PIC17LC756AT-08I/PT Microchip Technology, PIC17LC756AT-08I/PT Datasheet - Page 20
PIC17LC756AT-08I/PT
Manufacturer Part Number
PIC17LC756AT-08I/PT
Description
IC MCU OTP 16KX16 A/D 64TQFP
Manufacturer
Microchip Technology
Series
PIC® 17Cr
Specifications of PIC17LC756AT-08I/PT
Core Processor
PIC
Core Size
8-Bit
Speed
8MHz
Connectivity
I²C, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
50
Program Memory Size
32KB (16K x 16)
Program Memory Type
OTP
Ram Size
902 x 8
Voltage - Supply (vcc/vdd)
3 V ~ 5.5 V
Data Converters
A/D 12x10b
Oscillator Type
External
Operating Temperature
-40°C ~ 85°C
Package / Case
64-TFQFP
Processor Series
PIC17LC
Core
PIC
Data Bus Width
8 bit
Data Ram Size
902 B
Interface Type
I2C, MSSP, RS- 232, SCI, SPI, USART
Maximum Clock Frequency
8 MHz
Number Of Programmable I/os
50
Number Of Timers
8
Operating Supply Voltage
3 V to 5.5 V
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
Minimum Operating Temperature
- 40 C
On-chip Adc
12 bit
Data Rom Size
902 B
Height
1 mm
Length
10 mm
Supply Voltage (max)
5.5 V
Supply Voltage (min)
3 V
Width
10 mm
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Lead Free Status / Rohs Status
Details
Other names
PIC17LC756AT08IPT
Available stocks
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Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
PIC17LC756AT-08I/PT
Manufacturer:
MICROCHIP
Quantity:
12 000
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Part Number:
PIC17LC756AT-08I/PT
Manufacturer:
Microchip Technology
Quantity:
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PIC17C7XX
4.1.6
For timing insensitive applications, the RC device
option offers additional cost savings. RC oscillator fre-
quency is a function of the supply voltage, the resistor
(R
temperature. In addition to this, oscillator frequency will
vary from unit to unit due to normal process parameter
variation. Furthermore, the difference in lead frame
capacitance between package types will also affect
oscillation frequency, especially for low C
The user also needs to take into account variation due
to tolerance of external R and C components used.
Figure 4-7 shows how the R/C combination is con-
nected to the PIC17CXXX. For R
2.2 k , the oscillator operation may become unstable,
or stop completely. For very high R
1 M ), the oscillator becomes sensitive to noise,
humidity and leakage. Thus, we recommend to keep
R
Although the oscillator will operate with no external
capacitor (C
above 20 pF for noise and stability reasons. With little
or no external capacitance, oscillation frequency can
vary dramatically due to changes in external capaci-
tances, such as PCB trace capacitance or package
lead frame capacitance.
See Section 21.0 for RC frequency variation from part
to part due to normal process variation. The variation is
larger for larger R (since leakage current variation will
affect RC frequency more for large R) and for smaller
C (since variation of input capacitance will affect RC
frequency more).
See Section 21.0 for variation of oscillator frequency
due to V
quency variation due to operating temperature for
given R, C, and V
The oscillator frequency, divided by 4, is available on
the OSC2/CLKOUT pin and can be used for test pur-
poses or to synchronize other logic (see Figure 4-8 for
waveform).
DS30289B-page 20
EXT
EXT
) and capacitor (C
between 3 k and 100 k .
DD
for given R
RC OSCILLATOR
EXT
= 0 pF), we recommend using values
DD
values.
EXT
EXT
/C
) values, and the operating
EXT
values, as well as fre-
EXT
EXT
values below
values (e.g.
EXT
values.
FIGURE 4-7:
4.1.6.1
As the device voltage increases, the RC will immedi-
ately start its oscillations once the pin voltage levels
meet the input threshold specifications (parameter
#D032 and parameter #D042 in the electrical specifica-
tion section). The time required for the RC to start oscil-
lating depends on many factors. These include:
• Resistor value used
• Capacitor value used
• Device V
• System temperature
C
V
R
EXT
SS
EXT
V
DD
DD
RC Start-up
rise time
F
OSC
/4
RC OSCILLATOR MODE
OSC2/CLKOUT
OSC1
2000 Microchip Technology Inc.
PIC17CXXX
Internal
Clock
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