PIC17C43-25I/PQ Microchip Technology, PIC17C43-25I/PQ Datasheet - Page 18
![IC MCU OTP 4KX16 PWM 44-MQFP](/photos/6/59/65984/150-44-pqfp_sml.jpg)
PIC17C43-25I/PQ
Manufacturer Part Number
PIC17C43-25I/PQ
Description
IC MCU OTP 4KX16 PWM 44-MQFP
Manufacturer
Microchip Technology
Series
PIC® 17Cr
Datasheets
1.PIC16F616T-ISL.pdf
(8 pages)
2.PIC17C42A-16P.pdf
(241 pages)
3.PIC17C43-16P.pdf
(4 pages)
Specifications of PIC17C43-25I/PQ
Core Processor
PIC
Core Size
8-Bit
Speed
25MHz
Connectivity
UART/USART
Peripherals
POR, PWM, WDT
Number Of I /o
33
Program Memory Size
8KB (4K x 16)
Program Memory Type
OTP
Ram Size
454 x 8
Voltage - Supply (vcc/vdd)
4.5 V ~ 6 V
Oscillator Type
External
Operating Temperature
-40°C ~ 85°C
Package / Case
44-MQFP, 44-PQFP
For Use With
AC164316 - MODULE SKT MPLAB PM3 44MQFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Data Converters
-
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
PIC17C43-25I/PQ
Manufacturer:
Microchip Technology
Quantity:
10 000
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PIC17C4X
FIGURE 4-5:
FIGURE 4-6:
FIGURE 4-7:
DS30412C-page 18
This figure shows in greater detail the timings involved
with the oscillator start-up timer. In this example the
low frequency crystal start-up time is larger than
power-up time (T
Tosc1 = time for the crystal oscillator to react to an
oscillation level detectable by the Oscillator Start-up
Timer (ost).
T
INTERNAL RESET
PWRT TIME_OUT
This circuit will activate reset when V
(Vz + 0.7V) where Vz = Zener voltage.
OST
OST TIME_OUT
= 1024T
33k
V
OSC2
DD
MCLR
V
OSC
DD
OSCILLATOR START-UP TIME
PWRT
USING ON-CHIP POR
BROWN-OUT PROTECTION
CIRCUIT 1
10k
.
T
OSC
).
V
1
DD
40 k
T
PWRT
V
MCLR
MCLR
PIC17CXX
V
DD
PIC17CXX
DD
T
DD
OST
goes below
FIGURE 4-8:
FIGURE 4-9:
Note 1: An external Power-on Reset circuit is
This brown-out circuit is less expensive, albeit less
accurate. Transistor Q1 turns off when V
certain level such that:
V
2: R < 40 k is recommended to ensure
3: R1 = 100 to 1 k will limit any current
DD
R1
R2
D
V
required only if V
slow. The diode D helps discharge the
capacitor quickly when V
down.
that the voltage drop across R does not
exceed 0.2V (max. leakage current spec.
on the MCLR/V
voltage drop will degrade V
MCLR/V
flowing into MCLR from external capaci-
tor C in the event of MCLR/V
breakdown due to Electrostatic Dis-
charge (ESD) or (Electrical Overstress)
EOS.
DD
V
V
DD
DD
R
PIC17C42 EXTERNAL
POWER-ON RESET CIRCUIT
(FOR SLOW V
POWER-UP)
BROWN-OUT PROTECTION
CIRCUIT 2
C
PP
•
pin.
R1 + R2
R1
1996 Microchip Technology Inc.
Q1
PP
R1
40 k
DD
pin is 5 A). A larger
power-up time is too
MCLR
MCLR
PIC17C42
V
PIC17CXX
DD
= 0.7V
DD
DD
IH
powers
DD
PP
level on the
is below a
pin
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