参数资料
型号: PIC18LF96J65-I/PT
厂商: Microchip Technology
文件页数: 95/131页
文件大小: 0K
描述: IC PIC MCU FLASH 48KX16 100TQFP
标准包装: 90
系列: PIC® 18F
核心处理器: PIC
芯体尺寸: 8-位
速度: 41.667MHz
连通性: EBI/EMI,以太网,I²C,SPI,UART/USART
外围设备: 欠压检测/复位,POR,PWM,WDT
输入/输出数: 70
程序存储器容量: 96KB(48K x 16)
程序存储器类型: 闪存
RAM 容量: 3808 x 8
电压 - 电源 (Vcc/Vdd): 2 V ~ 3.6 V
数据转换器: A/D 16x10b
振荡器型: 内部
工作温度: -40°C ~ 85°C
封装/外壳: 100-TQFP
包装: 托盘
PIC18F97J60 FAMILY
DS39762F-page 66
2011 Microchip Technology Inc.
A CM Reset behaves similarly to a Master Clear Reset,
RESET
instruction, WDT time-out or Stack Event Reset.
As with all hard and power Reset events, the device
Configuration Words are reloaded from the Flash Con-
figuration Words in program memory as the device
restarts.
5.6
Power-up Timer (PWRT)
PIC18F97J60 family of devices incorporates an
on-chip Power-up Timer (PWRT) to help regulate the
Power-on Reset process. The PWRT is always
enabled. The main function is to ensure that the device
voltage is stable before code is executed.
The Power-up Timer (PWRT) of the PIC18F97J60 fam-
ily devices is an 11-bit counter which uses the INTRC
source as the clock input. This yields an approximate
time interval of 2048 x 32
s = 66 ms. While the PWRT
is counting, the device is held in Reset.
The power-up time delay depends on the INTRC clock
and will vary from chip-to-chip due to temperature and
process variation. See DC Parameter 33 for details.
5.6.1
TIME-OUT SEQUENCE
The PWRT time-out is invoked after the POR pulse has
cleared. The total time-out will vary based on the status
Figure 5-6 all depict time-out sequences on power-up.
Since the time-outs occur from the POR pulse, if MCLR
is kept low long enough, the PWRT will expire. Bringing
MCLR
high
will
begin
execution
immediately
(Figure 5-5). This is useful for testing purposes or to
synchronize more than one PIC18FXXJ6X device
operating in parallel.
FIGURE 5-3:
TIME-OUT SEQUENCE ON POWER-UP (MCLR TIED TO VDD, VDD RISE < TPWRT)
FIGURE 5-4:
TIME-OUT SEQUENCE ON POWER-UP (MCLR NOT TIED TO VDD): CASE 1
TPWRT
VDD
MCLR
INTERNAL POR
PWRT TIME-OUT
INTERNAL RESET
TPWRT
VDD
MCLR
INTERNAL POR
PWRT TIME-OUT
INTERNAL RESET
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