PIC18F26K20-E/SP Microchip Technology, PIC18F26K20-E/SP Datasheet - Page 30
![IC PIC MCU FLASH 32KX16 28-DIP](/photos/6/59/65908/150-28-dip_sml.jpg)
PIC18F26K20-E/SP
Manufacturer Part Number
PIC18F26K20-E/SP
Description
IC PIC MCU FLASH 32KX16 28-DIP
Manufacturer
Microchip Technology
Series
PIC® XLP™ 18Fr
Datasheets
1.PIC18F25K20T-ISS.pdf
(42 pages)
2.PIC18F25K20T-ISS.pdf
(456 pages)
3.PIC18F26K20-ISS.pdf
(6 pages)
4.PIC18F26K20-ISS.pdf
(10 pages)
5.PIC18F26K20-ISO.pdf
(430 pages)
Specifications of PIC18F26K20-E/SP
Program Memory Type
FLASH
Program Memory Size
64KB (32K x 16)
Package / Case
28-DIP (0.300", 7.62mm)
Core Processor
PIC
Core Size
8-Bit
Speed
48MHz
Connectivity
I²C, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, HLVD, POR, PWM, WDT
Number Of I /o
24
Eeprom Size
1K x 8
Ram Size
3.8K x 8
Voltage - Supply (vcc/vdd)
1.8 V ~ 3.6 V
Data Converters
A/D 11x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 125°C
Processor Series
PIC18F
Core
PIC
Data Bus Width
8 bit
Data Ram Size
3936 B
Interface Type
CCP, ECCP, EUSART, I2C, MSSP, SPI
Maximum Clock Frequency
64 MHz
Number Of Programmable I/os
25
Number Of Timers
4
Maximum Operating Temperature
+ 125 C
Mounting Style
Through Hole
3rd Party Development Tools
52715-96, 52716-328, 52717-734, 52712-325, EWPIC18
Development Tools By Supplier
PG164130, DV164035, DV244005, DV164005, PG164120, DV164136
Minimum Operating Temperature
- 40 C
On-chip Adc
10 bit, 11 Channel
Package
28SPDIP
Device Core
PIC
Family Name
PIC18
Maximum Speed
64 MHz
Operating Supply Voltage
2.5|3.3 V
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
For Use With
AC164112 - VOLTAGE LIMITER MPLAB ICD2 VPP
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
- PIC18F25K20T-ISS PDF datasheet
- PIC18F25K20T-ISS PDF datasheet #2
- PIC18F26K20-ISS PDF datasheet #3
- PIC18F26K20-ISS PDF datasheet #4
- PIC18F26K20-ISO PDF datasheet #5
- Current page: 30 of 430
- Download datasheet (7Mb)
PIC18F2XK20/4XK20
2.3
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<1:0>) bits of the OSCCON register. See
Section 2.9 “Clock Switching” for additional informa-
tion.
TABLE 2-1:
2.4.2
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 and the OSC2 is available
for general purpose I/O. Figure 2-2 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.
DS41303D-page 28
the clock source. Examples are: Clock modules
(EC mode), quartz crystal resonators or ceramic
resonators (LP, XT and HS modes) and Resistor-
Capacitor (RC mode) circuits.
within the Oscillator block. The Oscillator block
has two internal oscillators: the 16 MHz High-
Frequency Internal Oscillator (HFINTOSC) and
the 31 kHz Low-Frequency Internal Oscillator
(LFINTOSC).
LFINTOSC (31 kHz)
LFINTOSC (31 kHz)
Switch From
Sleep/POR
Sleep/POR
Sleep/POR
Sleep/POR
Clock Source Modes
EC MODE
OSCILLATOR DELAY EXAMPLES
®
MCU design is fully
HFINTOSC
HFINTOSC
LFINTOSC
LP, XT, HS
Switch To
EC, RC
EC, RC
HSPLL
Preliminary
250 kHz to 16 MHz
250 kHz to 16 MHz
32 MHz to 64 MHz
32 kHz to 40 MHz
DC – 64 MHz
DC – 64 MHz
Frequency
31 kHz
2.4
2.4.1
When 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. When switching between clock sources, a
delay is required to allow the new clock to stabilize.
These oscillator delays are shown in Table 2-1.
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 2.10
“Two-Speed Clock Start-up Mode”).
FIGURE 2-2:
Note 1:
Clock from
Ext. System
External Clock Modes
OSCILLATOR START-UP TIMER (OST)
Alternate pin functions are listed in
Section 1.0 “Device Overview”.
Oscillator Warm-Up Delay (T
2 instruction cycles
1 cycle of each
1024 Clock Cycles (OST)
1024 Clock Cycles (OST) + 2 ms
1 μs (approx.)
I/O
EXTERNAL CLOCK (EC)
MODE OPERATION
© 2008 Microchip Technology Inc.
Oscillator Delay
OSC1/CLKIN
OSC2/CLKOUT
PIC
®
MCU
(1)
WARM
)
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