INTERNAL 4 MHZ
參數資料
型號： PIC16F627-04E/P
廠商： Microchip Technology
文件頁數： 168/170頁
文件大?。?/td> 0K
描述： IC MCU FLASH 1KX14 18-DIP
標準包裝： 25
系列： PIC® 16F
核心處理器： PIC
芯體尺寸： 8-位
速度： 4MHz
連通性： UART/USART
外圍設備： 欠壓檢測/復位，POR，PWM，WDT
輸入/輸出數： 16
程序存儲器容量： 1.75KB（1K x 14）
程序存儲器類型： 閃存
EEPROM 大小： 128 x 8
RAM 容量： 224 x 8
電壓 - 電源 (Vcc/Vdd)： 3 V ~ 5.5 V
振蕩器型： 內部
工作溫度： -40°C ~ 125°C
封裝/外殼： 18-DIP（0.300"，7.62mm）
包裝： 管件
配用： DVA16XP183-ND - ADAPTER ICE 18DIP/SOIC/SSOP
2003 Microchip Technology Inc.
Preliminary
DS40300C-page 95
PIC16F62X
14.2.6
INTERNAL 4 MHZ OSCILLATOR
The internal RC oscillator provides a fixed 4 MHz
(nominal) system clock at V
DD = 5V and 25
°C, see
“Electrical Specifications” section for information on
variation over voltage and temperature.
14.2.7
CLKOUT
The PIC16F62X can be configured to provide a clock
out signal by programming the configuration word. The
oscillator frequency, divided by 4 can be used for test
purposes or to synchronize other logic.
14.3
Special Feature: Dual Speed
Oscillator Modes
A software programmable Dual Speed Oscillator mode
is provided when the PIC16F62X is configured in either
ER or INTRC Oscillator modes. This feature allows
users to dynamically toggle the oscillator speed
between 4 MHz and 37 kHz. In ER mode, the 4 MHz
setting will vary depending on the value of the external
resistor. Also in ER mode, the 37 kHz operation is fixed
and does not vary with resistor value. Applications that
require low current power savings, but cannot tolerate
putting the part into SLEEP, may use this mode.
The OSCF bit in the PCON register is used to control
Dual Speed mode. See Section 3.2.2.6, Register 3-4.
14.4
RESET
The PIC16F62X differentiates between various kinds of
RESET:
a)
Power-on Reset (POR)
b)
MCLR Reset during normal operation
c)
MCLR Reset during SLEEP
d)
WDT Reset (normal operation)
e)
WDT Wake-up (SLEEP)
f)
Brown-out Detect (BOD)
Some registers are not affected in any RESET condi-
tion; their status is unknown on POR and unchanged in
any other RESET. Most other registers are reset to a
“RESET state” on Power-on Reset, MCLR Reset, WDT
Reset and MCLR Reset during SLEEP. They are not
affected by a WDT Wake-up, since this is viewed as the
resumption of normal operation. TO and PD bits are set
or cleared differently in different RESET situations as
indicated in Table 14-5. These bits are used in software
to determine the nature of the RESET. See Table 14-8
for a full description of RESET states of all registers.
A simplified block diagram of the on-chip RESET circuit
is shown in Figure 14-6.
The MCLR Reset path has a noise filter to detect and
ignore small pulses. See Table 17-6 for pulse width
specification.
FIGURE 14-6:
SIMPLIFIED BLOCK DIAGRAM OF ON-CHIP RESET CIRCUIT
S
R
Q
External
RESET
MCLR/
V
DD
OSC1/
WDT
Module
V
DD rise
detect
OST/PWRT
WDT
Timeout
Power-on Reset
OST
PWRT
Chip_Reset
10-bit Ripple-counter
Reset
Enable OST
Enable PWRT
SLEEP
See Table 14-4 for timeout situations.
Note
1:
This is a separate oscillator from the INTRC/ER oscillator.
Brown-out
Detect Reset
BODEN
CLKIN
Pin
V
PP Pin
10-bit Ripple-counter
Q
Schmitt Trigger Input
On-chip(1)
OSC
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相關代理商/技術參數
參數描述
PIC16F627-04I/P 功能描述:8位微控制器 -MCU 1.75KB 224 RAM 16I/O 4MHz IndTemp PDIP18 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
PIC16F627-04I/P 制造商:Microchip Technology Inc 功能描述:IC 8BIT FLASH MCU 16F627 DIP18
PIC16F627-04I/P 制造商:Microchip Technology Inc 功能描述:18 Pin 1.75 KB Std Flash 224 RAM 16 I
PIC16F627-04I/SO 功能描述:8位微控制器 -MCU 1.75KB 224 RAM 16I/O 4MHz IndTemp SOIC18 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
PIC16F627-04I/SO 制造商:Microchip Technology Inc 功能描述:8BIT FLASH MCU SMD 16F627 SOIC18
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