PIC18F13K22-I/SO Microchip Technology, PIC18F13K22-I/SO Datasheet - Page 99

• Manufacturer Part Number: PIC18F13K22-I/SO
• Description: IC MCU 8BIT 8KB FLASH 20SOIC
• Manufacturer: Microchip Technology
• Series: PIC® XLP™ 18Fr

Specifications of PIC18F13K22-I/SO

• Program Memory Type: FLASH
• Program Memory Size: 8KB (4K x 16)
• Package / Case: 20-SOIC (7.5mm Width)
• Core Processor: PIC
• Core Size: 8-Bit
• Speed: 64MHz
• Connectivity: I²C, LIN, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 17
• Eeprom Size: 256 x 8
• Ram Size: 256 x 8
• Voltage - Supply (vcc/vdd): 1.8 V ~ 5.5 V
• Data Converters: A/D 12x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Processor Series: PIC18F
• Core: PIC
• Data Bus Width: 8 bit
• Data Ram Size: 256 B
• Interface Type: I2C, MSSP, SPI, USART
• Maximum Clock Frequency: 64 MHz
• Number Of Programmable I/os: 17
• Number Of Timers: 4
• Operating Supply Voltage: 1.8 V to 5.5 V
• Maximum Operating Temperature: + 125 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
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 10 bit, 12 Channel
• Package: 20SOIC W
• Device Core: PIC
• Family Name: PIC18
• Maximum Speed: 64 MHz
• A/d Bit Size: 10 bit
• A/d Channels Available: 12
• Height: 2.05 mm
• Length: 12.8 mm
• Supply Voltage (max): 5.5 V
• Supply Voltage (min): 1.8 V, 2.7 V
• Width: 7.5 mm
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant

FIGURE 9-2:
9.3
An 8-bit counter is available as a prescaler for the Timer0
module. The prescaler is not directly readable or writable;
its value is set by the PSA and T0PS<2:0> bits of the
T0CON
assignment and prescale ratio.
Clearing the PSA bit assigns the prescaler to the
Timer0 module. When the prescaler is assigned,
prescale values from 1:2 through 1:256 in integer
power-of-2 increments are selectable.
When assigned to the Timer0 module, all instructions
writing to the TMR0 register (e.g., CLRF TMR0, MOVWF
TMR0, BSF TMR0, etc.) clear the prescaler count.
TABLE 9-1:
 2010 Microchip Technology Inc.
INTCON
PORTA
TMR0H
TMR0L
TRISA
T0CON
Legend: Shaded cells are not used by Timer0.
Note:
Note: Upon Reset, Timer0 is enabled in 8-bit mode with clock input from T0CKI max. prescale.
T0CKI pin
Name
Prescaler
register
T0SE
T0CS
T0PS<2:0>
PSA
Writing to TMR0 when the prescaler is
assigned to Timer0 will clear the prescaler
count but will not change the prescaler
assignment.
Timer0 Register, High Byte
Timer0 Register, Low Byte
GIE/GIEH PEIE/GIEL TMR0IE
F
TMR0ON
OSC
Bit 7
RA7
REGISTERS ASSOCIATED WITH TIMER0
—
/4
which
TIMER0 BLOCK DIAGRAM (16-BIT MODE)
0
1
determine
T08BIT
Bit 6
RA6
—
Programmable
Prescaler
TRISA5
3
the
T0CS
Bit 5
RA5
prescaler
0
1
Preliminary
TRISA4
INT0IE
T0SE
Bit 4
RA4
(2 T
Sync with
PIC18F1XK22/LF1XK22
Internal
Clocks
CY
Delay)
RABIE
9.3.1
The prescaler assignment is fully under software
control and can be changed “on-the-fly” during program
execution.
9.4
The TMR0 interrupt is generated when the TMR0 reg-
ister overflows from FFh to 00h in 8-bit mode, or from
FFFFh to 0000h in 16-bit mode. This overflow sets the
TMR0IF flag bit. The interrupt can be masked by clear-
ing the TMR0IE bit of the INTCON register. Before
re-enabling the interrupt, the TMR0IF bit must be
cleared by software in the Interrupt Service Routine.
Since Timer0 is shut down in Sleep mode, the TMR0
interrupt cannot awaken the processor from Sleep.
Bit 3
PSA
RA3
—
Timer0 Interrupt
TMR0IF
TRISA2
T0PS2
SWITCHING PRESCALER
ASSIGNMENT
Bit 2
RA2
TMR0L
8
8
TRISA1
INT0IF
T0PS1
Bit 1
RA1
High Byte
TMR0H
TMR0
8
8
8
TRISA0
T0PS0
RABIF
Bit 0
RA0
DS41365D-page 99
Set
TMR0IF
on Overflow
Read TMR0L
Write TMR0L
Internal Data Bus
on page
Values
Reset
257
260
258
258
260
258