参数资料
型号: PIC12C672T-10I/MF
厂商: Microchip Technology
文件页数: 88/129页
文件大小: 0K
描述: IC MCU OTP 2KX14 W/AD 8-DFN
标准包装: 3,300
系列: PIC® 12C
核心处理器: PIC
芯体尺寸: 8-位
速度: 10MHz
外围设备: POR,WDT
输入/输出数: 5
程序存储器容量: 3.5KB(2K x 14)
程序存储器类型: OTP
RAM 容量: 128 x 8
电压 - 电源 (Vcc/Vdd): 3 V ~ 5.5 V
数据转换器: A/D 4x8b
振荡器型: 内部
工作温度: -40°C ~ 85°C
封装/外壳: 8-VDFN 裸露焊盘
包装: 带卷 (TR)
配用: AC164324-ND - MODULE SKT FOR MPLAB 8DFN/16QFN
XLT08DFN2-ND - SOCKET TRANSITION ICE 14DIP/8DFN
XLT08DFN-ND - SOCKET TRANSITION ICE 8DFN
AC164032-ND - ADAPTER PICSTART PLUS 8DFN/DIP
AC124001-ND - MODULE SKT PROMATEII 8DIP/SOIC
1999 Microchip Technology Inc.
DS30561B-page 61
PIC12C67X
FIGURE 9-10: EXTERNAL POWER-ON
RESET CIRCUIT (FOR SLOW
VDD POWER-UP)
Note 1: External Power-on Reset circuit is required only
if VDD power-up slope is too slow. The diode D
helps discharge the capacitor quickly when VDD
powers down.
2: R < 40 k
is recommended to make sure that
voltage drop across R does not violate the
device’s electrical specification.
3: R1 = 100
to 1 k will limit any current flowing
into MCLR from external capacitor C, in the
event of MCLR/VPP pin breakdown due to
Electrostatic Discharge (ESD) or Electrical
Overstress (EOS).
C
R1
R
D
VDD
MCLR
PIC12C67X
FIGURE 9-11: EXTERNAL BROWN-OUT
PROTECTION CIRCUIT 1
FIGURE 9-12: EXTERNAL BROWN-OUT
PROTECTION CIRCUIT 2
Note 1:
This circuit will activate reset when VDD goes
below (Vz + 0.7V), where Vz = Zener voltage.
2: Resistors should be adjusted for the character-
istics of the transistor.
VDD
33k
10k
4.3k
VDD
MCLR
PIC12C67X
Note 1:
This brown-out circuit is less expensive,
albeit less accurate. Transistor Q1 turns off
when VDD is below a certain level such that:
2: Resistors should be adjusted for the charac-
teristics of the transistor.
VDD
R1
R1 + R2
= 0.7V
VDD
R2
4.3k
PIC12C67X
R1
Q1
VDD
MCLR
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