PIC16F1934-E/ML Microchip Technology, PIC16F1934-E/ML Datasheet - Page 111

IC PIC MCU FLASH 256KX7 44-QFN

PIC16F1934-E/ML

Manufacturer Part Number
PIC16F1934-E/ML
Description
IC PIC MCU FLASH 256KX7 44-QFN
Manufacturer
Microchip Technology
Series
PIC® XLP™ 16Fr

Specifications of PIC16F1934-E/ML

Program Memory Type
FLASH
Program Memory Size
7KB (4K x 14)
Package / Case
44-QFN
Core Processor
PIC
Core Size
8-Bit
Speed
32MHz
Connectivity
I²C, LIN, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, LCD, POR, PWM, WDT
Number Of I /o
36
Eeprom Size
256 x 8
Ram Size
256 x 8
Voltage - Supply (vcc/vdd)
1.8 V ~ 5.5 V
Data Converters
A/D 14x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 125°C
Processor Series
PIC16F
Core
PIC
Data Bus Width
8 bit
Data Ram Size
256 B
Interface Type
EUSART/MI2C/SPI
Maximum Clock Frequency
32 MHz
Number Of Programmable I/os
36
Number Of Timers
5
Maximum Operating Temperature
+ 125 C
Mounting Style
SMD/SMT
3rd Party Development Tools
52715-96, 52716-328, 52717-734
Development Tools By Supplier
PG164130, DV164035, DV244005, DV164005
Minimum Operating Temperature
- 40 C
On-chip Adc
14-ch x 10-bit
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Lead Free Status / RoHS Status
Lead free / RoHS Compliant, Lead free / RoHS Compliant

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
PIC16F1934-E/ML
Manufacturer:
Microchip Technology
Quantity:
135
8.3
Clock Source modes can be classified as external or
internal.
• External Clock modes rely on external circuitry for
• Internal clock sources are contained internally
The system clock can be selected between external or
internal clock sources via the System Clock Select
(SCS) bit of the OSCCON register. See Section 8.6
“Clock Switching” for additional information. When
switching between clock sources, a delay is required to
allow the new clock to stabilize. These oscillator delays
are shown in Table 8-1.
TABLE 8-1:
8.4.2
The External Clock (EC) mode allows an externally
generated logic level as the system clock source. When
operating in this mode, an external clock source is
connected to the OSC1 input. OSC2/CLKOUT is
available for general purpose I/O or CLKOUT.
Figure 8-2 shows the pin connections for EC mode.
The Oscillator Start-up Timer (OST) is disabled when
EC mode is selected. Therefore, there is no delay in
operation after a Power-on Reset (POR) or wake-up
from Sleep. Because the PIC
static, stopping the external clock input will have the
effect of halting the device while leaving all data intact.
Upon restarting the external clock, the device will
resume operation as if no time had elapsed.
© 2008 Microchip Technology Inc.
Switch From
Sleep/POR
Sleep/POR
LFINTOSC
Sleep/POR
Any clock source
Any clock source
Any clock source
PLL inactive
Note 1:
the clock source. Examples are: oscillator mod-
ules (EC mode), quartz crystal resonators or
ceramic resonators (LP, XT and HS modes) and
Resistor-Capacitor (RC) mode circuits.
within the oscillator module. The oscillator module
has two internal oscillators: the 16 MHz
High-Frequency Internal Oscillator (HFINTOSC),
500 kHZ (MFINTOSC) and the 31 kHz
Low-Frequency Internal Oscillator (LFINTOSC).
Clock Source Modes
PLL inactive.
EC MODE
OSCILLATOR SWITCHING DELAYS
Switch To
LFINTOSC
MFINTOSC
HFINTOSC
EC, RC
EC, RC
Timer1 Oscillator
LP, XT, HS
MFINTOSC
HFINTOSC
LFINTOSC
Timer1 Oscillator
PLL active
®
MCU design is fully
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
Preliminary
Frequency
31 kHz
31.25 kHz-500 kHz
31.25 kHz-16 MHz
DC – 32 MHz
DC – 32 MHz
32 kHz-20 MHz
31.25 kHz-500 kHz
31.25 kHz-16 MHz
31 kHz
32 kHz
16-32 MHz
8.4
8.4.1
If the oscillator module is configured for LP, XT or HS
modes, the Oscillator Start-up Timer (OST) counts
1024 oscillations from OSC1. This occurs following a
Power-on Reset (POR) and when the Power-up Timer
(PWRT) has expired (if configured), or a wake-up from
Sleep. During this time, the program counter does not
increment and program execution is suspended. The
OST ensures that the oscillator circuit, using a quartz
crystal resonator or ceramic resonator, has started and
is providing a stable system clock to the oscillator
module.
In order to minimize latency between external oscillator
start-up and code execution, the Two-Speed Clock
Start-up mode can be selected (see Section 8.6.3
“Timer1 Oscillator Ready (T1OSCR) Bit”).
FIGURE 8-2:
PIC16F193X/LF193X
Note 1:
Clock from
Ext. System
External Clock Modes
OSCILLATOR START-UP TIMER (OST)
F
I/O
Output depends upon CLKOUTEN bit of the
Configuration Word 1.
OSC
(1)
Oscillator Warm-up Delay (T
2 cycles
1 cycle of each
1024 Clock Cycles (OST)
2 μs (approx.)
1 cycle of each
1024 Clock Cycles (OST)
2 ms (approx.)
Oscillator Delay
/4 or
EXTERNAL CLOCK (EC)
MODE OPERATION
OSC1/CLKIN
OSC2/CLKOUT
PIC
DS41364A-page 109
®
MCU
(1)
WARM
)

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