PIC18F452-I/PT Microchip Technology Inc., PIC18F452-I/PT Datasheet - Page 106

• Manufacturer Part Number: PIC18F452-I/PT
• Description: 44 PIN, 32 KB FLASH, 1536 RAM, 34 I/O
• Manufacturer: Microchip Technology Inc.

Specifications of PIC18F452-I/PT

• A/d Inputs: 8-Channel, 10-Bit
• Comparators: 2
• Cpu Speed: 10 MIPS
• Eeprom Memory: 256 Bytes
• Input Output: 36
• Interface: I2C/SPI/USART
• Memory Type: Flash
• Number Of Bits: 8
• Package Type: 44-pin TQFP
• Programmable Memory: 32K Bytes
• Ram Size: 1.5K Bytes
• Speed: 40 MHz
• Timers: 1-8-bit, 3-16-bit
• Voltage, Range: 2-5.5 V
• Lead Free Status / Rohs Status: RoHS Compliant part Electrostatic Device

PIC18FXX2
FIGURE 10-1:
FIGURE 10-2:
DS39564C-page 104
T0CKI pin
Note:
Note: Upon RESET, Timer0 is enabled in 8-bit mode with clock input from T0CKI max. prescale.
RA4/T0CKI pin
Upon RESET, Timer0 is enabled in 8-bit mode with clock input from T0CKI max. prescale.
T0SE
F
OSC
T0SE
/4
F
OSC
TIMER0 BLOCK DIAGRAM IN 8-BIT MODE
TIMER0 BLOCK DIAGRAM IN 16-BIT MODE
T0CS
/4
0
1
T0PS2, T0PS1, T0PS0
Programmable
T0CS
Prescaler
0
1
3
T0PS2, T0PS1, T0PS0
Programmable
PSA
1
Prescaler
0
3
(2 T
Sync with
Internal
Clocks
CY
delay)
PSA
1
0
(2 T
Sync with
Internal
Clocks
CY
TMR0L
delay)
8
High Byte
© 2006 Microchip Technology Inc.
TMR0H
TMR0
8
TMR0L
8
Data Bus
8
8
Read TMR0L
Data Bus<7:0>
Write TMR0L
Flag bit TMR0IF
Flag bit TMR0IF
Set Interrupt
on Overflow
Set Interrupt
on Overflow