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| 型号： | PIC12F519-E/MS |
| 厂商： | Microchip Technology |
| 文件页数： | 39/96页 |
| 文件大小： | 0K |
| 描述： | IC PIC MCU FLASH 1KX12 8MSOP |
| 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： | 8MHz |
| 外围设备： | POR，WDT |
| 输入/输出数： | 5 |
| 程序存储器容量： | 1.5KB（1K x 12） |
| 程序存储器类型： | 闪存 |
| RAM 容量： | 41 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 ~ 125°C |
| 封装/外壳： | 8-TSSOP，8-MSOP（0.118"，3.00mm 宽） |
| 包装： | 管件 |
| 产品目录页面： | 637 (CN2011-ZH PDF) |
| 配用： | AC162096-ND - HEADER MPLAB ICD2 PIC16F526 8/14 AC164325-ND - MODULE SKT FOR 8MSOP |
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PIC12F519
DS41319B-page 42
2008 Microchip Technology Inc.
TABLE 8-4:
RESET CONDITION FOR SPECIAL REGISTERS
8.3.1
MCLR ENABLE
This Configuration bit, when unprogrammed (left in the
‘1’ state), enables the external MCLR function. When
programmed, the MCLR function is tied to the internal
FIGURE 8-6:
MCLR SELECT
8.4
Power-on Reset (POR)
The PIC12F519 device incorporates an on-chip
Power-on Reset (POR) circuitry, which provides an
internal chip Reset for most power-up situations.
The on-chip POR circuit holds the chip in Reset until
VDD has reached a high enough level for proper
operation. To take advantage of the internal POR,
program the GP3/MCLR/VPP pin as MCLR and tie
through a resistor to VDD, or program the pin as GP3, in
which case, an internal weak pull-up resistor is
implemented using a transistor (refer to Table 11-4 for
the pull-up resistor ranges). This will eliminate external
RC components usually needed to create a Power-on
Reset. A maximum rise time for VDD is specified. See
for details.
When the devices start normal operation (exit the Reset
condition), device operating parameters (voltage,
frequency, temperature,...) must be met to ensure
operation. If these conditions are not met, the devices
must be held in Reset until the operating parameters
are met.
A simplified block diagram of the on-chip Power-on
Reset circuit is shown in Figure 8-7.
The Power-on Reset circuit and the Device Reset Timer
(see Section 8.5 “Device Reset Timer (DRT)”) circuit
are closely related. On power-up, the Reset latch is set
and the DRT is reset. The DRT timer begins counting
once it detects MCLR to be high. After the time-out
period, which is typically 18 ms or 1 ms, it will reset the
Reset latch and thus end the on-chip Reset signal.
A power-up example where MCLR is held low is shown
bringing MCLR high. The chip will actually come out of
Reset TDRT after MCLR goes high.
In Figure 8-9, the on-chip Power-on Reset feature is
being used (MCLR and VDD are tied together or the pin
is programmed to be GP3). The VDD is stable before
the Start-up timer times out and there is no problem in
getting a proper Reset. However, Figure 8-10 depicts a
problem situation where VDD rises too slowly. The time
between when the DRT senses that MCLR is high and
when MCLR and VDD actually reach their full value, is
too long. In this situation, when the start-up timer times
out, VDD has not reached the VDD (min) value and the
chip may not function correctly. For such situations, we
recommend that external RC circuits be used to
achieve longer POR delay times (Figure 8-9).
For additional information, refer to Application Note
AN522, “Power-Up Considerations” (DS00522)
STATUS Addr: 03h
Power-on Reset
0-01 1xxx
MCLR Reset during normal operation
0-0u uuuu
MCLR Reset during Sleep
0-01 0uuu
WDT Reset during Sleep
0-00 0uuu
WDT Reset normal operation
0-00 uuuu
Wake-up from Sleep on pin change
1-01 0uuu
Legend: u
= unchanged, x = unknown
GP3/MCLR/VPP
MCLRE
Internal MCLR
GPPU
Note:
When the devices start normal operation
(exit the Reset condition), device operat-
ing parameters (voltage, frequency, tem-
perature, etc.) must be met to ensure
operation. If these conditions are not met,
the device must be held in Reset until the
operating conditions are met.
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相关代理商/技术参数 |
参数描述 |
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| PIC12F519-I/MC | 功能描述:8位微控制器 -MCU 15KB Flash Prgrm 64B 8MHz Intrnl Oscilatr 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 |
| PIC12F519-I/MS | 功能描述:8位微控制器 -MCU 15KB Flash Prgrm 64B 8MHz Intrnl Oscilatr 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 |
| PIC12F519-I/P | 功能描述:8位微控制器 -MCU 8MHz Intrnl Oscilatr 1.5KB 64B Flash Data 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 |
| PIC12F519-I/SN | 功能描述:8位微控制器 -MCU 1.5KB Flash Program 64B FData 8MHz Osc 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 |
| PIC12F519T-E/MC | 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:8-Pin, 8-Bit Flash Microcontroller |
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