PIC16F74-I/PTG Microchip Technology, PIC16F74-I/PTG Datasheet - Page 2
![IC MCU FLASH 4KX14 44TQFP](/photos/6/82/68251/c04-076_pt_sml.jpg)
PIC16F74-I/PTG
Manufacturer Part Number
PIC16F74-I/PTG
Description
IC MCU FLASH 4KX14 44TQFP
Manufacturer
Microchip Technology
Series
PIC® 16Fr
Datasheets
1.PIC16F616T-ISL.pdf
(8 pages)
2.PIC16F688T-ISL.pdf
(688 pages)
3.PIC16F818-ISO.pdf
(6 pages)
4.PIC16F73-ISP.pdf
(174 pages)
5.PIC16F73-ISP.pdf
(14 pages)
6.PIC16F73-ISP.pdf
(12 pages)
Specifications of PIC16F74-I/PTG
Core Processor
PIC
Core Size
8-Bit
Speed
20MHz
Connectivity
I²C, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
33
Program Memory Size
7KB (4K x 14)
Program Memory Type
FLASH
Ram Size
192 x 8
Voltage - Supply (vcc/vdd)
4 V ~ 5.5 V
Data Converters
A/D 8x8b
Oscillator Type
External
Operating Temperature
-40°C ~ 85°C
Package / Case
44-TQFP, 44-VQFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
PIC16F73/74/76/77
3. Module: Oscillator (HS mode)
DS80099G-page 2
Note:
When resonators above 2 MHz are used, the HS
mode oscillator is required to ensure reliable oper-
ation. HS mode oscillator drive at frequencies from
2 MHz to 4 MHz is often excessive, resulting in the
amplitude of the oscillator waveform exceeding
V
experience distortion as ESD protection devices
begin to operate on the OSC1 and OSC2 pins.
This distortion appears as a non-sinusoidal wave-
form or clipping, and can generate substantial
harmonics that may create excessive noise in the
application.
Revision C silicon will correct this issue.
Work around
The gain of the oscillator should be reduced by
inserting a series resistance between the OSC2
pin and the resonator/capacitor as shown in the
data sheet (see Figure 1). The value of the series
resistance is dependant on V
quency, and temperature; however, 330 ohms has
been used as a good starting point for evaluation.
This change will not affect operation of future
revisions of silicon as long as HS mode is
selected.
DD
and V
This issue applies only to resonators
above 2 MHz in Revision B silicon. No
issues are known to exist with crystals at
any frequency using XT Oscillator mode.
SS
. In such cases, the waveform may
DD
, resonator fre-
FIGURE 1:
Date Codes that pertain to this issue:
PIC16F73/74
PIC16F76/77
C2
C1
XTAL
Rs
CRYSTAL/CERAMIC
RESONATOR OPERATION
(HS, XT OR LP OSC
CONFIGURATION)
OSC1
OSC2
2003 Microchip Technology Inc.
0219 and earlier
0303 and earlier
RF
SLEEP
PIC16F7X
To
Internal
Logic