參數(shù)資料
型號： 12CE673
廠商： Microchip Technology Inc.
英文描述： HookUp/Lead Wire; Conductor Size AWG:18; No. Strands x Strand Size:65 x 36; Jacket Color:Black; Conductor Material:Copper; Jacket Material:Rubber; Leaded Process Compatible:Yes; Number of Conductors:1; Outer Diameter:0.144" RoHS Compliant: Yes
中文描述： 8引腳，8位CMOS微控制器與A / D轉(zhuǎn)換器和EEPROM數(shù)據(jù)存儲器
文件頁數(shù)： 53/116頁
文件大?。?/td> 671K
代理商： 12CE673
1998 Microchip Technology Inc.
Preliminary
DS40181B-page 53
PIC12CE67X
FIGURE 9-11: EXTERNAL POWER-ON
RESET CIRCUIT (FOR SLOW
V
DD
POWER-UP)
Note 1: External Power-on Reset circuit is required
only if V
DD
power-up slope is too slow. The
diode D helps discharge the capacitor
quickly when V
DD
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/V
PP
pin break-
down due to Electrostatic Discharge
(ESD) or Electrical Overstress (EOS).
C
R1
R
D
V
DD
MCLR
PIC12CE67X
FIGURE 9-12: EXTERNAL BROWN-OUT
PROTECTION CIRCUIT 1
FIGURE 9-13: EXTERNAL BROWN-OUT
PROTECTION CIRCUIT 2
Note 1: This circuit will activate reset when V
DD
goes below (Vz + 0.7V) where Vz = Zener
voltage.
2: Internal brown-out detection should be
disabled when using this circuit.
3: Resistors should be adjusted for the char-
acteristics of the transistor.
V
DD
33k
10k
4.3k
V
DD
MCLR
PIC12CE67X
Note 1: This brown-out circuit is less expensive,
albeit less accurate. Transistor Q1 turns
off when V
DD
is below a certain level
such that:
R1
R1 + R2
2: Internal brown-out detection should be
disabled, if available, when using this
circuit.
3: Resistors should be adjusted for the
characteristics of the transistor.
V
DD
= 0.7V
V
DD
R2
4.3k
PIC12CE67X
R1
Q1
V
DD
MCLR
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