytes
must be transmitted with the rst ve bits specifying this
to be a 10-bit address.
FIGURE 11-15: 7-BIT ADDRESS FORMAT
FIGURE 11-16: I2C 10-BIT ADDRESS FORMAT
11.4.3
TRANSFER ACKNOWLEDGE
All data must be transmitted per byte, with no limit to the
number of bytes transmitted per data transfer. After
each byte, the slave-receiver generates an acknowl-
edge bit (ACK) (Figure 11-17). When a slave-receiver
doesn’t acknowledge the slave address or received
data, the master must abort the transfer. The slave
must leave SDA high so that the master can generate
the STOP condition (Figure 11-14).
S
R/W ACK
Sent by
Slave
slave address
S
R/W
Read/Write pulse
MSb
LSb
Start Condition
ACK
Acknowledge
S 1 1 1 1 0 A9 A8 R/W ACK A7 A6 A5 A4 A3 A2 A1 A0 ACK
sent by slave
= 0 for write
S
R/W
ACK
- Start Condition
- Read/Write Pulse
- Acknowledge
FIGURE 11-17: SLAVE-RECEIVER
ACKNOWLEDGE
If the master is receiving the data (master-receiver), it
generates an acknowledge signal for each received
byte of data, except for the last byte. To signal the end
of data to the slave-transmitter, the master does not
generate an acknowledge (not acknowledge). The
slave then releases the SDA line so the master can
generate the STOP condition. The master can also
generate the STOP condition during the acknowledge
pulse for valid termination of data transfer.
If the slave needs to delay the transmission of the next
byte, holding the SCL line low will force the master into
a wait state. Data transfer continues when the slave
releases the SCL line. This allows the slave to move the
received data or fetch the data it needs to transfer
before allowing the clock to start. This wait state tech-
nique can also be implemented at the bit level,
Figure 11-18. The slave will inherently stretch the clock,
when it is a transmitter, but will not when it is a receiver.
The slave will have to clear the SSPCON<4> bit to
enable clock stretching when it is a receiver.
S
Data
Output by
Transmitter
Data
Output by
Receiver
SCL from
Master
Start
Condition
Clock Pulse for
Acknowledgment
not acknowledge
acknowledge
1
2
8
9
FIGURE 11-18: DATA TRANSFER WAIT STATE
12
7
8
9
1
2
3
89
P
SDA
SCL
S
Start
Condition
Address
R/W
ACK
Wait
State
Data
ACK
MSB
acknowledgment
signal from receiver
acknowledgment
signal from receiver
byte complete
interrupt with receiver
clock line held low while
interrupts are serviced
Stop
Condition
Applicable Devices
72 73 73A 74 74A 76 77
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|---|---|
| PIC16C771-E/P | 功能描述:8位微控制器 -MCU 7KB 256 RAM 16 I/O 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 最大時鐘頻率:50 MHz 程序存儲器大小: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 |
| PIC16C771-E/SO | 功能描述:8位微控制器 -MCU 7KB 256 RAM 16 I/O 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 最大時鐘頻率:50 MHz 程序存儲器大小: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 |
| PIC16C771-E/SS | 功能描述:8位微控制器 -MCU 7KB 256 RAM 16 I/O 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 最大時鐘頻率:50 MHz 程序存儲器大小: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 |
| PIC16C771-I/P | 功能描述:8位微控制器 -MCU 7KB 256 RAM 16 I/O 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 最大時鐘頻率:50 MHz 程序存儲器大小: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 |
| PIC16C771-I/P | 制造商:Microchip Technology Inc 功能描述:IC 8BIT CMOS MCU 16C771 DIP20 |
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