PIC18F6621-I/PT Microchip Technology Inc., PIC18F6621-I/PT Datasheet - Page 134

• Manufacturer Part Number: PIC18F6621-I/PT
• Description: 64 PIN, 64 KB FLASH, 3840 RAM, 52 I/O
• Manufacturer: Microchip Technology Inc.

Specifications of PIC18F6621-I/PT

• A/d Inputs: 12-Channel, 10-Bit
• Comparators: 2
• Cpu Speed: 10 MIPS
• Eeprom Memory: 1024 Bytes
• Input Output: 54
• Interface: I2C/SPI/UART/USART
• Memory Type: Flash
• Number Of Bits: 8
• Package Type: 64-pin TQFP
• Programmable Memory: 64K Bytes
• Ram Size: 3.8K Bytes
• Speed: 40 MHz
• Timers: 2-8-bit, 3-16-bit
• Voltage, Range: 2-5.5 V
• Lead Free Status / Rohs Status: RoHS Compliant part Electrostatic Device

PIC18F6525/6621/8525/8621
FIGURE 11-1:
FIGURE 11-2:
DS39612B-page 132
Note:
T0CKI pin
Note:
T0CKI pin
T0SE
Upon Reset, Timer0 is enabled in 8-bit mode with clock input from T0CKI max. prescale.
F
Upon Reset, Timer0 is enabled in 8-bit mode with clock input from T0CKI max. prescale.
OSC
T0SE
/4
F
OSC
TIMER0 BLOCK DIAGRAM IN 8-BIT MODE
TIMER0 BLOCK DIAGRAM IN 16-BIT MODE
/4
T0CS
0
1
T0PS2, T0PS1, T0PS0
Programmable
T0CS
0
1
Prescaler
T0PS2, T0PS1, T0PS0
3
Programmable
Prescaler
PSA
1
0
3
(2 T
Sync with
Internal
Clocks
CY
Delay)
PSA
1
0
(2 T
Sync with
Internal
Clocks
CY
Delay)
TMR0L
8
High Byte
TMR0H
 2005 Microchip Technology Inc.
TMR0
8
Data Bus
TMR0
8
8
8
Flag bit TMR0IF
Data Bus<7:0>
Read TMR0L
Write TMR0L
Set Interrupt
on Overflow
Flag bit TMR0IF
Set Interrupt
on Overflow