PIC18F25J11-I/ML Microchip Technology, PIC18F25J11-I/ML Datasheet - Page 201
![IC PIC MCU FLASH 32K 2V 28-QFN](/photos/6/81/68120/150-28-qfn_sml.jpg)
PIC18F25J11-I/ML
Manufacturer Part Number
PIC18F25J11-I/ML
Description
IC PIC MCU FLASH 32K 2V 28-QFN
Manufacturer
Microchip Technology
Series
PIC® XLP™ 18Fr
Datasheets
1.MA180023.pdf
(528 pages)
2.PIC18LF24J10-ISS.pdf
(32 pages)
3.PIC18F24J11-ISS.pdf
(14 pages)
Specifications of PIC18F25J11-I/ML
Core Size
8-Bit
Program Memory Size
32KB (16K x 16)
Core Processor
PIC
Speed
48MHz
Connectivity
I²C, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
16
Program Memory Type
FLASH
Ram Size
3.8K x 8
Voltage - Supply (vcc/vdd)
2.15 V ~ 3.6 V
Data Converters
A/D 10x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
28-VQFN Exposed Pad, 28-HVQFN, 28-SQFN, 28-DHVQFN
Controller Family/series
PIC18
No. Of I/o's
16
Ram Memory Size
3.6875KB
Cpu Speed
48MHz
No. Of Timers
5
Interface
EUSART, I2C, SPI
Processor Series
PIC18F
Core
PIC
Data Bus Width
8 bit
Data Ram Size
3776 B
Interface Type
EUSART, I2C, SPI
Maximum Clock Frequency
48 MHz
Number Of Timers
5
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
3rd Party Development Tools
52715-96, 52716-328, 52717-734, 52712-325, EWPIC18
Development Tools By Supplier
PG164130, DV164035, DV244005, DV164005, PG164120, DM183022, DM183032, DV164136, MA180023
Minimum Operating Temperature
- 40 C
On-chip Adc
10 bit, 10 Channel
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
For Use With
AC164322 - MODULE SOCKET MPLAB PM3 28/44QFN
Eeprom Size
-
Lead Free Status / Rohs Status
Details
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
PIC18F25J11-I/ML
Manufacturer:
MICROCHIP
Quantity:
4 000
- Current page: 201 of 528
- Download datasheet (8Mb)
12.5.1
The Timer1 oscillator is also available as a clock source
in power-managed modes. By setting the clock select
bits, SCS<1:0> (OSCCON<1:0>), to ‘01’, the device
switches to SEC_RUN mode; both the CPU and
peripherals are clocked from the Timer1 oscillator. If the
IDLEN bit (OSCCON<7>) is cleared and a SLEEP
instruction is executed, the device enters SEC_IDLE
mode. Additional details are available in Section 3.0
“Low-Power Modes”.
Whenever the Timer1 oscillator is providing the clock
source, the Timer1 system clock status flag, T1RUN
(TCLKCON<4>), is set. This can be used to determine
the controller’s current clocking mode. It can also
indicate the clock source currently being used by the
Fail-Safe Clock Monitor. If the Clock Monitor is enabled
and the Timer1 oscillator fails while providing the clock,
polling the T1RUN bit will indicate whether the clock is
being provided by the Timer1 oscillator or another
source.
12.5.2
The Timer1 oscillator circuit draws very little power
during operation. Due to the low-power nature of the
oscillator, it may also be sensitive to rapidly changing
signals in close proximity. This is especially true when
the oscillator is configured for extremely low power
mode (LPT1OSC = 0).
The oscillator circuit, displayed in Figure 12-2, should
be located as close as possible to the microcontroller.
There should be no circuits passing within the oscillator
circuit boundaries other than V
If a high-speed circuit must be located near the
oscillator (such as the ECCP1 pin in Output Compare
or PWM mode, or the primary oscillator using the
OSC2 pin), a grounded guard ring around the oscillator
circuit, as displayed in Figure 12-3, may be helpful
when used on a single-sided PCB or in addition to a
ground plane.
© 2009 Microchip Technology Inc.
USING TIMER1 AS A
CLOCK SOURCE
TIMER1 OSCILLATOR LAYOUT
CONSIDERATIONS
SS
or V
DD
.
PIC18F46J11 FAMILY
FIGURE 12-3:
In the low drive level mode, LPT1OSC = 0, it is critical
that RC2 I/O pin signals be kept away from the oscillator
circuit. Configuring RC2 as a digital output, and toggling
it, can potentially disturb the oscillator circuit, even with
relatively good PCB layout. If possible, it is recom-
mended to either leave RC2 unused, or use it as an input
pin with a slew rate limited signal source. If RC2 must be
used as a digital output, it may be necessary to use the
higher drive level oscillator mode (LPT1OSC = 1) with
many PCB layouts. Even in the higher drive level mode,
careful layout procedures should still be followed when
designing the oscillator circuit.
In addition to dV/dt induced noise considerations, it is
also important to ensure that the circuit board is clean.
Even a very small amount of conductive soldering flux
residue can cause PCB leakage currents, which can
overwhelm the oscillator circuit.
12.6
The TMR1 register pair (TMR1H:TMR1L) increments
from 0000h to FFFFh and rolls over to 0000h. The
Timer1 interrupt, if enabled, is generated on overflow
which is latched in interrupt flag bit, TMR1IF
(PIR1<0>). This interrupt can be enabled or disabled
by setting or clearing the Timer1 Interrupt Enable bit,
TMR1IE (PIE1<0>).
Note: Not drawn to scale.
Timer1 Interrupt
OSCILLATOR CIRCUIT
WITH GROUNDED
GUARD RING
V
OSC1
RC0
V
OSC2
RC1
RC2
DD
SS
DS39932C-page 201
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