PIC18F25K20-I/SO Microchip Technology, PIC18F25K20-I/SO Datasheet - Page 156
![IC PIC MCU FLASH 16KX16 28SOIC](/photos/6/59/65909/150-28-soic_sml.jpg)
PIC18F25K20-I/SO
Manufacturer Part Number
PIC18F25K20-I/SO
Description
IC PIC MCU FLASH 16KX16 28SOIC
Manufacturer
Microchip Technology
Series
PIC® XLP™ 18Fr
Datasheets
1.PIC18F25K20T-ISS.pdf
(42 pages)
2.PIC18F25K20T-ISS.pdf
(12 pages)
3.PIC18F25K20T-ISS.pdf
(14 pages)
4.PIC18F25K20T-ISS.pdf
(456 pages)
5.PIC18F26K20-ISO.pdf
(430 pages)
Specifications of PIC18F25K20-I/SO
Program Memory Type
FLASH
Program Memory Size
32KB (16K x 16)
Package / Case
28-SOIC (7.5mm Width)
Core Processor
PIC
Core Size
8-Bit
Speed
64MHz
Connectivity
I²C, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, HLVD, POR, PWM, WDT
Number Of I /o
24
Eeprom Size
256 x 8
Ram Size
1.5K x 8
Voltage - Supply (vcc/vdd)
1.8 V ~ 3.6 V
Data Converters
A/D 11x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Processor Series
PIC18F
Core
PIC
Data Bus Width
8 bit
Data Ram Size
1.5 KB
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
+ 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, DV164136
Minimum Operating Temperature
- 40 C
On-chip Adc
11-ch x 10-bit
Package
28SOIC W
Device Core
PIC
Family Name
PIC18
Maximum Speed
64 MHz
Operating Supply Voltage
2.5|3.3 V
A/d Bit Size
10 bit
A/d Channels Available
11
Height
2.31 mm
Length
17.87 mm
Supply Voltage (max)
3.6 V
Supply Voltage (min)
1.8 V
Width
7.49 mm
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
- PIC18F25K20T-ISS PDF datasheet #3
- PIC18F25K20T-ISS PDF datasheet #4
- PIC18F26K20-ISO PDF datasheet #5
- Current page: 156 of 430
- Download datasheet (7Mb)
PIC18F2XK20/4XK20
12.1
Timer0 can operate as either a timer or a counter; the
mode is selected with the T0CS bit of the T0CON
register. In Timer mode (T0CS = 0), the module
increments on every clock by default unless a different
prescaler
“Prescaler”). Timer0 incrementing is inhibited for two
instruction cycles following a TMR0 register write. The
user can work around this by adjusting the value written
to the TMR0 register to compensate for the anticipated
missing increments.
The Counter mode is selected by setting the T0CS bit
(= 1). In this mode, Timer0 increments either on every
rising or falling edge of pin RA4/T0CKI. The increment-
ing edge is determined by the Timer0 Source Edge
Select bit, T0SE of the T0CON register; clearing this bit
selects the rising edge. Restrictions on the external
clock input are discussed below.
An external clock source can be used to drive Timer0;
however, it must meet certain requirements (see
Table 26-11) to ensure that the external clock can be
synchronized with the internal phase clock (T
There is a delay between synchronization and the
onset of incrementing the timer/counter.
FIGURE 12-1:
DS41303D-page 154
Note:
T0CKI pin
Timer0 Operation
value
Upon Reset, Timer0 is enabled in 8-bit mode with clock input from T0CKI max. prescale.
T0SE
T0CS
T0PS<2:0>
PSA
is
F
OSC
TIMER0 BLOCK DIAGRAM (8-BIT MODE)
selected
/4
0
1
(see
Programmable
Prescaler
Section 12.3
3
OSC
Preliminary
).
0
1
(2 T
Sync with
Internal
Clocks
CY
12.2
TMR0H is not the actual high byte of Timer0 in 16-bit
mode; it is actually a buffered version of the real high
byte of Timer0 which is neither directly readable nor
writable (refer to Figure 12-2). TMR0H is updated with
the contents of the high byte of Timer0 during a read of
TMR0L. This provides the ability to read all 16 bits of
Timer0 without the need to verify that the read of the
high and low byte were valid. Invalid reads could
otherwise occur due to a rollover between successive
reads of the high and low byte.
Similarly, a write to the high byte of Timer0 must also
take place through the TMR0H Buffer register. Writing
to TMR0H does not directly affect Timer0. Instead, the
high byte of Timer0 is updated with the contents of
TMR0H when a write occurs to TMR0L. This allows all
16 bits of Timer0 to be updated at once.
Delay)
Timer0 Reads and Writes in
16-Bit Mode
8
TMR0L
8
© 2008 Microchip Technology Inc.
Set
TMR0IF
on Overflow
Internal Data Bus
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