參數資料
型號： PIC14000-04I/SO
廠商： Microchip Technology
文件頁數： 94/153頁
文件大小： 0K
描述： IC MCU OTP 4KX14 A/D 28SOIC
產品培訓模塊： Asynchronous Stimulus
8-bit PIC® Microcontroller Portfolio
標準包裝： 27
系列： PIC® 14
核心處理器： PIC
芯體尺寸： 8-位
速度： 4MHz
連通性： I²C
外圍設備： POR，溫度傳感器，WDT
輸入/輸出數： 20
程序存儲器容量： 7KB（4K x 14）
程序存儲器類型： OTP
RAM 容量： 192 x 8
電壓 - 電源 (Vcc/Vdd)： 2.7 V ~ 6 V
數據轉換器： 斜率 A/D
振蕩器型： 內部
工作溫度： -40°C ~ 85°C
封裝/外殼： 28-SOIC（0.295"，7.50mm 寬）
包裝： 管件
配用： ISPICR1-ND - ADAPTER IN-CIRCUIT PROGRAMMING
309-1073-ND - ADAPTER 28-SOIC TO 28-SOIC
309-1024-ND - ADAPTER 28-SOIC TO 28-DIP
309-1023-ND - ADAPTER 28-SOIC TO 28-DIP
1996 Microchip Technology Inc.
Preliminary
DS40122B-page 45
PIC14000
7.3
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
acknowledge bit (ACK). This is shown in Figure 7-6.
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 (Figure 7-1).
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. The slave then releases the
SDA line so the master can generate the STOP. The
master can also generate the STOP 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 can be
accomplished by setting SMHOG (MISC<7>) high.
Clearing MISC<7> will resume the data transfer.
Figure 7-7 shows a data transfer waveform.
Figure 7-8 and Figure 7-9 show master-transmitter and
master-receiver data transfer sequences.
FIGURE 7-6:
I2C SLAVE-RECEIVER
ACKNOWLEDGE
Data
Output by
Transmitter
Data
Output by
Receiver
SCL from
Master
S
Start
Condition
not acknowledge
acknowledge
12
89
Clock pulse for
acknowledgement
FIGURE 7-7:
SAMPLE I2C DATA TRANSFER
Address
R/W
ACK
Wait
State
Data
ACK
Stop
Condition
P
9
3 8
2
acknowledgement
signal from receiver
1
byte complete.
interrupt with receiver
2
1
9
7
8
acknowledgement
signal from receiver
MSB
SDA
SCL
Start
Condition
S
clock line held low while
interrupts are serviced
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參數描述
PIC14000-20/SO 功能描述:8位微控制器 -MCU 7KB 192 RAM 20 I/O RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數據總線寬度:8 bit 最大時鐘頻率:50 MHz 程序存儲器大小:16 KB 數據 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 安裝風格:SMD/SMT
PIC14000-20/SP 功能描述:8位微控制器 -MCU 7KB 192 RAM 20 I/O RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數據總線寬度:8 bit 最大時鐘頻率:50 MHz 程序存儲器大小:16 KB 數據 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 安裝風格:SMD/SMT
PIC14000-20/SS 功能描述:8位微控制器 -MCU 7KB 192 RAM 20 I/O RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數據總線寬度:8 bit 最大時鐘頻率:50 MHz 程序存儲器大小:16 KB 數據 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 安裝風格:SMD/SMT
PIC14000-20I/P 制造商:Microchip Technology Inc 功能描述:MCU 8BIT PIC14 RISC 7KB EPROM 5V - Bulk
PIC14000-20I/SO 功能描述:8位微控制器 -MCU 7KB 192 RAM 20 I/O RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數據總線寬度:8 bit 最大時鐘頻率:50 MHz 程序存儲器大小:16 KB 數據 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 安裝風格:SMD/SMT
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