- 您现在的位置：买卖IC网 > PDF目录3894 > PIC12F629-I/SN (Microchip Technology)IC MCU CMOS FLSH-BASE 8BIT 8SOIC PDF资料下载
参数资料
| 型号： | PIC12F629-I/SN |
| 厂商： | Microchip Technology |
| 文件页数： | 2/35页 |
| 文件大小： | 0K |
| 描述： | IC MCU CMOS FLSH-BASE 8BIT 8SOIC |
| 产品培训模块： | Asynchronous Stimulus 8-bit PIC® Microcontroller Portfolio |
| 标准包装： | 100 |
| 系列： | PIC® 12F |
| 核心处理器： | PIC |
| 芯体尺寸： | 8-位 |
| 速度： | 20MHz |
| 外围设备： | POR，WDT |
| 输入/输出数： | 5 |
| 程序存储器容量： | 1.75KB（1K x 14） |
| 程序存储器类型： | 闪存 |
| EEPROM 大小： | 128 x 8 |
| RAM 容量： | 64 x 8 |
| 电压 - 电源 (Vcc/Vdd)： | 2 V ~ 5.5 V |
| 振荡器型： | 内部 |
| 工作温度： | -40°C ~ 85°C |
| 封装/外壳： | 8-SOIC（0.154"，3.90mm 宽） |
| 包装： | 管件 |
| 产品目录页面： | 637 (CN2011-ZH PDF) |
| 其它名称： | PIC12F629-I/SNG PIC12F629-I/SNG-ND |
第1页当前第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页第30页第31页第32页第33页第34页第35页
AT89S53
0787E–MICRO–3/06
10
Capture Mode
In the capture mode, two options are selected by bit
EXEN2 in T2CON. If EXEN2 = 0, Timer 2 is a 16-bit timer
or counter which upon overflow sets bit TF2 in T2CON.
This bit can then be used to generate an interrupt. If
EXEN2 = 1, Timer 2 performs the same operation, but a l-
to-0 transition at external input T2EX also causes the
current value in TH2 and TL2 to be captured into RCAP2H
and RCAP2L, respectively. In addition, the transition at
T2EX causes bit EXF2 in T2CON to be set. The EXF2 bit,
like TF2, can generate an interrupt. The capture mode is
illustrated in Figure 1.
Figure 1. Timer 2 in Capture Mode
Auto-reload (Up or Down Counter)
Timer 2 can be programmed to count up or down when
configured in its 16-bit auto-reload mode. This feature is
invoked by the DCEN (Down Counter Enable) bit located in
the SFR T2MOD (see Table 9). Upon reset, the DCEN bit
is set to 0 so that timer 2 will default to count up. When
DCEN is set, Timer 2 can count up or down, depending on
the value of the T2EX pin.
Figure 2 shows Timer 2 automatically counting up when
DCEN = 0. In this mode, two options are selected by bit
EXEN2 in T2CON. If EXEN2 = 0, Timer 2 counts up to
0FFFFH and then sets the TF2 bit upon overflow. The over-
flow also causes the timer registers to be reloaded with the
16-bit value in RCAP2H and RCAP2L. The values in
RCAP2H and RCAP2L are preset by software. If EXEN2 =
1, a 16-bit reload can be triggered either by an overflow or
by a 1-to-0 transition at external input T2EX. This transition
also sets the EXF2 bit. Both the TF2 and EXF2 bits can
generate an interrupt if enabled.
Setting the DCEN bit enables Timer 2 to count up or down,
as shown in Figure 3. In this mode, the T2EX pin controls
the direction of the count. A logic 1 at T2EX makes Timer 2
count up. The timer will overflow at 0FFFFH and set the
TF2 bit. This overflow also causes the 16-bit value in
RCAP2H and RCAP2L to be reloaded into the timer regis-
ters, TH2 and TL2, respectively.
A logic 0 at T2EX makes Timer 2 count down. The timer
underflows when TH2 and TL2 equal the values stored in
RCAP2H and RCAP2L. The underflow sets the TF2 bit and
causes 0FFFFH to be reloaded into the timer registers.
The EXF2 bit toggles whenever Timer 2 overflows or
underflows and can be used as a 17th bit of resolution. In
this operating mode, EXF2 does not flag an interrupt.
OSC
EXF2
T2EX PIN
T2 PIN
TR2
EXEN2
C/T2 = 0
C/T2 = 1
CONTROL
CAPTURE
OVERFLOW
CONTROL
TRANSITION
DETECTOR
TIMER 2
INTERRUPT
÷12
RCAP2L
RCAP2H
TH2
TL2
TF2
相关PDF资料 |
PDF描述 |
|---|---|
| PIC17LC756AT-08/L | IC MCU OTP 16KX16 A/D 68PLCC |
| PIC16F688T-I/SL | IC MCU PIC FLASH 4KX14 14SOIC |
| PIC16F57-I/P | IC MCU FLASH 2KX12 28DIP |
| PIC17LC756AT-08I/L | IC MCU OTP 16KX16 A/D 68PLCC |
| PIC17LC752T-08/PT | IC MCU OTP 8KX16 A/D 64TQFP |
相关代理商/技术参数 |
参数描述 |
|---|---|
| PIC12F629T-E/MD | 制造商:Microchip Technology Inc 功能描述:8BIT PIC12 RISC 1.75KB FLASH 2 - Tape and Reel |
| PIC12F629T-E/MF | 功能描述:8位微控制器 -MCU 1.75KB 64 RAM 6 I/O Ext Temp DFN8 RoHS:否 制造商:Silicon Labs 核心:8051 处理器系列:C8051F39x 数据总线宽度:8 bit 最大时钟频率:50 MHz 程序存储器大小:16 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:1.8 V to 3.6 V 工作温度范围:- 40 C to + 105 C 封装 / 箱体:QFN-20 安装风格:SMD/SMT |
| PIC12F629T-E/P | 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:8-Pin, Flash-Based 8-Bit CMOS Microcontrollers |
| PIC12F629T-E/SN | 功能描述:8位微控制器 -MCU 1.75KB 64 RAM 6 I/O Ext Temp SOIC8 RoHS:否 制造商:Silicon Labs 核心:8051 处理器系列:C8051F39x 数据总线宽度:8 bit 最大时钟频率:50 MHz 程序存储器大小:16 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:1.8 V to 3.6 V 工作温度范围:- 40 C to + 105 C 封装 / 箱体:QFN-20 安装风格:SMD/SMT |
| PIC12F629T-I/MD | 功能描述:8位微控制器 -MCU 1.75KB 64 RAM 6I/O Ind Temp QFN RoHS:否 制造商:Silicon Labs 核心:8051 处理器系列:C8051F39x 数据总线宽度:8 bit 最大时钟频率:50 MHz 程序存储器大小:16 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:1.8 V to 3.6 V 工作温度范围:- 40 C to + 105 C 封装 / 箱体:QFN-20 安装风格:SMD/SMT |
发布紧急采购，3分钟左右您将得到回复。